Ishiwata Cycle Tubing Catalog (Undated) — Frame Tube Sets, CFRP and Aluminum Tubing, Butted Tubes, Forks, Crowns, Ends, Seat Pillars and Fittings

Ishiwata’s catalog of tubing and frame parts in eight sections, mostly in English with Japanese tables. No year is printed. Two leaves were scanned twice, once seen through a translucent sheet, so a few pages repeat faintly.

— Page 1 (front cover) —
I.S
ISHIWATA SEISAKUSHO CO., LTD.
HEAD OFFICE: 210 KAWASAKI/JAPAN 9-8 DEKINO KAWASAKI-KU
TEL. 044-266-3934
TELEX. 3842-689
CABLE: KAWAISHI

ISHIWATA
CYCLE TUBING

[The Ishiwata Cycle Tubing catalog cover spread: on the right the front cover with the title “ISHIWATA CYCLE TUBING” over a drawing of a road bicycle on a navy and red background, on the left the dark navy back cover with the I.S ring logo and the Ishiwata Seisakusho address block. The cover is creased and the top edge near the spine is torn.]

— Page 2 —
SECTION
1
FRAME TUBE SETS
1. Full set of CrMo butted tubes | 6~ 9
Full set of CrMo oval butted tubes | 11~12
2. Set of combination CrMo/Hi-ten tubes | 8
3. Full set of Hi-tension butted tubes | 10
4. Full set of tandem tubings | 13
5. Set of Carbon fiber & Al-alloy tubes | 14~17
Carbon fiber & Al-alloy frame | 18
6. Mini cycle tubing | 19
4

1. BRAZING NOTE
1) We aprove of Brazing stick, All-States No.11 and U.T.C. No.16, both are low melthing Braze.(750°C 860°C)
2) Befor Brazing, please remove the impurities of jointed surface, tube and lug.
3) Please keep the heat at melting point of braze to get the perfect brazing. Caution! Over-heating.
4) The place where brazing are about 18°C or over temparature and less windy.
(1) ロウ材はオールステーツNO.11、又はユーテックU.T.C NO.16をご使用下さい。融点は750~860℃です。
(2) ロウ付前にはチューブおよびラッグの接合部の不純物を取り除いて下さい。
(3) ラッグ付フレームをロウ付される場合ロウ材が溶解し始めるときの温度を平均に保ちながら行うことが二つです、オーバーヒートしないよう注意して下さい。
(4) ロウ付する周囲の温度は18℃以上のところが良く、風通しの強いところはさけて下さい。

2. REMARKS 〔記号解説〕
記号 Mark | 品名 Description | 外径 Out Side Diameter | 肉厚 Thickness T/T’ | 長さ Length
10 C | Top Tube | 25.4 | 0.8/0.5 DB | 580
DB: Double Butted ダブル バチット[?]
SB: Single Butted シングル バチット[?]
PG: Plain Gauge プレーンゲージ
TG: Taper Gauge テーパーゲージ
C: CrMo クロモリ
H: Hi-Tension ハイテン
S: Law Carbon 普通鋼
Tube Item Number 種別番号

UTILITY 〔使用途〕
★★★ Best ★★ Better ★ Good
| 1. Time Trial 2. hard course | 1. Time Trial 2. Track and fine road flat course | 1. Pursuit 2. Road for light weight athlete | 1. Sprint 2. American Cross Country | 1. Sprint 2. Cycle figure 3. Road for heavy weight athlete
015(α) | | ★★ | ★★★ | |
017 | ★ | ★★★ | ★★★ | ★★ | ★★
019 | ★★★ | ★★★ | ★★ | ★★★ |
022 | ★★★ | ★★ | ★★ | ★★★ | ★★★
024 | ★★★ | ★★ | ★ | ★★★ | ★★★
025 | ★ | ★★ | ★ | ★★ | ★

COMPARISON 〔比較〕
(CAMPAGNOLO ROADENDS, NERVEX LUGS and FORK CROWN
without head and bottom fitting total : 630g)
illustration fram size : 540mm Square
| 015(α) | 017 | 019 | 022 | 024 | 025
frame and fork フレーム ホーク | 1350g | 1500g | 1670g | 1880g | 2000g | 2110g
brazing parts ロウ付部品 | 630g | 630g | 630g | 630g | 630g | 630g
Max total weight 総重量 | 1980g | 2130g | 2300g | 2510g | 2630g | 2740g
5

[The Section 1 divider “FRAME TUBE SETS” with its contents list on the left page, and on the right page the brazing notes in English and Japanese, a remarks key to the tube marks, a utility star chart and a weight comparison table for six tube sets. The right page is printed in English with Japanese captions and small katakana readings above some English terms.]

— Page 3 —
ISHIWATA FULL SET OF CrMo BUTTED TUBES
Callouts: 10 80 40 60 20 70 30 50
GUARANTEED BUILT WITH
017
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
017 RECORD BREAKER
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
17C | Top Tube | 25.4 | 0.7/0.4 DB | 580
20C | Seat Tube | 28.6 | 0.7/0.4 DB | 610
20C | Down Tube | 28.6 | 0.7/0.4 DB | 610
40C | Head Tube | 31.8 | 1.0 PG | 180
50C | Chain Stays | 22.2/12.0 | 0.8 PG | 410
60C | Seat Stays | 14.5/10.0 | 0.6 PG | 610
70C | Fork Blades | 29×16/12.0 | 1.0/0.8 TG | 400
80C | Column | 25.4 (Spline) | 2.2/1.6 SB | 200
Set of 11pcs
gr. 1,855
BLADES MARK
017
ISHIWATA CrMo
GUARANTEED BUILT WITH
019
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
019 GLORIES VICTORY
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
10C | Top Tube | 25.4 | 0.8/0.5 DB | 580
21C | Seat Tube | 28.6 | 0.8/0.5 SB | 610
30C | Down Tube | 28.6 | 0.8/0.5 DB | 610
40C | Head Tube | 31.8 | 1.0 PG | 180
50C | Chain Stays | 22.2/12.0 | 0.8 PG | 410
60C | Seat Stays | 14.5/10.0 | 0.6 PG | 610
71C | Fork Blades | 29×16/12.0 | 1.0 PG | 400
80C | Column | 25.4 | 2.2/1.6 SB | 200
Set of 11pcs
gr. 1,990
BLADES MARK
019
ISHIWATA CrMo
6

ISHIWATA FULL SET OF CrMo BUTTED TUBES
Callouts: 10 80 40 60 20 70 30 50
GUARANTEED BUILT WITH
015
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
015 (α) ALPHA
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
15C | Top Tube | 25.4 | 0.6/0.4 DB | 580
25C | Seat Tube | 28.6 | 0.7/0.4 SB | 610
35C | Down Tube | 28.6 | 0.6/0.35 DB | 610
41C | Head Tube | 31.8 | 0.7 PG | 180
51C | Chain Stays | 22.2/12.0 | 0.55PG | 410
60C | Seat Stays | 14.5/10.0 | 0.6 PG | 610
70C | Fork Blades | 29×16/12.0 | 1.0/0.8 TG | 400
80C | Column | 25.4 (Spline) | 2.2/1.6 SB | 200
Set of 11pcs
gr. 1,595
BLADES MARK
015
ISHIWATA CrMo
GUARANTEED BUILT WITH
022
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
022 SPEED GALLANT
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
11C | Top Tube | 25.4 | 0.9/0.6 DB | 580
22C | Seat Tube | 28.6 | 0.9/0.6 SB | 610
31C | Down Tube | 28.6 | 0.9/0.6 DB | 610
40C | Head Tube | 31.8 | 1.0 PC | 180
50C | Chain Stays | 22.2/12.0 | 0.8 PG | 410
61C | Seat Stays | 14.5/10.0 | 0.8 PG | 610
71C | Fork Blades | 29×16/12.0 | 1.0 PG | 400
80C | Column | 25.4 | 2.2/1.6 SB | 200
Set of 11pcs
gr. 2,185
BLADES MARK
022
ISHIWATA CrMo
7

[Four CrMo butted tube sets, each with a drawing of the separated frame tubes numbered 10 to 80 on a green panel: 017 RECORD BREAKER and 019 GLORIES VICTORY on the left page, 015 (α) ALPHA and 022 SPEED GALLANT on the right page, each with its tube table, a purple Ishiwata CrMo badge and a blades mark badge.]

— Page 4 —
Callouts: 10 80 40 60 20 70 30 50
ISHIWATA FULL SET OF CrMo BUTTED TUBES
GUARANTEED BUILT WITH
024
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
024 ULTRA STRONG
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
13C | Top Tube | 25.4 | 1.0/0.7 DB | 580
23C | Seat Tube | 28.6 | 1.0/0.7 SB | 610
32C | Down Tube | 28.6 | 1.0/0.7 DB | 610
40C | Head Tube | 31.8 | 1.0 PG | 180
50C | Chain Stays | 22.2/12.0 | 0.8 PG | 410
61C | Seat Stays | 14.5/10.0 | 0.8 PG | 610
73C | Fork Blades | 28×20/12.0 | 1.2 PG | 400
81C | Column | 25.4 | 2.2/1.6 SB | 200
Set of 11pcs
gr. 2,360
BLADES MARK
024
ISHIWATA CrMo
ISHIWATA SET OF COMBINATION CrMo/HI-TEN TUBES
GUARANTEED BUILT WITH
025
ISHIWATA CrMo
BUTTED & PLAIN TUBES HT FORKS & STAYS
025 SUPER CYCLIST
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
11C | Top Tube | 25.4 | 0.8 PG | 580
22C | Seat Tube | 28.6 | 0.8 PG | 610
31C | Down Tube | 28.6 | 0.9/0.6 DB | 610
40H | Head Tube | 31.8 | 1.2 PG | 180
50H | Chain Stays | 22.0/12.0 | 1.0 PG | 410
60H | Seat Stays | 14.5/10.0 | 1.0 PG | 610
70H | Fork Blades | 29×16/12.0 | 1.2 PG | 400
82H | Column | 25.4 | 2.7/1.6 SB | 200
Set of 11pcs
gr. 2,470
8

ISHIWATA FULL SET OF CrMo BUTTED TUBES FRANCH TYPE
Callouts: 10 80 40 60 20 70 30 50
GUARANTEED BUILT WITH
017
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
017F RECORD BREAKER
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
18C | Top Tube | 26.0 | 0.7/0.4 DB | 580
26C | Seat Tube | 28.0 | 0.7/0.4 DB | 610
26C | Down Tube | 28.0 | 0.7/0.4 DB | 610
42C | Head Tube | 32.0 | 1.0 PG | 180
53C | Chain Stays | 22.0/12.0 | 0.8 PG | 410
60C | Seat Stays | 14.5/10.0 | 0.6 PG | 610
70C | Fork Blades | 29×16/12.0 | 1.0/0.8 TG | 400
82C | Column | 25.0 (Spline) | 2.2/1.5 SB | 200
Set of 11pcs
gr. 1,830
BLADES MARK
017
ISHIWATA CrMo
GUARANTEED BUILT WITH
022
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
022F SPEED GALLANT
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
19C | Top Tube | 26.0 | 0.9/0.6 DB | 580
27C | Seat Tube | 28.0 | 0.9/0.6 SB | 610
36C | Down Tube | 28.0 | 0.9/0.6 DB | 610
42C | Head Tube | 32.0 | 1.0 PG | 180
53C | Chain Stays | 22.0/12.0 | 0.8 PG | 410
61C | Seat Stays | 14.5/10.0 | 0.8 PG | 610
71C | Fork Blades | 29×16/12.0 | 1.0 PG | 400
82C | Column | 25.0 (Spline) | 2.2/1.5 SB | 200
Set of 11pcs
gr. 2,160
BLADES MARK
022
ISHIWATA CrMo
9

[Tube sets on a green drawing panel: on the left page 024 ULTRA STRONG (CrMo butted) and 025 SUPER CYCLIST (combination CrMo/Hi-ten), on the right page the FRANCH TYPE 017F RECORD BREAKER and 022F SPEED GALLANT, each with its tube table and badges. The 025 set has no blades mark badge.]

— Page 5 —
ISHIWATA FULL SET OF HI-TEN TUBES
Callouts: 10 80 40 60 20 70 30 50
0245 SET
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
11H | Top Tube | 25.4 | 1.2/0.85 SB | 580
20H | Seat Tube | 28.6 | 1.0 PG | 610
23H | Down Tube | 28.6 | 1.2/0.85 SB | 610
40H | Head Tube | 31.8 | 1.2 PG | 180
50H | Chain Stays | 22.2/12.0 | 1.0 PG | 410
60H | Seat Stays | 14.5/10.0 | 1.0 PG | 610
70H | Fork Blades | 29×16/12.0 | 1.2 PG | 400
82H | Column | 25.4 | 2.7/1.6 SB | 200
Set of 11pcs
0245
ISHIWATA HI-TENSION
BUTTED TUBES FORKS & STAYS
0265 SET
Mark | Description | Out Side Diameter | Thickness T/T’ | Length
10H | Top Tube | 25.4 | 1.2/0.85 DB | 580
20H | Seat Tube | 28.6 | 1.2/0.85 SB | 610
30H | Down Tube | 28.6 | 1.2/0.85 DB | 610
40H | Head Tube | 31.8 | 1.2 PG | 180
50H | Chain Stays | 22.2/12.0 | 1.0 PG | 410
60H | Seat Stays | 14.5/10.0 | 1.0 PG | 610
70H | Fork Blades | 29×16/12.0 | 1.2 PG | 400
82H | Column | 25.4 | 2.7/1.6 SB | 200
Set of 11pcs
0265
ISHIWATA HI-TENSION
BUTTED TUBES FORKS & STAYS
10

オーバル バテット チュービング コンポ
OVAL BUTTED TUBING COMP.
ALL CrMo TUBES 《DBO》
GUARANTEED BUILT WITH
020
ISHIWATA CrMo
DOUBLE BUTTED TUBES FORKS & STAYS
ゼロ ニ オウ
020
ISHIWATA CrMo
ISHIWATA analyzis the bicycle frame scientifically. We developed an unique tubing, on which an ideal stress-distribution are loaded, and less flexibility which increase the motive power. 020 are an unique products, oval butted tubing and taper gauge stays. See bellow fig.
イシワタはあらゆる面から挑戦し、こゝに鉄鋼の限界と自転車の応力分布を理想的に配合した軽量でタワミの少ないオーバルバテット+テーパーゲージをミックスした世界にも類のない製品を開発しました。チューブ群の中から自由にコンポーネント出来るセットにして発売することにしました。
TOP AND DOWN OVAL BUTTED TUBES
L
Butted A
Taper 50
Taper 50
Oval butted 80
W
W’
T4
T3
SECTION W-W’
T1
T2
OVAL BUTTED STEERING COLUMNS
L
Taper 25
Oval butted 50
X
X’
T3
SECTION X-X’
T1
T2
CHAIN STAYS OVAL TAPER GAUGE
L
Oval taper gauge 100
Y
Y’
T3
SECTION Y-Y’
T1
T2
11

[The 0245 SET and 0265 SET Hi-ten tube tables with a drawing of the separated frame tubes numbered 10 to 80 on the left page, and on the right page the OVAL BUTTED TUBING COMP. 020 heading with an English and Japanese paragraph and three green dimension drawings of top and down tubes, steering columns and chain stays with their cross sections.]

— Page 6 —
FORK BLADES OVAL TAPER GAUGE
Oval taper gauge 100
Z
Z’
T3
SECTION Z-Z’
T1
T2
SECTION
W-W’
X-X’
Y-Y’
Rib
RIB indicate thick GAUGE side
RIBは厚肉側を示します。RIBを上に使用して下さい。
SECTION Z-Z’
Callouts: W W’ W W’ X X’ Z Z’ Y Y’
OVAL BUTTED. TAPER TUBING GROUP
Discription | Out Side Diameter | Thickness T1/T2 x T3 x T4 | Length | Weight
Top Tube | 25.4 | 0.8/0.6×0.4×0.7 DBO | 580 | gr. 195
| 25.4 | 0.9/0.7×0.5×0.8 DBO | 580 | gr. 230
Seat Tube | 28.6 | 0.8×0.5—SB | 610 | gr. 250
| 28.6 | 0.9×0.6—SB | 610 | gr. 305
| 28.6 | 0.8×0.5×0.8 DB | 610 | gr. 280
| 28.6 | 0.9×0.6×0.9 DB | 610 | gr. 325
Down Tube | 28.6 | 0.8/0.6×0.45×0.7DBO | 610 | gr. 220
| 28.6 | 0.9/0.7×0.5×0.8 DBO | 610 | gr. 275
Head Tube | 31.8 | —1.0—PG | 180 | gr. 140
Chain Stays | 22.2 | 0.9/0.7×0.6—TGO | 410 | gr. 320
Seat Stays | 14.5 | —0.6—PG | 610 | gr. 230
| 14.5 | —0.8—PG | 610 | gr. 280
Fork Blades | 29×16/12.0 | 1.1/0.9×0.8—TGO | 400 | gr. 330
| 28×20/12.0 | 1.1/0.9×0.8—TGO | 400 | gr. 365
Column | 25.4 | 2.1/1.9×1.6—SBO | 200 | gr. 190
| 25.4 | 2.3/2.0×1.6—SBO | 200 | gr. 205
12

TANDEM TUBING SET
FULL SET OF CrMo TUBES
Callouts: 10 10 80 40 60 20 20 70 30 50 100 91 90
Mark | Description | Out Side Diameter | Thickness T/T’ | Length | Q’ty
10 | Top Tube | 28.6 | 1.0/0.7 DB | 610 | 2PCS
20 | Seat Tube | 28.6 | 1.0 PG | 610 | 2PCS
30 | Down Tube | 31.8 | 1.0 PG | 610 | 1PCS
40 | Head Tube | 34.0 | 2.0 PG | 200 | 1PCS
50 | Chain Stays | 24.0/12.0 | 1.0 PG | 400 | 2PCS
60 | Seat Stays | 16.0/10.0 | 0.8 PG | 610 | 2PCS
70 | Fork Blades | 28.0×20.0/14.0 | 1.5 PG | 400 | 2PCS
80 | Column | 25.4 | 2.7/1.6 SB | 240 | 1PCS
100 | Oval Bottom Tube | 49.0/32.0 | 1.25 PG | 610 | 1PCS
90 | Excentric B.B Front Shell Set | | | | 1SET
91 | B.B Rear Shell Set | | | | 1SET
| B.B Clamp Bolts and Brazing Parts | | | | 4PCS
On order
1) Down Tube 31.8×2.0x610 PG
Seat Tube 31.8×2.0x610 PG with Top End of Seat Post Squeezing 28.6×0.9×80
2) Centeral Stays 16.0×0.8~PG
3) Seat Tube Bending for Short Wheel Base
4) Seat Stays Double Taper φ22.2xt0.8~
13

[A fork blades oval taper gauge drawing and an exploded drawing of oval butted tapered tubes with cross sections W-W’, X-X’, Y-Y’ and Z-Z’, above the OVAL BUTTED. TAPER TUBING GROUP table, on the left page. The right page shows the TANDEM TUBING SET with a tandem frame drawing numbered 10 to 100, its tube table and an “On order” list. The “Rib” sketch is a cross section with one thick side marked.]

— Page 7 —
CFRP
カーボンファイバー/エポキシフレームについて
イシワタは鉄鋼の限界を超えて、さらに強度、剛性の高い素材を開発しました。それがカーボンファイバー/エポキシコンポジットチューブです。
スポーティングサイクルフレーム用チューブに要求される内容には疲れ強さの高いこと、たわみにくいこと、軽いことがあげられる。そのチューブをフレーム体に構成する方法が容易で確実であることが望まれる。長年の歴史をもつクロームモリブデンチューブと低温ロウ接によるフレーム構造については、ほゞ確立されたものといってよい。たゞしこの方法による加熱のためチューブの変化を避けることがむずかしい。ロウ接ジョイント部分が合金鋼管よりも強いというテスト結果が出ている。ラグ仕立であろうとラグレス仕立であろうと結果は同じであった。クロームモリブデンチューブは加熱に対して硬化や軟化が無く良い素材といえる。この素材を軽量化のため肉厚をそいでいくと、たわみがひどくなってしまう。イシワタは015セットとして実用上の限界に近いチューブφ28.6外径で0.6×0.35D.Bを供給しているが、022セットの0.9×0.6D.Bに比べて、たわみに対して60%しかがんばれない。
このように合金鋼管の軽量化の行きつくところは大きなウィップを生ずるフレームとなる。これはCrMo鋼を含む鉄鋼の宿命ともいえる。
CFRPチューブはスポーティングサイクルの要求する強く、そして軽くという希望をかなえることができる。なによりもCFRPのタフネスぶりを示すのは疲れ限度において47kg/mm^2の応力に耐えることだろう。この値はCrMo鋼の2倍以上である。さらに振動減衰性においてすぐれていることからライダーにショックを伝えにくい効果を期待できる。
CFRPは高級トラック、ロードレーシング用チューブとして最適といえる。
イシワタはCFRPチューブをいかすため接着剤によるフレーム製作法を確立しました。実走テスト、振動テストを経て、従来の低温ロウ接合金鋼管フレームと比べて優るとも劣らないフレーム体を製造、販売しております。
各種素材との比強度、比剛性比較表
イシワタ CFRP (カーボンファイバー)
イシワタ CrMo
イシワタ Al合金 (アルミ)
参 考 チタン合金
参 考 マグネ合金
参 考 ひ の き
イシワタ 普 通 鋼
10 20 30 40 50 60
比強度: 抗張力/比重
数値大なるものほど強い
比剛性: 弾性率/比重
数値大なるものほどたわまない
14

STRENGTH OF ISH[hidden]CrMo
TUBI[hidden]ARATIVE TABLE
Material / Test Program | ISHI[hidden]TA CFR[hidden] φ28.6×t1.7 | ISH[hidden]TA Cr-M[hidden] φ28.6×t0.9/0.6DB | ISHIWATA Cr-Mo φ28.6×t0.6/0.35DB
Length[hidden] | [hidden] | [hidden] | [hidden]
Weight(gr) | 150 | 325 | 200
[hidden] Modulus of [hidden] t mm[hidden] | 12.4×10^4[?] | 10.9×10^4[?] | 6.5×10^4[?]
[hidden] Strength(kg) | 530 | 480 | 305
Reiterate Bending test [hidden] 100kg loaded[?] | [hidden] | [hidden] | 62,000Times Distruct
Reiterate Bending test [hidden] | [hidden] | [hidden] |
REITHERATE BENDING FATIGUE TEST
UF-300 Fatigue tester
Cramper
Frange unit NTN 206J
510[?]
(1) Number of vibration/minutes. 1,000 c/m
(2) Amptitude ±4mm[?]
(3) Test under the constant load
(4) Load lookg. Max 160,000 cycle
We test tube on 150kg. Load which passed on 100kg.
Load we stop the test on max number of vibration
280,000[?] cycle.

[The Japanese CFRP page on the left, with a heading, a paragraph in Japanese and a bar chart comparing the specific strength and rigidity of Ishiwata CFRP, CrMo, aluminum alloy, titanium, magnesium, Japanese cypress and ordinary steel. The right page is a faint, doubled scan: a CFRP comparative table and a fatigue test drawing with a second, mirror-image layer of English CFRP text and a bar chart showing through from the other side of the sheet.]

— Page 8 —
CFRP
An explanation of Carbon Fiber Epox-Resin Composit Material
ISHIWATA has developed new material for bicycle frame tubing, The CFRP have a high-potential performance, strength and rigidity which excel the performance of steel tubing.
A factor of bicycle frame tubing are high potencial fatigue, less flexibility and light weight.
and we demand the process to build up a bicycle frame are simple and pasitive work.
Brazing process of the steel tubing were fixed but this process spoils the performance of steel tubing by heating, in ordinary a very thin steel tubing have more flexibility, ISHIWATA produces 015, 0.6/0.35 double butted tubing, it’s a boundary to use the tubing for bicycle frame, which flexibility are 60% of our 022 0.9/0.6 Double butted tubing.
The CFRP tubing user who can got agood sporting bicycle which are strong and light weight. because the CFRP bears up against 47kg/mm^2 of fatigue which are double score of Cr-Mo steel tubing, (see bellow fig.)
and the CFRP has the oscillation-damping which keep a rider from vibration. The CFRP tubing are sueted for raod and trak racer. ISHIWATA has defined the process to builed up the bicycle frame by starch.
The CFRP bicycle frame are produced and sold by ISHIWATA.
Specific strength and rigidity comparative table
10 20 30 40 50 60
ISHIWATA CFRP (Carbon fiver)
ISHIWATA CrMo
ISHIWATA Al-Alloy
Titanium-Alloy
Magnesium-Alloy
Japanese cypress
Low Carbon strong
Specific strength: Strength/Specific gravity
Material which have a big numbers is strong
Specific rigidity: Modulus of elasticity/Specific gravity
Material which have a big numbers is less-flexibility

STRENGTH OF ISHIWATA CFRP AND CrMo TUBING COMPARATIVE TABLE
Material / Test Program | ISHIWATA CFRP φ28.6×t1.7 | ISHIWATA Cr-Mo φ28.6×t0.9/0.6DB | ISHIWATA Cr-Mo φ28.6×t0.6/0.35DB
Length(mm) | 610 | 610 | 610
Weight(gr) | 150 | 325 | 200
Bending test Modulus of elasticity t mm^2 | 12.4×10^4[?] | 10.9×10^4[?] | 6.5×10^4[?]
Bending test Strength(kg) | 530 | 480 | 305
Reiterate Bending test Number of fatigue 100kg loaded | 160,000Times Pass | 160,000Times Pass | 62,000Times Distruct
Reiterate Bending test Number of fatigue 150kg loaded | 280,000Times Pass | 61,000Times Distruct | —
REITHERATE BENDING FATIGUE TEST
UF-300 Fatigue tester
Cramper
Frange unit NTN 206J
510
(1) Number of vibration/minutes. 1,000 c/m
(2) Amptitude ±4mm
(3) Test under the constant load
(4) Load lookg. Max 160,000 cycle
We test tube on 150kg. Load which passed on 100kg.
Load we stop the test on max number of vibration 280,000 cycle.

[The English CFRP page on the left, with the heading “An explanation of Carbon Fiber Epox-Resin Composit Material”, a paragraph and a bar chart of specific strength and rigidity for Ishiwata CFRP, CrMo and other materials. The right page shows the strength comparative table for CFRP and CrMo tubing and a drawing of the UF-300 fatigue tester with its test conditions. Neither page shows a printed folio.]

— Page 9 —
An explanation of Carbon Fiber Epox[hidden] Resin Composit[hidden] Material
ISHIWATA has developed new material for bicycle frame tubing. The CFRP have a high-potential performance, strength and rigidity which excel the performance[?] of steel tubing.
A factor of bicycle frame tubing are high potencial fatigue, less flexibility[?] and light weight.
and we demand the process to build up a bicycle frame are simple and positive[?] work.
Brazing process of the steel tubing were fixed but this process spoils the performance of steel tubing by heating, in ordinary a very thin steel tubing have more flexibility. ISHIWATA produces 015, 0.6 / 0.35 double butted tubing, it’s a boundary to use the tubing for bicycle frame, which flexibility are 60% of our 022 0.9 / 0.6 Double butted tubing.
The CFRP tubing user who can got agood sporting bicycle which are strong and light weight. because the CFRP bears up against 47kg / mm² of fa[hidden]gue wh[hidden]ch are double score of Cr-M[hidden]ubing, (see[?] [hidden]) and the CFRP has the oscilla[hidden] damping which [hidden] a rider [hidden] and the CFRP tubing are sueted for raod and trak racer. ISHIWATA has [hidden] the process to builed up the bicycle frame by starch.
The CFRP bicycle frame are produced and sold by ISHIWATA.
Specific[?] strength and rigidity comparative table
ISHIWATA CFRP (Carbon fiver[?])
ISHIWATA CrMo
ISHIWATA Al-Alloy
Titanium-Alloy
Magnesium-Alloy
Japanese cypress
Low Carbon strong
Strength / Specific gravity
Material which have a big numbers is strong
Modulus of elasticity[?] / Specific gravity
Material which have a big numbers is less-flexibility[?]
14

イシワタCrMoとの強度比較表
素材名 | イシワタ CFRP φ28.6×t1.7 | イシワタ Cr-Mo φ28.6×t0.9/0.6DB | イシワタ Cr-Mo φ28.6×t0.6/0.35DB
項目 | | |
長サ(mm) | 610 | 610 | 610
重さ(gr) | 150 | 325 | 200
曲ゲ弾性率 t mm² | 12.4×10⁴ | 10.9×10⁴ | 6.5×10⁴
曲ゲ強度(kg) | 530 | 480 | 305
繰り返し曲ゲ疲労 100kg荷重 | 160,000回 異状なし | 160,000回 異状なし | 62,000回で 破断
繰り返し曲ゲ疲労 150kg荷重 | 280,000回 異状なし | 61,000回で 破断 | ――――
繰り返し曲げ疲労測定法
UF-300疲労試験機による
フランジユニット NTN 206J
つかみ治具
510
(1) 1,000c/m
(2) 振幅は±4mm以下
(3) 一定荷重下試験
(4) 荷重 100kg 上限 160,000cycle(振動試験の80,000×2)
100kgを通過したものは150kgの荷重下で行った。
上限は280,000cycleとして試験を中止。
15

[Left page: a faint English text page titled “An explanation of Carbon Fiber Epox Resin Composit Material” with a faded bar chart of specific strength and rigidity for ISHIWATA CFRP, CrMo, aluminum alloy, titanium alloy, magnesium alloy, Japanese cypress and low carbon steel, overprinted by a mirrored table and test notes that show through from the reverse side of the sheet. Right page: a Japanese table comparing ISHIWATA CFRP and two Cr-Mo tubes, with a line drawing of the UF-300 fatigue tester and a numbered list of test conditions.]

— Page 10 —
カーボンファイバー
CARBON FIBER
Special tubes
TUBING SET
Description | Out side diameter | Length
Top tube | 25.4 | 580
Seat tube | 28.6 | 600
Down tube | 28.6 | 600
Chain stays | 22.2 taper | 360
Seat stays | 15.0 taper | 500
Set of 7 pcs
gr. 620
Lugs: Head (1pc), Bottom, Seat
Stay ends: Request
Total gr. 800
アルミ合金
AL-ALLOY
Special tubes
TUBING SET
Description | Out side diameter | Length
Top tube | 25.4 | 600
Seat tube | 28.6 | 600
Down tube | 28.6 | 600
Chain stays | 22.2/12.0 | 360
Seat stays | 15.0/10.0 | 500
Set of 7 pcs
gr.
Lugs: Head (1pc), Bottom, Seat
Stay ends: Request
Total gr. 800
16
LUGS
FOR CFRP AND AL-ALLOY FRAME
Head Lug
Seat Lug
B.B Shell
On request: Stay ends model
17

[Two tubing sets, Carbon Fiber and Al-Alloy, each shown as seven loose tubes in a drawing on a green panel beside a table of description, outside diameter and length, with the Al-Alloy set weight left blank. Right page: drawings of a head lug, a seat lug and a B.B shell for CFRP and Al-Alloy frames on a green panel. Small brown spots appear near the gutter.]

— Page 11 —
CARBON FIBER FRAME
AL-ALLOY FRAME
18
MINI CYCLE TUBING
OVAL BENT
Callouts: Bent 700r, A, 49, 34.5
φ42.7×t1.6 A:Max 430
OVAL STRAIGHT
Callouts: A, 49, 34.5
φ42.7×t1.6 A:Max 430
SEAT TUBE
Callouts: A
φ38.1×t2.0 A:Free
φ34.0×t2.3 A:Free
φ34.0×t1.6 A:Free
U TYPE
Callouts: Bent r
φ38.1×t2.0×Free r:150-130-100
φ34.0×t2.3×Free r:100
φ31.8×t1.6×Free r:130
19

[Left page: two frame and fork drawings on green panels, a Carbon Fiber Frame and an Al-Alloy Frame. Right page: Mini Cycle Tubing, with drawings of oval bent, oval straight, seat tube and U type tubes on green panels and dimension drawings with size lists beside them.]

— Page 12 —
SECTION 2
BUTTED TUBES AND TAPER TUBES
1. Butted frame tubes 21, 22
Single (SB) and double (DB)
CrMo —Hi-tension— Law carbon
2. Butted steering columns 23
Single (SB) and straight gauge
3. Fork blades 24
4. Chain stays 25
5. Seat stays 26
20
BUTTED FRAME TUBES
While bicycle are moving, at the frame tubing the strain apper proportionaly the stress. When the strain over the fatigue strength limit, frame tubing are damaged. The value of the strain are vary with materials, volum and forming.
However the stress loades section is limited to the near of joint. ISHIWATA butted tubing endure that extremity stress. End of tubing are thicken, and to get the light weight tubing, central of tubing are thin.
Please you choice a double or single butted tubing for your design or formation.
走行中フレームに生ずる応力の度合に比例しヒズミが現われ、チューブ疲労限界を越すとき、歪曲破損をひき起す。その度合は材料、寸法、フレーム形態のちがいにより大きく変ってくるが、応力の集中する個所はチューブの結合部付近が最も多い。バテットチューブの特徴はこうした極端な応力を緩和させるために使用されている。結合部(管端)の肉厚を増し、反対に中央部の肉厚を薄くし、応力とのバランスを良くし、フレームウェートの面からも重要といえる。フレームの設計、構造上からダブル、シングルバテットの2種類が使い分けられる。
DOUBLE BUTTED FRAME TUBES
Callouts: 10 20 30
(1) Should be put long thicken butted side of top, down tube beside head. And long thicken butted side of seat tube beside bottom.
(2) In case of cutting tube, please cut the enamel-marked side of tube.
(1) Top down tube はバテットシロの長い方をそれぞれ Head 側にする Seat tube はバテットシロの長い方を Bottom 側にする。
(2) チューブをカットするときは、エナメル側をカットして下さい。
Callouts: L, Butted 80, Taper 50, Taper 50, A, T, T’, T, φD
List-1 Dimensions in mm
Material | Mark | Diameter φD | Thickness T/T’ | Butted A (Enamel side) | Length L | Weight
CrMo steel | 10C | 25.4 | 0.8/0.5 DB | 130 | 580 | gr. 240
| 11C | 25.4 | 0.9/0.6 DB | 130 | 580 | gr. 250
| 13C | 25.4 | 1.0/0.7 DB | 130 | 580 | gr. 305
| 15C | 25.4 | 0.6/0.4 DB | 130 | 580 | gr. 170
| 17C | 25.4 | 0.7/0.4 DB | 130 | 580 | gr. 205
| 20C | 28.6 | 0.7/0.4 DB | 150 | 610 | gr. 230
| 30C | 28.6 | 0.8/0.5 DB | 150 | 610 | gr. 280
| 31C | 28.6 | 0.9/0.6 DB | 150 | 610 | gr. 325
| 32C | 28.6 | 1.0/0.7 DB | 150 | 610 | gr. 350
| 35C | 28.6 | 0.6/0.35 DB | 150 | 610 | gr. 150
Hi-tension steel | 10H | 25.4 | 1.2/0.85 DB | 120 | 580 |
| 30H | 28.6 | 1.2/0.85 DB | 150 | 610 |
21

[Left page: the title page of Section 2, Butted Tubes and Taper Tubes, with a bicycle wheel drawn in place of the letter O and a five-item contents list. Right page: Butted Frame Tubes in English and Japanese, a drawing of double butted tubes numbered 10, 20 and 30 on a green panel, a butted tube dimension drawing and List-1 of CrMo and Hi-tension steel tubes. Small brown spots appear near the gutter.]

— Page 13 —
SINGLE BUTTED FRAME TUBES
Callouts: 10 20 30
(1) In case of cutting tube, please cut the thin-gauge (enamel-marked side) of tube.
(1) チューブをカットするときは肉薄側(エナメル)をカットして下さい。
Callouts: L, A, B, T, T’, φD
List-2 Dimensions in mm
Material | Mark | Diameter φD | Thickness T/T’ | Butted A | Taper B | Length L | Weight
CrMo steel | 12C | 25.4 | 0.9/0.6 SB | 100 | 50 | 580 | gr. 260
| 21C | 28.6 | 0.8/0.5 SB | 100 | 50 | 610 | gr. 250
| 22C | 28.6 | 0.9/0.6 SB | 100 | 50 | 610 | gr. 305
| 23C | 28.6 | 1.0/0.7 SB | 100 | 50 | 610 | gr. 360
| 25C | 28.6 | 0.7/0.4 SB | 100 | 50 | 610 | gr. 195
Material | Mark | Diameter φD | Thickness T/T’ | Butted A | Taper B | Length L |
Hi-tension steel | 11H | 25.4 | 1.2/0.85 SB | 100 | 50 | 580 |
| 20H | 28.6 | 1.2/0.85 SB | 100 | 50 | 610 |
| 21H | 28.6 | 1.6/1.2 SB | 100 | 50 | 610 |
| 22H | 28.6 | 1.8/1.2 SB | 100 | 50 | 610 |
Low carbon steel | 10S | 25.4 | 1.4/0.95 SB | 70 | 40 | Max 580 |
| 11S | 25.4 | 1.6/1.2 SB | 90 | 37 | Max 580 |
| 12S | 25.4 | 1.8/1.2 SB | 90 | 37 | Max 580 |
| 13S | 25.4 | 2.2/1.2 SB | 80 | 50 | Max 580 |
| 14S | 25.4 | 1.8/1.2 SB | 270 | 50 | Max 580 |
| 20S | 25.4 | 1.6/1.2 SB | 220 | 30 | Max 610 |
| 21S | 25.4 | 1.8/1.2 SB | 230 | 37 | Max 610 |
| 22S | 25.4 | 2.4/1.2 SB | 230 | 50 | Max 610 |
| 23S | 28.6 | 1.6/1.2 SB | 230 | 30 | Max 610 |
| 24S | 28.6 | 1.8/1.2 SB | 250 | 50 | Max 610 |
| 25S | 28.6 | 2.4/1.2 SB | 250 | 50 | Max 610 |
| 30S | 28.6 | 1.4/0.9 SB | 60 | 37 | Max 610 |
| 31S | 28.6 | 1.6/1.2 SB | 90 | 37 | Max 610 |
| 32S | 28.6 | 1.8/1.2 SB | 90 | 37 | Max 610 |
| 33S | 28.6 | 1.8/1.4 SB | 90 | 37 | Max 610 |
22
BUTTED STEERING COLUMNS
ISHIWATA CrMo 80C spline butted steering column.
Length of thread 60mm. Nominal. 24-1″ gr. 170
φ25.4×2.2-20/1.6×200-300
Callouts: t2.2×60, t2.0
Callouts: L, A, B, T, T’, φD
《CrMo》 Dimensions in mm
Mark | Diameter φD | Thickness T/T’ | Butted A | Taper B | Length L | Thread | Weight
80C | 25.4 | 2.2/1.6(spline) | 50 | 25 | Max 300 | Nominal | gr. 170
81C | 25.4 | 2.2/1.6 | 50 | 25 | Max 300 | 60 | gr. 205
《Hi-tension》
Mark | Diameter φD | Thickness T/T’ | Butted A | Taper B | Length L | Thread |
82H | 25.4 | 2.7/1.6 | 50 | 25 | Max 300 | Max 60 |
83H | 25.4 | 2.7/1.6 | 30 | 25 | | |
84H | 25.4 | 2.7/2.1 | 50 | 25 | | |
《Low carbon》
Mark | Diameter φD | Thickness T/T’ | Butted A | Taper B | Length L | Thread |
80S | 25.4 | 2.7/1.6 | 50 | 25 | Max 300 | Max 60 |
81S | 25.4 | 2.7/1.6 | 30 | 25 | | |
82S | 25.4 | 2.7/2.1 | 50 | 25 | | |
83S | 25.4 | 2.9/1.9 | 50 | 25 | | |
88S | 25.4 | 1.6 | Straight Cage | | | |
On order: Inch size, Franch size (mm)
23

[Left page: Single Butted Frame Tubes, a drawing of tubes numbered 10, 20 and 30 on a green panel, a butted tube dimension drawing and List-2 in two tables of CrMo, Hi-tension and low carbon steel tubes. Right page: Butted Steering Columns, a cutaway drawing of a splined threaded column, a cross section and dimension drawing, and three tables for CrMo, Hi-tension and low carbon columns; in the Hi-tension and low carbon tables the Length and Thread cells span the rows [spans rows], with Straight Cage spanning the Butted and Taper columns in the last row.]

— Page 14 —
FORK BLADES
NOMINAL DIMENSION
Callouts: 400, Taper 300, φ12
OVAL/ROUND
Callouts: A, B
Mark | A x B | Thickness | Weight
70C | 29/16 | 1.0/0.9 TG | gr. 320
71C | 29/16 | 1.0 | gr. 340
73C | 28/20 | 1.0 | gr. 380
74C | 28/20 | 1.5 | gr. 380
ROUND
Callouts: C
Mark | C | Thickness | Weight
70C | φ23.0 | 1.0/0.9 TG | gr. 320
71C | φ23.0 | 1.0 | gr. 340
73C | φ24.0 | 1.0 | gr. 380
75C | φ22.2 | 1.0 | gr. 310
Callouts: 395 Nominal, Bent R, Rake
Bent R
150-180-220
400
Rake
40-55-60
END FORMING
See illustration on page 26
Straight cut
Domed
Endmilled
Dia-cut
Slot length
Max 15mm
Slot wide
4.0-5.0-6.0mm
Special slot for track ends
Callouts: Max 30, 5
24
CHAIN STAYS
NOMINAL DIMENSION
Callouts: 410, Taper 310, φ12, φ22.2
Mark | Thickness | Weight
50C | 0.8 | gr. 325
51C | 0.55 | gr. 210
50H | 1.0 |
ROUND OVAL ROUND
Callouts: 410, Taper 310, 20, φ12, φ22.2
Mark | Thickness | Weight
52C | 0.8 | gr. 385
FLUTE
Callouts: X-X’, X, X’, Max 80, 50-80, 5
FLUTE AND INDENT
Callouts: Y-Y’, Max 50, 40-50, Y, Y’, Max 80, 50-80, 5, 5
ROUND OVAL ROUND
Callouts: Z-Z’, Max 80, 70-150, Z, Z’, 16-19
See end forming as per fork blade on page 24 and illustration on page 26
25

[Left page: Fork Blades, with a tapered blade photograph, a nominal dimension drawing, oval and round blade tables, a bent blade drawing with a second photograph, four end forming drawings and a track end slot drawing. Right page: Chain Stays, with two tapered stay photographs, nominal dimension drawings with two small tables, and three drawings of flute, flute and indent and round oval round forming on green panels.]

— Page 15 —
SEAT STAYS
NOMINAL DIMENSION
Callouts: 610-550, Taper 430-380, φd, φD
Mark | Diameter D/d | Thickness | Weight
60C | 14.5/10.0 | 0.6 | gr. 230
61C | 14.5/10.0 | 0.8 | gr. 280
62C | 16.0/10.0 | 0.8 | gr. 320
60H | 14.5/10.5 | 1.0 |
61H | 14.0/10.5 | 1.0 |
TOP END FORMING
DOUBLE TAPER
FLAT WITH BRAZED
END FORMING ILLUSTRATION See page 24
STRAIGHT CUT
DOMED
ENDMILLED
DIA-CUT
26
ishiwata memo
SECTI[hidden]N-3
FRONT FORKS
ISHIWATA produce the Front Fork 250,000-300,000 [illegible] [illegible]. In this section we introduce our special hand-made forks.
Our another products model are for child, mini and light weight.
Please show A, B, C, length and the [illegible] [illegible]
[illegible]
SPECIAL FORK [illegible] [illegible]
[illegible] [illegible] [illegible]
[illegible] 26 [illegible] wheel
[illegible] column and blades
Model 555 lost-wax [illegible]
Cp or self color [illegible] to order
27

[Left page: Seat Stays, with a photograph of a tapered stay, a nominal dimension drawing and table, and drawings of top end forming styles and end forming illustrations on green panels. Right page: a very faded Front Forks section page with a light gray drawing of fork outlines and a photograph of a fork and a dropout, the text mostly unreadable, with a mirrored “ishiwata memo” showing through from the reverse of the sheet.]

— Page 16 —
SEAT STAYS
ishiwata memo
NOMINAL DIMENSION [?]
[illegible]
[illegible] Diameter [?] [illegible]
[illegible] | 14.0/20 [?] | [illegible]
[illegible] | 14.0/19.0 [?] | [illegible]
[illegible] | 14.0/19.0 [?] | [illegible]
[illegible] | 14.0/19.0 [?] | [illegible]
[illegible] | [illegible] | [illegible]
[illegible] END FORMING [?]
[illegible] STRAIGHT [?]
TAPE WITH [illegible]
END FORMING ILLUSTRATION See page 24
STRAIGHT CUT
[illegible]
[illegible]
DIA-CUT
26

SECTION-3
FRONT FORKS
Inch-24 threaded
4.0
Free length
22.2, 21.2φ
A
B
C
ISHIWATA produce the Front Fork 250,000~300,000 pcs./month. In this section we introduce our special hand-made forks.
Our another products model are for child, mini, and light-weight.
■Please show A, B, C, length and the kind of plating at your order.
イシワタの前ホークは月産20~30万の生産をしております。
ここにのせたものは、手造りの高級前ホークの一部です。この他、幼児用からミニサイクル、輸出用、スポーツ車に至るまで数多くのものを作っております。
■ご注文のとき、左図のA、B、C寸法、又メッキの種類をご明記下さい。
SPECIAL FORK HAND MAKE
Model 255
—Road type—
26″, 27″ Wheels
CrMo butted column and blades
Model 555 lost-wax crown
Cp or self color finish to order
27

[The left page is a faded, washed-out show-through of a Seat Stays page with a mirrored “ishiwata memo” heading, ghosted tube photographs and a nearly unreadable dimension table, and the right page is Section-3 Front Forks with two fork drawings, an English and Japanese introduction and an illustration of the hand-made Model 255 road fork with a crown detail.]

— Page 17 —
Special Fork Hand Make
Model 252
—Track Type—
26″, 27″ Wheels
CrMo Butted Column and Blades
Model 512 Cold Forging Crown
Cp or Self Color Finish to Order
Model 235
—Touring Type—
26″, 27″ Wheels
Hi-tension Butted Column and Blades. Model 535 Pressed Steel Crown.
Special Fork Hand Make
Model 245
—Road Type—
26″, 27″ Wheels.
CrMo Butted Column and Blades.
Model 514 Crown
Cp or Self Color Finish to Order
Model 225
—Touring Type—
26″, 27″ Wheels
Hi-tension Butted Column and Blades. Model 525 Pressed Steel Crown.
28

SECTION-4
FORK CROWNS AND COVERS
B
φD
A
C
Between Blades
Model No. | A | B | C | φD | Gauge
555 | 28 | 20 | 60 | 25.4 |
565 | 29 | 16 | 62 | 25.4 |
512 | 23.0-22.2Round | | 60 | 25.4 |
514 | 29 | 16 | 60 | 25.4 |
515 | 29 | 16 | 60 | 25.4 | 2.6
525 | 29 | 16 | 60 | 25.4 | 2.6
535 | 29 | 16 | 61 | 25.4 | 2.3
503 | 29 | 16 | 62 | 25.4 | 2.3
505 | 29 | 16 | 60 | 25.4 | 2.3
504 | 29 | 16 | 60 | 25.4 | 2.3
508 | 29 | 16 | 61 | 25.4 | 2.3
501 | 29 | 16 | 60 | 25.4 | 3.2
29

[Four front forks in drawings with Models 252, 235, 245 and 225, two with crown detail drawings, on the left page, and Section-4 Fork Crowns and Covers with a crown dimension drawing and a table of crown models on the right page. In the Model 512 row one cell reads across the A and B columns [spans columns A to B].]

— Page 18 —
Model 555
Model
555 Road type lost-wax for oval blades—28/20
565 Road type lost-wax for oval blades—29/16
512 Track type cold forging for round blades—φ23.0, φ22.2
514 Casting iron for oval blades—29/16
525 Pressed steel crown top
535 well-shaped edge for oval blades—29/16
515 Casting iron for oval blades—29/16
Model 565
Model 525
Model 512
Model 535
Model 514
Model 515
30

Model 501
Model 503
Model 504
Model 508
Model 505
Model 805
Brass
Full cover-chrome plated
Model 801
Steel or brass, chrome plated half cover-double center hole
Model 802
Steel chrome plated half cover-single center hole
Model 804
Brass
Half cover-single center hole for Model 508
Model 807
Steel chrome plated half covers
31

[Fourteen fork crown illustrations on yellow panels, the Models 555, 565, 512, 514, 525, 535 and 515 beside a list of crown descriptions on the left page, and the Models 501, 503, 504, 508 and 505 with covers 805, 801, 802, 804 and 807 on the right page. The cover number 801 is set with a spaced numeral one.]

— Page 19 —
SECTION-5
FORK AND STAY ENDS
Model 700
Model 600
Model
700 Cold forging gauge 5.5 single eye
600 M6P1 Angle 70°
F·Ends 8.5
702 Rib ends gauge 4.5 single eye
603 M6P1 Angle 65° pressed
F·Ends 9.2 — 8.5
703 Rib ends gauge 4.5 double eye
602 M6P1 Angle 65°
F·Ends 9.2—8.5
713 Gauge 5.0 single eye
610 M6P1 Angle 65°
Gauge 5.0 9.2—8.5
714 Gauge 5.0 double eye
612 M6P1 Angle 65°
Gauge 5.0 9.2—8.5
Model 702
Model 603
Model 713
Model 610
Model 703
Model 602
Model 714
Model 612
32

Model 705
Single eye M6P1
Gauge 4.0
Angle 60°
Model 706
Single eye M6P1
Gauge 4.0
Angle 65°—68°
Model 707
Single eye M5P0.8
Gauge 4.0
Angle 60°
Model 604
Double eye M6P1
Gauge 4.0
Model 607
Single eye φ5.5
Gauge 4.0
Model 708
Double eye M6P1xM5P0.8
Gauge 4.0
Angle 62°
Model 608
Single eye φ5.5
Gauge 4.5
33

[Section-5 Fork and Stay Ends with drawings of Models 700, 600, 702, 603, 703, 602, 713, 610, 714 and 612 and a specification list on the left page, and Models 705, 706, 707, 604, 607, 708 and 608 on the right page. Some end drawings carry their own cast lettering.]

— Page 20 —
SECTION-6
SEAT PILLARS
φ22.2
L
φD
AL-alloy pillars—63S
φD t L
Model 435 26.7×2.5×200
Model 436 26.2×2.5×200
Low carbon steel
φD t L
Model 440 28.6×1.2×260, 300
Model 445 26.2×1.2×200, 230
Model 448 25.8×1.2×200
Model 449 25.4×1.2×200
φ22.2
L
φD
CrMo pillars
φD t L
Model 475 26.2×0.8×200
Model 476 26.8×0.8×200
34

SECTION-7
HEAD FITTING SET
GALLANT-RD1
FOR ROAD TYPE
Set of 8pcs
Chrome plated
Weight gr. 170
3010 Locking nut -24 threads
3011 Locking washer
3012 Upper head cone -24 threads
3013 Head cup upper
3014 Head cup lower
3015 Lower bearing cone
3016 Ball retainers
3010
3011
3012
3013
3014
3015
3016
GALLANT-TR1
AL-ALLOY HEAD SET WITH BALL CASING
Set of 6pcs gr. 109
3050 Locking nut -24 threads (Al-alloy)
3051 Micro adjuster (Al-alloy)
3052 Upper head cone -24 threads (Al-alloy)
3053 Head cup upper with ball casing
3054 Head cup lower with ball casing
3055 Stationary cone (Al-alloy)
35

[Section-6 Seat Pillars with two pillar drawings and size lists by model on the left page, and Section-7 Head Fitting Set with the Gallant-RD1 for road type, a drawing and photographs of its eight parts, and the Gallant-TR1 aluminum alloy head set with six parts on the right page.]

— Page 21 —
SECTION-8
FRAME FITTING PARTS
PARTS FOR DERAILLEUR Braze-on
2010 Change lever stop
2011 Change lever boss
2012 Cable ferrule-R
2013 Cable ferrule-F
2014 Cable nipple
2015 Cable stop
2016 Cable stop
2017 Cable stop
2018 Double cable stop
2019 Cable stop
2010
2011
2012
2014
2013
2015
2016
2017
2018
2019
2050 Adjusting screws
2051 Braze-on inner tube
2052 Braze-on inner tube reinforcement
2053 Wire ling
2054 Braze-on brake boss for allen-key
PARTS FOR CALIPER BRAKE
2050
2051
2052
2053
2054
36

PARTS FOR AFT-TRIANGLE—1
2200 Seat pin boss Ref. 2203, 2204
2201 Seat pin boss L. 25—31 Ref. 2205, 2206
2202 Seat pin boss L. 23 Ref. 2204
2203 CrMo seat pin M6xP1.0 φ8×19—21
2204 Titanium seat pin M6xP1.0 φ8×22
2205 CrMo seat pin M6xP1.0xL.18
2206 CrMo seat pin M6xP1.0xL.25
2200
2201
2202
2203
2204
2205
2206
2250
2251
2252
2253
2254
PARTS FOR AFT-TRIANGLE—2
2250 Seat topper
2251 Seat topper
2252 Seat topper
2253 Seat top flap
2254 Seat top flap
PARTS FOR AFT-TRIANGLE—3
2300 Bridge reinforcement
2301 Bridge reinforcement
2302 Boss for brake bolt
2303 Upper bridge
2304 Lower bridge
2305 Upper bridge
2300
2301
2302
2303
2304
2305
37

[Section-8 Frame Fitting Parts with drawings of braze-on derailleur parts 2010 to 2019 and caliper brake parts 2050 to 2054 on the left page, and drawings of aft-triangle parts 2200 to 2206, 2250 to 2254 and 2300 to 2305 on the right page. This image is a smaller single scan than most others.]

— Page 22 —
PARTS FOR FRONT FORK—Braze on
2100 Tongues
2101 Tongues
2102 Tongues
2103 Canti brake boss
2104 Canti brake boss
2105 Canti brake boss
2106 Allen-key for brake bolt M6xP1.0
2107 Dynamo braket
2108 Dynamo braket
2109 Dynamo braket
2110 Dynamo braket
2111 Dynamo braket
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2150 Bottle cage boss
2151 Bottle cage bolts
2152 Bottle cage reinforcement
2153 Chain guide
2154 Pump peg
2155 Pump peg
2156 Wing nut M5xP0.8
OTHER PARTS
2150
2151
2152
2153
2154
2155
2156
○本仕様は予告なく変更することがあります。
38

イシワタサイクルフレーム用チューブの基礎データー
| 外径φ28.6管の肉厚(mm) | 長さ610mmの重さ(g) | 真円度(mm) | 抗張力 (kg/mm²) (前)低温ロウ接(後) | 伸び(%) (前)低温ロウ接(後)
イシワタ 022CrMo SAE4130 | 0.9×0.6 DB | 325 | 0.10 | 79.6→76.8 | 4.8→ 5.6
イシワタ 025CrMo SAE4130 | 0.8 PG | 330 | 0.05 | 66.5→64.3 | 7.9→ 8.0
イシワタ 普通鋼 SAE1010 | 1.6×1.2 SB | 557 | 0.05 | 59.9→31.4 | 9.9→49.9
イシワタ アルミアロイ 7178S、T6 | 1.2 PG | 170 | —— | 61.0 | 11.0
イシワタ カーボンファイバー +エポキシ — | 1.7 PG | 150 | —— | 95.0 | 1.0
参考 イギリス製 SAE1036b+Mo | 0.8×0.55SB | 260 | 0.20 | 65.1→88.7 | 14.8→ 3.6
参考 イタリー製 SAE4130 | 0.9×0.6 DB | 340 (600mm) | 0.15 | 76.2→75.5 | 8.0→ 6.5
試料をそれぞれ化学分析してその成分から、あらゆる鉄鋼に番号表記しているSAEの規格にあてはめてみた。 アルミとカーボンファイバーをのぞく。 | DB: ダブルバテッド 両端肉厚 PG: プレーンケージ 均一肉厚 SB: シングルバテッド 片端肉厚 | | 丸さのバラツキ具合。 小さい数値のものが良い。 普通鋼が合金鋼よりもよい。 | 加熱前と後の差のあまりないのが良い。 数値はロウ接後を注目すべきでしょう。 接着剤の場合、素材への影響がほとんどない。合金鋼管は普通鋼管の2倍以上の強度を有する。高い疲れ強さを期待できる。 | 伸びの値の大きいほどもろくない。 加熱前と後の差のあまりはなはだしくないのが良い。 イシワタCrMoはロウ接後伸びが回復している。 SAE1010普通鋼管は軟化してしまうことが判る。

[The left page lists braze-on front fork parts 2100 to 2111 and other parts 2150 to 2156 with drawings, and the right page, set sideways, is a Japanese table of basic data for Ishiwata cycle frame tubes with tube, weight, roundness, tensile strength and elongation figures and notes. A dark stain with a torn paper scrap at the gutter lies near the top of the right page, outside the table text.]