Ishiwata Cycle Tubing Brochure (Undated) — EXO and EX Exactus Stress Dispersing Tubes, BMX and MTB New Line Tubing

Ishiwata’s brochure for its “New Line” tubing: the EXO and EX (Exactus) stress dispersing tube sets, then BMX and mountain bike tubing, each with its tube table, in English and Japanese. No year is printed.

— Page 1 (front cover) —
ISHIWATA
CYCLE TUBING
RUN FARTHER WITH LESS MOTION

[Front cover of the ISHIWATA CYCLE TUBING brochure showing a line drawing of a road bicycle with drop handlebars on a perspective blue grid under a red to pale gradient. Three hole-punch holes show along the left edge.]

— Page 2 —
ISHIWATA
NEW LINE TUBING SET
EXO,EX (Exactus)
応力分散チューブ STRESS DISPERSING TUBE
石渡は自転車の基本的な走行応力の法則に沿い走行中に発生する応力に最適な肉厚分布を研究し軽量化プラス強度を実現させた。フレームチューブを開発しています。石渡EX (EXACTUS) は、従来の既成概念による安易な軽量化より脱皮し理想の軽量化プラス強度をめざし
“より少ない力でより遠くへ”
をテーマに開発したチューブセットで従来のダブルバチットより重量軽減を図り強度バランスを従来より良い結果が得られるようになった理想のチューブセットです。石渡EXACTUSシリーズは、EXOセット、EXセットに分類されています。
クオダラブル[?] バット[?] トリプル バット[?]
EXOは QUADRUPLE BUTTED EXは TRIPLE BUTTED を採用した最高級チューブセットです。
Ishiwata made a study of the optimal distribution of tube wall thicknesses to meet the stress encountered during use, and developed a stronger and lighter tube.
The Ishiwata EX (EXACTUS) concept is the ideal solution to an age old problem since it offers less weight, more strength and a better working balance than existing double butted tubes. Developed under the theme
“RUN FARTHER WITH LESS MOTION,”
it discards the traditional concept of reducing the weight by simply using tubes with a thinner wall thickness.
The Ishiwata Exactus range comes two ways. The EX type is a triple butted tube and the EXO type is a quadruple butted tube.

[EXO, EX (Exactus) new line tubing set page with a photograph of a group of bare steel tubes on a blue ground, with Japanese and English text about stress dispersing tubes. The small furigana above QUADRUPLE BUTTED and TRIPLE BUTTED are too small to read with confidence. Hole-punch holes and a small notch show along the right edge.]

— Page 3 —
ISHIWATA
NEW LINE TUBING EXO
GUARANTEED BUILT WITH
EXO
CrMo QUADRUPLE BUTTED TUBES, FORKS & STAYS
ISHIWATA
Quadruple Butted
TOP TUBE
600MAX
80 | 50 | 270 | 50 | 150
T1 T2 T3 T4
TAPER
DOWN TUBE
630MAX
120 | 50 | 280 | 50 | 130
T1 T2 TAPER T3 TAPER T2 T4
SEAT TUBE
630MAX
120 | 50 | 280 | 50 | 130
T1 T2 TAPER T3 T4
DESCRIPTION | O/D MM | L MM | EXO-L CRMO | EXO-M CRMO | EXO-H CRMO | EXO-K CRMO+MAGNY | EXO-V MAGNY
| | | T1 | T2 | T3 | T4 | T1 | T2 | T3 | T4 | T1 | T2 | T3 | T4 | T1 | T2 | T3 | T4 | T1 | T2 | T3 | T4
TOP TUBE | 25.4 | 580 | 0.8 | 0.5 | 0.4 | 0.7 | 0.9 | 0.6 | 0.5 | 0.8 | 1.0 | 0.7 | 0.6 | 0.9 | 0.9 | 0.6 | 0.5 | 0.8 | 1.0 | 0.7 | 0.6 | 0.9
DOWN TOBE | 28.6 | 610 | 0.8 | 0.5 | 0.4 | 0.8 | 0.9 | 0.6 | 0.5 | 0.9 | 1.0 | 0.7 | 0.6 | 1.0 | 0.9 | 0.6 | 0.5 | 0.9 | 1.0 | 0.7 | 0.6 | 0.9
[hole]EAT TUBE | 28.6 | 610 | 0.8 | 0.5 | 0.4 | 0.7 | 0.9 | 0.6 | 0.5 | 0.8 | 1.0 | 0.7 | 0.6 | 0.9 | 0.9 | 0.6 | 0.5 | 0.8 | 1.0 | 0.7 | SB
HEAD TUBE | 31.8 | 180 | 1.0PG | 1.0PG | 1.0PG | 1.0PG MAGNY | 1.0PG
CHAIN STAY | 22.2/12 | 410 | 0.8TG | 0.8TG | 0.8TG | 0.8TG MAGNY | 0.9TG
SEAT STAY | CRMO14.5/10 MAGNY14.0/10 | 610 | 0.8TP | 0.8TP | 0.8TP | 0.8TP MAGNY | 0.8TP
FORK BLADE | | 400 | 1.0TG | 1.0TG | 1.0TG | 1.0TG MAGNY | 1.0TG
FORK STEM | 25.4 | 200 | 2.2/16SB SPLINE | 2.2/1.6SB SPLINE | 2.2/1.6SB SPLINE | 2.2/1.6SB MAGNY | 22/6SB
WEIGHT | | | 1,950 | 2,125 | 2,140 | 2,140 | 2,400
OPTION | SEAT STAY FORK BLADE | | 14.5×0.6×610×10 23×1.0×400×12 | 16×0.6×610×10 24×1.0×400×12 | 16×0.8×610×10 28/20×1.0×400×12

[EXO quadruple butted tubing page with a drawing of disassembled frame tubes, an EXO CrMo Quadruple Butted label, wall thickness diagrams for the top tube, down tube and seat tube, and a table for EXO-L, EXO-M, EXO-H, EXO-K and EXO-V. The T1 to T4 cells are one per wall thickness point under each model; the head tube to fork stem and weight cells each span the four T columns of their model, and in the seat tube row the SB cell spans the T3 and T4 columns of EXO-V. The option row figures sit under EXO-L, EXO-M and EXO-H, and a hole-punch hole covers the first letter of the seat tube label.]

— Page 4 —
ISHIWATA
NEW LINE TUBING EX
GUARANTEED BUILT WITH
EX
Cr Mo TRIPLE BUTTED TUBES
ISHIWATA
Triple Butted
TOP TUBE
600MAX
80 | 50 | 270 | 50 | 150
T1 T2 T3
DOWN TUBE
630MAX
120 | 50 | 280 | 50 | 130
T1 T2
SEAT TUBE
640MAX
80 | 50 | 510
T1 T2
DESCRIPTION | O/D MM | L MM | EX-F CRMO | EX-S CRMO+MAGNY | EX-T CRMO | EX-E CRMO+MAGNY | EX-V MAGNY
| | | T1 | T2 | T3 | T1 | T2 | T3 | T1 | T2 | T3 | T1 | T2 | T3 | T1 | T2 | T3
TOP TUBE | 25.4 | 580 | 0.9 | 0.6 | 0.7 | 0.9 | 0.6 | 0.7 | 1.0 | 0.7 | 0.8 | 1.0 | 0.7 | 0.8 | 1.0 | 0.7 | 0.8
DOWN TUBE | 28.6 | 610 | 0.9 | 0.6 | 0.7 | 0.9 | 0.6 | 0.7 | 1.0 | 0.7 | 0.8 | 1.0 | 0.7 | 0.8 | 1.0 | 0.7 | 0.8
SEAT TUBE | 28.6 | 610 | 0.9 | 0.6 | | 0.9 | 0.6 | — | 1.0 | 0.7 | — | 1.0 | 0.7 | — | 1.0 | 0.7 | [hole]
HEAD TUBE | 31.8 | 180 | 1.0PG | 1.0PG MAGNY | 1.0PG | 1.0PG MAGNY | 1.0PG
CHAIN STAY | 22.2/12 | 410 | 0.8TG | 0.8TP MAGNY | 0.8TG | 0.9TP MAGNY | 0.9TP
SEAT STAY | CRMO14.5/10 MAGNY14.0/10 | 610 | 0.8TP | 0.8TP MAGNY | 0.8TP | 0.8TP MAGNY | 0.8TP
FORK BLADE | 29×16/12 | 400 | 1.0TG | 1.0TP MAGNY | 1.0TG | 1.0TP MAGNY | 1.0TP
FORK STEM | 25.4 | 200 | 2.2/1.6SB | 2.5/1.6SB MAGNY | 2.2/1.6SB | 2.5/1.6SB MAGNY | 2.5/1.6SB
WEIGHT | | | | | | |
OPTION | SEAT STAY FORK BLADE | | 14.5×0.6×610×10 23×1.0×400×12 | 16×0.6×610×10 24×1.0×400×12 | 16×0.8×610×10 28/20×1.0×400×12

[EX triple butted tubing page with a drawing of disassembled frame tubes, an EX Cr Mo Triple Butted Tubes label, wall thickness diagrams for the top tube, down tube and seat tube, and a table for EX-F, EX-S, EX-T, EX-E and EX-V. The head tube to fork stem cells each span the three T columns of their model; the weight row is empty and the option figures sit under the first three model columns. A hole-punch hole at the right edge covers the last seat tube cell, and further hole-punch holes show at the right of the page.]

— Page 5 —
ISHIWATA
BMX NEW LINE TUBING
GUARANTEED BUILT WITH[?]
BMX
ISHIWATA CrMo
TRIPLE BUTTED
FULL SET MADE BY
4130[?]
石渡は、BMX (モトクロス) の基本的な走行応力の法則に沿い走行中に発生する応力に最的な肉厚分布を研究し軽量化プラス強度を実現させたニューラインバテットフレームチューブを開発致しました。
チューブセットは、従来のプレインチューブより10%～[hole]%の重量軽減を図り、強度バランスは、従来より、よい結果が得られるように時代を先取りした理想のチューブセットです。チューピングとしては多種ありますので最適なものを選択して下さい。
(EXACTUS)
Ishiwata made a study of the optimal distribution of tube thickness to meet the stress developed during use, and developed a stronger and lighter tube. This is the new line of butted tubes.
Ishiwata EX (EXACTUS) is the ideal range of tubes since they have less weight (10 – 20%), more strength and better balance than existing plain tubes.
Therefore, this range of tubes is ideal for modern requirements. This tubing is available in many sizes.
DESCRIPTION | SIZE | MATERIAL
TOP TUBE | 25.4×1.0/0.7/0.8×FREE | CRMO | TB
| 25.4×1.2/1.0/1.1×FREE | CRMO | TB
| 28.6×1.0/0.8/0.9×FREE | CRMO | TB
| 28.6×1.2/1.0/1.1×FREE | CRMO | TB
| 31.8×1.0/0.9/0.95×FREE | CRMO | TB
| 25.4×1.2/1.0/1.1×FREE | MAGNY | TB
| 28.6×1.2/1.0/0.95×FREE | MAGNY | TB
| 31.8×1.0/0.9/0.95×FREE | MAGNY | TB
DOWN TUBE | 28.6×1.0/0.9/0.95×FREE | CRMO | TB
| 28.6×1.2/1.0/1.1×FREE | CRMO | TB
| 31.8×1.0/0.9/0.95×FREE | CRMO | TB
| 28.6×1.2/1.0/1.1×FREE | MAGNY | TB
| 31.8×1.0/0.9/0.95×FREE | MAGNY | TB
SEAT TUBE | 25.4×1.2/1.0×FREE | CRMO | SB
| 25.4×1.4/1.2×FREE | CRMO | SB
| 25.4×1.2/1.0×FREE | MAGNY | SB
DESCRIPTION | SIZE | MATERIAL
HEAD TUBE | 36×1.7×FREE | CRMO | PG
B·B SHELL | 55×1.85×FREE | CRMO | PG
CHAIN STAY | 16×1.0×FREE | CRMO | PG
| 19×0.8×FREE | CRMO | PG
| 16×1.0×FREE | MAGNY | PG
SEAT STAY | 16×1.0×FREE | CRMO | PG
| 16×1.0×FREE | MAGNY | PG
FORK BLADE | 25.4×1.6/1.2×FREE | CRMO | SB
| 25.4×1.3/1.1×FREE | CRMO | SB
| 28.6×1.2/1.0×FREE | CRMO | SB
| 31.8×1.2/0.9×FREE | CRMO | SB
| 25.4×1.6×FREE | CRMO | PG
FORK STEM | 25.4×2.7/2.1×FREE | CRMO | SB
STAY END | ORIGINAL t 2.3－3.2 | CRMO
FORK END | ORIGINAL t 2.3－3.2 | CRMO
NOTE | TB=TRIPLE BUTTED | SB=SINGLE BUTTED | PG=PLAIN GAUGE

[BMX new line tubing page with a drawing of disassembled BMX frame tubes, a blue BMX Ishiwata CrMo label, Japanese and English text about the Exactus range, and two side by side tables of tube sizes and materials. The lettering of the label is partly unclear at this resolution. A hole-punch hole at the left edge covers the first characters of one Japanese line, and the table lists the left block first and the right block second.]

— Page 6 —
ISHIWATA
MTB (Mountain Bike) TUBING
GUARANTEED BUILT WITH
M.T.B.
ISHIWATA CrMo
DOUBLE BUTTED TUBES
DESCRIPTION | O/D | L MM | M.T.B-D CRMO | M.T.B-C CRMO+HT | M.T.B-V MAGNY+HT
TOP TUBE | 28.6 | 580 | 12/0.9DB | 1.2PG | 1.2PG
DOWN TUBE | 31.8 | 610 | 1.2/0.9DB | 1.2PG | 1.2PG
SEAT TUBE | 28.6 | 610 | 1.2/0.9SB | 1.2/0.9SB | 1.2PG
SEAT TUBE REINFORCE MENT | 31.8 | 80 | 1.5 | —— | ——
HEAD TUBE | 33 | 180 | 1.5 | —— | ——
CHAIN STAY | | | 28/20×430×12 WITH BENT | 28/20×430×12 WITH BENT | 22.2×1.0×430×12HT WITH BENT
SEAT STAY | 16 | 610 | 1.0 | 1.0 HT | 1.0 HT
FORK BLADE | 30.6×20/13 | 400 | 1.2PG | 1.4PG HT | 1.4PG HT
FORK STEM | 25.4 | 200 | 2.7/1.6×1mm REINFORCEMENT | 2.2/1.6 | 2.5/1.6 HT
ISHIWATA SEISAKUSHO CO., LTD.
HEAD OFFICE: 2-19-19 SHIOHAMA KAWASAKI-KU
KAWASAKI JAPAN
TEL 044-266-3934 TELEX 3842-689
FAX 81-44-266-3937
CABLE KAWAISHI

[MTB (Mountain Bike) tubing page with a drawing of disassembled frame tubes, an M.T.B. Ishiwata CrMo Double Butted Tubes label, a table for M.T.B-D, M.T.B-C and M.T.B-V, and the Ishiwata Seisakusho company logo with its head office address. Hole-punch holes show at the right edge, one of them within the table border.]