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Posted by: Dave TITLE: BALLOON:   Info on Sick old bike (Kosyuya)
I just bought a rusty old Japanese bike to restore. I can~t find any information anywhere! I think it~s pretty special, with band brake, tons of cloisonne badges, etc.

I loaded some images to:
http://photobucket.com/albums/y36/bikenutz

Here~s the rundown:
Identification:
Kosyuya Works (Trademark) on head tube
KoSHUYASYoTENLTD on head tube
KRN stamped various places on frame
K (stylized inside a circle) stamped on frame and fenders

Wheels:
24" diameter, 1.65" wide, .85" inside bead (chrome)
Stamped "AKY" or "ARY" stylized inside a circle

Brakes:
Lever activated off handlebars, no cables, solid linkage via bellcranks, etc.
Front: Brake pads lift upwards, act upon inside of rim. Mechanism stamped "Special" (chrome)
Rear: Friction (band) brake inside hub. Marked "High Clars, BAND BRAKE, Special Chrome" (chrome) - maybe High Class?
Also marked with Kosyuya Works emblem and "Trademark"

Headlamp:
"Matsushiya Hyper Dyno Lamp”. No room for batteries, appears to be run off generator.
Glass is 3 1/2" diameter (missing). Reflector inside, place for a bulb.
Broken bracket on rear frame member appears to have carried a generator at one time.
Misc grounding clamps on bike with wires sticking out support this theory.

Seat:
Spring-suspended, frame only. Cantilevered support bar. Stamped "Made in Italy" underneath
Front portion oddly hinged. Will need to have leather cover custom-made.

Crank:
3-piece. Arms (L/R) clamp onto either side of crank (chrome).

Pedals:
Roughly 3 1/2" wide by 3" long in total. Standard footpeg with (2) square rubber pieces.

Handlebars:
Swept back, chrome. Metal caps on each end (screw in center). Small riveted pieces loose, probably held grips.

Front fender:
"K" badge (brass) prominent on top of front fender.
"K" (stylized inside circle) on top of front forks
(2) Japanese badges on back of front fender (no English)

Rear fender:
(1) Kosyuya Works emblem on top of rear fender
Reflector: Housing marked "LUCKY". Glass lens (broken) marked "Kimura Lens 17" and "KG" over elongated "W"
Glass is 2 1/2" diameter, with 2" visible (remainder under housing flange)

by: 63.110.101.254
Posted by Dave
Thanks Sam. I found the site, but what I need is a "contact" in Asia. I~m sure there are folks in Japan just as passionate about old bikes as we are. Any suggestions?
by: 66.27.22.227
Posted by sam
Somewhere on the web is a Japan Bicycle History site.They may be of help.These are very well made rod brake bikes--they tend to be a little on the small side (24").I think the rear brake has a replaceable leather band.---sam
by: 69.151.98.53

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