Bottom bracket maker ?

[dorset boy]

On a Chas Roberts from 1988,looks like SR in a circle ? Any idea's please.

 

[Guinessisgoodforyou]

Long Shen

 

[dorset boy]

Long Shen

Who makes that, sounds Chinese ?

 

[jim haseltine]

Started in Taiwan I think. Made all sorts of investment cast bits & pieces including cycle lugs etc. Worked closely with Tange who recently bought out the cycle parts of the buisness and transferred the tooling to their own factory.

 

[Guinessisgoodforyou]

What Jim said. Raleigh Randonneur uses them.

 

[Slbkr]

I have the same marking on my mystery frame. I found the below thread with more info but it actually seems a bit of a mystery…

Bottom bracket shell marking ID - Bike Forums

Classic & Vintage - Bottom bracket shell marking ID - I bought a Giordana frame several years ago. It doesnt have model decals, but it does have tubing decals on the seat tube and forks - Columbus SL. The bottom bracket shell has 58 SL stamped into it. I believe its a late 80s-early 90s frame...

www.bikeforums.net

 

[mdvineng]

VeloBase.com - View Single Frame Part

Taiwan made investment cast process of high quality. Used by many top frame builders from 87 onwards.
Now bought by Tange

Long Sheng List 台灣丹下貿易股份有限公司 TANGE International Co., Ltd.

Long Sheng List,TANGE is one of the oldest and most distinguished names in the bicycle industry. Starting with fork production in 1920, Tange has applied experience and engineering to improve bicycle technology and performance. Tange pioneered methods for butting and heat treating...

tange-design.com

 

[vcballbat]

I have been trying to solve this mystery myself as I have an 83 Raleigh SBDU 753 frame that has a seat lug with a web on the underside and have found one the same with the SR logo. I have spoken to the supplier who said they are Italian but can't remember the name.

Thread 'Lug Identification... Italian 1980's...' https://www.retrobike.co.uk/threads/lug-identification-italian-1980s-🤔.466634/

 

[Old Ned]

Long Shen were distributed by Ceeway and I have a catalogue with lots of their designs for lugs etc. A large range but, as the catalogue is 'last century', I couldn't be sure that they are all still available.

 

[Guinessisgoodforyou]

Framebuilding Bicycles. Tubing, Parts, and Tools

Bicycle Framebuilding Parts. Everything you need to Build Cycle Frames

www.ceeway.com