Bike Forums - View Single Post - Suntour Cyclone Mk II FD capacity

01-09-07 | 03:46 AM

#2

mrmw

Senior Member

Joined: Dec 2005

Posts: 601

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From: Atlanta

Bikes: 1982 Schwinn Super Sport S/P, 1984 Miyata 610, 1985 Panasonic LX 1000, Centurion Pro Tour 15 1983

Quote:

Originally Posted by JunkYardBike

Does anyone know the capacity of the Suntour Cyclone Mk II? On another C&V thread, I saw 18T mentioned, but looking through old Trek brochures, they seem to have been used on 50/45/28 chainring setups, a 22T difference.

I have a NOS 1983 model (they were spec on 1983 Treks) that came in a box labeled "Touring". I'm not certain the box is original to this specific FD, however.

Also, as it appears to have been used on cranksets with 52 and 50T big rings, would it be inadvisable to use a 46 as a big ring? And is a half-step granny (ala Trek) the ideal triple setup to use with this particular FD?

Here are some partial answers:
--my Mk II (touring, v.1982) came stock with a 52-46-34 setup.
--From research, the stated capacity is 18t.
--I'm running it now on a 48-38-28, 20t. It works really well.

I don't know how it would work on a 46 tooth largest chainring, but I'm curious too.

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