Folding Bikes - Brompton and chain width
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
06-26-11, 04:39 AM
The Brompton website states that maximum chain width is 8.6mm (for 3 speed) or something like that and therefore snap-on links are not compatible as they tend to be wider. I'm looking that the snap-on link for the PC1 Sram chain and it's 9.2mm and not quite symetrical, i.e. it projects slightly further on one of the sides.
I can't see there being a problem with chains of this size; I don't see where clearance would be too tight. . . . ? Perhaps this is due to the fact that my chainwheel is of the older 1/8 type and therefore there's less side-to-side movement of the chain. . . I don't know how the 3/32 chainwheels differ proportionally.
A snap on link would be convenient for chain cleaning.
06-27-11, 08:30 AM
The snap-on links are fine. Make sure they point to the outside/towards your leg when you are cycling. A possible tight spot is the chain tensioner where the link might rub into the plastic. You have to check and/or play around with cog/spacers combinations.
I am using the Wipermann 9speed link with the Brampton chain (3x2 speeds) and it works just fine.
I like it more than the SRAM's because it is easier to remove it without tools (from my experience the SRAM links tend to get stuck).
06-27-11, 04:12 PM
Thanks guys. I'll switch to 3/32 chains in the future but for the moment I've got some wider chains that'll last me a long time, good to know I can do that and use snap-on links.
06-27-11, 06:45 PM
I have a KMC 3/32" half link, and a chain tool. it seems to work OK,
just pulled off the chain and gave it a good soaking in kerosene , today .
the benefit of not having the chain flexed sideways, as in a derailleur setup
Is you dont have to use derailleur chains, ones with pins that set proud over the side plates
wont pull out as easily.
Powered by vBulletin® Version 4.1.12 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.