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Brompton and chain width

Old 06-26-11, 04:39 AM
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chagzuki
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Brompton and chain width

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.
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Old 06-27-11, 08:30 AM
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Carcinogent
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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.

-Carcinogent

Last edited by Carcinogent; 06-28-11 at 02:02 AM.
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Old 06-27-11, 10:36 AM
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I am using the Wipermann 9speed link with the Brampton chain (3x2 speeds) and it works just fine.

https://www.connexchain.com/Connector...ink/1_309.html

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).
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Old 06-27-11, 04:12 PM
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chagzuki
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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.
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Old 06-27-11, 06:45 PM
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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.
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