So, I've always wanted to try an Alfine in a Moulton frame. The parts are on their way and I take the usual precaution of having a gander on the 'net to see what people say on the subject. Blow me down if I don't see not one, but two chain tensioners, from Shimano themselves, branded Alfine and even instruction pdfs, describing how to mount them alongside the hub gear itself. The CT-S500 has two jockey wheels and is as far as I can tell, spring loaded. The CT-S510 has a single jockey wheel.
Why might I need one of these, what are the differences between the two and will I suffer if I don't fit one?
chain tensioners for Shimano Afline
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simonineaston
- Posts: 8077
- Joined: 9 May 2007, 1:06pm
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chain tensioners for Shimano Afline
S
(on the look out for Armageddon, on board a Brompton nano & ever-changing Moultons)
(on the look out for Armageddon, on board a Brompton nano & ever-changing Moultons)
Re: chain tensioners for Shimano Afline
the single pulley one is for a single chainring in a frame with vertical dropouts, and provides a small tension range to allow for chain wear. The twin pulley one is for when you are using 2x or 3x chainrings.
On a moulton with slotted dropouts and one chainring you shouldn't need either one.
The downside to using a tensioner is that there is more stuff on the bike, close to the road, to get dirty.
The plus side is that when you adjust the chain tension with a tensioner fitted, you don't need to mess with a rim brake, if that is what you have fitted; this is a bugbear with nearly every Moulton with rim brakes and no tensioner.
cheers
On a moulton with slotted dropouts and one chainring you shouldn't need either one.
The downside to using a tensioner is that there is more stuff on the bike, close to the road, to get dirty.
The plus side is that when you adjust the chain tension with a tensioner fitted, you don't need to mess with a rim brake, if that is what you have fitted; this is a bugbear with nearly every Moulton with rim brakes and no tensioner.
cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~