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Sprockets - Max maybe 18t - @Mikey5000 could do no more than 17t from memory.
You will see in this vid, this chap used 12-14-18t
https://www.youtube.com/watch?v=zttcr7nhy-0
Clips - I have no useful comment.
Sunrise looks good - you will see in the vid a friction shifter was used, and I have also seen this deployed
but best of luck finding one if you like that as it appears largely out of stock in the UK.
Arvy.-
out of interest - how do actuation ratios influence the shifter if you want it to be indexed?
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Thanks @Arvy
Ive seen a few videos and blogs about it, but I'm having trouble sourcing the necessary circlip.
Minimods/BikeGang only sell it as part of their (expensive) cog kit from China
The Brompton Man seems to be out of business (not responding to emails and Facebook page is out of action)
SJS Cycles don't have any (other than part of the MiniMods kit they sell- at twice the price of BikeGang)
BrilliantBikes don't even list any
I'm drawing a blank everywhere I look...
terlg
DirtBuddha
Guys, what is the go-to 2-to-3 speed conversion these days?
I have an S2L which is currently set up as a single speed (by the previous owner) and want to convert it to a 3-speed. I have the original derailleur, spring etc but will probably just buy a whole new set as they don't seem expensive.
I read the Sunrise M90 friction thumb shifter is a good one for a 3-spd conversion, but which cogs and circlips do people use these days?