Thread: Brompton 3 to 6 Speed Conversion
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Old 05-12-14 | 11:36 PM
  #23  
wilfried
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Joined: Aug 2012
Posts: 619
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From: The Big City

Bikes: Brompton M3L, Tern Verge P20, Citi Bike

Originally Posted by fietsbob
Just normal tempered steel cogs would be fine To My Pragmatic mind .. rather than Titanium ..

but Bike bling /weight weenieists are more willing to put the $350 out for Ti.
Right. And how do you replace the cogs when they're worn, and how much will that cost? And you have to have a six speed setup already.

Originally Posted by dynaryder
Might want to look into a 5 speed:
Free Shipping 16 x1 3 8" 349 Light Weight Silver 5 Speed Rear Wheel Brompton | eBay

Parts swap is something you could do yourself,you'd just want to hit up a local co-op/bike kitchen to get the wheel properly tensioned first. You'd also still have your stock 3spd setup,which you could put on eBay/CL and sell to bring the cost down further.
This is intriguing. I'm not very hand with bike wrenching, but I'm learning. I do have access to a helpful friend, and a bike coop, and I know in theory how to tension and true a wheel. How hard would this be to install? It says it takes 32-349 tires. The Schwalbe Marathon I have now is 37-349 (but the Schwalbe website says 35-349? What gives?). Will it fit? I'm a little leery of this non-standard configuration, but maybe I shouldn't be. Is there a downside?
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