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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 03-12-14, 12:26 PM   #1
1nterceptor
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Single chainring swap

Just uploaded my latest video. Changed the original 44T chain ring/wheel on my folder
to a 39T Dura Ace. Probably old news to most of you; but maybe helpful to a new rider.

https://www.youtube.com/watch?v=5AT6...6zPoymgKaIoDLA
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Old 03-12-14, 02:22 PM   #2
fietsbob 
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yea, step 1 .. have only bought the bike in the last year.. so it's the new spider crank,
as the other previously , the chainring is swaged on to the crank.

I like Surly's stainless steel rings on single speed drivetrains .
not even much weight penalty in a 130-39t size
[I see measuring weight was the first highlight.]

and they can be flipped over to wear twice as long..

flat S-A hub cogs you can do that too .

Last edited by fietsbob; 03-12-14 at 02:26 PM.
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Old 03-23-14, 06:49 PM   #3
1nterceptor
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Quote:
Originally Posted by fietsbob View Post
yea, step 1 .. have only bought the bike in the last year.. so it's the new spider crank,
as the other previously , the chainring is swaged on to the crank.

I like Surly's stainless steel rings on single speed drivetrains .
not even much weight penalty in a 130-39t size
[I see measuring weight was the first highlight.]

and they can be flipped over to wear twice as long..

flat S-A hub cogs you can do that too .
Yes, this is only useful for 2013 and later B'tons.
But some folks with other folders that has a spider
crank might find this info useful. Thanks for the
info on Surly chain rings; will check them out if
they have the right BCD. And don't worry, if you
have a 2012 and earlier Brompton - I still got you
covered :

https://www.youtube.com/watch?v=hYo8...6zPoymgKaIoDLA
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