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-   -   Single chainring swap (http://www.bikeforums.net/folding-bikes/937902-single-chainring-swap.html)

1nterceptor 03-12-14 12:26 PM

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

fietsbob 03-12-14 02:22 PM

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 .

1nterceptor 03-23-14 06:49 PM

Quote:

Originally Posted by fietsbob (Post 16571844)
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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