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Old 05-26-21, 02:03 AM
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Join Date: Aug 2014
Location: UK
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Bikes: Dahon Jetstream p8, customized Dahon Helios P18, customized Dahon Smooth Hound P9 & Plant X Free Ranger (modded of course)

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Mine came with 42T and it was OK on Tarmac but of off road hill, it was not great. I tried 40T and it was better but the difference was not significant so I move to 38T which is good I only got stuck once on a 15% Mtb trial (muddy wet rocky...). It did not bother me much, getting stuck and forced to push 50m over a 80km MTB ride, I can leave with that... but I know that I would had done in with a 34 or 36 as I get through it in dry conditions.
I had to change my chain was the supplier sent a chain which was 1 linkset too short as the a 36T chainring is cheaper than another chain I fitted a 36T ring.
Compared to a 42T, the 36T x 10-42T is equivalent to 42T x 12-49T. As I very rarely use le 10T, I figured out that if I loose the bearly used hardest gear (42x10T) to get something like a a eagle (42x50T) cog, it is beneficial for me.
Fentuz is offline