- How far will a bike travel in 11/34 with one pedal stroke?
Pretty much spot on ^
34 x 11 on 172.5mm crank arms with a 26 x 2.25 tyre gives a gear inch of 83.4 = 6.65m for every revolution of the cranks
Not worked out in my head nor am i a gear inch bore – I used the Bike Gears app for the iPhone, pretty nifty little app that is one of the few apps i continue to use – especially in the bike shop.Posted 5 years ago
Neither can i avdave2? so here….have this award
If i mentioned Gain Ratio then i guess it would have been relevant but seeing as i didn’t?….hey ho.
The original poster did not mention what crank length he was using so as most folk either use 170mm or 175mm i thought i’d be a smart arse and use 172.5 to give a median gain ratio result but as i didn’t bother including the result in the above post i guess this entire explanation has been pretty irrelevant so far – fwiw the gain ratio is 6.15 so for every inch the pedal rotates around the bottom bracket the bike will travel 6.15″ forward.Posted 5 years ago
No bother avdave2 🙂 , i gave myself a special “there – there” pat on the head for my cock-up regarding gain ratio.
As for the 29″? :
34 x 11 on 172.5mm Crank arms running a 29 x 2.25 tyre gives a gear inch of 89.1″ = 7.11m for every revolution of the cranks with a gain ratio of 6.58Posted 5 years ago
The topic ‘How far will a bike travel in 11/34 with one pedal stroke?’ is closed to new replies.