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Why On Street-Trials Bikes Higher Gear Ratio?


clerictgm

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You lose that kind of 'pop' you get with a lighter gear ratio for doing static gaps and stuff, but it just takes a bit of a change to your technique. I found you just have to follow through (in a non-fecal way) the kick more when you're doing pedal kicks for gaps, sidehops and so on rather than just jabbing the pedals.

Matt's spot on about the benefits though.

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Street riders like to go faster so that they can bunnyhop further and keep flow easier when they spin, also they look doing lines with no pedalling in between, so being able to go fast at the start means you don't have to pedal during the line. Plus they can manual longer because they don't have to bitch crank like those with lighter ratio would have to.

However when doing TGS style moves they will lose stamina quicker because they are using more energy than if they had a lighter gear ratio, also they can't gap/sidehop as fast because the harder gearing lowers acceleration.

Hope this helped (badly worded)

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On a similar topic why is the smallest middleburn chainring a 20T one. I wanted 18-15 but have to make do with 20-16. I can cycle that bit faster than my mates though so not too bad.

Because they're originally MTB cranks where a 22t cog is usually the smallest. Also you can quite easily get hold of 18t or 16t cogs for Middleburns, with the company themselves producing a Ti 16t, so they've covered all bases really.

Outside of trials who would want to run anything smaller than 22t? Most MTBers run single rings anyway now so even the 22t is becoming less and less common.

When I used to run Middleburns I ran an 18t Cloud 9 set-up. 20:16 is pretty darned light though so if you want 18t look at the cloud 9.

I can't abide static moves on the whole and a light gearing to me always feels rubbish.

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