Help the un-educated gear ratio

[Richard29]

please can some one give me advice,

 

im a mtb who has built up a road bike to do the 94.7,

 

i have a compact crank on the front 50-34 what selection shall i put on the back? i have a 11-30 i think, but i spin to much and its kaaaak, what rear cassette shall i put on 11-24,11-25?

 

provided this gets me through the 94.7 comfortably,

[Supersix EVO]

11-25 should be perfect.

[Cippo]

12-27 you struggle on the climbs a bit.

[Richard29]

_{yeah , i do a bit, but id rather struggle on climbs and force myself to get stronger than spin wayyyy to much and the other guys ride away like im standing still on the flats}

[davetapson]

If you're spinning out, the problem is the 11 on the back. Changing anything else cassette wise ain't gonna improve that - they best you can get is 11.

 

You need a bigger big chain ring on the front.

Edited November 5, 2012 by davetapson

[RockCoach]

Why do you spin too much? just change to a heavier gear.

 

An 11-25 will give you a nice close spread of ratios and the 34-25 as your easiest ratio should be all you need for the hills.

[Bianchi]

With a compact crank you just need to learn to up your cadence, but as a mtb rider you shouldn't have an issue with that.

11-30 is way too big.

11-24/25, not much of a difference if you put it on a 34 small chainring, so you can use either.

[Wyatt Earp]

Get the leg speed up.

That gear is plenty big to get you going and sucking wheel.

[Richard29]

yeaahhh i dont have a problem with spinning to much, but id rather not and look half decent pedalling and not trapping it like a mad thing and going no where slowly hahahaha..... cause i watched the guys around me at suikerbos, they pull away nicely but then again they know their bikes and gears im still trying to get the hang of it, which i scheme is a bit late as 94. is around the corner

[TiBones]

Try get a 52 or 53 big blade. You can do nothing with the back. Also, what Dangle said. You can learn to increase your cadence

[Wyatt Earp]

Try get a 52 or 53 big blade. You can do nothing with the back. Also, what Dangle said. You can learn to increase your cadence

 

I somehow don't think that a 52 or 53 will fit.

The BCD will be different.

[RockCoach]

A 50-11 ratio at at cadence of 100rpm should give you a road speed of around 56km/h (if my maths is correct). So just practice getting into a rhythm at that sort of cadence. I can sit comfortably at 120 to 130rpm but it takes practise.

Edited November 5, 2012 by slick

[Richard29]

it definately does take practice, cause man after the 2nd climb at suikerbossie (the one that never ends) you really got to convince yourself and htfu to spin the rest,

[RockCoach]

If I remember that descent... I couldn't pedal much even with a 53-11 because I was doing well over 70km/h.

[Richard29]

yeahhhh some serious downhills, one wrong move on those downhills , you going in a helivac thats for sure

[Bianchi]

If I remember that descent... I couldn't pedal much even with a 53-11 because I was doing well over 70km/h.

 

Lack of cadence?

I pedaled out one of the descents in the 94.7 at just over 80 in a 53-11. But all you need to do is tuck yourself in and little pedaling is necessary.