Crank size ??

[Evo-R]

Hi all

 

What is the correct crank size that i should use? 172.5 ; 175 ; 177.5 ?

 

Im 1.76m tall and ride a medium size frame.

 

Regards

[AndreZA]

YOu also get 170mm and 180. 172.5 should be fine.

 

 

[Cyclewizz]

I agree with Mampara, go for a 172.5mm

[gummibear]

I am 1,76 and ride a 54cm top tube and 172.5 cranks.I have tried 175 but it never felt right for me.

[The_Break]

This is a question that has still never been equated to give an answer.

Personally, I am 179 tall but my legs are slightly shorter for the leg torso ratio than an average rider. I have tried 172.5, 175 and 177.5 cranks for many months each. Here is what I found:

 

172.5 - Felt fine as these are what are normally fitted by shops.

175 - I felt that these cranks helped me to climb a little better seated than the 172.5 and this makes sense due to the longer crank arm and generally lower cadences.

177.5 - These are awesome for time trialing and climbing seat, however I found that when I really need to take the cadence up over 100-110 it was a bit too long.

 

I also road 177.5 on my racing bike with the 175 on my other bike of which I road equally. The 175 just felt better.

 

My advice, go for 175 for your height as you will climb better and will have slightly more power on the flats too and they are not so long you will spin out.

 

Have a friend who is 174cm and he also rides 175mm. We are both A bunch riders in all the big races.

[Evo-R]

This is a question that has still never been equated to give an answer.

Personally' date=' I am 179 tall but my legs are slightly shorter for the leg torso ratio than an average rider. I have tried 172.5, 175 and 177.5 cranks for many months each. Here is what I found:

 

172.5 - Felt fine as these are what are normally fitted by shops.

175 - I felt that these cranks helped me to climb a little better seated than the 172.5 and this makes sense due to the longer crank arm and generally lower cadences.

177.5 - These are awesome for time trialing and climbing seat, however I found that when I really need to take the cadence up over 100-110 it was a bit too long.

 

I also road 177.5 on my racing bike with the 175 on my other bike of which I road equally. The 175 just felt better.

 

My advice, go for 175 for your height as you will climb better and will have slightly more power on the flats too and they are not so long you will spin out.

 

Have a friend who is 174cm and he also rides 175mm. We are both A bunch riders in all the big races.

[/quote']

 

Thank you for the info!!!! Ill go for the 175 then

[Daxiet]

I vote 172.5 - I am ~1.75m short and ride a medium RC3000 with 172.5 cranks.

 

However in pure theory you should have more power and less speed from a longer crank. On MTB I feel more at home with 175mm.

 

 

[mountain_lion]

I am 1.7m short also with shorter legs and consider myself a "fun rider".

On the road I use 172.5mm cranks.

For real riding (MTB ) I use 175mm cranks.