170mm cranks for 5ft 10.5inch rider?
Moderator: robbosmans
Funny thing is, I won't notice a 2.5mm change in saddle height but I do notice a 2.5mm change in crank length. I think this is because a 2.5mm change is really a 5.0mm change since the crank rotates around the axle. The crank is longer at both the 12 o'clock and 6 o'clock positions.
Go for the 170mm. You will like it.
Go for the 170mm. You will like it.
Shrike wrote:Also have a 31inch inseam. Industry standard seems to be 172.5mm, but would like to try 170mm.
http://bikedynamics.co.uk/FitGuidecranks.htm
Seems most recommendations are a bit shorter than industry standard.
Also apologies for question spam recently
any rider of any height can rider which ever crank length but you will have to adjust saddle height.
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I have the same inseam and I use 170 when I upgraded my crank to Ultegra 6800. I definitely did notice a difference for the better. My cadence increased slightly but it's hard to empirically prove that. I can climb out of the saddle a lot longer with the shorter cranks and if I were to do it again I'd go for 165mm but I'm stuck for the time being since I got a stages crank arm power meter.
I need more money.
none of which make the slightest difference to the circle to which your foot has to pass through. Crank length does.stormur wrote:Is thickness of all road shoes equal ? Or can vary even 3-4mm ? insole thickness ? Sock ? Pedal stack ?
they'll also need to have their knees operated on eventually.Allen254 wrote:any rider of any height can rider which ever crank length but you will have to adjust saddle height.
I am 5'11" tall. I use 175 cranks on my seven geared road bikes. 172.5 and 170 on my two single speed bikes. Mainly because those are the cranks I had in the spare parts box when I built the single speeds. Never notice any difference when riding geared and single speed bikes on back to back days. I can spin 90 rpm comfortably all day long on any crank length.
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I'm 5'11" (33 inseam and UK size 12 feet!) and moved to 170 cranks after riding 165's on track.
I can feel the difference but I doubt that there is a measurable performance difference. I'd imagine the only difference in reality is the reduced likelihood of pedal strike when riding through a tight corner.
I can feel the difference but I doubt that there is a measurable performance difference. I'd imagine the only difference in reality is the reduced likelihood of pedal strike when riding through a tight corner.
RedCoke wrote:I think inseam is more impoart factor than height only.
inseam(mm) x 0.216?
That number doesn't seem correct. A factor of 0.216 would have me on a 190 mm crank. I am 6 feet (183 cm) with average proportions. I am happy with anything up to 175 mm. I prefer 170 mm due to past knee injuries, and spinal injuries.
wheelsONfire wrote: When we ride disc brakes the whole deal of braking is just like a leaving a fart. It happens and then it's over. Nothing planned and nothing to get nervous for.
mattr wrote:none of which make the slightest difference to the circle to which your foot has to pass through. Crank length does.stormur wrote:Is thickness of all road shoes equal ? Or can vary even 3-4mm ? insole thickness ? Sock ? Pedal stack ?they'll also need to have their knees operated on eventually.Allen254 wrote:any rider of any height can rider which ever crank length but you will have to adjust saddle height.
Mr.Gib wrote:RedCoke wrote:I think inseam is more impoart factor than height only.
inseam(mm) x 0.216?
That number doesn't seem correct. A factor of 0.216 would have me on a 190 mm crank. I am 6 feet (183 cm) with average proportions. I am happy with anything up to 175 mm. I prefer 170 mm due to past knee injuries, and spinal injuries.
It is "inseam(mm)" not height. Please check this.
http://www.stevehoggbikefitting.com/bik ... which-one/
Visit starbike.com Online Retailer for HighEnd cycling components
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Also, this site would be helpful.
http://www.peterwhitecycles.com/
http://www.peterwhitecycles.com/