Help!! Cranks!!!
#5
sheldon only has bulletproofs in 140 and 150, no 145's
not sure if bulletproof even make 145's
here are some 145's for your midgetbike
https://aebike.com/page.cfm?action=de...=30&SKU=CR5025
not sure if bulletproof even make 145's
here are some 145's for your midgetbike
https://aebike.com/page.cfm?action=de...=30&SKU=CR5025
#7
Geek Extraordinaire
Joined: Feb 2006
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From: Long Beach, CA
Bikes: Bianchi Advantage Fixed Conversion; Specialized Stumpjumper FS Hardtail
Thats a crazy amount of overlap, but 145s will make your pedal stroke pretty weak. You'll lose about 15% of your power (assuming you have 170mm cranks now)
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#8
Senior Member
Joined: Dec 2005
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hehehe... u r trying to find a solution to something that virtually do not have a solution, because it is that way. Looks like your frame it is quite small, I would say 52? maybe smaller? More over u are using large clips that makes the situation even worse.
Sincerelly U r trying to find the answer to something that will be like that ever, I know of a guy that can cut the cranks for u if u want to, but u'll end with a set of cranks too shorts for u... Small frames have that problem and if u have a feet size 13 there is no way u know...
Let me tell u this... In track bikes (have no clue what bike do u have) from 49 throught out to 56/55 all the bikes have problem with overlaping. My advice? do not spend money in stuff, and learn to ride like that, isnt hard at all u have to sync your pedaling and the driving, thats all... as a patch solution u can cut your feets just in the midlle u know, that would work...
good luck
Sincerelly U r trying to find the answer to something that will be like that ever, I know of a guy that can cut the cranks for u if u want to, but u'll end with a set of cranks too shorts for u... Small frames have that problem and if u have a feet size 13 there is no way u know...
Let me tell u this... In track bikes (have no clue what bike do u have) from 49 throught out to 56/55 all the bikes have problem with overlaping. My advice? do not spend money in stuff, and learn to ride like that, isnt hard at all u have to sync your pedaling and the driving, thats all... as a patch solution u can cut your feets just in the midlle u know, that would work...
good luck
#10
don't pedal backwards...
Joined: Jul 2005
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From: Minneapolis
Bikes: Surly Long Haul Trucker set up for commuting and loaded touring, old Sekine road frame converted to fixed-gear, various beaters and weird bikes, waiting on the frame for my Surly Big Dummy build
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Start with some 67.5mm cranks with the right shaped end and Mark should be able to shorten them to 145 for you. I know him personally and he is an excellent craftsman.
Start with some 67.5mm cranks with the right shaped end and Mark should be able to shorten them to 145 for you. I know him personally and he is an excellent craftsman.
#11
Originally Posted by sivat
Thats a crazy amount of overlap, but 145s will make your pedal stroke pretty weak. You'll lose about 15% of your power (assuming you have 170mm cranks now)
#12
Originally Posted by vomitron
Says who? Some sources would disagree with you. Lennard Zinn (who is 6'6" and sort of an expert on bikes for tall people) ended up outputting the most power with a 150mm crank. Who knows, at the lower cadences of street riding, a really short crank might end up being perfect.
which, if true, kinda makes those results pretty useless






