ScottCM Posted March 19, 2014 Share Hi guys Search skills didn't find anything on here about this so i hope it hasn't been discussed before, if so , sorry. I am running a 172.5mm crank length on my bike, I am suffering from knee pain lately and i am wondering if it has to do with my crank arms. My in-seam is roughly 882mm. Now i must admit i haven't gone for an ErgoFit fitment or anything like that before. I do want to go to one just dont know which one as Cajee in princess crossing is charging R400 and Cyclefit R750 or so. All i know is that Aaron Brown runs the CycleFit one, apart from that no idea in the differences between them. My Web search has conflicting info about my crank length, some say 172.5mm is fine other sites say cause its for my MTB it needs to be 175mm and even one suggests it must be 180mm. As both are pretty expensive i dont know which to do first, and if it is replace crank to what length. Any and all advice from you experts will be greatly appreciated. ThanksScott Link to comment Share on other sites More sharing options...
openmind Posted March 19, 2014 Share The last word on crank length: https://www.stevehoggbikefitting.com/bikefit/2011/06/crank-length-which-one/ FWIW, I'm 94cm inseam and use 180mm cranks on all my bikes. Link to comment Share on other sites More sharing options...
Plentipotential Posted March 19, 2014 Share FWIW I went to Aaron Brown and was very happy with the service. I am 1.95 tall, no idea on the leg length but went to 175 mm cranks on a Giant Trance. Happy with the cranks but the feet do catch the ground every now and again as the BB on the trance sits quite low so that may be a consideration in your case. Link to comment Share on other sites More sharing options...
ScottCM Posted March 19, 2014 Share Would it have made a difference if you went to him before changing the cranks, or would it have been better afterwards, i dont know exactly how the whole process works Link to comment Share on other sites More sharing options...
Tjokkits Posted March 19, 2014 Share What you cant to is to goto cajees for a set up! Link to comment Share on other sites More sharing options...
David Marshall Posted March 19, 2014 Share I doubt that the small differences in crank length will cause knee pain. More likely to be cleat position or seatpost height. Go to Cyclefit or another reputable fitter. Spoke101 1 Link to comment Share on other sites More sharing options...
semisub Posted March 19, 2014 Share I had knee pain recently and it was as a result of incorrect saddle position. I had Ergofit setup done. Knee pain has disappeared. BTW, I am 1.90m tall and use 1.75mm crank but I don't think this has anything to do with the knee pains as I have been riding with these cranks for years. Link to comment Share on other sites More sharing options...
SwissVan Posted March 19, 2014 Share Hi guys Search skills didn't find anything on here about this so i hope it hasn't been discussed before, if so , sorry. I am running a 172.5mm crank length on my bike, I am suffering from knee pain lately and i am wondering if it has to do with my crank arms. My in-seam is roughly 882mm. Now i must admit i haven't gone for an ErgoFit fitment or anything like that before. I do want to go to one just dont know which one as Cajee in princess crossing is charging R400 and Cyclefit R750 or so. All i know is that Aaron Brown runs the CycleFit one, apart from that no idea in the differences between them. My Web search has conflicting info about my crank length, some say 172.5mm is fine other sites say cause its for my MTB it needs to be 175mm and even one suggests it must be 180mm. As both are pretty expensive i dont know which to do first, and if it is replace crank to what length. Any and all advice from you experts will be greatly appreciated. ThanksScott Crank length? What makes you think its crank length... Knee pain on one leg only or both? Where is the pain Have a look here http://www.stevehoggbikefitting.com/bikefit/2011/11/knee-pain/ Link to comment Share on other sites More sharing options...
ScottCM Posted March 19, 2014 Share I had knee pain recently and it was as a result of incorrect saddle position. I had Ergofit setup done. Knee pain has disappeared. BTW, I am 1.90m tall and use 1.75mm crank but I don't think this has anything to do with the knee pains as I have been riding with these cranks for years. I am 1.89m tall Link to comment Share on other sites More sharing options...
'Dale Posted April 4, 2014 Share Saddle too far back?Saddle too low?Cadence too low too often? Crank length very unlikely to create knee pain. Go for that bike fitment session. Well worth it. Spoke101 1 Link to comment Share on other sites More sharing options...
ScottCM Posted April 7, 2014 Share Saddle too far back?Saddle too low?Cadence too low too often? Crank length very unlikely to create knee pain. Go for that bike fitment session. Well worth it. Thanks i have booked and paid for a session at CycleFit on the 27th April. Link to comment Share on other sites More sharing options...
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