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Q Factor - Help!!

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Q Factor - Help!!

Old 08-09-11, 07:58 AM
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Q Factor - Help!!

I have just been offered a good deal on a Synapse Carbon 5 but on leaving the shop I realised that the Q factor may not be the same as my other bike which has dura ace cranks on a 68mm BB

Can anyone tell me the difference in Q between Dura Ace cranks on a 68mm BB compared with the FSA Gossamer Pro BB30 on a synapse?

I can honestly tell the difference between a few mm due to an old injury I am super sensitive to it and have spent years getting comfortable in my current position if its 1mm I can make it up with washers but I cant ignor it so any more than that I need to think up a solution quick.

I have all the speedplay spindle lengths in the tool box and extra washers and knee savers if it comes to it I just need to know what the difference is as there are certain measurements that impossible to achieve without moving the cleats - i dont want to do that ever time i switch bikes!

thanks for your help
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Old 08-09-11, 08:20 AM
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Originally Posted by lazerzxr
I have all the speedplay spindle lengths in the tool box and extra washers and knee savers if it comes to it
Geez, well at least you're certainly prepared for whatever the answer turns out to be!
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Old 08-09-11, 08:25 AM
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Originally Posted by Bob Ross
Geez, well at least you're certainly prepared for whatever the answer turns out to be!
lol, long time testing!!!
Actually when I wrote that it occurred to me that I might have it covered anyway!

Looks like the FSA Q is 144 from their web site but I dont know the shimano and its not the easiest thing to measure accurately without taking one arm off and putting them both on the same way around.

Anyone know the Q of dura ace?
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