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Did you do back to back testing with 24mm and 30mm spindle chainsets then? Struggling at present to see how the spindle diameter could affect anything other than crank stiffness, and even then not any appreciable degree.
Brommers-
30mm spindles are 17.5% more rad
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not any appreciable degree.
Since we're comparing 24mm steel with 30mm aluminium, there's about 20% difference in torsional and bending stiffness for the same length spindle with the same ratio of OD to wall thickness. I leave it as an exercise for the reader to decide which is stiffer :)
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Well yes and no. I switched from a 110bcd 105 crankset to a 110bcd praxis works crankset. So yes it was the only thing I changed, didn't expect any change, got loads of it.
But I have to say, praxis works is known for their stiffness, so maybe not the most fair comparison with a 105 crankset.
Howard
gbj_tester
Jaap
Responsiveness of the bike/rear end increased a lot. This was on a Specialized AWOL with huge S-shaped chainstays.