Hi Malo, the PIR crankset is a great project.Of course you know more than the rest of us about materials and resistance, but I wonder if there's any way the "head" of the crank arm is not so bulky, so that they are aesthetically more appealing, as at least to me the look a bit disproportionate they way the are now. Again I'm only saying this in terms of aesthetics. The other thing that I want to ask you, is if you would consider using steel or titanium for smaller sprockets. The advantage that I see is that in this is that you could could further reduce the hexagonal diameter of axle in the outside part of the axle, without sacrificing strength.Anyway, I look forward to hearing your thoughts about thisprops on this work, as in any other things you have shown us. Alex
Malo, My old computer with the files etc died.Can you remind me what size bottom bracket this works with?
Malo you are the best doing this......