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@mdizzle
I used the search and found some things, but i need some advice from the ex/current BMXers out there.
I live in Brasil, and the availability of any kind of fixed gear/track frame is not that good, so to counter this i have collaborated with a BMX frame builder to produce a prototype frame.We used a track frame for the template, but have made it from 4130, it weighs in at 2kgs.....the only problem is that it has a mid sized bb.
This means i can only use BMX cranks, apart from the chainring pinch bolt unscrewing and the obvious weight dis-advantages, what other problems will i encounter using a BMX crankset?
As i have said this is a prototype frame, and anu ones that go into production will have a standard threaded bb, we just built with what we had available....
Thanks for any help......