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Technical & Reference Section => Tech and Restoration => Topic started by: mark j on December 09, 2006, 02:46 AM

Title: Does anyone know the bolt sizes to make up the hardware for flights?
Post by: mark j on December 09, 2006, 02:46 AM

I had a hardware store try it all out on a 401 flight crank a while ago a write it all out. And I've lost the paper. Does anyone know all the bits and bobs and is it all unc and can just be measured with a tape measure and some common sense? Please help!
thanks
mark

Title: Re: Does anyone know the bolt sizes to make up the hardware for flights?
Post by: stidds on December 09, 2006, 09:52 AM

Go to www.customriders.com they stock flight crank spares i.e. washers, dome bolts, pinch bolts etc.  Cheap too.

Title: Re: Does anyone know the bolt sizes to make up the hardware for flights?
Post by: mark j on December 09, 2006, 04:24 PM

Thanks Sean, From what I've worked out so far.....

Pinch bolts - 1/4 x 1/2 unc socket bolt
Arm retain - 3/8 x 3/4 unc button bolt
Chainring retain - 5/16 x 1/2 unc button bolt

And to replace stem bolts on a Hutch 5/16 x 1"

Went to a local hardware place yesterday and for 4 stainless bolts for the hutch stem was................£36!