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Technical & Reference Section => Tech and Restoration => Topic started by: djruffkut on November 16, 2009, 11:32 PM

Title: chainring/crank help!
Post by: djruffkut on November 16, 2009, 11:32 PM

i need to run a profile chainring (which for some reason is 26mm?) on a hollowbite (22mm) where can i find an adapter? i've looked everywhere!!!!!!

Title: Re: chainring/crank help!
Post by: HEYWOOD BMX on November 16, 2009, 11:55 PM

 Just measured my Profile Imperial and Vernier caliper says 22.2mm.Is your measurement accurate? Profile sprockets should just fit onto a Primo axle without a tophat washer.
 

Title: Re: chainring/crank help!
Post by: djruffkut on November 17, 2009, 12:16 AM

yeah the measurement is accurate, i think it had been bored out for another crank many years ago but i don't remember!

Title: Re: chainring/crank help!
Post by: HEYWOOD BMX on November 17, 2009, 04:08 PM

 :) Sounds like it has been bored out.Biggest tophat I can find anywhere is 23.8mm.

Title: Re: chainring/crank help!
Post by: djruffkut on November 17, 2009, 06:26 PM

think i'm gonna have to get one made or just fuk off the chainring all together! can you still buy profile imperial billet rings? thanks for your help :)

Title: Re: chainring/crank help!
Post by: HEYWOOD BMX on November 17, 2009, 09:16 PM

 :) Not seen new Billet rings for yonks,E-gay or here are your best bets.Try this place,they might have a tophat that fits as they did a crank with a 25mm axle (Ultimate Hardware Sherman) a few years back.

 http://www.bmxcity.co.uk/