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 Post subject: Re: Pro flex 857
PostPosted: Wed May 22, 2013 9:11 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Mon Apr 05, 2010 8:38 am
Posts: 2679
Location: Norfolkshire
Having built several Proflex's and using Girvins the above options will work (using a combo of headsets CRC have been doing Cane Creek for bargain prices so is a cheap workable solution) However, one of my builds for a while back had 1 1/8" Frame and 1 1/8" Girvins which like you have pointed out narrows from the base of the steerer to 1" at the top section. the top part of the 1 1/8" headset had a shimmed split washer which was profiled. Insertion of this washer took up the slack between 1 1/8" and 1" with compresssion from the Stem and star fangled nut keeping it all together. The shim/split washer was approx 6mm deep. I am guessing that over time these shim/split washers ended up going missing or becoming damaged over time. I do have a spare for my 856 Flex but in all honesty go for a mix and match headset option. you can incidentally get a 1" crown race to sit on the wider 1 1/8" section on the steerer however not advisable!!!! Like i said CRC have been discounting Cane Creek headsets in both 1" and 1 1/8" flava, its a simple solution and will enable you to match your Girvins with your Flex's :D


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 Post subject: Re: Pro flex 857
PostPosted: Wed May 22, 2013 12:43 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Thu Feb 24, 2011 1:15 am
Posts: 1887
Location: Getting fitter, I will beat the Surrey Hills....
ovlov440 wrote:
...don't Hope offer a mix-n-match option ie: you can purchase the top and bottom cups/races individually?

Yes they do.

http://www.chainreactioncycles.com/Mode ... elID=70727

Doesnt look like they do 1" though :?


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 Post subject: Re: Pro flex 857
PostPosted: Sat May 25, 2013 12:08 pm 
Dirt Disciple

Joined: Wed Jan 09, 2013 9:11 pm
Posts: 43
Location: somerset, Quantocks
Thanks for all the info :D , i have purchased a couple of spaces to reduce from 1 1/8 to inch. also bought an inch and an 1 1/8 head sets. will get it all put together one night.... now thats sorted its on to tracking down some original spec gearset!


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 Post subject: Re: Pro flex 857
PostPosted: Sat May 25, 2013 10:26 pm 
Retro Guru

Joined: Tue Mar 20, 2012 6:19 pm
Posts: 499
Location: BOURNEMOUTH
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what gear are you looking for :?:


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