Yet Another Cycling Forum
General Category => Freewheeling => Velo Fixe => Topic started by: guidon on 04 April, 2019, 07:24:06 pm
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I have bought on of these with the idea of building up a rear wheel, double fixed. My problem is this - it was supplied without lockrings. So does anyone know what thread they are and where I can get some?? They are not the same size as Miche.... (king of dodgy purchases me...) Many thanks!
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Why should they be dodgy? Amongst others they're used by Spa Cycles who offer custom builds with them.
At a guess if anyone knows the lockring thread size it will be the guys at Spa...
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John I wasn't implying that the hub is dodgy, merely my lust for end of line bargains!....Will try Spa if Ian H doesn't add his opinion, Surly do lockrings which should fit but I'm not sure....
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I have bought on of these with the idea of building up a rear wheel, double fixed. My problem is this - it was supplied without lockrings. So does anyone know what thread they are and where I can get some?? They are not the same size as Miche.... (king of dodgy purchases me...) Many thanks!
Miche lockrings aren't ISO (1.29" x 24 tpi) threaded, they're the same as Campy and Phil Wood (33.6 x 24TPI)
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I've not used lockrings for years — it's quite hard to unscrew a cog after you've ridden up a couple of hills, unless you're really into skid stops and enjoy replacing tyres.
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Thus Miche and Campy must be italian threaded, it is very unlikely that System ex will be french(!) thus must be ISO..... will double check...Many thanks all!
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Thus Miche and Campy must be italian threaded, it is very unlikely that System ex will be french(!) thus must be ISO..... will double check...Many thanks all!
PM sent!
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System EX/Formula etc are ISO. Only Campag, Miche and Phil Wood use the Italian size that I know of.
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I've not used lockrings for years — it's quite hard to unscrew a cog after you've ridden up a couple of hills, unless you're really into skid stops and enjoy replacing tyres.
I was the same until I unspooled my commuter's rear cog on the first descent from my house one morning last month, and I haven't touched that wheel in years.
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If you put a sprocket on with a 2 foot chainwhip, you're using about 5-6x the torque that your legs can apply through the cranks and the gearing. However, if you ride a CTT time trial on a fixie and only have a front brake, you are required to have a lockring.
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My chainwhips have 300mm handles and many chainwhips have somewhat shorter handles.
A cold Al hub will contract more than a steel cog, so it becomes easier to get the cog off, which might explain Ivan's experience.
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You need to make your own chainwhip! The ideal length is the diameter of a 700c wheel, plus a hand's width. All you need is a piece of flat steel bar, a drill, a hammer and punch, and some bits of 1/8" chain. I wrapped bar tape around the handle end.
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Indeed "british" thread - many thanks to Mzjo for his kind donation of vintage bits. Have'nt bothered with the lockring as it wouldn't screw on the hub so after constructing a "Zilla" chainwhip will doubt that it will ever come loose!!!! Have now fettled forks so that I have at least a front brake as its a little sketchy round here brakeless (motons abound!!!)....Looking forward to getting a few rides in....