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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 09-17-10, 08:05 PM   #1
jamiejay
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DIY first timer

Hello. About a fortnight ago I started building my own single-speed. I've never built a bike before but I'm loving every second of it and I'm very excited for the finished product! I just have a couple of questions.

I picked up an old Raleigh Sirocco from ebay for £20, and I managed to pick up some drop handlebars and a seat post from Freecycle. Problem is the seat post is too small, and I need to buy a stem, but I don't know what sizes I need.

Do any of you know any tricks for measuring, or even the exact size seat post/stem I need to get hold of? From what I can find online it seems to be a 27.2mm seat post and a 22.2mm stem, but not everyone agrees.

Any other advice you might have would be welcomed!

Thanks in advance!
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Old 09-17-10, 08:22 PM   #2
rustybrown
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Easiest way? Local Bike Shop.

Second easiest way, trial and error with miscellaneous seatposts.

If you have the tool, calipers. Or tape measure and a ridiculously keen eye.

As for the stem, if its threaded, it will probably be 22.2.
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Old 09-17-10, 08:26 PM   #3
Yellowbeard
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Just take them into a hardware store and use the cheap vernier calipers from the bin.
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Old 09-18-10, 12:24 AM   #4
evilcryalotmore
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Easy way. LBS (local bike shoop) see what they have to say and dont take no for an answer
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Old 09-18-10, 10:03 AM   #5
ichitz
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it's cheap. And u'll use it all the time.
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