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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 06-30-11, 10:09 AM   #1
yummygooey
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IRO hub/rim measurements

Does anyone know the measurements for IRO Premier hubs and IRO Cold Fusion rims to determine sp0k length?
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Old 06-30-11, 10:13 AM   #2
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ERD is 591

Front:
hub flange diameter - 37.5mm
Width from center - 34.5mm

Back:
hfd - 42mm
wfc - 31mm

when i measured them myself on coldfusions, the numbers i got for spoke length were
front - 289.6 mm
back - 288.5 mm
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Old 06-30-11, 10:17 AM   #3
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Cool, thanks. I was going to use a spoke length calculator for radial front/2 cross rear. What lacing did you calculate for?
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Old 06-30-11, 11:18 AM   #4
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Also, the IRO published info is at the bottom of this PDF:

http://www.irocycle.com/frame_specifications.pdf
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Old 06-30-11, 11:54 AM   #5
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Originally Posted by yummygooey View Post
Cool, thanks. I was going to use a spoke length calculator for radial front/2 cross rear. What lacing did you calculate for?
289mm is for 3-cross front and rear. I bought a couple boxes of 100 because I can use the same length spoke all around on my IRO builds.
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Old 06-30-11, 11:08 PM   #6
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i was thinking of buying some of their hubs and rims since my current wheelset is pretty beat. thanks for the spoke info!
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Old 07-01-11, 11:18 AM   #7
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289mm is for 3-cross front and rear. I bought a couple boxes of 100 because I can use the same length spoke all around on my IRO builds.
right
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