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Old 09-02-08, 01:10 PM   #1
Stickney
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Ultegra Hub Specs

I am assembling parts for my first wheel build. I have a couple of questions about Ultegra 6600 hub specifications. I found the below on the Shimano site, but just wanted to verify these:

Rear Hub:
Flange diameter 38
Center to flange right 35.8
Center to flange left 35.8

Rear Hub:
Flange diameter 45
Center to flange right 20.8
Center to flange left 38.4

Can anyone confirm those? And are the spoke holes 2.4, 2.5 or 2.6 mm?

Thanks
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Old 09-02-08, 06:37 PM   #2
HillRider 
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If the data came off of Shimano's web site, I have to believe they are correct. Damon Rinard's Spocalc spreadsheet doesn't list the 10-speed ultegra hub but gives the spoke hole diameter as 2.4 mm for the Dura Ace (7800) hub while DT's spoke calculator says 2.6 mm for the same hub. ?????

I'd call Shimano America for the real info. Here is the phone number: Shimano American Corp.
(949) 951-5003. They are in California so make allowences for the time zone when you call.
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Old 09-03-08, 08:04 AM   #3
Stickney
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Thanks HillRider --

I thought this would be a simple question, but you have verified to me that perhaps it isn't, haha. I will call them and take my own measurements. I found competing info on various spoke calcs as well, hence why I asked.

Thanks for the confirmation and phone number.
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