#1
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tricolor hubs question
these jobbers:
just to confirm: OK to run 9-speed cassettes and 130mm spaced rear - right?
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http://less-than-epic.blogspot.com/ |
#2
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I believe that the uniglide-only 64xx hubs were 126 and the dual uniglide / hyper glide hubs were 130. Should be 130. No problem with a 9V cassette.
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#3
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Quote:
i admit i dont know anything about uniglide/hyperglide! as long as a regular cassette fits, i'm good. i'm planning on a winter overhaul of these and then build them into a more classic set.
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http://less-than-epic.blogspot.com/ |
#4
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Quote:
https://www.sheldonbrown.com/k7.html Greg |
#5
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perfect, thanks greg!
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http://less-than-epic.blogspot.com/ |
#6
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Based on the information on the Shimano Manuals & Technical Documents web page (and also on Velobase), the 64xx series freehubs came in 3 varieties: FH-6400, FH-6401, and FH-6402. HB-6400 & HB-6401 came in both 126mm (7spd only) and 130mm (7spd or 8spd), while HB-6402 was only 130mm. HB-6400 was only Uniglide (7spd and 8spd), while HB-6401 and HB-6402 was Uniglide or Hyperglide*.
Since you can fit 9spd cassettes onto 8spd Hyperglide freehubs, you're unlike if it is a HB-6401 or HB-6402 130mm, but you're out of luck if it is 126mm and/or an HB-6400. *If it has internal threading for a lockring, and if one of the 9 spline grooves is wider than the others, than it is Hyperglide compatible; if it has no internal lockring threading and all the spline grooves are uniform width it is Uniglide only. |
#7
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If it's 130 spaced now, you are good. I have done an axle/cassette swap to change from 126 to 130, easy enough to do.
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#8
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looks like i'll wait to see what comes in the mail.
fortunately, i paid $15 for this set, so it's not a very big gamble.
__________________
http://less-than-epic.blogspot.com/ |
#9
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Quote:
Absent a photo of internal threading, I've also always looked for full-length splines as a sign that a hub was HG compatible. It looks like there are two types of UG-only freehubs... |
#10
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While it is cheap and easy to do an axle swap, the problem would be that if it is currently a 126mm axle, then it will have a 7spd freehub body (which won't fit 8/9/10spd cassettes).
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#11
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Op if you need the rest of the group let me know... my shifters are 8 speed tho.
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#12
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Quote:
6400 was 7 speed only, shorter freehub body, UG twisted tooth cassettes only, 126 OLD. 6401 (or 6400 1/2, as some called it) was also 7 speed only, also shorter freehub body, also 126 OLD, but accepted either 'modern' HG or older UG cassettes. It is possible to convert either of the firt two iterations to 8-9-10 speed using a longer freehub body, even with the 7speed axle. 6402 was 8 speed with a longer freehub body (note: 12 tooth is the smallest cog that will fit), so 8-9-10 speed cassette compatible, accepted either HG or UG cassettes, 130 OLD. Am not aware of any tricolor freehub that was 8 speed but only UG. DA did that, but if 640X did too, it would be pretty rare stuff. Last edited by rccardr; 01-27-2020 at 01:02 PM. |
#13
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Quote:
Greg |
#14
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Ahh, I meant freehub, not cassette. Hadn't had my coffee yet. In fact, the hub I did the surgery on is still going strong 10+ years later.
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#15
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I laced a 32/28 set of these hubs to A23s and they are flat out great. So smooth.
Looks like you snagged a 7400 skewer in there? Nice. |
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