126mm Ultegra 6600 hub & 10 speed cassette !?
03-24-23, 11:37 PM
#1
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Thread Starter
126mm Ultegra 6600 hub & 10 speed cassette !?
About 14 years ago I rebuilt a 90's era Trek 1400 using a 126mm Ultegra FH-6600 rear hub combined with a CS-6600 10 speed cassette. It all fit just perfectly within the 126mm.. I've been commuting on the bike all this time and totally love it! Recently I got the urge to build another one using the same frame (a 90's Trek 1400 with 126mm rear spacing). I want the same 10 speed rear setup- so I figured no problem- I will just patiently search for a used old Ultegra FH-6600 hub- but all the ones I keep finding are 130mm. I SWEAR they made a 126mm version that was8/9/10 Hyperglide compatible- I literally have just that on the old bike... Am I crazy, or is it just that rare? Here are pics of the 126mm one I have on the old bike..
Or maybe the hub I have is 130mm but just fits easily in the 126mm dropouts? I definitely don't have to bend out or put any outward pressure on the dropouts to fit the hub in, and the dropouts measure EXACTLY 126mm with my calipers). I'm scratching my head..
ps- I promise to clean it up
Or maybe the hub I have is 130mm but just fits easily in the 126mm dropouts? I definitely don't have to bend out or put any outward pressure on the dropouts to fit the hub in, and the dropouts measure EXACTLY 126mm with my calipers). I'm scratching my head..
ps- I promise to clean it up
Last edited by cruiserandmax; 03-25-23 at 12:02 AM.
03-25-23, 12:15 AM
#2
Really Old Senior Member
They don't show an option for other than 130mm.
However, one could remove 4mm of spacing from the NDS, shorten the axle by 4mm and redish the wheel.
This does result in a somewhat weaker wheel and even less spoke tension on the NDS.
This can be greatly alleviated by using an offset spoke bed rim.
However, one could remove 4mm of spacing from the NDS, shorten the axle by 4mm and redish the wheel.
This does result in a somewhat weaker wheel and even less spoke tension on the NDS.
This can be greatly alleviated by using an offset spoke bed rim.
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03-25-23, 12:19 AM
#3
Newbie
Thread Starter
Thanks, for that info- this is SO weird- maybe that was done on the hub I have> I bought the wheelset with that hub built on it "new" way back then.. ugh
03-25-23, 12:37 AM
#4
Really Old Senior Member
There appears to only be a 4.8mm spacer on the NDS.
Your hub appears to have that.
Either the wheel is stuffed into the drops and spreading them 4mm or you have a 130mm rear spacing.
Easily verified with a ruler.
126mm is about 4-15/16" to 5".
Your hub appears to have that.
Either the wheel is stuffed into the drops and spreading them 4mm or you have a 130mm rear spacing.
Easily verified with a ruler.
126mm is about 4-15/16" to 5".
03-25-23, 01:20 AM
#5
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Thread Starter
The spacing is definitely closer to 126mm than 130mm.. And the hub definitely drops in without applying any outward pressure at all to the dropouts... I would measure the hub between the ends of the locknuts too, but my calipers are too short with the cassette installed- but I swear that cassette I have pictured is simply "dropping" into those dropouts- though maybe they are spreading slightly when the hub seats and I'm just not feeling it? I'm going to try to find a known 130mm hub/wheel and see if it drops in the same.. it maybe all in my head.. thanks for bearing with me.
03-25-23, 01:29 AM
#6
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Thread Starter
Ok, yeah I took the rear wheel off my Wife's specialized Allez which is definitely 130mm, and it drops into the above no sweat- I guess the space is close enough to 130mm.. It's weird because I honestly don't feel like any pressure is being applied out when I drop it in... But I guess cool- I can get a 130mm hub !?
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03-25-23, 01:33 AM
#7
Really Old Senior Member
Ok, yeah I took the rear wheel off my Wife's specialized Allez which is definitely 130mm, and it drops into the above no sweat- I guess the space is close enough to 130mm.. It's weird because I honestly don't feel like any pressure is being applied out when I drop it in... But I guess cool- I can get a 130mm hub !?
03-25-23, 01:36 AM
#8
Newbie
Thread Starter
Ok- so you are completely right- I have 130mm hubs- I tried putting both wheels in my "new" trek 1400 frame and it does have to spread slightly to let the wheel drop in... So I guess the one I have been riding 14 years had the 130mm jammed in there all along and the frame has "relaxed" to that width- which makes me feel little funny since it's an aluminum frame. And so I guess that is the final question- how "bad" is it to shove a 130m hub into the 126mm dropouts on this "new" (same aliminum) frame I am building from? The 4mm or whatever of spread feels pretty minor as I push the wheel in. And I guess I've made it through 14 years of city riding with that on the other frame.. but still...?
03-25-23, 05:32 AM
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130 in 126 is not a problem. Check the C&V section, it's a well established upgrade for vintage Cannondales and others.
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03-25-23, 05:37 AM
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Late 80's early '90's Treks were commonly spaced at 128mm, as the same frame was used for different drivetrains depending on model. I've never had an issue putting a 130mm wheel in any, steel or Al
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03-25-23, 08:39 AM
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2 years ago I bought an '80s Cannondale with 7 speed 6400 hubs. I changed the freehub body to an 8/9/10, kept the 126 axle and redished. The dish ended up being exactly the same as Shimano's 11 speed hubs - so it really isn't a bike deal.
03-25-23, 10:36 AM
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Exactly. I had a 1992 Trek 1420 (my son still has it) and those frames were indeed spaced 128mm to allow 7-speed freehubs on the lower line versions and 130mm freehubs on the upscale models.
