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Cannondale tandem rear hub spacing.

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Cannondale tandem rear hub spacing.

Old 10-01-11, 06:07 PM
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Cannondale tandem rear hub spacing.

I have a 96 rt 2000, I believe it has an aftermarket rear wheel because it has a White industries hub. It doesn't fit well in the frame. I believe it has a 45mm hub since it is a white hub. I'm not sure how to measure the hub. Do I include the "bearing caps" in the measurement? And what is the measurement for this bike supposed to be?
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Old 10-02-11, 10:29 AM
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Hi Walter;

What dimension are you trying to measure?

Take a look at this: https://sheldonbrown.com/rinard/spoca...asureHubAndRim

To determine the hub OLD the frame is supposed to have; remove the wheel, and measure the inside gap. Most frames are within a couple percent of the intended OLD; and most frame can be deformed a little bit. For example, most frames intended for a 140mm OLD hub, will have no issues with a 135mm or 145mm OLD hub. Steel is a lot more forgiving that aluminum on this.
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Old 10-02-11, 03:56 PM
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In looking at the specs in the '96 catalog (https://66.147.244.179/%7evintagm8/year/1996/1996.pdf), you're right about it being a replacement hub. They list a CODA rear hub with threads for a drag brake. Our 2001 RT1000 came with a 145 mm dropout for the Shimano XT tandem hub with threads. As the '96 is spec'd with an 8-spd cog, I'm guessing it'd also be a 145.
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Old 10-03-11, 07:51 AM
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I believe its the width of the hub of the hub I'm trying to measure, I'll check it later today. I always have to spread the frame a little to get it to drop in.
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Old 10-03-11, 03:13 PM
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Ok, the wheel "dropout" measures 145mm in width, the frame however, without a wheel in it, measures 136mm. Like I said, I always have to spread the frame a little to get it to go in. I'm not sure if this is OK though, since this is an aluminum bike. And since I bought it this way, I have no idea how Cannondale designed it. I have two reasons for questioning this wheel, first, I can't get this bike to shift reliably, at the very least it seems to skip certain gears a lot. Second, I am considering buying a new set of carbon wheels for it. If this wheel IS too wide for the frame, I'll correct it when I buy the new wheel. I'm hoping some other Cannondale owner, or someone with the info will chime in and let me know.
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Old 10-03-11, 03:53 PM
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I have a 1998 Cannondale RT1000 that uses 140mm spacing. My understanding is Cannondale went to 145mm in 1999. One question--do you have a rear rack on the bike? My rack squeezes my stays together a little since it is designed for a "normal" 135mm bike, and it's a tight fit to get the 140mm hub in there while the rack is installed. If you have a rack on, it might effect your measurements, so take it off and remeasure.
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Old 10-03-11, 09:29 PM
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Thanks, I do have a rack, I hadn't thought of that. I didn't remember having ANY trouble with it the first time I put it together, but recently I had. Of course in the mean time I HAD installed a rack!
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