Stretching Tubulars on Unlaced Rim?
03-16-10, 11:28 AM
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Stretching Tubulars on Unlaced Rim?
Good idea or bad??
Want to pick up an extra wheel for stretching but not spend a lot in doing so. Can I stretch in a unbuilt rim?
Thanks.
Want to pick up an extra wheel for stretching but not spend a lot in doing so. Can I stretch in a unbuilt rim?
Thanks.
03-16-10, 12:03 PM
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Cool.
03-16-10, 01:14 PM
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03-16-10, 01:14 PM
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dub post
Last edited by yak; 03-16-10 at 01:24 PM.
03-16-10, 08:26 PM
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I for one had a hard time getting my tires on the rims even after both stretching lengthwise and inflating to max psi for a while. In my estimation the amount of force required would easily buckle a rim. Maybe these guys did something very different-stretched more or aged more or something.
03-16-10, 08:39 PM
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There's nothing wrong with using an unlaced rim, and certainly if you have one go ahead.
But sometimes it's hard to stretch really tight tires because as you really work them the unsupported rim doesn't "push back" the way a built wheel does. Odds are you've got no longer front wheels, or unusable rear wheels kicking around, so you might as well put one of those to work as your stretching rack.
But sometimes it's hard to stretch really tight tires because as you really work them the unsupported rim doesn't "push back" the way a built wheel does. Odds are you've got no longer front wheels, or unusable rear wheels kicking around, so you might as well put one of those to work as your stretching rack.
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03-17-10, 08:07 AM
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Hmm, makes sense that it might not fully stretch the tire since the rim isn't fully supported.
I'll try BikeWise1's recommendation of using a clincher to stretch. Have a bunch of those wheels hanging around.
I'll try BikeWise1's recommendation of using a clincher to stretch. Have a bunch of those wheels hanging around.
03-17-10, 08:20 AM
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^One point: I think that what FBinNY meant was that an unlaced rim can be a bit flexy when you're straining to get the tubular onto it.
A rim has the same circumference, whether laced or not, and would stretch a tire to the exact same degree.
But a clincher rim sounds fine too.
A rim has the same circumference, whether laced or not, and would stretch a tire to the exact same degree.
But a clincher rim sounds fine too.
03-17-10, 08:50 AM
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Exactly, thanks
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03-17-10, 08:54 AM
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Darn. I've got a set of very special wheels in 630 mm with unhooked rims, I was hoping to be able to use 700C tubulars on those to be able to get the pressure up. But if a 622 clincher is a decent fit I suspect that the stretch will be too much.
