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Can I put fresh glue on this rim? (Gluing tubulars)

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Can I put fresh glue on this rim? (Gluing tubulars)

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Old 12-19-10, 12:29 AM
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lukasz
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Can I put fresh glue on this rim? (Gluing tubulars)



The reddish stuff is old glue that I did not take off. The rest of it came off pretty nicely with a butter knife. I then used sandpaper and rubbing alcohol to finish. Should I go back and get these bits off as well, or can I just layer glue onto it?
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Old 12-19-10, 02:28 AM
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Looks like you did a great job cleaning up the rim if the section in your pic represents the rest of the rim.

If the above is true, then yes you can apply glue to your rim.

I would recommend 2 to 3 light coats evenly spread between the spoke holes. And 2 light coats on the base tape of the tire.

-j
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Old 12-19-10, 05:25 AM
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Have you glued or owned tubulars b4? I've seen seen, sold and glued lots of tub rims but never any that looked like this
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Old 12-19-10, 05:48 AM
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Those ridges look like a clincher to me, what make of rim is it?
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Old 12-19-10, 03:52 PM
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Originally Posted by juls View Post
Those ridges look like a clincher to me, what make of rim is it?

+1. More pictures, please!
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Old 12-19-10, 04:11 PM
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It impossible to tell depth in the photo, but you need to be sure that your rim is made for tubulars.

Hold the wheel vertically edgewise to you like a base drum and look across the top. If the outside of the rim has a concave surface kind of matching the curve of your thumb, it's for tubulars. If it's a "U" shaped channel with vertical sides (inside) that's for wired-ons and you cannot use it for tubulars, as the flanges will cut up the side walls.

If you're not sure take a photo across the top, so we can see the rim profile and confirm which it is for you.

Assuming it is a tubular rim, why did you remove all the glue? Old glue makes an excellent primer for fresh glue, so you should only have removed excess, if any, than applied fresh on top. I've been riding tubulars and mounting them with glue for 40+ years, and have never removed old glue, except for some crusty buildup at the outer edges.
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Old 12-19-10, 06:56 PM
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Originally Posted by FBinNY View Post
Assuming it is a tubular rim, why did you remove all the glue? Old glue makes an excellent primer for fresh glue, so you should only have removed excess, if any, than applied fresh on top. I've been riding tubulars and mounting them with glue for 40+ years, and have never removed old glue, except for some crusty buildup at the outer edges.
Yeah, us old farts suffer from that.
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Old 12-19-10, 07:47 PM
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That looks like a clincher rim to me. There is a picture of a tubular rim, post #20 at the end of this thread :

http://www.bikeforums.net/showthread...ir-of-tubulars

Here is a picture from an old catalogue showing the cross-sections of clincher and tubular rims :

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Old 12-19-10, 09:58 PM
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Yes kinda looks like a clincher, but if the present or previous owner did successfully glue on a tubular tire to it before, it could also be one of those "mixte" rims that can handle both clincher and tubular tires. A better pic of the rim at a different angle might answer everyones questions.

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Old 12-20-10, 02:28 PM
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Chombi, you're right. It could be a Super Champ Mixte rim. Here's a picture of it.

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Old 12-20-10, 02:35 PM
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This is not my favorite rim at all. To me it's like one size fits all clothing that fits nobody right.

The OP needs to be aware that the tire isn't supported fully around the bottom, but rests on the two narrow strips on either side. That's where the glue needs to be, since glue on the bottom where there still a bit of residue doesn't do anything.

I suggest applying two coats of glue, letting one dry completely first as a base ;layer, than mounting the tire when the 2nd coat is tacky. Be 100% sure to maintain full inflation, because the constriction of the inflated tire is what really keeps it on, and there's not much in the way of glue surface area working for you.
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Old 12-20-10, 11:27 PM
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That looks very clean, and that's appropriate given that the old, red track glue is brittle. Clean enough now!

Two layers on the rim should assure a continuous layer of glue..

For the tire, some tire's base tapes drink up the glue and require multiple layers of glue. Some tapes are almost non-absorbant and two layers would be plenty.

Tell me that's not a clincher rim!

Last edited by dddd; 12-20-10 at 11:30 PM. Reason: clarity
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