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Old 05-07-2007, 07:05 AM
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Q: Door Glass Channels Problem

I'm wondering if anyone has a solution to this problem I've noticed with my door glass channels:



The cloth wrapping obviously shrinks and creates a problem in the corner where the cloth pulls away from the channel.
Nice, huh?

I would think everyone using a similar product has this same problem -- yes?

I bought these channels from Chevy Duty around 4 years ago and they've probably been like this for the past year or two. I'll be installing new ones when my truck gets back from paint later this Summer and I thought I'd better figure something out for the next pair.

Is there a better manufacturer of these? Or is there something to treat the cloth with to keep it from shrinking?

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Old 05-07-2007, 08:27 AM
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try!

i have seen this before,on my cars and trucks as well,but i think if you get a diffrent brand or talk to the local glass shop or hot rod shop they might find a diffrent brand to work with. this brand is (not working at all),.....bourne51
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Old 05-07-2007, 10:25 AM
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Thanks. I'll be checking around, for sure. My truck won't be back from paint until August ... so I have until then.

PS - Here's a catalog picture of this part:


Last edited by horvath; 05-07-2007 at 01:36 PM.
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Old 05-07-2007, 01:34 PM
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Check this out: I just heard from Classic Parts (the sellers of this product) -- kudos to them for such a prompt reply!

Here's what they said:
If they aren't installed correctly they will do that. When installing them they need to be bent with the metal spine so they don't split.

what I replied with is this:
I don't understand how one could *not* bend them with the metal spine, as must be done during the install. Is there something I'm missing?

Does anyone know what he's getting at???

I mean, you have to bend the metal spine to make the curve at the top of the window ... how can someone bend the metal spine without bending everything else, too? Is he giving me some double-talk here, or what?
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Old 05-07-2007, 04:15 PM
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Another Update: Hmmm ...

More Info from Classic Parts:
Sometimes when people bend them, the back of the channel where the cloth is attached will come apart and split and after time will eventually split like yours. When attaching them some people use extra weather-stripping adhesive in the corner for that reason.
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Old 05-07-2007, 08:04 PM
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A thought would be getting the material wet before bending . This will allow it to stretch a bit more then dry . This should give the cloth more fexibility Let it dry before installing with glue .
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Old 05-07-2007, 09:52 PM
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I have been bending that stuff for years and never had that problem. I installed over 200 sets of those in the 34 coupe bodies we built at PoliForm and have never had a failure like that. We started using it in 86.
I usually cut a piece of 1/4" plywood into the curve I want, fit the glass run channel over it and bend it. Sometimes on a tight bend if the legs of the U bend out, I'll beat it a little with a mallet while the plywood form is still inside. That will smooth the edges some..

The stuff I use comes from either CR Lawrence, or Sommer and Maca. I think Soffseal has some of that also.

Getting it wet should have no effect. It's weatherstrip and is waterproof.

Hope this helps,
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Old 05-08-2007, 04:22 AM
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Thanks, Mikey. I'll look for those manufacturers.

It could just be that I got a bad set ...
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