I'm restoring a 1966 2 door Amazon. I've done quite a bit and the car is back from the paint shop looking great. I'm trying to put things back together now and I'm encountering lots of new challenges. I'm not a body work guy, so a lot of things are new to me. I had to rebuild/re-rivet the vent window frames and install new gasket sets. I was able to refit all of the door window guide channels and I figured out how to replace the fuzzy inner scrapers on the door windows, but I can't seem to get the outer scrapers to work properly. I bought 2 new outer scrapers from VP Auto Parts and cut one to the proper length and installed it in the groove (not an easy task !). The window goes up OK but when I try and roll the window down, the scraper seems to be too far up on the window and it grabs on the glass and folds under. This causes the window to become very hard to wind down to the point where I am afraid I will break the mechanism. I tried treating the rubber with silicon which worked great until the silicone dried up and then it was back to binding. It almost seems like the scrapers may be too wide (ie extend too far up the window and therefore roll over and bind up when the window is rolled down). Any ideas or suggestions would be appreciated.
johnfinn99
JF;
These are just some thoughts, but you might give some help or inspiration...
...root-cause is clearly too much adhesion between the glass and new rubber...silicon might actually make it worse in that it allows an intimate (almost vacuum seal type) contact between glass and seal... maybe (absolutely) dry would be better as it allows this contact to slip easier...I wonder also how much of an effect the contact angle has, and if this can be varied at all All that is really necessary for the seal to do its job is that edge has a good contact with glass (no more!)...so I'm thinking some tape (I'd start with masking tape) on the surface BEHIND the edge...I'm sure glass to tape stiction would be much less with tape in -place and prevent your symptoms...maybe after some time and surface aging/oxidation, the effect will go away...let us know how you make out...
Good Hunting
These are just some thoughts, but you might give some help or inspiration...
...root-cause is clearly too much adhesion between the glass and new rubber...silicon might actually make it worse in that it allows an intimate (almost vacuum seal type) contact between glass and seal... maybe (absolutely) dry would be better as it allows this contact to slip easier...I wonder also how much of an effect the contact angle has, and if this can be varied at all All that is really necessary for the seal to do its job is that edge has a good contact with glass (no more!)...so I'm thinking some tape (I'd start with masking tape) on the surface BEHIND the edge...I'm sure glass to tape stiction would be much less with tape in -place and prevent your symptoms...maybe after some time and surface aging/oxidation, the effect will go away...let us know how you make out...
Good Hunting
I wonder how close dimensionally these repro rubber pieces are to the originals, which don't have this problem when correctly installed.
Wouldn't be the first time for repros to disappoint.
Wouldn't be the first time for repros to disappoint.
Also maybe try some wax on the rubber, or the glass, whichever streaks less.
Some quick googling says they sell dry teflon powder lube that might also work well.
Some quick googling says they sell dry teflon powder lube that might also work well.
Was thinking that something glass-specific like Rain-x might be worth a try. Haven't gotten to it yet... pinion seal replacement got in the way last weekend.[emoji849]
Guys; I believe any cleaning or lubing or coating on the glass will exacerbate the issue, as this will increase adhesion between the two surfaces...what John needs is LESS adhesion...the glass needs to be allowed to glide past the gasket because it is not adhering to it... only the edge of seal wants to touch the glass to block or squeegee moisture away...the rest of the seal is really just along for the ride and wants to slide along any glass contact... lubing between the two (intended to allow them so slip past each other) will only increase (contact) adhesion and encourage seal curling under...
John; I'd try talcum powder between gasket and Glass to decrease adhesion...CVF's scoring is a variation of abrading the surface to decrease adhesion, and this is a variation of my tape technique I suggested earlier...I expect roughing up the surface behind the sealing edge with have the desired effect...
Good Hunting!
John; I'd try talcum powder between gasket and Glass to decrease adhesion...CVF's scoring is a variation of abrading the surface to decrease adhesion, and this is a variation of my tape technique I suggested earlier...I expect roughing up the surface behind the sealing edge with have the desired effect...
Good Hunting!
I just installed these the other night and I'm having the same problem. The new rubber is extremely soft and grips the glass instantly on roll down. I actually tried the tape idea and it seems to work well for now but I know the tape will eventually start peeling up.
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