[Marco Tahtaras]

Originally Posted by Al

When I attempt to "open" my windshield at anything over say 20 mph the wind quickly closes the windshield. I've resorted to using something to hold the window open at speed. So after doing that for years, I'll finally ask.....is this typical of a '29 open car or perhaps I'm missing something that will allow me to hold the windshield open?

I've tightened the wing nuts as much as possible but to no benefit.

Thanks
Al

I've posted on this subject a few times in the past. Here is a copy of one of my earlier posts:

Posted by Marco Tahtaras from c-67-164-64-155.hsd1.ca.comcast.net (67.164.64.155) on Monday, May 21, 2007 at 10:33PM:

It's usually is caused by reproduction parts and many can contribute. You will have to investigate to determine just what you have going on there.
Note that the windshield is held in position by friction between the cone on each end of the windshield and their MATING cups within the stanchions. There are a number of things that can prevent them from mating properly.

1. A cup has been replaced in one or both stanchions. A repro may not have the correct shape, a cup not tack welded in can turn with the windshield, or a cup tack welded in at any angle not true to the windshield could reduce the mating surface by as much as 85% (15% remaining).

2. The special nut that holds the cone to the windshield frame via the threaded stud is too thick (I've seen this). The thicker nut bottoms out in the base of the cup before the cone is pulled tight into the cup.

3. Cups or cones (most likely) are reproductions and the tapers don't fit well enough to provide the necessary mating surface.

I would first inspect VERY closely for ANY visible spaces or gaps between each cone and cup. This could be top, bottom, front, rear, or all around. This may or maynot tell you quite abit. Next, remove one stanchion and windshield frame and inspect the cones for markings. It should be very clear from these markings where the contact points are or MORE importantly where they aren't!

Check it out and see what you find. If you don't see an obvious solution then we can take it forward from there.