windscreen pillars

[hal 1]

any ideas on this theory? my windscreen pillars are fixed to the bulkhead and are solid! should the glass and frame be as rigid or should there be some sort of cushioning between those and the pillars eg silicone sealant? my thoughts are with the latter but i've been told that the glass should be just as solid as the pillars to help prevent scuttle shake!

[Wacky Racer]

Personally I would go down the silicone sealant route....

[byebyegti]

id use silicone to seal

>> Edited by byebyegti on Sunday 25th April 16:40

[grahambell]

hal 1 said:

any ideas on this theory? my windscreen pillars are fixed to the bulkhead and are solid! should the glass and frame be as rigid or should there be some sort of cushioning between those and the pillars eg silicone sealant? my thoughts are with the latter but i've been told that the glass should be just as solid as the pillars to help prevent scuttle shake!

Remember the recent TV advertising campaign for Autoglass (I think) stating that the windscreen adds something like 30% to the strength of the car?

I'd say that unless the screen is designed to be fitted using an old style rubber seal, bond it in so that it's solid, but you might like to pick a windcreen fitter's brains first.

>> Edited by grahambell on Monday 26th April 12:24

[Avocet]

Take some very careful measurements across the diagonals of the windscreen aperture and then park the car (fully loaded) with one wheel on a high kerb and measure again to see if it has lozenged at all. If it has, I'd be inclined to use rubber unless the screen is flat. If not, use a polyurethane screen sealant and glass primer rather than silicone.

[Mr2Mike]

grahambell said:

Remember the recent TV advertising campaign for Autoglass (I think) stating that the windscreen adds something like 30% to the strength of the car?

That would only apply if the car had a rigid roof. On a convertable the windscreen can't really add much in the way of rigidity to the scuttle.

[grahambell]

Mr2Mike said:

That would only apply if the car had a rigid roof. On a convertable the windscreen can't really add much in the way of rigidity to the scuttle.

Well an Elise with body fitted has a higher torsional rigidity than a bare Elise chassis, and realistically there's only the windscreen and roll bar that could make any significant difference.

[hal 1]

thanks for all the info, the car i'm building is a convertable and i'm expecting some amount of scuttle shake so i'll use the silicone/mastic sealant route so hopefully i wont have any problems