Skip to main content

What do you all do for the rear window when the cage goes through the rear window?

I am wondering how you seal the lexan window around the tubes? I have not seen any pictures of this area. ANyone have some to post?

How thick is the lexan you use and how do you install it - production gasket, glue in, etc.

Anything else important when doing this?

Thanks for the help.
Original Post

Replies sorted oldest to newest

I used lexan or plexi when I did mine. At the moment (and for the last 5 years) I have not sealed the holes around the bars. I just cut the acrylic using the original window as a template and used the stock rubber gasket. Be careful though as the acrylic is not as chemically resistant as glass and can be damaged. Learned this the hard way. I cant remember what sprayed on it but it made a nice pattern on the acrylic.
You might try to find an oblong or oval rubber grommet to seal the window against the cage tubes, similar to the round rubber grommets used to pass wires or pipe through sheet metal panels.

Try:
http://www.customrubbercorp.com/p_gromm11.htm
http://www.manuf-rubber.com/grommets.html
http://www.mcmaster.com/#rubbe...met-bushings/=cvzjqu

Or maybe line the opening in the window with Edge Trim:
http://www.mcmaster.com/#flexi...rip-grommets/=cvzkil
Not sure if you have already put in a roll bar, but one solution I've mentioned before was to install the roll bar behind the rear window inside the engine compartment with bracing running back to points on the chassis inside the engine compartment. That is the way my McLaren was done. The only thing you lose are the bars inside the driving compartment that: (1)give side protection and (2)stop flexing of the chassis. But if you are only doing a roll bar for rule compliance in ORR type events, this is another option and having the roll bar behind the rear window certainly cleans up the inside of the car if you are still driving it on the street to get your groceries on the weekends or out to dinner.
My car is going to be a primary street car, but with a pretty agressive engine plan.

I really want to stiffen up the car though.

I was going to make the cage part inside the vehicle pretty unobtrusive so no door bars.

I don't have to worry about specific design for racing compliance.

Thanks for all the suggestions. Keep them coming.
Post
×
×
×
×
Link copied to your clipboard.
×