Lexan for a RX vehicle

[TouringBubble]

What are the rules on this? The new SCCA site download section is currently on the fritz and I can't DL the rules.

I'm going to compare costs for new glass and lexan for the Beetle.

Planning to rivet in the front with a center brace with a couple of safety mounts on the outside. For the sides I wanted to just use the factory mounting for the rear quarter glass (rubber in a channel). For the doors I was going to remove the triangle window and make a single sheet with "pegs" or a slat at the bottom for alignment and a latching mechanism (or 2) at the top. Would have a net for driving with no glass installed.

Would this fly?

[slowautoxr]

I seriously doubt it. I see no mention of wings, stabilizers, props or jet engines.........

But if you want to rallycross it, Lexan is good for the windows with the exception of the front windshield. If you do that, than you must add a cage. If you want to install window nets or arm restraints, than side windows are not required.

[TouringBubble]

Wow ...need a cage for front lexan. That's crappy. Guess it's just the sides for now. Those will be cheaper anyway.

For the door glass I just wanted the option for wet events. Would mostly run with the net. Will keep looking for the SCCA site to recover and go over the exact rules there.

Thanks!

[bmwe21]

mod class is the only class that allows removal or replacement of windows with non glass/ lexan.
the ONLY window required in mod is the front windsheild, if it is a non factory (non glass) windsheild (Lexan ect.)you must have a rollcage built to Improved Touring ( IT ) specs or better
If you do not have a side window on the drivers side ( or passenger side if you have passenger) you must have a window net, .......you may get by with arm restraints I can't remember? hope this helps! Byron

Charles is quick!

[TouringBubble]

This will be a MR/MR car, but that is good to know. Thanks.

Do you guys know the rules on window nets off the top of your head? Just need to know how big the need to be. Entire window, certain percentage, standard size or what?

[bmwe21]

I would think the biggest that would cover the majority of the opening, I personally have not seen any requirments other than "you must have a window net" if you don't use a window or arm restraints. You may want to look under the GCR and use that as a guide, I would think if you used that it would be hard for anyone to argue with?

[JohnW8]

This will be a MR/MR car, but that is good to know. Thanks.

Do you guys know the rules on window nets off the top of your head? Just need to know how big the need to be. Entire window, certain percentage, standard size or what?

Matt, You need a window net big enough to keep inside stuff in (arms legs, hands) and outside stuff out (Tires, bark, mud blobs, fenders). Although I would think you'd need a roll cage in order to mount the window net in the car. I thought the Rallycross rules state you rolled the windows up while running. If so, there'd be no need for a window net or arm
restraints.


From the 2011 GCR:

9.3.54. WINDOW SAFETY NETS
Window safety nets shall be used on the driver’s side window of all
closed cars. All window nets shall meet SFI Specification 27.1., and
shall bear an “SFI Spec 27.1., Label” to that effect. (Note: Window nets
need not be dated.) The window net shall be equipped with a quickrelease
device and when released it shall fall down, thus not having to
be flipped up on the roof. Nets shall be attached to the roll cage; plastic
buckles, cable ties, hose clamps, and elastic cords are not permitted.
Holes in the roll cage to accommodate either support rod are unacceptable unless bushed and welded completely. Refer to figures 7 and 8, “Proper Window Net Installation,” for additional information on mounting methods. Closed cockpit Sports Racing cars may use arm restraints in lieu of a window net. Legends Cars are not required to have window
nets.

[TouringBubble]

John, the RX rule is that the window must be up, or you have a window net/restraint if it's down.

Looks like you need a cage for a window net for Club Racing or TT, but I don't think that is a stipulation for RX. I could pretty simply attach one directly to the door. I know that's not the correct or intended mounting, but it checks a box.

For all this hassle I may just plan to leave the lexan in for racing. I plan to have a roof scoop for airflow and will likely add ducts at the rear eventually.

[JohnW8]

I found the Rallycross rules and had a good laugh. there's 1.25 pages on safety and 8.5 pages on protests, penalties and appeals.

No mention of any requirements for mounting a window net. Without being securely mounted with tension on them a window net is just a holy piece of cloth over a window.

Seems a bit sketchy.


I'd just run with the window down 1" as allowed in the rulebook.

[TouringBubble]

If I switch to lexan I'll be ditching window regulators and all. Maybe I'll hinge the top 1". lol.

[JohnW8]

You're not gonna get rid of all your road huggin' weight, are you?

[TouringBubble]

I'll eat a cheeseburger before an event.

[Cholewa]

I'll eat a cheeseburger before an event.

Not always recommended before rallycross.