Landracing Forum
Bonneville Salt Flats Discussion => SCTA Rule Questions => Topic started by: Clay Pitkin on March 06, 2011, 11:47:08 AM
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Ok I need some help please, (Hot nuts, not that kind of help :).
Rule Clarification.
As I read the new rule book, as I understand it by 2012 ALL Cars, regardless of speed or class will have to have Lexan polycarbonate windows is this true? Is plain plexi glass acceptable instead of Lexan?
Drive Hub:
For those of us that is "less knowledgeable" what is a Hotchkiss type rear axle? I have a 1996 Geo that I run, and its front wheel drive. Ok on the front CV axle, it just has a big nut that you have to torque to 180 FT pds, no clip to retain the nut, other than you take a hammer and notch the nut. Also, under the car on the front suspension, the bolts are not secured with cotter pins, it did not come this way from the factory.
Is this acceptable?
TIA
Clay
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rulebookinfo@scta-bni.org, send email or www.scta-bni.or, click on rules questions on line form.
DW
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One easy answer is. No. Plexiglas (cast Acrylic) is not a substitute for Lexan (Pollycarbonate). Plexy is brittle and has several of the same problems as glass.
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From The Rules on the Home Page:
Vehicles with T-Tops or moon roof panels shall have the panels retained with tabs or straps.
This is for 2011 ONLY!:
All vehicles over 250 MPH shall replace all non-laminated safety glass windows with polycarbonate material. All other glass, such as headlights, must be covered with SAFETY film.
Beginning January 1, 2012 all vehicles in classes where the record exceeds 200 MPH must have all non-laminated safety glass windows replaced with polycarbonate material.
Beginning January 1, 2012 all vehicles with “frameless” side windows, regardless of speed, must have all non-laminated windows constructed of polycarbonate material.
Additional bracing must be installed to prevent window blowout or collapse.
Added from 2010 rulebook, in effect for 2011:
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Here's a thought in regard to the window rule for 2012, it says vehicles that go over 200 mph must replace windows that are not laminated glass with polycarbonate material, my question would be if you have side windows that are non-liminated glass, could you replace them with laminated glass instead of lexan (polycarbonate) material?? Just a thought, it might me easier and more rigid to do for the side windows that are frameless on the newer cars. Dave :?
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Here's a thought in regard to the window rule for 2012, it says vehicles that go over 200 mph must replace windows that are not laminated glass with polycarbonate material, my question would be if you have side windows that are non-liminated glass, could you replace them with laminated glass instead of lexan (polycarbonate) material?? Just a thought, it might me easier and more rigid to do for the side windows that are frameless on the newer cars. Dave :?
I have been told that the Studebakers from the '50s did use laminated glass for all of their windows-( I do NOT know it to be fact though).... and thus, they are exempt from having to do this window change.... of course, laminated glass doesn't fracture into a zillion tiny shards if the window breaks or gets blown out.
My take would be this, make an official request and get an official response FIRST - BEFORE YOU GO AHEAD AND DO THIS!
But with all of the curves that most, if not all, modern cars have in their side glass, using lexan would undoubtedly make it far easier to duplicate most side and rear windows.
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Always use caution when reading things into the rules.... It does not say if the stock window is not laminated you must put in lexan, it says non laminated must be lexan...
If you have or put in laminated glass, then you don't need lexan.. to me it seems either/or laminated or lexan.
Of course keep in mind that I am not the board certified decision maker.... just been reading the rules for a long time.
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My 1953 Studebaker had Laminated Side Glass... I did however replace the back side glass and door glass with all new Lexan...
Charles
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I have been told that the Studebakers from the '50s did use laminated glass for all of their windows-( I do NOT know it to be fact though).... and thus, they are exempt from having to do this window change.... of course, laminated glass doesn't fracture into a zillion tiny shards if the window breaks or gets blown out.
Not true, I had a 58 Packard that the rear window blew into a million pieces, parked it in the shade, and when the sun hit the car, it pressurized and and blew the rear window out, some of the pieces were 50 foot away. :?
Steve
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Hey Steve, Studes and Packards are not the same company... yes I know near the end of Packard, Studebaker bought or merged them, but they were different. I've been away from the Stude scene for a while now, but that is my memory....
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Stainless --
The '58's were Studebakers with Packard taillights.
Stan
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Stan should know, I think he drives a 4-door to his daily detox meeting......... :-D
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Yeah -- and with that McCulloch (sp?) on it, it's surprised some ol'farts like you, Bob.
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One of my relatives had a 54 Stude with a bigger Packard V8 in it with a 3 spd overdrive. This would have been about 1960 or 61.
It was pretty darn quick and probably had 4:11 gears with the overdrive.
For me it was love at first sight, and when I first visited Speedweek in 1995, I knew what I was going to build within 20 minutes.
I had a old jr. fuel early olds engine which I thought "what the hell" and stuffed it in a 53, and the rest is History: Old(s) Stud(e) Racing .......... 219 with the Early Olds, and last year 238 with a BBC.
Hope to get Gary Spencer's A/CFALT record this year on 25%. Bob
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Fastman is correct...always read the entire rule and SEE if it pertains to you and the class record you are running in...I remember when 1" luguts became part of the rules and many guys panic. They never read the speed and neither did some of the inspectors. That isn't to say not to do it as the rules laid out in the book are the minimum required. The speed rules do not require a parachute on my roadster in the XO class but would not run without it...........Good Luck
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Well, I think I will investigate and see if my 1963 Avanti has laminated side glass, then I should be OK, but I know for a fact that my rear window was tempered glass, because we blew it out at 185 mph on the 5 mile track about 8 years ago and it took 75 volunteers and my race team over one hour to pick up all the glass, :cry: Boy did I have to buy a lot of beer in the pits that year! So after that experience we shaped the rear window into the correct form out of Lexan and bolted in it, been fine now for the last 8 years and been OK at 216mph. I've got some neat decals on the side window I don't want to lose by installing lexan, so I hope the side windows are laminated. Dave
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Dave,
I just revisited this thread.... and we have some nice stuff on our rear windows as well....
Carefully take out your windows and have them scanned and get someone to make up decals that duplicate what you have.... it is not expensive anymore to get stuff like this done..... or even.... have it printed, somehow, directly on to your lexan windows- which might be a little more complicated and costly though
But save the old windows as they are.... decals and all!
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"Fastman", you are 100% correct, we recently started looking into what you said about keeping the decals (computerized technology makes it possible) for history purposes, that's what we will have to do the racing in 2012, we made out back window out of tinted lexan 6 years ago, so we only have to handle the side windows, thanks for your comments, see ya at Speed Week. Dave :cheers: