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Author Topic:   New car; high right side frame rail?
posted July 03, 2003 12:16 PM
I'm in the design stages of a new chassis, an offset design. Stock front clip, 2x3 the rest way back. I keep coming back to the right side frame rail, Is there any reason the right side frame rail cant go straight back from the front. I always see the rails drop down than go back.. I cant see any reason it needs to be down that low. Were only talking about 8 inches..

Anyone seen a frame like this before? Or have any current pictures?

Ill illistrate(spell) with a picture this weekend!!

Later; widebody
HAVE A GREAT 4th of JULY everyone.

posted July 03, 2003 02:25 PM
for one if you just run it straigt back your center of gravity will be way out of wack and where do you plan on mounting the lower control arm with it way up there i'm assuming your talking about going straight off from where the upper a frames mount on the chassis right?

posted July 03, 2003 10:55 PM
STOCK FRONT CLIP. Im talking about just behind the front control arms. Im only refering to the section between the wheels. Man I should have included more info on this idea.
The CG is one issue, Ill have to play with one of te online calculators to see what the differences would be. Its a difference of 6-8"... and only on the right side...
Ill take a picture this weekend and illustrate my idea..

posted July 04, 2003 12:24 AM
Design standpoint, do anything you want. Safety standpoint, lookout! After you design your chassis look at the safety aspect of it. Will it hold up in a left turn roll? Will it take a hit on the passenger side? I've built cool, lightweight chassis before, but I won't sacrifice safety! Good luck!

posted July 07, 2003 09:16 AM
Wow; hold on a second.
Im not moving the frame rail to the top of the cage. I think a picture will help here. The picture is of an IMCA car, but it illustrates my idea. the material is 2x2, id be using 2x3 for the rail, as per rules. The new rail is only going to move in about 6" and up about 1"-2" total. The car will still have side bars and door bars. Believe me Im all about saftey!
This isnt a drastic change. I wouldnt think the CG would change from this slight move.
Just poking around for some ideas is all.. Its probably not worth the effort!!

posted July 07, 2003 10:44 AM
when you run the right frt frame rail straight back the tech crew will call it an offset cage .
we've been building camaro clip cars like this for years
your left side comes up and with some planning you wind up with a real strong chassis
good luck

posted July 07, 2003 09:06 PM
wide how do you plan on putting an x in the frame or do you? thats another thing you may want to take into consideration

posted July 08, 2003 08:54 AM
17j i havnt got that far yet, but Ive been thinking of switching to an H style cross brace instead of the X frame. That would make the most sense in this arangment, I think..

Offset is not an issue, the camaros as you stated have been doing this very thing for years. Im just tring to incorporate it into a perimiter chassis..

Pipes- more left side, and lighter weight without a sacrifice in strength is a another plus..

My main goal was to make the construction of the offset chassis easier. I figured id bring the frame in instaed of the tubes out. Just keeping the ol squirl cage in my head moving, always looking for an edge.,.

posted July 08, 2003 06:05 PM
what about floor pan? Do you have to run stock floor pan in your class

posted July 08, 2003 11:08 PM
wide the point i was making is reguardless of what type of bracing you put in you could use a x,y,z brace but you still have to keep in mind you have to have a flat surface for your cockpit and also need to work aroud your tranny and drive shaft. here's a good idea for you tho go to your local hobby store and buy a 86 monte ss or buick gnx model and some plastic tubing and try some ideas on that alot cheaper then doing the real thing first and finding out it won't work

posted July 08, 2003 11:20 PM
you know after reading the others post on here i'm wondering are you just bacily tring to narrow the cage up?if so then all kinds of mod builders do it kinda like that but they put it even with the bottom of the chassis wich would only be about a foot or so more tubing on that side then how you have it right now. then you would'nt run into the bracing or cg problems i was thinking about with that being straight off if you welded that in place right where it is in the pics and hooked the cage to it

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