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Old 01-02-2008, 08:51 PM   #7 (permalink)
Coyote X
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Join Date: Dec 2007
Location: Southen West Virginia
Posts: 654

Metro XFi - '93 Geo Metro XFi Convertible
90 day: 62.17 mpg (US)

DR650SE - '07 Suzuki DR650SE
90 day: 55.26 mpg (US)
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Well the car is stripped down as much as needed now Lots of rust pics to follow...

I am not really sure what size tubing I will be using yet. I was mainly concerned with getting it stripped down first and seeing what it looked like. I will be talking to a few race car builders and seeing if I can come up with a plan. But I figure for this car it has no power and no weight so it can go pretty light with the frame and still be very strong.

This is the frame for the kit car I built, I figured I would do something very similar for the convertible. It was made with 2 inch for the main parts and 1.5 for the rest of it. For the convertible I will probably use 1 1/2" for the main rails, not sure of the thickness yet. I don't see a need to make it race car like though. I will add a roll bar but I am not sure if I am going to do the side impact bars or just leave the door ones in place. Climbing over bars every time you get in or out of the car is kind of annoying.

I think the 16ga thickness is probably what I will end up with in chromoly for the main frame rails and roll bar. All the supporting stuff and bracing I will probably go smaller. I would rather have a very stiff main chassis that is stronger than needed than have one right near what is considered safe, the extra 5-10lbs is not really that big of a deal but it can make the car a lot stiffer and keep the body sitting square much longer no matter the abuse it gets.

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