Technical > Roo Man's Room

types of chassis (back half)

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wideopen231:
I built mine with the Woody Gilmore style. Had no issues with lower tubes,seat position or anything else.Well not related to the lower rails.LOL

sawdawg:
That brings up another question, I have lot's of them,  what is the angle of the back tubes and how far behind the  axle center line is a good place to start for the rear upright tubes. I guess it depends on the drivers physical size but it seems it would be hard to try to get in and out of a car with just the tubes taped together to get an idea of where things should go. Or should I just get a kit with a blue print?

I tried to post a picture of my Bonneville car, don't know if I was successful or not. The car needs some explanation. How can a Bonneville Lakester only go 160 mph with an LS 3 engine (see my profile) The reason is that the LS3 is the new engine and I haven't run the car with it yet, maybe this year. I only participate in the Bonneville World Finals which takes place in late
September or early October. The August meet is too hot and crowded. The Finals event has been rained out for the past 5 years. The old engine was a Nissan V6 with 154 horse power so 160mph isn't too bad. But my goal was 200mph. I tripled the horsepower to get 40 more mph. No one ever said I was smart.

lake_harley:
I realize this is an old thread but it's related to a construction question I have. I have S&W plans that use lower tubes that are bent upward to the shoulder hoop. My question regards overall complexity of bending tube. I read on another website that a builder recommended no more than 1 bend per length of tube to avoid difficulties with "clocking" 2 or more bends in multiple angles and direction; ie 2 bends maybe rotated 90 degrees from one another, or 2 adjacent bends that the tube legs need to be perfectly on the same plane (think shoulder hoop or roll cage tubes. His suggestion was to use 1 bend per tube and then splice the tubing using an inner tube with rosette welds. I can see that would be a lot more simple to construct, but at the same time it seems patched together. I guess all in all there wouldn't be all that many spliced areas in a chassis?

Lynn

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