I'm starting to design my next buggy. It will be a 4 seater with watercooled motor (possible Honda V6 or turbo 4 cyl). I was thinking about building the frame out of 1-3/4 .095 tubing. I have the die for my bender (was working on circle track stuff). The tubing is about 1/4 pound heavier per foot than 1-1/2". I'm just thinking with the high speed trail riding we do, the heavy motor, and 4 full sized adults, that the 1-1/2" tubing may be at it's limits. I've got some bends in my Berrien warrior frame with mostly stock VW motor. Not from hitting things, just pounding on it hard.
Plus I was at a local circle track store and they make some really neat stuff that mounts to 1-3/4" tubing
Any thoughts or experiences?