Making a Stainless Race Buggy » 63 I bent the rails on a bender. The most important part here is a lay out on the floor,

63 The side rails here are being made from 33mm tubing 3.5mm thick, you need 3000mm. Cut this lenght in half making 1500mm for each rail. You are going to need some sort of hydraulic pipe bending device here, to be able to get any sort of decent bend on the tubing. You can purchace stainless elbows, and use those instead, but in this case, I bent the rails on a bender. The most important part here is a lay out on the floor, in my case I have mapped out on some hardboard a centre line, where the rails are, the axle, and where the rails meet the swan neck. It is so important to take time at this stage to make sure your rails end up perfect opposites. Easy of course if you have a CNC bender. place two marks on the tube at 600mm and 1060mm.
The first bend is marked on the tube at 600mm from the end and bent at 135 degrees, the second bend is slightly harder as you also have to rotate the already bent section by 15 degrees, to end up keeping the side rails vertical instead of sloping outwards, and bend on the second mark to 120 degrees.

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