What gauge steel???

[sheumadb]

What gauge steel should be used when building a frame for a 125cc Lifan. I was planning on using 11 gauge but then started thinking about if that was too thick and would add too much weight to the bike. I am planning on using a combination of rectangle (2" x 1") and square (1") tubing. All comments welcome. Thanks.

 

[sean01]

it would depend on what type of vehicle you are making.. ie: on or off road

2-3mm tube would be heaps for off road 2mm would do for on road, but the magic is in the design

take a differential, in standard passenger cars diffs are constructed of thick wall tube. in professional race cars like v8 supercars the diff is made from sheet metal but braced in the right area's...

 

[sheumadb]

Thanks for the reply. I am planning for it to be on road. The design that i have draw up is based off of the smaller pocket bikes but scaled to be more of a mid-size bike. I've been trying to locate some of the other 110 -125cc frames to look at but i havent been able to find anything that has been much help.