The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - A different approach to a LWB to SWB conversion

**29od1** · 04-19-2015, 11:10 PM

Any of you certified welders know what the reduction in material allowables is due to welding? We could do a quick axial and bending calculation on the frame and see if it's anywhere close to Fty. My guess is that with a good weld and a 3 ton load at the rear bumper, it should be no problem with a C20 frame.

At least the analytic calculations would stop the conjecture whether it will fail or not.

I think this method of cutting down a LWB could save a ton of welding and body work. I can't wait to see the final product and how you tackle the hardest part.

04-19-2015, 11:10 PM	#36
29od1 Senior Member Join Date: Oct 2006 Location: Wichita, Kansas Posts: 1,050	Re: A different approach to a LWB to SWB conversion Any of you certified welders know what the reduction in material allowables is due to welding? We could do a quick axial and bending calculation on the frame and see if it's anywhere close to Fty. My guess is that with a good weld and a 3 ton load at the rear bumper, it should be no problem with a C20 frame. At least the analytic calculations would stop the conjecture whether it will fail or not. I think this method of cutting down a LWB could save a ton of welding and body work. I can't wait to see the final product and how you tackle the hardest part.