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914World.com _ 914World Garage _ Cradle Weld Technique?

Posted by: FL 000 May 23 2021, 10:06 AM

I have decided to make a cradle to support my engine and trans, well more for the trans. SBC engine and Audi 01E trans.

Engine already has the Renegade Hybrids support and I plan to run two 1.5” x 0.120 round tube perpendicular to the back to tie into the factory trans mount supports.

Most of the designs I see here use a tee weld of sorts, or fillet if I have my terminology correct. Basically tube meets flat plate and it is welded together.

I am not an experienced welder by any means, but I wonder if cutting a hole in the plate to allow the pipe to pass through, and welding on both top and bottom is preferred?

Good idea? Overkill, bad idea?

Thanks sawzall-smiley.gif welder.gif

Posted by: mb911 May 23 2021, 11:47 AM

QUOTE(FL 000 @ May 23 2021, 08:06 AM) *

I have decided to make a cradle to support my engine and trans, well more for the trans. SBC engine and Audi 01E trans.

Engine already has the Renegade Hybrids support and I plan to run two 1.5” x 0.120 round tube perpendicular to the back to tie into the factory trans mount supports.

Most of the designs I see here use a tee weld of sorts, or fillet if I have my terminology correct. Basically tube meets flat plate and it is welded together.

I am not an experienced welder by any means, but I wonder if cutting a hole in the plate to allow the pipe to pass through, and welding on both top and bottom is preferred?

Good idea? Overkill, bad idea?

Thanks sawzall-smiley.gif welder.gif



That would help for sure strength wise. Typical weld interface is 30% so your suggestion will help stiffen that joint versus just a levered effect.

Posted by: tazz9924 May 23 2021, 11:48 AM

QUOTE(FL 000 @ May 23 2021, 09:06 AM) *

I have decided to make a cradle to support my engine and trans, well more for the trans. SBC engine and Audi 01E trans.

Engine already has the Renegade Hybrids support and I plan to run two 1.5” x 0.120 round tube perpendicular to the back to tie into the factory trans mount supports.

Most of the designs I see here use a tee weld of sorts, or fillet if I have my terminology correct. Basically tube meets flat plate and it is welded together.

I am not an experienced welder by any means, but I wonder if cutting a hole in the plate to allow the pipe to pass through, and welding on both top and bottom is preferred?

Good idea? Overkill, bad idea?

Thanks sawzall-smiley.gif welder.gif

That should be good size tubing for what you are doing, it’s possible you could go .090 but the peanut gallery would know better. Cutting a hole and welding from both sides isn’t necessary. With good penetration you wont have issues. Of course it all depends on your design. A good drawing would be good so we can help you the best!

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