My T-bucket frame
- Thread starter Spanky
- Start date
Big Ayers
Member
2x3x3/16 on mine
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Indycars
Well-Known Member
Well I have to say you are obviously Wrong, LOL! I don't like having to drill big 1/2" holes to install to install threadserts. of some kind.
OK, go ahead and slap me around, I can take it Mr. perfect!!!
I have always drilled/tapped my frame with 5/16 or 3/8" threads, but I'm always been very careful about how tight I tightened devices, fuels pump, filters) with a 1/8" wall thickness .... think about it how many threads are there in 1/8".
So to stir the pot, do you use fine thread or course???
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Well, it's been 30+ years since we built my car, so I gottta think a bit. The only high stress connections I recall are the 4 bar mounts. We used crush tubes and long bolts for those to go all the way thru the frame rails. I know there are some low stress mounts, like headlights ( used 4 bolts each for those). I imagine we used fine threads there. I'd look, but can't work on the car now that I'm a wimp.
Pasthisprime
Member
Definitely not 1/8” for me. Just too thin, plus as others mentioned it can be tapped.
Rich B
Member
I've been using 2x3 3/16 tube for the usual reason of being able to tap for line clamps and brackets and it makes a stronger base for welding suspension brackets in place; whether those reasons are overkill is a matter of personal choice. I also use 3/16 when boxing original frames; same reasoning.
More opinions . . .
www.ratrodsrule.com
How thick should tubing on a frame be ?
Hello , I plan on building my own frame out of 2x4 tubing ,, My question is how thick should it be ? I was told the thicker is not always better, because of (sag) , I have no clue on this . do I need 1/8 th 3/16 1/4 .. which I think 1/4 will weigh to much IDK??? Im putting a 50 ford cab on...
www.ratrodsrule.com
RodStRace
Active Member
While I understand debating the different tubing sizes for a consensus of opinion, I'd imagine that having 3D modelling would provide solid (get it?) data points for strength. I also imagine that additional crossmembers would change things a bunch.
Spanky's round tube example shows that the basic design isn't triangulated or stiffened well. Obviously, a solid crossmember that spans the area taken up by the drivetrain would help, but kind of ignores the whole point!
If you look at an Ariel Atom chassis, it's obvious the standard T chassis is lacking, but the whole point of a T is to be traditional and simple.
www.3dcadbrowser.com
Look at Marty Strode's Track T-bucket frames. It has the typical perimeter rectangular tubing, but much more too.
So the whole exercise seems to be debating what type of wicker is used to weave a chair seat. It isn't the best solution and depends on how big the person (intended use) who will be sitting in it is. A child at home or a tiki bar with general public rough use.
Spanky's round tube example shows that the basic design isn't triangulated or stiffened well. Obviously, a solid crossmember that spans the area taken up by the drivetrain would help, but kind of ignores the whole point!
If you look at an Ariel Atom chassis, it's obvious the standard T chassis is lacking, but the whole point of a T is to be traditional and simple.
Ariel Atom Car Frame CAD Model | 3D CAD Browser
Download Ariel Atom Car Frame CAD Model for AutoCAD, SolidWorks, Inventor, ProE, Siemens NX, PTC Creo, CATIA, ACIS and other CAD packages.
So the whole exercise seems to be debating what type of wicker is used to weave a chair seat. It isn't the best solution and depends on how big the person (intended use) who will be sitting in it is. A child at home or a tiki bar with general public rough use.
the pic below is the rear frame from a C-5 Corvette, sawed off just ahead of the crash beam, for installation into a Corvair. I was amazed that Corvettes use such thin metal .
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