Rear frame X member?

[Chuck Leeper]

Made a proto plate. Drilled the holes w/o slotting them. [3/8"] The center hole is 2 1/4" dia. Plate is 1/8" hot rolled.
Here's a couple pics of the plate and it being on the frame.
If I made the inside edge the full length of the plate, it would allow the dr side to be as low as the bottom edge of the frame flange.
Note: The bolt pattern is reversed from the pass side. I am making the plates so there's no R & L. Just flip them over.
The flange on this first set will be tig welded on, as I want to be more accurate than using my plate bender.
The bar will be heavy wall 1" sq tube.
The fronts will be the same. All 3 holes will be used. [The 1 pic I saw of another bar, had only 1 bolt in the end...Y/N??]

Maybe, we can get REALLY trick, and employ some stress coat, and see what happens w/ a 25psi launch!

 

[Boston GN]

I don't know if I would personally want it, if you could see it. That's the main reason I have not done the trailer hitch setup on mine. Would rather have it out of view.


Posted from the TurboBuick.Com mobile app

Agreed. I could def. use one of these as I run a glass rear bumper. I'm shocked no one has produced one of these for sale.


Great info/pics Coach! Thanks for taking the time!

 

[charlief1]

I'm going to point 1 thing out Chuck. Before you weld things together put the body back on the frame first. The frame has a lot of flexibility as you know so the bumper mounts may move some and then you'll need to revise things some. You could also make a removable mount set up so you could attach a parachute and remove it after you leave the track.

 

[VaderGN]

Great info/pics Coach! Thanks for taking the time!

Agreed, whether they get mass produced or not. Let's give Coach credit for his design. Thanks


Posted from the TurboBuick.Com mobile app

 

[charlief1]

Hey Chuck, show how you did the brace on the rear cross member so others can see how you did yours. I'm sure yours looks better than mine does.

 

[coach]

Or just PM me your dim between frame rails or the bumper mount flanges and I'll double check it with my frames measurement. I know they move, but they have to be somewhat close.


Posted from the TurboBuick.Com mobile app

 

[Chuck Leeper]

I made a rotisorie bar for the rear of the frame, b4 I took the body off. After the frame was out, and I was going to put it on the roto, I had to use a tie down ratchet, to pull the frame back in...[<1"]
I then tacked a tie bar in, to be sure it stayed put, b4 I rotated it.
I think the 25 yo body mts are a possible source of frame spread, too. Would be nice to have a factory drawing, that shows frame dimensions, like we have on the tri 5 Chevys. NE1 have such??
Coach, I will measure and post the dimensions, ASAP.

 

[CGASTON]

This is mine. When you see how big the rear H of the frame is, its common sense that you need something like this. Problem is with welding something straight across you will block the tank if you have to drop it in the future so we came up with a bolt on solution. Welded an 1/8" plate to the frame, and fabbed up the crossbrace with some grade 8 hardware, very beefy.

Hey there, is your car caged? Is it tied to the frame if so? What are your weak spots? If caged, then why reinforce the rear frame. Are you riffraff that the support is gonna drag?

 

[charlief1]

I've got the pics and measurements for a Malibu frame which is slightly shorter I believe Chuck.

 

[DavidM]

If someone wants to make a few brackets I'm in, paypal ready. I'll figure out the tubing and welding on my side.

Thanks

 

[davelostmissing]

..
I think the 25 yo body mts are a possible source of frame spread, too. Would be nice to have a factory drawing, that shows frame dimensions, like we have on the tri 5 Chevys. NE1 have such??
Coach, I will measure and post the dimensions, ASAP.

PM Chuck, Charlie

 

[dsapper]

Hey there, is your car caged? Is it tied to the frame if so? What are your weak spots? If caged, then why reinforce the rear frame. Are you riffraff that the support is gonna drag?

I really have no idea how to answer that...

 

[CGASTON]

I really have no idea how to answer that...

That jacked up word is from autocorrect. Was suppose to be afraid.


Clint

Posted from the TurboBuick.Com mobile app

 

[dsapper]

That jacked up word is from autocorrect. Was suppose to be afraid.


Clint

Posted from the TurboBuick.Com mobile app

lol, no I have no roll cage, its a street car. It cant drag its above the bumper, in that picture the rear bumper is removed

 

[Chuck Leeper]

Hey Chuck, show how you did the brace on the rear cross member so others can see how you did yours. I'm sure yours looks better than mine does.

Here tis!!!

 

[coach]

Here tis!!!

Wow...I really like that. I can use that in my design for my new frame.

Thanks Chuck


Posted from the TurboBuick.Com mobile app

 

[6togo]

I just did some tube work on my frame similar to that before i started the notching seemed to really tighten things up!

 

[charlief1]

Here tis!!!

I like what you did with it Chuck. I see you boxed the frame as well.

 

[Chuck Leeper]

I like what you did with it Chuck. I see you boxed the frame as well.

Yep.... Not everything around here is as stiff as I like it to be!!

 

[coach]

Yep.... Not everything around here is as stiff as I like it to be!!

Careful Chuck...something's have to "flex" a little or they might "break!!!"...ouch!!!


Posted from the TurboBuick.Com mobile app