Technical I give up... what are these for?

Maybe the idea was that as the suspension goes up the rear spring hanger goes back and up so if you push the spring hanger up it may lift the wheel faster that the rate of lifting the body??
Or the bumper bracket is just too weak to lift the car with and Pontiac owners don't want to get under the car to place the jack. The funny thing is, my '37 Cadillac does not have them so the Cadillac owner has to get under the car. Or the Cadillac owner's driver has to get under the car. I think Cadillac just did not want to have these funny looking brackets hanging under the rear of the car.

Oh I found the info on a site "oldcarmanual.com" the have a lot of info there.

 

Jack em up, jack em up, buddy gonna shut you down! No wait.....that was tach em up. Never mind. I am Butch/56sedandelivery.

 

They are there for aesthetics.

 

Silly me, I thought they were redneck wheelie bars.

 

On really long springs,
Without them unless you jack under the axle, can you imagine how high you would need to go to get the wheel off the ground if you jacked off the body?
Be abit like the bloke in the pic above.

 

Storage hooks

 

Interesting concept, when you put the jack under the bracket, it would lift the car faster, and it would also lower the wheel from the body work to make it easier to get the tire out of the wheel opening.
I've had a few cars through the years where adding extra clearance between the tire and the fender would have been helpful. Gene

 

Also picking up some leverage helping the jack out and not nearly as dangerous as the bumper jacks to come.

If they'd been on Oldsmobiles Christmas Story would have been a different movie.

 

I don't know if it actually lowers the axle or wheel. To me it looks as though the spring is made flatter, when the rear shackle pivots up, and that keeps the wheel and axle from dropping. That helps to lift the rear axle more and not so much the whole car?

 

They're silly, cut them off.

 

Oh, poooooo....

 

That is so awesome. I guess the mob contract on these fell through since you could see the evidence...

 

I agree that the shackle being pulled rearward when the jack raises would seem to flatten/tension the rear spring. This would emulate placing a jack under the axle U bolts. It would raise the tire in the wheelwell allowing you to clear the tire free from the ground faster than a frame jack position where you have to wait for the leaf spring sag to clear the tire from the ground.

I love ingenious stuff like this!

• I'd guess it may be patented or we'd have seen the aftermarket offer it for other cars? Anyone good at patent searches?
• I'd love to see the O/P jack up the car via two methods; a traditional frame mount jack and then the Pontiac shackle mount jack and show us two side pics and the difference (measured from bottom of frame to ground) to clear the tire tread from the ground on each method.

 

Alright, who backed the clear car into something? Can't blame the "blind spot".

 

Were they only on GM vehicles?

 

I admit I havent read the entire post BUT the extensions on the rear shackle are to prevent the shackle from rolling over . Meaning it could under some conditions, have the spring above the shackle mount ( its not on the frame ,its outside of it and could flip or rollover and make it lean . At least thats what I was told .

 

that's not a clear car it's painted with base coat clear coat

 

Tie downs used on car transporter?

 

The mystery was solved a long time ago.

And the springs are directly under the frame rails, with one shackle on each side. Look at the "clear car" in post #74.

 

Thank you . Im sure one of the spring mounts are on the outside of the frame , maybe the front but it doesn’t matter now .

 

Lol...you guys skipped a page. We solved this one on post #38.

 

......... Post #11

<-------- '36

 

>>>We solved this one on post #38.>>>

No we didn't. Everbody knows the front end of a rear wheel drive tries to go slower than the rear end. So the front end lifts up to try to go slower than the rear end. So a rear wheel drive needs antiwheelie wheels like mentioned earlier in this thread to prevent this. So here's a side by side comparison from a bulgarian car magazine of what really happens when antiwheelie wheels are used and when they are not used when they obviously should be.

 

Lol...somebody needs to tell squirrel. I think that’s his car.

 

Sorry... but no vacation prize pack and barrel of cash without photographic evidence.

 

stunt man grab handle.......i asked Jackie Chan....now hes knows spring hangers.....im not lying....