29 A Pinched Frame Question again Pic's please

Ok Iam thinking about **** canning the 30-31 coupster body and putting a 28-29 roadster body on my 32 frame. (I really wanted the 29 style)

My frame is built to 32 spec's and is already boxed. The problem iam worried about is how is the cowl going to look when its sitting on the frame. I don't want to pinch the frame.

The red arrow on the picture is my concern. Is this car pinched or not? And what is the difference between the two?

Thank You!

 

hey tom, did you find a 28/29 roadster body?

 

Not yet, just thinking about it if the frame will work and not look like ****.

 

If you stop and think about it, they didn't pinch frames back in the day. The rolled the wrecked 32 body off, and bolted down the A body. Pinching frames is a modern trick.

 

Yes, your frame will work fine. It's a matter of preference;some like them better on a stock deuce frame cause that's the way the early A-v8's were . It will fit with the obvious mods to the rear of the body for the kickup . Also, there's a gentle kickup in the firewall area on a deuce . This can be delt with a few different ways , The easiest being some small ,well placed wood spacers to lift the body just a tad .

 

Brady, I keep looking at this car (i had a poster of it made) and realize thats what i really want to end up with when Iam done.

 

That is an awsome car ! Looks like a stock proportioned frame to me . Just make sure you don't end up with anywhere near that much bumpsteer .

 

How would I fix the bump steer? I am running the vega box with cross steer in my ch***is. I think Iam going to stick with that set up. Will that help out the bump steer issue?

 

Yours sounds fine with the vega setup , but the car in the photo has an insane amount of bumpsteer .

 

Ok thanks. Is the bumpsteer cause by the low ride height?

 

A lot of things can cause bumpsteer, but no it's not ride height . To put it in simple terms , It's when the suspension travel (over bumps) pushes on the pitman arm on the box , which turns the car and the steering wheel .

 

cross steer set-ups (like vega) are much less proned to bumpsteer than cars that steer to the left wheel first . Just be sure that you have a panhard bar or some type of centering device because side to side movement of the axle is what causes bump steer on a cross steer car .

 

I could go on and on but lunch is over , back to work .

 

dumb question, but why do you say this car has alot of bumpsteer? it looks like the wishbone and the steering link would be traveling close to the same arc. isn't that what you want?

 

Here's a great explanation of bumpsteer:
http://www.jalopyjournal.com/forum/showthread.php?t=325015&highlight=malcolm+bumpsteer&showall=1



Malcolm

 

bumpsteer is caused by the drag link not set-up to work with the radius rods/hairpins/wishbones.(when they dont swing on a similar arc) The car pictured has the drag link and wishbones swinging on two seperate but parallel arcs....not the same as being on the same arc. If the pitman arm was going down instead of up it would be close to correct...but as you know..you cant just flip the thing over! You dont have to worry about that with the vega box unless you mount it to far back.As long as your drag link is with-in about 4" of the tie rod you'll be fine. Parallel looks nice though...oh and it should be about 1" higher than the tie rod (if possible).
On the body...you can spread the cowl. Remove the lower firewall and drill out the 2 rivets in the front subrails then you can spread it as wide as the bottom of the tank without looking to odd, but you'll lose some of the shape that makes that cowl look so good.

 

I agree. Close enough, anyway, considering this car probably has 2 inches of travel!
Yep, BFD.

 

Good post! I had some bump steer worries too. I'm using a '32 frame with Vega box set up as cross steer. Added a pan bar (Speedway) that attaches to the left frame rail and attached to the far side of the axle about where it p***es under the right frame rail. Fiddled with this thing for days but finally got the drag link, tie rod, and pan bar somewhat all paralell and welded it up! Don't have the thing on the road yet but hope to sometime soon - and we will see how it all works!

 

Thanks for all the information guys. Time to get the grinder out.

 

I like to use about 3 quarts bumpsteer per sq ft. ???

 

tom, that is funny. that is the MOST beautiful 28/29 roadster i have EVER seen. i have a pic or two of that one saved.

 

I know it was for sale last month. I should have sold the house to buy it.

 

Yes , it has bumpsteer because the drag link is pushed back as the axle travels on the arc established by the rear wishbone mount . A lot of rodders somehow get the idea that the drag link and wishbone should be parallel . They need to go back to 8th grade and study triangles . My suggestion to anyone building a car that steers to the left wheel is BUILD A FULL SIZE MODEL FIRST . I still do this on anything unconventional .