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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering> Reversed Steering Arms - 1955 Chevy
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Topic Review (Newest First)
10-31-2018 09:26 PM
enjenjo If the steering arms will bolt on backwards so they face the front, you can bend them to get the right Ackerman angle. They can also be shortened by a qualified welder. You can also contact UB machine UB Machine Inc. They have made custom steering arms for me in the past at a very reasonable price.

But as the others have mentioned, make sure the angles are right to reduce bump steer, and that the rack effective length matches the suspension geometry.
10-31-2018 09:17 PM
enjenjo
Quote:
Originally Posted by ericnova72 View Post
Maybe 1964-72 Chevelle arms, which are front steer, if the bolt spacing is the same??

I know '64-72 Chevelle and '68-74 Nova/'67-69 Camaro the spindle is the same, the only difference is the rear steer or front steer arms, which unbolt from the spindle.

There is another difference, the rear steer arms are angled much lower than the front steer arms.
10-31-2018 09:14 PM
enjenjo
Quote:
Originally Posted by joe_padavano View Post
That's the one thing you CANNOT do.

The steering arms are angled to provide the proper ackerman angles when turning. Rear steer geometry typically has the outboard tie rod end ball centerline further outboard than the kingpin axis (the line through the control arm ball joints), so the steering arms are angled outward. Front steer requires the tie rod ball joints to be INBOARD of the kingpin axis, so the steering arms are angled inward.

You have this exactly backwards. Rear steer arms angle in and front steer arms angle out
10-31-2018 07:31 PM
RWENUTS
Quote:
Originally Posted by chasracer View Post
Ha-ha - nice detective work but that's my website.
Oops!
Thought I was gonna get a hero cookie!
Onward and downward.

Have you considered a front clip swap. To a front steer like a 75 nova. Similar front stuff like your 55.

Just a thought!
10-31-2018 07:08 PM
chasracer
Quote:
Originally Posted by ericnova72 View Post
Only reason I mentioned that specific arm is that it derives from the Tri-5 suspension, the A body is basically the next generation of it.

Of course everything needs to be checked and measured.



Thank you for the information - I appreciate it. I'm thinking that the steering arms in the photo are custom units that the owner had built. I already talked with one fellow that attempted the stock arms reversed. Said it worked just fine except for the lack of turning radius. The R&P simply didn't have enough "throw" left to turn the wheels completely. Moving the rack back is one solution but you run out of room if you are trying to stay with the stock a-arm locations.


I'll do some checking on the A-Body stuff.
10-31-2018 07:02 PM
chasracer
Quote:
Originally Posted by RWENUTS View Post
Following up on the pic I found this.
He might tell you where the arms came from.
Project Details Rutherford Motorsports

Ha-ha - nice detective work but that's my website.
10-31-2018 06:02 PM
ericnova72 Only reason I mentioned that specific arm is that it derives from the Tri-5 suspension, the A body is basically the next generation of it.

Of course everything needs to be checked and measured.
10-31-2018 05:41 PM
joe_padavano
Quote:
Originally Posted by ericnova72 View Post
Maybe 1964-72 Chevelle arms, which are front steer, if the bolt spacing is the same??

I know '64-72 Chevelle and '68-74 Nova/'67-69 Camaro the spindle is the same, the only difference is the rear steer or front steer arms, which unbolt from the spindle.
And this is why people were so negative to the OP's original question.

You can't just bolt random steering arms onto spindles. You have to figure out the correct length, angle, and position for the car to steer properly. That means you have to plot the steering and suspension motion in three dimensions to properly select the steering arm geometry.
10-31-2018 05:31 PM
RWENUTS Following up on the pic I found this.
He might tell you where the arms came from.
Project Details – Rutherford Motorsports
10-31-2018 05:30 PM
ericnova72 Maybe 1964-72 Chevelle arms, which are front steer, if the bolt spacing is the same??

I know '64-72 Chevelle and '68-74 Nova/'67-69 Camaro the spindle is the same, the only difference is the rear steer or front steer arms, which unbolt from the spindle.
10-31-2018 05:17 PM
joe_padavano
Quote:
Originally Posted by ericnova72 View Post
The steering arms unbolt from the spindle, and the arms can be reversed.

Still doesn't fix the possible bump steer issue.
Never mind bump steer. Again, it's the ackerman steering angles that are the most important. If you simply swap the arms around, the front tires will toe in on turns and scrub.

10-31-2018 05:11 PM
ericnova72 The steering arms unbolt from the spindle, and the arms can be reversed.

Still doesn't fix the possible bump steer issue.
10-31-2018 05:08 PM
ericnova72 Are you sure it was a stock spindle??
Picture is joe's link doesn't look like a stock spindle at all, unless I just can't see enough of it.

One thing is true that has been said....a longer steering are is going to increase turning radius, not decrease it.
10-31-2018 04:57 PM
joe_padavano
Quote:
Originally Posted by RWENUTS View Post

Maybe you could flip the steering knuckles side to side to get the arms in front.
That's the one thing you CANNOT do.

The steering arms are angled to provide the proper ackerman angles when turning. Rear steer geometry typically has the outboard tie rod end ball centerline further outboard than the kingpin axis (the line through the control arm ball joints), so the steering arms are angled outward. Front steer requires the tie rod ball joints to be INBOARD of the kingpin axis, so the steering arms are angled inward.
10-31-2018 04:53 PM
RWENUTS [QUOTE=chasracer;4631453]Well - that's the question. I still don't know if those arms are commercial or if they were custom made for the owner. And I certainly understand people trying to help with their input, but telling me I am going to fail up front is like telling the first guy that made a wheel that it won't work - unless you have performed the same exercise, you really don't know if it will or not.


I have been working on autos now for a bit over 54 years. I have built race cars from the ground up and I have worked in the race car industry. I have worked in body shops, car shops and independently - I might just know a thing or two about steering systems. I don't expect anyone to know that information but just asking a basic question seems to be a tough act around here. quote

I’d say they’re custom made from the pic.
Maybe you could flip the steering knuckles side to side to get the arms in front.
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