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Old 10-30-2018, 03:16 PM
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Reversed Steering Arms - 1955 Chevy

I am on a quest to find bolt-on (if possible) steering arms for a 1955 Chevy.



Here's the deal. I am doing a lot of surgery to the front end of this car which is going to be something of a clip hung on a 2x3 rectangle frame. I am removing a good portion of the center crossmember however I am keeping enough of it so that I can use the a-arms in their normal positions. I am also going with a manual r&p mounted in front of the crossmember so I need steering arms that are longer than the stock units. I know from another hot rodder that this can be done; however, with the stock units there is not enough r&p "throw" and the turning radius is cut back.


If anyone knows of an aftermarket arm or an OEM that would work, I would appreciate the information.

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Old 10-30-2018, 06:03 PM
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It sounds to me like you have no idea of the complexity of an IFS system. My best advice is to procure and read a book by Carroll Smith called Tune to Win. Following the teachings of the honorable Mr. Smith allowed me to construct an IFS from scratch that exhibited zero bump steer in 9" of travel, measured with a dial indicator.
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Old 10-30-2018, 06:37 PM
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Okay- but I’m still on my quest.
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Old 10-30-2018, 08:10 PM
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Okay- but Im still on my quest.
Until you understand the physics involved, you are doomed to fail. I have not lived to be 76 years old by doing stupid stuff.
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Old 10-30-2018, 09:09 PM
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Wow - I think that might be a little strong since it's already been done and other rodders have been successful with it. I am just looking for some longer steering arms to let the R&P work better.
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Old 10-31-2018, 08:06 AM
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Quote:
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Until you understand the physics involved, you are doomed to fail. I have not lived to be 76 years old by doing stupid stuff.
Youre right tech!
If he understood the physics hed know longer ones would create a bigger turning radius.
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Old 10-31-2018, 09:38 AM
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The issue here isn't the length of the steering arms by themselves. It's the whole steering geometry over the entire range of suspension motion and turning angles. The location of the inboard tie rod pivots on the rack need to be located precisely to control bump steer. The length of the steering arms and the location of the outer tie rod pivot points is critical to maintaining ackerman steering geometry. The design point of the caster and camber impact this as well. The parts and geometry all need to play together as a system.
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Old 10-31-2018, 12:39 PM
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Chas, nobody here is trying to be mean to you. We are honestly trying to help you, but you must also help yourself. Buy Tune to Win, read it through several times and make the paper dolls that Carroll shows in the back of the book. Work the suspension through bump and droop with heavy construction paper and stick pins to get the geometry right on paper before you ever commit to making parts from steel.
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Old 10-31-2018, 12:41 PM
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So basically no one has any input on the original question so far. I was hoping that someone might have an idea of what arms would fit possibly.
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Old 10-31-2018, 12:57 PM
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Quote:
Originally Posted by chasracer View Post
So basically no one has any input on the original question so far. I was hoping that someone might have an idea of what arms would fit possibly.

How could anyone possibly know what you need with no measurements and no forethought?


Heed the advice given. If you've never experienced bumpsteer, a little bump in the road can put you in the next lane over into oncoming traffic in a hurry.



There are alot more people on the road then you and their safety should also be one of your concerns. There are also a lot of people on the internet that claim the goofy crap they bolted together works amazing.


These guys are giving you solid advice.
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Old 10-31-2018, 01:02 PM
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Quote:
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So basically no one has any input on the original question so far. I was hoping that someone might have an idea of what arms would fit possibly.
Chas, nobody has the answer for you because this is likely some urban legend that got passed from one hot rodder to another and was improved with each recipient. It's sort of like "The older I get, the faster I was". If this was something that worked well, it would be all over the internet and everyone would be doing it.
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Old 10-31-2018, 03:08 PM
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Like this urban legend?


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Old 10-31-2018, 03:14 PM
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Interesting - it allows me to provide url of photo but doesn't display it? Oh well -



Anyway, once again this has all been done before and I was just hoping someone had some information. Sorry I bothered anyone.
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Old 10-31-2018, 03:14 PM
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Well, apparently you aren't the only one having difficulty posting that photo...

Here's the link, anyway:

http://rutherfordms.com/photos/rever...ring%20arm.jpg

Look, no one has suggested that this cannot be done. All we are saying is that from your question, we don't get a feeling that you fully understand the amount of engineering that goes into such a change. If you do understand that then we apologize. From the link, it appears that you already have the answer to your question anyway.
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Old 10-31-2018, 03:38 PM
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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.



Thanks for reply.
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