Rear suspension arms, bannana

[Gunzel]

Anyone know someone who can straighten the rear arms?

[James Brown]

they should be bent!

[Porsche84]

Much easier to replace with used ones, they are pretty cheap

[Gunzel]

Can either of you answer the question or not?

[winders]

Originally Posted by Gunzel

Can either of you answer the question or not?

That attitude is not going to get you any help!

Scott

[Eric_Shea]

Answer - No.

Question - When they are so inexpensive in the used market; why?

[Porsche84]

Porsche has a special tool to check the correct alignment of trailing arms. I have never seen anyone who has one, it is just shown in the early manuals. The banana arms have complex geometry. They need to manage both camber and toe, so straightening really means bending in multiple planes at the same time. If you are talking about 911 arms, used ones are available for $150 or so. If it is for a 930, more expensive. I have one 911 arm (don't remember if it is L or R) and a pair of 930 arms if you want to consider buying a replacement.

[70SATMan]

Originally Posted by Gunzel

Can either of you answer the question or not?

What car?
What year?
What material type?
Europe?
US?
Where exactly are you?
Do you have a budget?
What's your expectation for the quality of the work? Daily driver, repair/flip, concourse restoration?

How can anyone give you a reasonable answer when your question was deficient?

I'm sure I could straighten it. I have a pretty big sledge at home.

[tadd]

My guess is that its for real RSR parts. Gunzel tends to populate those threads.

To the topic, you might want to check with Chris on the early S board. He pulled up stakes here after being run off (after sharing some really amazing metalurgy info) for being called stupid. Anyways, he has cut down LWB to SWB and has a jig. Has told me that alot of the SWB 'handeling issues' (read ballast weights) are really flexing in the early banannas. I think Im recalling that right.

t

[wayner]

How about these guys?

Aase Sales — 911 RSR Trailing Arms with Hubs and New bearings

If it is the company I read about, they reproduce but also rework RS/RSR arms.
(I'm not positive but I think it was the company featured in a british mag recently).

Then again, it might have been this company, I can't be sure.
http://www.twinsparkracing.com/products.html

[Gunzel]

Jerry

Right on all counts. I have the special tool to check the arms. If you ever need one checked I will be glad to check it for you. My arm is for my 73 RSR so buying a replacement is expensive so I thought someone might be set up to correct bent arms. Thanks for the reply.
Mike Curnow

Originally Posted by Porsche84

Porsche has a special tool to check the correct alignment of trailing arms. I have never seen anyone who has one, it is just shown in the early manuals. The banana arms have complex geometry. They need to manage both camber and toe, so straightening really means bending in multiple planes at the same time. If you are talking about 911 arms, used ones are available for $150 or so. If it is for a 930, more expensive. I have one 911 arm (don't remember if it is L or R) and a pair of 930 arms if you want to consider buying a replacement.

[Gunzel]

Wayner
A great suggestion, I didn't realize Aase was making new ones. Since they make new ones maybe they can straighten an old one? I will contact them.

Thanks

Mike

[Gunzel]

Originally Posted by tadd

My guess is that its for real RSR parts. Gunzel tends to populate those threads.

To the topic, you might want to check with Chris on the early S board. He pulled up stakes here after being run off (after sharing some really amazing metalurgy info) for being called stupid. Anyways, he has cut down LWB to SWB and has a jig. Has told me that alot of the SWB 'handeling issues' (read ballast weights) are really flexing in the early banannas. I think Im recalling that right.

t

Tadd
You are correct, its an RSR Banana. Chris may be a possibility, I think he was threatening to make arms at one point. I never heard if he got into it or not. I will check it out. Thanks.

Mike

[Schmierung]

Mike,
Perhaps you could try a larger specialty machine shop ( aerospace, aircraft, military inclined) that has the skill and experience press "bumping" of expensive menbers into dimensional tolerance. NASA uses this when analysis proves it.
Don
PS: How did you make out with that RSR crankshaft I sold you many years ago?