Author Topic: Back suspension  (Read 3159 times)

Gary Baxter

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Back suspension
« on: November 17, 2016, 06:02:47 »
I wonder if someone would be so kind as to give me some advice. I am in the process of performing a body-off restoration on my 280sl and after receiving the car back from the spray painters, I fitted the differential, springs and shock absorbers then put the four wheels on after completing the front suspension and steering. When I removed the jack stands and the car was resting on the wheels, the back wheels are facing in at the bottom quite markedly; pushing the car made no difference.

Have I made a mistake somewhere?

Cees Klumper

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Re: Back suspension
« Reply #1 on: November 17, 2016, 06:41:43 »
Someone else asked this same question a few weeks ago; chances are that all is well and you just need to drive the car a bit for the rear wheels to straighten out. I suppose if the floor is slippery enough (and you're strong enough), you could even pull the wheels straight by hand as the car is sitting.
Cees Klumper
1969 Mercedes 280 SL automatic
1968 Ford Mustang 302 V8
1961 Alfa Romeo Giulietta Sprint Coupe 1600
1962 FIAT 1500S OSCA convertible
1972 Lancia Fulvia Coupe 1.3
1983 Porsche 944 2.5
1990 Ford Bronco II

cfm65@me.com

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Re: Back suspension
« Reply #2 on: November 17, 2016, 17:13:36 »
Gary,
The suspension is designed to carry the full weight of the car. If you are busy with a full restoration, the car will not settle to its normal stance untill all the components are fitted, including fuel, oil, etc. Therefor the rear axle will not settle untill the restoration is complete and the car driven for a few meters.
In any event, the Pagoda is so designed that rear camber should be set at about 1 to 2 degrees +(IIRC). Which means that it should stand with the rear wheels slightly tucked in, at the bottom, ie positive camber. It is very little and hardly visable. A squatting rear end is called negative camber and will impede handling.
Set it up as best you can, drive it a few 100km and reset.
Regards
Chris
28 Ford Model A Pickup
29 Chevy Phaeton
67 E Type FHC
67 250SL 5 speed
83 911SC
2015 VW T5 California Pop Top

Gary Baxter

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Re: Back suspension
« Reply #3 on: November 18, 2016, 01:40:43 »
Thank you for your answer Cees, most helpful.

Gary Baxter

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Re: Back suspension
« Reply #4 on: November 18, 2016, 01:42:48 »
Thank you for your answer Chris and the camber information, much appreciated.

cfm65@me.com

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Re: Back suspension
« Reply #5 on: November 18, 2016, 11:30:35 »
You'r welcome ;)
28 Ford Model A Pickup
29 Chevy Phaeton
67 E Type FHC
67 250SL 5 speed
83 911SC
2015 VW T5 California Pop Top