BODY ROLL

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Rod
Posts: 108
Joined: Sun Nov 24, 2019 9:44 am
Location: New Zealand

Re: BODY ROLL

Post by Rod » Thu Sep 05, 2024 2:20 am

Those items you show Peter, are actually more in the nature of 'auxiliary (or helper) springs' which is why they are nice and progressive and altogether a much better idea than a straight out semi-hard stop.

In fact, if you look under some models of Transit (and no doubt other vans), you will see a single leaf spring and a substantial item, just like the Escort one pictured, poised on the chassis (or frame) rail with a minimum amount of gap between them.

As an aside, we often had the argument about whether they were bump stops or auxiliary/helper springs with inspectors at our MoT equivalent inspections, because if they were a bump stop, and were touching, or nearly touching the spring it was a 'fail' because suspension travel was limited, whereas if they were an auxiliary spring it was 'pass' because that was design intent. The determining factor was whether they were hollow or not.

Aeon rubber specialised in the things,in a myriad of shapes and sizes and 'stiffness', and supplied to assemblers.

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peter_winney
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Re: BODY ROLL

Post by peter_winney » Thu Sep 05, 2024 5:29 pm

In the 1980s a club member used to market "spring aids" which were had a pointy top which just touched the chassis. Members including myself never had trouble with the MoT because of them. But they were not hollow, I know that because my spare pair got trashed by tools in my toolbox.

I once used one of them to "fish" a front spring to support the broken ends of the main leaf to get me home from the the south coast of France. Covered about 1000 miles like that!
Member since July 1972
Reconnaissance is seldom wasted

Rod
Posts: 108
Joined: Sun Nov 24, 2019 9:44 am
Location: New Zealand

Re: BODY ROLL

Post by Rod » Fri Sep 06, 2024 9:27 am

Yeah, is it a bump stop or an auxiliary spring only became an WoF (our 'MoT') issue when excessively lowering cars became a fashion here in NZ.
"car enthusiasts", aka boy racers, would drop the cars right down on the bump stops by heating or cutting turns off the suspension strut springs if they were cheap, or fitting adjustable spring cups if they were well heeled, which would effectively remove any suspension action from the vehicle with predictable and sometimes fatal results.

DaiBrace
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Location: Anglesey

Re: BODY ROLL

Post by DaiBrace » Sat Sep 07, 2024 8:18 pm

Fitting new bushes to the springs reduced the body roll by a fair bit.

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peter_winney
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Re: BODY ROLL

Post by peter_winney » Sun Sep 08, 2024 10:29 am

DaiBrace wrote:
Sat Sep 07, 2024 8:18 pm
Fitting new bushes to the springs reduced the body roll by a fair bit.
Good news.
A job I need to do
Member since July 1972
Reconnaissance is seldom wasted

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