m8kwr
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| posted on 29/6/09 at 09:36 AM |
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reversed lower wishbone
What is a "reversed lower wishbone"?
Just want to make sure i am not missing the point, or thinking it is something that it isn't.
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eccsmk
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| posted on 29/6/09 at 09:59 AM |
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erm a wishbone on the wrong way round?? 
where did you here the term??
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m8kwr
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| posted on 29/6/09 at 10:29 AM |
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in this setence, well I found it looking at old F1 car back in the 60's.
The first F3 Lotus was the 31 which was basically a minor rework of the 1962 F Junior 22. The chassis was a spaceframe of round and square tubing with
a central bulkhead doubling as the dashboard. Front suspension is via unequal length double wishbones and outboard springs/dampers and an anti-roll
bar. At the rear it used a reversed lower wishbone and a top link, twin parallel radius rods with outboard springs and dampers and an anti-roll
bar. Magnesium uprights were used at the rear with proprietary units at the front. The 13 inch wheels were cast magnesium although pressed steel Lotus
Elan types were found on early models. A Hewland Mk6 gearbox was used, again earlier models were offered with a modified VW or Renault box.
Wheelbase 90 ins.
Track: front 47.5 ins. rear 50 ins.
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chrisg
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| posted on 29/6/09 at 10:53 AM |
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It's where the widest part of the wishbone is fixed to the upright, the wishbone narrows to a single pivot on the chassis.
Some method of wheel control is required, usually a forward radius bar (or bars) fitted from the upright to the side of the chassis.
Most of the 60's Loti used it - I'll see if I can find a pic.
Cheers
Chris 
[Edited on 29/6/09 by chrisg]
Note to all: I really don't know when to leave well alone. I tried to get clever with the mods, then when they gave me a lifeline to see the
error of my ways, I tried to incite more trouble via u2u. So now I'm banned, never to return again. They should have done it years ago!
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britishtrident
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| posted on 29/6/09 at 10:56 AM |
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It was used on the rear 1960s single seaters --- last F1 car to use it was probably the Lotus 49B
It was exactly a wishbone (usually a lower wishbone) fitted the wrong way round --- normally the V of a wishbone is mounted with the pointed end
end at the wheel. Starting with the Lotus 24 Chapman put the pointed end at the chassis.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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britishtrident
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| posted on 29/6/09 at 11:03 AM |
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It can just be seen in these photos --- lower rear nb two fore-aft links were also fitted to locate the wheel under power and braking
http://www.motorbase.com/uploads/2005/12/18/fs_2520.jpg
http://www.ddavid.com/formula1/images/lotus25f.jpg
http://www.ddavid.com/formula1/images/lotus25b.jpg
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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m8kwr
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| posted on 29/6/09 at 11:09 AM |
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Thanks for the pictures.
Please correct me if i'm wrong, but the rear wishbone looks like (apart from it not been 1 complete unit), but like a westfield rear wishbone.
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m8kwr
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| posted on 29/6/09 at 11:12 AM |
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This picture is a little closer
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MikeRJ
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| posted on 29/6/09 at 11:23 AM |
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quote:
Originally posted by m8kwr
Thanks for the pictures.
Please correct me if i'm wrong, but the rear wishbone looks like (apart from it not been 1 complete unit), but like a westfield rear wishbone.
The Westfield rear "wishbone" is not wishbone shaped at all, but more of a 'Z' which is attached by two points to the chassis
and two points to the upright, so it's not a reversed wishbone like the old F1 cars.
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britishtrident
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| posted on 29/6/09 at 06:08 PM |
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Westfield wishbone was almost a straight copy of the Lotus Elan (RWD)
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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