Nik-link suspension

iamuwere · Jul 18, 2004

Radical cars (sports racer constructors) claim a patented suspension design they call the Nik-link. This design supposedly eliminated the need for ARB's via some complex linkages.

I have no Radicals locally (everything else though) and have been unable to find some clear pictures or design info. I haven't found patent or SAE info either.

In a class that does not allow ANY ARB's, I think some similar design could be useful.

thanks,
jim

GregLocock · Jul 18, 2004

Hard to tell, but since they make a least one car with both Nik Links and ARBs I don't get the impression it replaces ARBs.

Cheers

Greg Locock

pintojoe · Jul 25, 2004

The nik-link uses a bell crank to compress the top of the coil over as well as the coil over compressing from the bottom a-arm. This gives more shock travel to control the spring they say. The ARB is a tubular bar bent downward at one end and is mounted across the chassis connected to the bell cranks on either side. When the suspension moves the bar bends (bows) causing roll resistance.

ubrben · Jul 27, 2004

This is what I hate about the whole patenting system. The 'nik link' is identical in concept to the front suspension system Andrew Thorby designed for the early 90s Van Diemen Sports 200 car. He subsequently used the design on the Lister Storm LMP.

Is it possible to contest patents after the fact by demonstrating that the patentees did not independently come up with the idea?

Ben

patprimmer · Jul 27, 2004

Yes it is possible to challenge a patent on the grounds of existing knowledge or examples of the art before the patent was applied for. To stand, a patent must meet criteria as to the validity of it innovation and invention.

Regards
pat pprimmer@acay.com.au
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LMP900 · Aug 4, 2004

I did indeed use it on the Van Diemen and the Lister. There are a number of benefits, but on the front of the Van Diemen (and presumably the Radical) it allowed the good motion ratio of a pushrod linkage with the chassis simplicity of a simple double A-arm/coilover layout. Didn't realise it was patentable though....

Andy

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Nik-link suspension

iamuwere

Automotive

GregLocock

Automotive

pintojoe

Automotive

ubrben

Automotive

patprimmer

New member

LMP900

Automotive

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