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Nik-link suspension

Nik-link suspension

Nik-link suspension

(OP)
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

RE: Nik-link suspension

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

RE: Nik-link suspension

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.

RE: Nik-link suspension

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

RE: Nik-link suspension

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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RE: Nik-link suspension

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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