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Author: Subject: Removable underside bodywork fastener?
cloudy

posted on 21/8/15 at 05:41 PM Reply With Quote
Removable underside bodywork fastener?

Looking for a way of attaching carbon/grp bodywork on the underside of a car. Needs to be removable, preferably flush and not allow water ingress through to chassis rails/aluminium flooring. Can use rivnuts and CSK's but expect that might work loose over time...




Any ideas LCB?





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mark chandler

posted on 21/8/15 at 06:03 PM Reply With Quote
Form a U that the carbon slots into then the fasteners are only stopping it pulling out, line the U with rubber and you have a waterproof seal.

You would need to joddle the floor to keep it flush.

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loggyboy

posted on 21/8/15 at 06:16 PM Reply With Quote
If it were me I would do rivnuts counter sunk into floor thickness, then a strip of 25mm self adehsivr neoprene foam yhen bolt the carbon up with dome head allen bolts with thread lock.

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cloudy

posted on 21/8/15 at 07:15 PM Reply With Quote
Thanks both,

mark the channeling idea would be neat, though not sure if I've got space to get a good structural floor bond, plus a gap + clamping area...
I guess the neoprene idea from loggy would also help avoid chafing with any movement. Perhaps some countsunk screws into a sealed end rivnut?

These get around the vibration issue (for a price!)
http://www.specialty-fasteners.co.uk/products/quick-release-fasteners/livelock-panel-fasteners


EDIT:
aha!
http://www.furyrebuild.co.uk/stainless-rubber-backed-sprung-washers/




[Edited on 21/8/15 by cloudy]





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