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+--- Thread: Fiberglass bumpers (/showthread.php?tid=12902)
Fiberglass bumpers - AgtX1 - 01-08-2021
Has anyone here had any experience reinforcing fiberglass bumpers? The paint is cracking on mine & it isn't very rigid. Looking for tips, do you just add new fiberglass all over or just certain points to add strength?
Thanks.
Fiberglass bumpers - sprinter2012 - 01-08-2021
Actually laying up the fibreglass is easy, you just apply some resin, wait until it goes tacky, stick on a layer of fibreglass and then apply more resin over the top!
As for which areas to reinforce, any corners that support large areas of the bumper will be flex points. I would just wiggle it about, find out where the weak spots are and just reinforce those points, if you do the whole thing it will make it mega stiff so if you bump anything it will just break all the mounting holes.
Also, try to keep the bumper in the same shape it would be when it's on the car, so lay it on it's front to do the resin, but stand it upright while it dries. Otherwise it will go stiff in the wrong shape and you'll probably crack it trying to put it back on!
Fiberglass bumpers - AgtX1 - 02-08-2021
Some good advice, thanks!
Fiberglass bumpers - wullie_trd - 03-08-2021
Could always fill the bumper with expanding foam
Fiberglass bumpers - AgtX1 - 03-08-2021
yeah I read that, so was going to strengthen & then foam it, shave it into shape, should absorb shocks better.
Fiberglass bumpers - wullie_trd - 03-08-2021
Yeh man stop it breaking into a million bits if you hit a rabbit. Talking from experience lol
Fiberglass bumpers - sprinter2012 - 03-08-2021
I tried filling the centre bar on my Legana with expanding foam. But I made the mistake of covering the back of it in tape, which stopped the foam curing and it just sat in the bottom in a sticky mess. Lol
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Fiberglass bumpers - Leg-Kev - 09-08-2021
expanding foam filler and then paint the back of the foam with resin to seal it when you are finished