GRP seat repair
Author
Discussion

FlossyThePig

4,138 posts

265 months

Tuesday 28th August 2012
quotequote all
Mr MXT said:
Your links are incorrect "...." does not form a valid URL.

rhinochopig

17,932 posts

220 months

Tuesday 28th August 2012
quotequote all
One thing to consider is this: In a crash how secure will your seats be?

If one bolt has failed, the first thing I'd be doing is checking the others ASAP rather than considering repair, as the mass seen by the seat in a crash will be way beyond what Fat Rob can impart on it.

Just a thought.

Mr MXT

Original Poster:

7,774 posts

305 months

Tuesday 28th August 2012
quotequote all
Fair point, might just invest in a new set.

FlossyThePig

4,138 posts

265 months

Tuesday 28th August 2012
quotequote all
You need something like this to replace the the captive nut then use real gassfibre and resin, not "hairy" paste. I would use cloth rather than chopped strand.

The Black Flash

13,735 posts

220 months

Tuesday 28th August 2012
quotequote all
rhinochopig said:
One thing to consider is this: In a crash how secure will your seats be?

If one bolt has failed, the first thing I'd be doing is checking the others ASAP rather than considering repair, as the mass seen by the seat in a crash will be way beyond what Fat Rob can impart on it.

Just a thought.
As I understand it, in a crash the seatbelt holds you and the seat in place. I don't think the seat mountings are relied on in any structural way.

rhinochopig

17,932 posts

220 months

Tuesday 28th August 2012
quotequote all
The Black Flash said:
rhinochopig said:
One thing to consider is this: In a crash how secure will your seats be?

If one bolt has failed, the first thing I'd be doing is checking the others ASAP rather than considering repair, as the mass seen by the seat in a crash will be way beyond what Fat Rob can impart on it.

Just a thought.
As I understand it, in a crash the seatbelt holds you and the seat in place. I don't think the seat mountings are relied on in any structural way.
"Ari was one of the top drivers in the world, and he was on his way to winning the 1985 World Rally championship. However, in Argentina that year, he hit a washout at high speed and was nearly killed in the crash. His co-driver had minor injuries, but Ari was out of rallying for over a year because his seat mounts broke during the roll, and he bounced around inside the car."

Obviously KCs don't driven as hard, but they do get driven much harder than most road cars.

The Black Flash

13,735 posts

220 months

Wednesday 29th August 2012
quotequote all
Hmm, I've been reading around prompted by this thread. Holding the seat, belt mounts and chassis all together with the roll cage seems to be a good thing in a tin-top, so the seat mounts are important. But I'm not sure how this squares with the use of foam bag seats in single seaters for example, where there's no mount from the seat to the car at all. I suspect that the amount of space in the cockpit is the important factor here. There's room to flail around a bit in a rally car, less so in a formula job.

Personally, in my kit, I've bolted nice big 3mm angle steel brackets to the chassis, and bolted the seat through that, rather than just whapping it through the ally floor like many people do. But it's ultimately the harness I'll be putting my trust in.