31 replies to this topic

[Foxy]

It' s an argument I can't be arsed to have. Been done many times before.

Edited by Foxy, 19 December 2013 - 11:58 PM.

[Foxy]

PS. Pics of the bird in 43 please...

[ghand]

PS. Pics of the bird in 43 please...

Ha ha Nooooo.

[Foxy]

Go on

[ghand]

Never because you are not held by the harnesses in the appropriate positions, the loadings are all wrong. It might seem ok with a drive but have a heavy impact and you will not be restrained.

Ok I see but I would have thought if the straps are tight you are reasonably well restrained, much much better than standard. Posable we may just be splitting hairs and getting a bit technical. Not sure I would be bothered with the exact positioning as long as I had six secure tight straps holding me into the seat to stop me being thrown around in a bump. Suppose it depends how far you want to go, fit a roll cage or side air bags must admit the harness I had with cut outs felt well secure.

[ghand]

Go on

Just off to find my wide angle lens

[Boombang]

 

Never because you are not held by the harnesses in the appropriate positions, the loadings are all wrong. It might seem ok with a drive but have a heavy impact and you will not be restrained.

Ok I see but I would have thought if the straps are tight you are reasonably well restrained, much much better than standard. Posable we may just be splitting hairs and getting a bit technical. Not sure I would be bothered with the exact positioning as long as I had six secure tight straps holding me into the seat to stop me being thrown around in a bump. Suppose it depends how far you want to go, fit a roll cage or side air bags must admit the harness I had with cut outs felt well secure.

 

 

Shoulder straps can move sideways and drop below your shoulders, the crotch straps are so far away from where they should be, they will not stop you moving forwards.

 

It is very obvious when you look at that setup compared to a proper setup, have a think about potential impacts and where you naturally move.

[ghand]

 

Never because you are not held by the harnesses in the appropriate positions, the loadings are all wrong. It might seem ok with a drive but have a heavy impact and you will not be restrained.

Ok I see but I would have thought if the straps are tight you are reasonably well restrained, much much better than standard. Posable we may just be splitting hairs and getting a bit technical. Not sure I would be bothered with the exact positioning as long as I had six secure tight straps holding me into the seat to stop me being thrown around in a bump. Suppose it depends how far you want to go, fit a roll cage or side air bags must admit the harness I had with cut outs felt well secure.  

  Shoulder straps can move sideways and drop below your shoulders, the crotch straps are so far away from where they should be, they will not stop you moving forwards.   It is very obvious when you look at that setup compared to a proper setup, have a think about potential impacts and where you naturally move.

See your point with the crotch strap, if that was just over the seat it would leave a fair bit of forward travel,

[fiveoclock]

One of the major points of a harness is that in a serious accident it will hold you AND the seat in place, this is why the MSA regs say the harnesses have to be fixed to the chassis/floor with spreader plates. When I had my crash at Cadwell (90 into the tyre wall) the seat ripped out of the mountings, if I'd had the harnesses mounted to the seat the whole lot including me would have been rattling around a bit!!! Also if you have the harnesses without cut outs in an accident they can slip down your arms and break them in a hard impact.

[Bandris11]

Wooh, good to see all the comments here... As for the impacts here:

The shoulder straps can be fixed easily with a cable tie from 2 sides, so they would not move.

 

If you consider impacts please have a look the screws fixing the seat on the floor. those look ridiculous to me! 4 tiny screws hold 1 seat and 2! (out of the original 3) harness fixings... Are you sure it´s enough?

 

[JohnTurbo]

I did a trackday with harnesses and no slots...it felt..er..alright. Im a modest 5"10 btw. I immediately fitted grommets and it was so much better. Id never have gone back. For me I believe the straps would have separated in a crash. Being taller and having bolted harnesses migbt be ok, I can see that, but wrap harnesses are a no!

[ghand]

The harness kit I had came with 6 x 10mm eye bolts and spread plates. The seat has 4 much smaller bolts just threaded into the floor, suppose that says it all. It's easy to drill for eye bolts and plates, I just sealed around the hole with mastic before fitting mine.