seat rail

[axle]

Hi Folks

My Chasiss is completes and I am about to paint it. Can any body tell me if I need a solid structure like a pair of square tubes welded across so the seat railing can be mounted on top it, as the flooring on its own will not be sufficient. What has every one else done or thinks?

[Bonzo]

I can't remember the exact IVA regs for seat mounts.

I think you are allowed to bolt directly to the floor provided you place some compensation plates on the underside of the floor.
Minimum of 100mm X 100mm is lurking in the back of my mind.

Personally. I would fix some 40mm X 3mm strip steel under the seat runners.

Mr IVA man will most likely be happy to see the compensation plates too.

If you need to gain a little height, then some square tube might be more suitable.

[londonsean69]

I welded in lengths of 25x25x1.6mm ERW. These have been drilled through to suit the seats I have.

I will also use some spreader plates, but probably only 50x50. I also have photos of the rail being fully welded in, this will be for Mr IVA to prove there is a decent anchorage

Hope that helps

[axle]

Hi everyone
Thanks for all your input, Sean would you be so kind to post these pictures on the next thread please?

[ozzy1]

Westfield weld in some chassis plates to bolt the seats to as the floor is riveted on,i think if you weld in your floor then you dont need to do this.I would use some 50mmx3 or 4mm if i was riveting the floor in for safety sake anyway.
HandyAndy maybe the best person to ask about this as he now makes the chassis for sale.

[londonsean69]

Originally Posted by axle

Hi everyone
Thanks for all your input, Sean would you be so kind to post these pictures on the next thread please?

I'll have to wait until I get home, but there's not a lot to see.

It's 25x25 ERW, welded between the outer frame rails and the transmission tunnel. MAke sure you cap the gap between the 25x25 for the support, and the 19x19 on the transmission tunnel.
Obviously, they are installed flat on the build table, to present a flush floor.

You need to ensure that the spacing of the rails, and the holes in them, tie up with your chosen seat.
The bolt holes on the bottoms of my seats are not spaced out square though
So the holes are in different places on the front and rear rails.

On a side note, I am also using A4 caphead stainless for the bolts. They are in a very exposed location, both for impact (think speed humps) and road grime.
The rounded cap heads will hopefully not dig in should I hit the top of a hump, and it also means they woun't be rounded off like a normal bolt head.
A4 stainless is for marine applications, so should resist most of the crud flung up at it, and is of a comparable strength to grade 8.8, so should keep Mr IVA happy

[AshG]

i did this

think it was 40x3 or 40x4 from memory

[londonsean69]

Mine is the same as AshG's, it's just I happened to have plenty of 25x25 box, and have run out of 40x3.

Either will be fine.

[axle]

Thanks you all been very help full, as we say a picture speaks 1000 words.