Centre front seatbelt 110

I have a 1985 110 ex military, with a hard top, but am trying to work out how to add a front centre seatbelt
The lapbelt won't stop someone getting a nosejob from the gearlever which means some kind of shoulder strap. I purchased the exmoor trim floor mounted inertia reel type belt but am hoping someone has a better idea as the inside middle seat isn't very high (series 3 type)and the belt would come directly over the shoulder. Has anyone else sorted this problem?
Fingers crossed

Does it have a full bulkhead, to just below seat back hight?
I have a centre shoulder belt in my ex-mil S2A. The reel is on the bottom of the bulkhead with an extra fix through the tub, then the top fixing is bolted to the top of the bulkhead on a 2" upstand. This puts is just over the shoulder. It would not be OK for a tall adult but this seat is used for small people anyway so its works fine.

Don't just loop it over the top of the seat. In a crash the forces on the belt will all be in the wrong direction and force the occupant downward. You basically need a vertical strut which will brace between the reel and the top mount and take the compressive forces. It also has to resist the forward forces so is under quite a bit of bending stress. The bulkhead will offer some support in this direction but it was never designed for it! There's a reason only a lap belt was originally fitted.

Am now looking at mini bus seats with integral belts, just wondering how to fix them to the seatbox hmm

Muppetdaze said:

Am now looking at mini bus seats with integral belts, just wondering how to fix them to the seatbox hmm

Click to expand...

https://www.ebay.co.uk/itm/Rear-van...579686?hash=item2d1c046a26:g:Yn0AAOSwy11fnEtJ

The drivers and passengers seatbelts are mounted to the roll bar fitted to military 90’s.

You may be able to get a similar bracket welded on to do the same thing, but in the middle

Would the hardtop be strong enough to hang a belt from?

Any alteration from the norm may cause difficulties at the mot.

Col

I looked into this in some detail when I fitted mine. I expected to find a standard for the forces and directions on a seat belt mounting. I never found one, if anyone has found a standard with forces in do send the link. What I could find was about the bolt size and grade and the importance of chamfered edges on any doubler plates so they don't just cut through, all sensible enough. The only test I could find was the MOT which is a firm pull by the MOT tester. This got me thinking, why is it so hard to find specs for forces or strengh requirments?:
A lot of the vehicle will deform quite a lot in an accident, that's not necessarily a bad thing, it absorbs energy, what it must not do is trap or penetrate the occupants. So its OK to bend or crumple a bit. A very rigid fixing may not be better.
The belt goes around a human, it's purpose is to save the life of that human. Beyond a certain force the belt becomes the killer not the car body. The belt must do its best to keep a separation between the human going one way and the car body/dash coming the other. Its ok for the belt to stretch, mounts to bend, it may even help soften the decelleration. So it must hold, but it doesn't have to be elegant and beyond a certain force nothing more can be done.
My conclusion was, think it through, get the belts in the right place, follow the guidance on bolts and brackets, then give it a damn good pull. Taking the discussion above, I'm happy / confident in my bulkhead mounting becuase it has load spreaders, correct bolts etc, and it can take all my strength. A seat mounted belt would need to do the same, and that may not be easy because of the leverage from the seat back to the seat box.
In my case I was removing 2 fixed belts and a lap belt and fitting 3 intertia reels with shoulder belts and adding spreader plates under the fixings. I was happy that this was a safety upgrade and provided better protection.

Thanks Rob1, do you have any pictures?

Here's a couple, not sure how relevent these are to a 110 as this is an S2A.
Top pic is looking at the front of the bulkhead with the centre seat folded down. Reel is at the bottom bolted though the bulkhead, its not a mod, there was a hole there but not used. You can see the belt is raised around 2-3" and just clears the top of the seat, bear in mind the seat backs may be lower. This works for us as its used for a 11yr old.
The lower pic is how the rell attaches, this seems to be a proper bracket , it is on the rear of the bulkhead and has the seat belt bolt in then another bolt down to a spreader under the floor.

A 3 point belt fitted like that has got to be safer than a laptop. Lap belts are known to cause awful injuries.

I would rather use that 3 point rob put up tbh. Imo a lap belt is just to stop you falling off the seat rather than save your life in a crash