What are these for??

[Bcone1381]

Good discussion - and thanks to the guy who re-launched this old thread!!

I've got a 5-point harness with a centre rotary release mechanism, a bit like the link above. Any thoughts on how to secure the crotch piece to the seat frame? At the moment, I'll just put a webbing loop back under the seat pan to the rear tube of the seat frame... but if anyone's actually installed this type of harness, can you send us a pic?

Thanks,

James

Consider attaching all belts to the airframe, and none to the seat. The Patrol and I think the four place has a tube that runs span wise under the front seats that the seats are attached to. I wrapped my crotch strap to that tube using a Schroth SR LV4 two bar slide using Schroth's instructions for attaching to tubes. Cheap, light, removable, adjustable, works good, last a long time, never breaks.

[James]

Yes, I thought of that Brooks - but as you move the seat forward and back, the length of the crotch strap will change. The lap belts and the shoulder belts will be mounted to airframe hardpoints. The crotch piece is mainly to stop the other belts from riding up.

James

[jaredyates]

All of my front seat belts are attached to the airframe. When the seat moves forward and back, the lap belts and crotch straps have to be adjusted. If a person is sufficiently different than the last occupant to require a seat movement, they are almost certainly also sufficiently different to require a belt adjustment too. It's no biggie, it's just something we do.

[Nev]

The primary locking mechanism is activated when the webbing is quickly pulled from the reel. If you jerk the shoulder harness, it locks.

This is what I’m looking for I think Brooks - I initially thought we need an inertia reel that locks on deceleration, but maybe that would be activated by turbulence and become an issue. Perhaps having it activated when the webbing is pulled quickly is the key. I recall some earlier model cars where this was problematic because the reels were way too sensitive and even pulling the belt out slowly would activate it.

[Bcone1381]

I've never had it lock up in turbulence. I rarely had one lock when I moved my upper body forward quickly....not never, but very rarely. Its not like those sensitive ones in cars that recall would be a nuisance.

[JimParker256]

Early on, that was an issue with the automotive inertia reels, but it's pretty well been solved by now. I can't remember the last time I experienced the "locked belt" phenomenon in a post-2010 auto.