harness bar for shoulder belts?

[Synner]

Yeah I will fabricate one, aint no way I'm paying the speedware price. I suppose running it that way would be a lot simpler than upholstery work.

[600hp-lpe]

Originally Posted by Synner

Anyone seen anything on the 5th point mounting or requirements? I would like to modify the stock seats for the 5th point but want to do it right the first time.

I don't have the desire to swap out seats on race weekends and want to retain factory appearance/airbags.

I used a 6 point seatbelt - the 2 sub straps I ordered seperately from JEGS to get longer straps.

Mounted them using the 2 rear seat bolts. ran the straps between the back cushion and bottom cushion (so you sit on the straps).

Otherwise, you need a hole through the seat. they can't come in from the front of the bottom cushion, as it defeats the purpose of the sub strap.

[Avalnch]

Originally Posted by cornerspeed92

Yes it is the Speedware setup,like i say totally bolt in.Hope these pics help.Since i was on my SD card thought i would throw in a gratuitous pic of the sticker i had made for my new helmet

Great sticker

Thanks for the pics. Shows exactly what I need to know.

[toehead93]

Originally Posted by TBone

Gentlemen,

Right or wrong I have been using the Speedware bar for the last year with the Schroth Rally Cross ASM straps and I love them. They keep me in place while at the track and then when not needed I just wrap them around the back of the seat and use the stock three point. No need for the tank plate because they bolt right up to where the stock seat belts attach to for the bottom straps. Gotta love the color too,.



I would love to have a 5 or 6 point but I am not cutting up my seat so this was the best option, at least for this car.

T.

I like this setup for the most affordable option but I am thinning the Schroth Profi II with ASM might be better although a little more expensive because you can upgrade them to 5 or 6 point in the future. They are supposed to work with Hans which I doubt I will ever have. But honestly I need to research this more because having ASM and upgrading to the 6 point harness seems contradictory and I Hans works my tucking under the shoulder straps so when ASM releases how does this affect the Hans?

[backtotintops]

Originally Posted by 600hp-lpe

they can't come in from the front of the bottom cushion, as it defeats the purpose of the sub strap.

I have run 2 sub straps from under the seat up the front before. While I agree in theory sitting on the belts is probably the best I'm not sure I like sitting on belts especially in these new recaros. Has anyone tried this on the new seats?...in terms of pass through? If there is a metal frame across the front lower bolster of the seat I would think the strap would push down to that under load...maybe a few inches but not enough to actually submarine under the belt.

Would it have been so hard for recaro to have a slit in the seat? It is obvious why there are holes in the back of the seat...a slight punt on gm's part.

thoughts?

I'm also interested in a group buy on speed ware...or any good sales people out there...how about a group buy on the BK?

[Synner]

No race track will approve your car through tech if you run it over the front of the seat pad. If they are they're doing you a disservice because they don't care about your safety.

If you're worried about chafing the seats buy the fuzzy slip-on belt covers.

[White_SS/RS]

Originally Posted by backtotintops

I have run 2 sub straps from under the seat up the front before. While I agree in theory sitting on the belts is probably the best I'm not sure I like sitting on belts especially in these new recaros. Has anyone tried this on the new seats?...in terms of pass through? If there is a metal frame across the front lower bolster of the seat I would think the strap would push down to that under load...maybe a few inches but not enough to actually submarine under the belt.

Would it have been so hard for recaro to have a slit in the seat? It is obvious why there are holes in the back of the seat...a slight punt on gm's part.

thoughts?

I'm also interested in a group buy on speed ware...or any good sales people out there...how about a group buy on the BK?

I agree that they could have put a hole through the bottom for sub straps.

Group buy on Speedware would be excellent, BK is a little too intrusive for my liking. I like the fact that the Speedware bar has the clevis's that makes it quicker to remove the bar without unbolting the factory restraints.

[sting808]

Originally Posted by Synner

If you're worried about chafing the seats buy the fuzzy slip-on belt covers.

Like this? Cheapo Walmart shoulder belt cover. Been running the Speedware setup for a few months.

[cornerspeed92]

Originally Posted by sting808

Like this? Cheapo Walmart shoulder belt cover. Been running the Speedware setup for a few months.

Looking good!

[Unobtainium]

The BK bar is far superior. The other design does not take loading into consideration.
I built a similar design to the BK one a few years back, just more mounting points for our Silver State Car.

[White_SS/RS]

Originally Posted by Unobtainium

The BK bar is far superior. The other design does not take loading into consideration.
I built a similar design to the BK one a few years back, just more mounting points for our Silver State Car.

Thats a nice looking piece. I agree that the BK bar has good design to it. Its certified for DOT use. This 'loading', where do you think the major short coming is in the other bars?

[Hellfighter]

That looks pretty sweet, just add some paint and bingo!

[Unobtainium]

It's Titanium, so no paint required.


The problem with the other design, is that it puts the tube under buckling. Hollow round tubes are far weaker in buckling(compression) than they are in tension. You could argue there is also a bending moment, but it's not really a big deal if it's under compression already. It's easier and cheaper to build, sure, but when you are likely to shock load it, why not design it to take advantage of the material's properties.

[Unobtainium]

Specifically the longer tube going down from the bar. As length affects tendency to buckle by slenderness ratio, it would buckle before the top one.
Think of the load even at 100mph...
The design I built has a thicker and larger diameter bar where the load is less ideal, and slightly smaller diameter and thinner tubes for tensile loading that holds the upper bar in place.
Note that in my design, Titanium is used as tensile loading is based off of yield strength, something Titanium can excell at. The other style places the tubes in compression over a long length, which has more to do with stiffness, or Young' Modulus. All steels have basically the same stiffness, so stainless works fine assuming its of sufficient diameter and wall thickness to resist buckling.