rollbar-check, seat-check, harness?

[SLO-BOB]

1st- How is it best to mount a harness sub strap. Is mounting a 6 point easier than mounting a 5 point? Vice-versa?

Here's a link to a harness (quick release/camlock) I'm considering. I don't even know what options I need to mount the damn thing to my car. Considering the potential, I would really appreciate the learned advice of you fellows.

link

[Dave Nordhoff]

Try Crow Enterprizes. I recently purchased a 5-point, cam lock from them. Great service and prices. I used an eye-bolt thru the floor for the sub strap.
Dave

[fatbillybob]

IMO 6pt is the way to go because you can mount it parachute style or straight down so you have anchoring options. I like formula style 6pts or scroth hybrid or simpson platinum latch link type because it give your family jewels plenty of room. The scroth and simpson latch attach directly to the lap belts so work even better than formula style locking on the shoulders. Many mount the sub to the floor pan which is very weak dispite use of a washer. So with 6 pt sub you have two points to pull on which is better than just one. I think the quote is that the sub can see 2500lbs of force and we all know what happens if you put a jack under the floor pan of your generic 3000lb car right?

[SLO-BOB]

Can sub straps (5 or 6 point) mount somewhere besides through the floor?

[Dixie]

All your questions are answered here. Download the GCR and read. >>> www.scca.org

[Don Plumley]

Originally posted by SLO-BOB
Can sub straps (5 or 6 point) mount somewhere besides through the floor?

If you go parachute style, they can go back to the lap mounts - it's not perfect, but some are happy with it.

Some folks have fabricated a rod that mounts to the seat mounts and has center attachments for 5 or 6 points.

Your race class, your tech inspectors, and your own sense of safety will dictate what you want to do. My choice was simple - no compromises on safety. I didn't want my belts sharing seat attachment points because a) they are much smaller and b) it removes a redundant failure point (e.g. in a bad crash, if the seat mounts pulled out, I want my belts attached to the chassis.

A note about SFI vs FIA rated belts. You'll note that G-Force, etc. SFI rated belts are about 1/2 of FIA belts (i.e. Schroth). The difference is that SFI belts have to be replaced every two years, FIA every five. That makes them even or better in price. And they are a little nicer in terms of hardware.

[nostatic]

Originally posted by Don Plumley


Your race class, your tech inspectors, and your own sense of safety will dictate what you want to do. My choice was simple - no compromises on safety. I didn't want my belts sharing seat attachment points because a) they are much smaller and b) it removes a redundant failure point (e.g. in a bad crash, if the seat mounts pulled out, I want my belts attached to the chassis.

In friday practice we had a guy roll coming out of turn 4 at Willow. Walked away. I had a farming expedition coming out of 2 on saturday (two wheels off while understeering, then snapped back across the track and spun/slid downhill in the dirt), and could have very easily caught a wheel and rolled. What he said.

[SLO-BOB]

Don-where did you mount yours?

[fatbillybob]

Best mounts are 1st on the roll cage with seat attached to the cage not the floor of the car. Second best is on the chassis preferably frame rails and fortified tunnel. third is on the seat anchors. Note than many new cars like GM vettes since c5 use the seatbelts integrated into the seat thus only on the 4 seat anchors. GM thinks these are strong enough. If I was doing a floor mount I would fabricate a rectanglular braket to mount the seat. A bar would cross this rectangle in the area of the sub hole and this would be flush with the floor pan. Thus the sub belts can be bolted through the bar and through the floor adding 2 more points of attachment of the seat to the car.

[Don Plumley]

Originally posted by SLO-BOB
Don-where did you mount yours?

Standard mounting plates through the floor pan:



Double nutted underneath using a nylock - it also covers the threads in case I hit something hard with them.