Debate over mounting 6-Point to GT3 Seats vs. Chassis
08-20-2008, 06:59 PM
#1
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Debate over mounting 6-Point to GT3 Seats vs. Chassis
In a previous post with my pics and installation of GT3 seats and harness bar, smsarchitects pointed out a "Der Gasser" article about lap belt safety, and in a nutshell stated that the sub bar as well as the lap belts should be mounted to the chassis and not the seat. I pulled the Scroth installation instructions from the 6-point harness I received and it indicates that the lap belts as well as the OEM 3-point belt all get bolted to the seat. Link below. What to do you guys think? What is the right way? Is Scroth dead wrong with these instructions? THanks.
Scroth Instructions
Scroth Instructions
08-20-2008, 09:21 PM
#2
Still plays with cars.
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Do you really think that Porsche and Scroth are wrong? Mine are installed as per Porsche and Scroth instructions.
08-20-2008, 09:30 PM
#3
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No, I highly doubt Porsche and Scroth are wrong. Mine are installed per the instructions as well. It's always good to hear differing opinions though. With regards to safety, we all definetely need to be on the same page.
08-20-2008, 10:32 PM
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If you want to drill holes in the tub, go right ahead. Bolted to the seat is pretty safe but you always have safer like rollbar vs full cage. Before the seat rips off, you'll need one heck of a crash so I doubt having the belts bolted to the seat is unsafe. Mine is also mounted like that.
08-20-2008, 11:34 PM
#6
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There is a sub-floor under the seat with attachment holes already made. There is NO DRILLING required. Just a lot of patience to get a washer and nut under the sub-floor. Take out the carpet and you will see them (even for the anti-sub belt).
Last edited by XLR8N-FAN; 08-21-2008 at 12:22 PM.
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08-21-2008, 07:58 AM
#8
Nordschleife Master
Having your lap and sub belts anchored to the car versus the seat is optimal. Schroth and PCNA are not wrong but the better way is to the anchored to the car.
08-21-2008, 01:00 PM
#9
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From PCA rule book
The following is provided as a guideline. In all cases, the manufacturers
instructions must be followed when installing harnesses.
1. Hardware should meet or exceed the strength of standard DOT or
SAE approved type. Example: Forged eye bolts with 7/16" SAE
threads.
2. Attachments to sheet metal portions of the car must have adequate
backing plates. (1-1/2” O.D. washers minimum backing per 7/16”
eyebolt.)
3. Lap belts should be mounted to approximately bisect the angle
between the thigh and the spine as viewed from the side. Competition
harnesses should be mounted so that the rearward horizontal portion
leaves the shoulders at an angle approximately 90 degree to the spine
as viewed from the side.
4. Attachments must be to the car itself and not to the seat frames.
The following is provided as a guideline. In all cases, the manufacturers
instructions must be followed when installing harnesses.
1. Hardware should meet or exceed the strength of standard DOT or
SAE approved type. Example: Forged eye bolts with 7/16" SAE
threads.
2. Attachments to sheet metal portions of the car must have adequate
backing plates. (1-1/2” O.D. washers minimum backing per 7/16”
eyebolt.)
3. Lap belts should be mounted to approximately bisect the angle
between the thigh and the spine as viewed from the side. Competition
harnesses should be mounted so that the rearward horizontal portion
leaves the shoulders at an angle approximately 90 degree to the spine
as viewed from the side.
4. Attachments must be to the car itself and not to the seat frames.
08-21-2008, 01:08 PM
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The following is provided as a guideline. In all cases, the manufacturers
instructions must be followed when installing harnesses.
So if you are allowed to run the GT3 seats and Schroth harnesses in PCA racing, then you are allowed to follow Schroth's instructions and mount them to the seat.
At least that's the way I read it.
Cheers,
08-21-2008, 01:27 PM
#11
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However, as per the PCA rule book, that gets overridden by:
The following is provided as a guideline. In all cases, the manufacturers
instructions must be followed when installing harnesses.
So if you are allowed to run the GT3 seats and Schroth harnesses in PCA racing, then you are allowed to follow Schroth's instructions and mount them to the seat.
At least that's the way I read it.
Cheers,
The following is provided as a guideline. In all cases, the manufacturers
instructions must be followed when installing harnesses.
So if you are allowed to run the GT3 seats and Schroth harnesses in PCA racing, then you are allowed to follow Schroth's instructions and mount them to the seat.
At least that's the way I read it.
Cheers,
on another note, i took a guy for a ride before lunch today.. and did a real nice 4th to 2nd shift, then punched it... he asked "does this car have a turbo?!" I smiled and said "no, its only a N/A 6 cylinder."
08-21-2008, 02:37 PM
#12
Three Wheelin'
Right. There's a comprise in everything. Should you be using a teq. or DAS sport bar for the best protection? No. Should you mount your harnesses to the chassis? Sure. Can you? Doubt it. For the general public their suggestion works for 85% of the population.
08-21-2008, 06:29 PM
#14
Rennlist Member
In a previous post with my pics and installation of GT3 seats and harness bar, smsarchitects pointed out a "Der Gasser" article about lap belt safety, and in a nutshell stated that the sub bar as well as the lap belts should be mounted to the chassis and not the seat. I pulled the Scroth installation instructions from the 6-point harness I received and it indicates that the lap belts as well as the OEM 3-point belt all get bolted to the seat. Link below. What to do you guys think? What is the right way? Is Scroth dead wrong with these instructions? THanks.
Scroth Instructions
Scroth Instructions
lap belt to those side mounts - where the factory mount has a nice square
hole, the B-K mount has a BIG round hole ... you will have to mount the
lap belt with the bottom of the factory 3-pt at the door sill mount point/
foot of your (bolt-in) cage.
08-22-2008, 12:09 PM
#15
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I ran this debate past the SD-PCA rules guru. He says the seatbelts have to be mounted to the sub-floor. I would hate to get ready for an event and find that there is a debate over my belts being properly mounted.