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03-02-2009, 11:53 AM
I just e-mailed this to Paul Walsack our saftey chair
Paul
I am writing this e-mail to request clarification on the acceptable manner in which to mount the Porsche supplied sub-belt in the Schroth Profi 11-6 (6 point) harness in conjunction with the GT3 seats that adjust fore and aft. I believe this paring is the European Club Racing set-up. In my case it is in the process of being mounted in my Cayman and it in unclear in at least two regions if mounting to the Porsche sub bar using the Schroth Wrap method is going to pass DE tech. Salient facts:
If the Schroth Profi II-6 are purchased anywhere but through Porsche, the sub-belts are (i) longer and (ii) come with a floor mounting kit. The set supplied with the GT3 seats does not contain the floor mounting hardware but instead supply the same hardware (on the sub belt out of the box) that the shoulder belts use to mount to the Harness bar.
Schroth is clear in the “Competition Harness Instructions�? that the mounting point for the sub belt is ideally to be directly under the seat pass through point but in no case more than 20 degrees aft.
Porsche supplies a sub-belt mount bar that mounts to the seat frame with four 13mm bolts directly under the sub-belt seat opening in the GT3 seat and moves fore and aft with the seat maintaining the proper entry angle.
The Schroth Sub-belt lengths are sufficient to utilize the prescribed Wrap System. The belts are not long enough for mount to the floor and accommodate the movement of the seat. While the drivers seat floor mounting could be located such that in the preferred driving position the entry angle was correct, the instructors seat (I am in RTR Blue) position would vary dependent on the size of the individual.
Lastly, The seat adjustment cross bar is located such that if the sub-belts were floor mounted the cross bar would inhibit fore and aft movement.
Given all of the above it is clear to me that Porsche intended the sub-belt mounts to be wrap mounted around the sub-belt bar as this is the only logical application that allows the parameters of the belt manufacturer to be met while allowing the seats the fore and aft movement.
Can you please issue a ruling on this? (VIR on 3-13 and my OEM seats are out of the car at Possum Hollow motorsports)
Paul
I am writing this e-mail to request clarification on the acceptable manner in which to mount the Porsche supplied sub-belt in the Schroth Profi 11-6 (6 point) harness in conjunction with the GT3 seats that adjust fore and aft. I believe this paring is the European Club Racing set-up. In my case it is in the process of being mounted in my Cayman and it in unclear in at least two regions if mounting to the Porsche sub bar using the Schroth Wrap method is going to pass DE tech. Salient facts:
If the Schroth Profi II-6 are purchased anywhere but through Porsche, the sub-belts are (i) longer and (ii) come with a floor mounting kit. The set supplied with the GT3 seats does not contain the floor mounting hardware but instead supply the same hardware (on the sub belt out of the box) that the shoulder belts use to mount to the Harness bar.
Schroth is clear in the “Competition Harness Instructions�? that the mounting point for the sub belt is ideally to be directly under the seat pass through point but in no case more than 20 degrees aft.
Porsche supplies a sub-belt mount bar that mounts to the seat frame with four 13mm bolts directly under the sub-belt seat opening in the GT3 seat and moves fore and aft with the seat maintaining the proper entry angle.
The Schroth Sub-belt lengths are sufficient to utilize the prescribed Wrap System. The belts are not long enough for mount to the floor and accommodate the movement of the seat. While the drivers seat floor mounting could be located such that in the preferred driving position the entry angle was correct, the instructors seat (I am in RTR Blue) position would vary dependent on the size of the individual.
Lastly, The seat adjustment cross bar is located such that if the sub-belts were floor mounted the cross bar would inhibit fore and aft movement.
Given all of the above it is clear to me that Porsche intended the sub-belt mounts to be wrap mounted around the sub-belt bar as this is the only logical application that allows the parameters of the belt manufacturer to be met while allowing the seats the fore and aft movement.
Can you please issue a ruling on this? (VIR on 3-13 and my OEM seats are out of the car at Possum Hollow motorsports)
S C Waters
07 Cayman, DE car
07 Cayman, DE car