Safety seat and belt question?

ResIpsa · 12-09-2015, 02:27 PM

When you said your shoulder belts are attached to the OEM bar do you mean the silver body stiffening brace ( that is often incorrectly thought as a strut brace)? If that's what you mean then that is certainly not safe. Looking at the attachment points for that bar and the mounting screws Plus sheet metal brackets it doesn't look that strong.

I suspect that you would be safer reinstalling your three points for the trip to the cage builder. You will need to unbolt the seat belt buckle from your factory seat and fabricate a bracket to attach it to your planted base

ResIpsa · 12-09-2015, 02:50 PM

And with your issue with the HANS sliding on the belts. I have experienced that before at the track and it is a little unsettling. What I do now is try to sit as tall in my seat ( back as straight as i can) as possible as I tighten my shoulder belts. That seems to help.

synolimit · 12-09-2015, 04:40 PM

Quote:

Originally Posted by ResIpsa

And with your issue with the HANS sliding on the belts. I have experienced that before at the track and it is a little unsettling. What I do now is try to sit as tall in my seat ( back as straight as i can) as possible as I tighten my shoulder belts. That seems to help.

I tried again today. No luck. Im surprised that link to HANS says keep the belts at 20* below horizontal and not above. Maybe its HANS only that way as ive always read with a race belt it should be above horizontal.

ENT-Z · 12-10-2015, 06:40 PM

Quote:

Originally Posted by synolimit

I tried again today. No luck. Im surprised that link to HANS says keep the belts at 20* below horizontal and not above. Maybe its HANS only that way as ive always read with a race belt it should be above horizontal.

Mine is definitely 15-20 degrees below horizontal. Really holds you upright when you cinch em down tight.

BGTV8 · 12-10-2015, 07:39 PM

Quote:

Originally Posted by synolimit

I tried again today. No luck. Im surprised that link to HANS says keep the belts at 20* below horizontal and not above. Maybe its HANS only that way as ive always read with a race belt it should be above horizontal.

The FIA HANS writeup says:

2.4 The rear section of the shoulder strap should slope downwards from the uppermost point of
contact with the HANS®-belt-bearing-surface to the anchorage point on the car, preferably at about
20° below the horizontal, angles between 0° and 20° being acceptable as shown in Figure 4.

So it can be between horizontal and maximum of 20-degrees below horizontal ... understanding why they recommend less than horizontal is a question for the FIA and HANS engineers ....

I was with you .... horizontal belts were the way to go (in my mind because it is a "straight pull" and absence of spinal compression but since friction between belt and HANS device in integral to its operation, maybe that is the reason ... pure speculation on my part tho'

synolimit · 12-09-2015, 04:37 PM

Quote:

Originally Posted by ResIpsa

When you said your shoulder belts are attached to the OEM bar do you mean the silver body stiffening brace ( that is often incorrectly thought as a strut brace)? If that's what you mean then that is certainly not safe. Looking at the attachment points for that bar and the mounting screws Plus sheet metal brackets it doesn't look that strong.

I suspect that you would be safer reinstalling your three points for the trip to the cage builder. You will need to unbolt the seat belt buckle from your factory seat and fabricate a bracket to attach it to your planted base

Its a 5 minute drive. Im really not worried about that.

Rusty · 12-09-2015, 05:32 PM

Quote:

Originally Posted by ResIpsa

When you said your shoulder belts are attached to the OEM bar do you mean the silver body stiffening brace ( that is often incorrectly thought as a strut brace)? If that's what you mean then that is certainly not safe. Looking at the attachment points for that bar and the mounting screws Plus sheet metal brackets it doesn't look that strong.

I suspect that you would be safer reinstalling your three points for the trip to the cage builder. You will need to unbolt the seat belt buckle from your factory seat and fabricate a bracket to attach it to your planted base

The OEM bar is just thin sheet tubing. It's just for looks. Here is the install thread of my Robispec bar. There is some comments on harnesses in there too.

Robispec Harness Bar Install

12-09-2015, 02:27 PM	#1 (permalink)
ResIpsa Track Member Join Date: Apr 2009 Location: Virginia Posts: 564 Drives: 09 RACING HEN Rep Power: 339	When you said your shoulder belts are attached to the OEM bar do you mean the silver body stiffening brace ( that is often incorrectly thought as a strut brace)? If that's what you mean then that is certainly not safe. Looking at the attachment points for that bar and the mounting screws Plus sheet metal brackets it doesn't look that strong. I suspect that you would be safer reinstalling your three points for the trip to the cage builder. You will need to unbolt the seat belt buckle from your factory seat and fabricate a bracket to attach it to your planted base __________________ The Reed Law Firm; Michael Fasano VA Attorney and Counselor at Law: A Virginia Traffic, Criminal, and Family Lawyer.https://reedlawva.com/

12-09-2015, 02:50 PM	#2 (permalink)
ResIpsa Track Member Join Date: Apr 2009 Location: Virginia Posts: 564 Drives: 09 RACING HEN Rep Power: 339	And with your issue with the HANS sliding on the belts. I have experienced that before at the track and it is a little unsettling. What I do now is try to sit as tall in my seat ( back as straight as i can) as possible as I tighten my shoulder belts. That seems to help. __________________ The Reed Law Firm; Michael Fasano VA Attorney and Counselor at Law: A Virginia Traffic, Criminal, and Family Lawyer.https://reedlawva.com/

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