Street Track Car - Roll Hoop and belt suggestions |
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Street Track Car - Roll Hoop and belt suggestions |
Justinp71 |
Mar 22 2021, 09:53 AM
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#1
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Senior Member Group: Members Posts: 1,583 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None |
What setup for roll protection and belts do you guys like to use for a street/track car? I am looking to update / redo my setup soon and looking for what you guys have done.
I currently run a roll hoop that bolts to the floor and belts that are bolted to the firewall (but not very adequately). I'm kind of ruling out a harness bar due to the reports of the belts being mounted a little high. Does a roll hoop even really add much protection with the 914 having the targa bar? Does anyone know why they added them to the 914 gt? Maybe for a more high speed crash? |
slivel |
Mar 22 2021, 10:27 AM
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#2
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Old car....... older driver Group: Members Posts: 508 Joined: 10-July 04 From: San Diego Member No.: 2,332 Region Association: Southern California |
What setup for roll protection and belts do you guys like to use for a street/track car? I am looking to update / redo my setup soon and looking for what you guys have done. I currently run a roll hoop that bolts to the floor and belts that are bolted to the firewall (but not very adequately). I'm kind of ruling out a harness bar due to the reports of the belts being mounted a little high. Does a roll hoop even really add much protection with the 914 having the targa bar? Does anyone know why they added them to the 914 gt? Maybe for a more high speed crash? Since you say that you intend to do track events, I recommend consulting the rules for the particular organization you will be running with. Getting recommendations from the list members here will not necessarily get you through the tech inspection. Specifics like roll bar material (mild steel or chrome moly), tube wall thickness and diameter, mounting points, head clearance, SFA/FIA compliance, and others may come into play. Not fun to get to track ready to play and fail tech. |
Justinp71 |
Mar 22 2021, 10:35 AM
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#3
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Senior Member Group: Members Posts: 1,583 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None |
What setup for roll protection and belts do you guys like to use for a street/track car? I am looking to update / redo my setup soon and looking for what you guys have done. I currently run a roll hoop that bolts to the floor and belts that are bolted to the firewall (but not very adequately). I'm kind of ruling out a harness bar due to the reports of the belts being mounted a little high. Does a roll hoop even really add much protection with the 914 having the targa bar? Does anyone know why they added them to the 914 gt? Maybe for a more high speed crash? Since you say that you intend to do track events, I recommend consulting the rules for the particular organization you will be running with. Getting recommendations from the list members here will not necessarily get you through the tech inspection. Specifics like roll bar material (mild steel or chrome moly), tube wall thickness and diameter, mounting points, head clearance, SFA/FIA compliance, and others may come into play. Not fun to get to track ready to play and fail tech. Thanks, I only plan to do HDPE. Its all self inspection. The word I used of "events" was mis-leading (IMG:style_emoticons/default/unsure.gif) , thanks. |
slivel |
Mar 22 2021, 11:15 AM
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#4
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Old car....... older driver Group: Members Posts: 508 Joined: 10-July 04 From: San Diego Member No.: 2,332 Region Association: Southern California |
What setup for roll protection and belts do you guys like to use for a street/track car? I am looking to update / redo my setup soon and looking for what you guys have done. I currently run a roll hoop that bolts to the floor and belts that are bolted to the firewall (but not very adequately). I'm kind of ruling out a harness bar due to the reports of the belts being mounted a little high. Does a roll hoop even really add much protection with the 914 having the targa bar? Does anyone know why they added them to the 914 gt? Maybe for a more high speed crash? Since you say that you intend to do track events, I recommend consulting the rules for the particular organization you will be running with. Getting recommendations from the list members here will not necessarily get you through the tech inspection. Specifics like roll bar material (mild steel or chrome moly), tube wall thickness and diameter, mounting points, head clearance, SFA/FIA compliance, and others may come into play. Not fun to get to track ready to play and fail tech. Thanks, I only plan to do HDPE. Its all self inspection. The word I used of "events" was mis-leading (IMG:style_emoticons/default/unsure.gif) , thanks. Certain organizations require specific safety equipment even for DE's. PCA does and the specifics change depending upon the modifications done to the car. Stock configuration is minimum but as you add "performance points" the requirements change. For example check section XIII on the PCA Zone 8 rule book: https://www.zone8.org/assets/docs/2021/2021Z8RulesRev2.pdf |
Justinp71 |
Mar 22 2021, 11:24 AM
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#5
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Senior Member Group: Members Posts: 1,583 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None |
What setup for roll protection and belts do you guys like to use for a street/track car? I am looking to update / redo my setup soon and looking for what you guys have done. I currently run a roll hoop that bolts to the floor and belts that are bolted to the firewall (but not very adequately). I'm kind of ruling out a harness bar due to the reports of the belts being mounted a little high. Does a roll hoop even really add much protection with the 914 having the targa bar? Does anyone know why they added them to the 914 gt? Maybe for a more high speed crash? Since you say that you intend to do track events, I recommend consulting the rules for the particular organization you will be running with. Getting recommendations from the list members here will not necessarily get you through the tech inspection. Specifics like roll bar material (mild steel or chrome moly), tube wall thickness and diameter, mounting points, head clearance, SFA/FIA compliance, and others may come into play. Not fun to get to track ready to play and fail tech. Thanks, I only plan to do HDPE. Its all self inspection. The word I used of "events" was mis-leading (IMG:style_emoticons/default/unsure.gif) , thanks. Certain organizations require specific safety equipment even for DE's. PCA does and the specifics change depending upon the modifications done to the car. Stock configuration is minimum but as you add "performance points" the requirements change. For example check section XIII on the PCA Zone 8 rule book: https://www.zone8.org/assets/docs/2021/2021Z8RulesRev2.pdf Great info. Do you know if in Zone 8 it is allowed for a 5 point harness to be used with a stock design 914 seat? It reads to me they require aftermarket seats with a 5 point harness, but I wonder if the 914 is an exception because the seats are so narrow. |
slivel |
Mar 22 2021, 11:48 AM
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#6
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Old car....... older driver Group: Members Posts: 508 Joined: 10-July 04 From: San Diego Member No.: 2,332 Region Association: Southern California |
Great info. Do you know if in Zone 8 it is allowed for a 5 point harness to be used with a stock design 914 seat? It reads to me they require aftermarket seats with a 5 point harness, but I wonder if the 914 is an exception because the seats are so narrow.
[/quote] It's a little ambiguous. This is from the rule book: While an approved competition seat is not required on its own, many harness manufacturers require it for proper harness installation. If harnesses are installed and the seat is not an SFI or FIA approved competition seat, the entrant needs to bring documentation to prove that the installation follows the manufacturer’s instructions. This applies to Time Trial, DE and Autocross; for both driver and passenger. Also, if you run 5 or 6 points you must have an SFI/FIA approved head and neck restraint device. |
wndsrfr |
Mar 23 2021, 06:33 AM
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#7
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Senior Member Group: Members Posts: 1,428 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
For DE's the hoop you have is probably ok as the stock structure hasn't been modified. However.....get a good helmet and a good proper seat and take the time to install it well. Watch this....easily can happen to you in a DE---this was a low speed incident on damp track with no intent to push it....
https://www.youtube.com/watch?v=1heYF7JqF4I |
infraredcalvin |
Mar 23 2021, 08:05 AM
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#8
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Distracted Member Group: Members Posts: 1,509 Joined: 25-August 08 From: Ladera Ranch, CA Member No.: 9,463 Region Association: Southern California |
POC still requires tech validation, even though it technically is a self inspection.
Dig into the 914 seat with harnesses. I recall it’s specifically banned in POC, something to do with harnesses slipping down the side of the seats... could be changed now, but I do recall reading about it a few years ago. |
Justinp71 |
Mar 23 2021, 07:01 PM
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#9
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Senior Member Group: Members Posts: 1,583 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None |
POC still requires tech validation, even though it technically is a self inspection. Dig into the 914 seat with harnesses. I recall it’s specifically banned in POC, something to do with harnesses slipping down the side of the seats... could be changed now, but I do recall reading about it a few years ago. Dang I have some really nice reupholstered and bolstered stock frame seats. I sat in them harnessed on and it didn't feel like the belts were to far out for me. Any other race seat recommendations? |
wndsrfr |
Mar 23 2021, 08:12 PM
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#10
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Senior Member Group: Members Posts: 1,428 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
After seeing my head flop with the "race" seats I had in the video, I went with a Sparco model similar to their "Pro ADV" that provides side impact containment for the helmet. Actually easy enough to bolt it to the floor with their side mount angle pieces. That way you can mount it lower than your stock seat & provide better angle for the shoulder straps...
Getting in & cinching down the 5-pointharness good and hard provides a comforting sense of "wearing" the car like a good set of whitey-tighties... |
infraredcalvin |
Mar 23 2021, 09:39 PM
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#11
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Distracted Member Group: Members Posts: 1,509 Joined: 25-August 08 From: Ladera Ranch, CA Member No.: 9,463 Region Association: Southern California |
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Justinp71 |
Mar 24 2021, 02:13 PM
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#12
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Senior Member Group: Members Posts: 1,583 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None |
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stownsen914 |
Mar 24 2021, 02:29 PM
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#13
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Senior Member Group: Members Posts: 912 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
The clubs I've run with add requirements for race seats if you use harnesses. Race seat with slots for the lap belts and shoulder harnesses, to be specific. And personally I wouldn't add harnesses without a rollbar, especially in a convertible. Harnesses hold you in a bolt upright position which could actually be more dangerous than stock belts in the event of a rollover, if you don't have the rollbar.
If you are looking to try a trackday and haven't done one before, I'd recommend just trying it with the stock setup and see if you like it before investing in all the equipment. |
stownsen914 |
Mar 24 2021, 02:32 PM
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#14
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Senior Member Group: Members Posts: 912 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
Should have mentioned - stock seats with harnesses aren't a great idea even if allowed. Stock seats without the slots for shoulder straps can encourage the straps to slide off your shoulders in a frontal impact. Definitely not what you want. The slots help keep them in position on your shoulders.
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infraredcalvin |
Mar 24 2021, 07:56 PM
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#15
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Distracted Member Group: Members Posts: 1,509 Joined: 25-August 08 From: Ladera Ranch, CA Member No.: 9,463 Region Association: Southern California |
I think that’s why they only allow the h style cause it has a breast clip that keeps the shoulder straps together.
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brant |
Mar 25 2021, 08:37 AM
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#16
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914 Wizard Group: Members Posts: 11,613 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Should have mentioned - stock seats with harnesses aren't a great idea even if allowed. Stock seats without the slots for shoulder straps can encourage the straps to slide off your shoulders in a frontal impact. Definitely not what you want. The slots help keep them in position on your shoulders. I agree with this... even if allowed... safety equipment is important and a good area to have the highest standards |
Justinp71 |
Mar 25 2021, 04:45 PM
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#17
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Senior Member Group: Members Posts: 1,583 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None |
I've been running my car for about 10 years on the track (only about 7 track days though) with a stock seat and harness and never knew! The way the belts lie on me I never felt like I would slip out unless the belts were looser. Any race seat recommendations for someone 6' tall? Smaller the seat the better... one thing I like about the 914 seat. |
stownsen914 |
Mar 28 2021, 08:00 AM
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#18
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Senior Member Group: Members Posts: 912 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
I think that’s why they only allow the h style cause it has a breast clip that keeps the shoulder straps together. Just googled this quickly. Belts that have breast clips between the shoulder harnesses seem to be mostly "tuner" style belts, and the breast clips look kinda small. The problem with stock seats is the gradual taper that from the headrest down to the shoulder/back area. Depending on where you mount the belts and how tall the driver is, you can have a situation where the belts ride on the tapered portion of the seat, and in a frontal impact the force of the occupant's weight pushing into the belts, combined with the taper on the seat, will literally pry the belts off the shoulders. I wouldn't trust a little breast clip to help keep the belts in place. |
d914 |
Mar 28 2021, 11:03 AM
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#19
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Advanced Member Group: Members Posts: 2,331 Joined: 12-July 03 From: Atlanta, ga Member No.: 904 Region Association: South East States |
small deviation.
race seats harness rear of roof bolted down. Replaced rear clips. Someone came out with a kit a few years ago.. This good enough to avoid roll bar? Also just some DE's.. |
campbellcj |
Mar 31 2021, 07:47 AM
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#20
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I can't Re Member Group: Members Posts: 4,540 Joined: 26-December 02 From: Agoura, CA Member No.: 21 Region Association: Southern California |
Thinking back to "trying" to drive on track with street seats and belts...I would not recommend doing that from either a safety, performance or fun aspect, unless you are really just casually trying it out for the first time.
With POC it used to be the case once you passed a certain level of performance mods - not many - the rollbar/cage etc became mandatory. (At least for competitive events, not necessarily DE/AutoX). Also HANS or similar (which is a damn good idea for everyone too regardless of rules.) So for sure the #1 rule is to read the rule book of each group you might even potentially want to go drive with. |
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