Mach 1 Track Attack Car Configuration

[Traffic22]

My understanding is they are talking about 4 points and getting the laps in a better position to prevent a submarine while 99.9% of us that are commenting would never ever drive on a track with 4 points.

I run a 6 point myself.

I don’t see why people don’t just run the 3 point with airbags. It’s safer than a harness bar or 4pt bar with a 4pt harness. If you’re going to switch to harnesses it should be 5/6 pt.

I would say 80% of the guys that show up for my club just run 3 point and airbags. The remainder are cars like mine or fully caged race cars and, if so, 5 point minimum harness is required. My car is a “tweener”. It’s got a 6pt bolt in and halo seat with 6 point harness. Not a race car but the minimum I’m comfortable with running a bucket seat and harness.

Love your containment seat. It’s on my list. And…

Totally agree. Especially since HANS makes a 3 point device. If we ever redo ours we’d move to 6. 5 is fine, perfectly safe, but I’ve driven a car with 6 and wish we had gone that route, more secure driver position.

Well okay thanks for the info. But we're discussing the nuances and challenges of getting a 5/6 point harness with sofa seat, and starting from the Quick Fit Pro 4.

Got it…misunderstood. Yeah, I don’t think there is a way to add a 5th or 6th to the sofa seat, at least not safely.

Honestly, if it’s for safety, 3pt, HANS, Airbags, all good. If it’s for locking you into place so you’re not exhausted after a stint, I get it, and. I’m not sure there is an answer that would do that and be as safe as the factory 3pt.

I teach EVOC, and that involves sitting in the passenger seat while students whip the car all over the place. At the end of the day, I’m exhausted from bracing myself all day. I get the desire for a solution that locks someone into a seat better.

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[5.2 liters of democracy]

Yes I know about their sub strap.
It's the bracketry I'm curious about. My understanding was that a 5pt was not possible with sofa seat.

Bracketry will work to mount the lap belts but I'm almost certain the 5/6 point isn't going to work with that seat.

 

[TRDFurgesson]

Can that setup be added to Schroth QuickFit Pro 4? My shoulder belts make the lap belt ride up too high.

You’re not using it correctly

 

[GTP]

I got the QFP4 so that I can use it with Hans, and I didn't want the torso hybrid.

I think the problem with adding a submarine strap is that if the strap can't go immediately downward in front of you then it really won't prevent you from sliding forward. So that can't be done with the sofa seat.

 

[MPGainer]

For reference:

Roll bar:
https://shop.watsonracing.com/S550-...ROLL-CAGE-2015-CURRENT-p/wr-15-boltincage.htm

Harness mount:
https://shop.watsonracing.com/HARNESS-LAP-BELT-MOUNT-p/wr-harnessmnt.htm

Harness:
Seems it may fall under their custom line. I'd recommend a 5 or 6 point over the 4 point.

I use this cage and harness mount along with a Schroth 4-point ASM (link below) and HANS. I only do HPDE events, and it's allowed at my home track (NJMP). I crank down the lap belts before tightening the shoulder harnesses and it keeps everything in place. I'm not a safety expert, though I did a fair amount of reading on the safety of the Schroth ASM technology and it appears to be safer than running a three-point and Simpson Hybrid (which I also have). The Schroth allows you to expand to a six-point system, which I'll eventually do. But until then, I'd rather have a half cage and ASM harness than a three point belt and nothing to help resist the roof collapsing in the event of a catastrophic accident.

https://www.schrothracing.com/item/profi-ii-asm/fia-4-point-asm

 

[IPOGT]

Stickers!! I want some of the track attack door stickers.

 

[5.2 liters of democracy]

I use this cage and harness mount along with a Schroth 4-point ASM (link below) and HANS. I only do HPDE events, and it's allowed at my home track (NJMP). I crank down the lap belts before tightening the should harnesses and it keeps everything in place. I'm not a safety expert, though I did a fair amount of reading on the safety of the Schroth ASM technology and it appears to be safer than running a 3-point and Simpson Hybrid (which I also have). The Schroth allows you to expand to a six-point system, which I'll eventually do. But until then, I'd rather have a half cage and ASM harness than a three point belt and nothing to help resist the roof collapsing in the event of a catastrophic accident.

https://www.schrothracing.com/item/profi-ii-asm/fia-4-point-asm

I also used a Schroth 4-point and it did a great job with the OEM seats while it was legal in my class. Used correctly, it absolutely kept me in place better than the 3-point while driving. I don't like 3-point belts on track because I'm being tossed around and having to brace myself.

For any of those that are unaware, the ASM tech sort of mimics a 3-point in a crash where your one shoulder belt is going to elongate faster than the other, causing your torso to pivot and be pushed back down in the seat rather than sliding under the belt. If someone is going to use a 4-point, it absolutely needs some sort of anti-submarining.

 

[mustang5o]

I spoke with HMS Motorsport about how to move forward with my setup. In my 19 PP2 I ran the QFP as designed using the rear seatbelt and standard lapbelt attachments. My 23 M1 has RSD. I've been told two different things. Someone on these forums told me underneath their RSD the rear seatbelt holes are not threaded. Someone at HMS said they have installed QFP in GT350R's and believed the holes to be threaded. I plan to take my RSD out in the next week or so to confirm. A buddy of mine who works at a used car lot and fixes up wrecked cars for resale was able to track down that the bolts used by Ford might be self tapping. Though that information was only specific to the upper attachment point which is not used by QFP. There is no reference to these bolts on their own anywhere a Ford dealer has been able to find or parts diagram shows. Does anyone have any information on these?

I would just go with the "FHR" device that works with 3 point, but at $1200 I'd rather put that towards a Watson 4 point and use my existing "FHR". I might have my factory Recaro's modified with a sub belt slot (I've seen this done before) to use a true 6 point. There is a guy on trackmustangsonline who makes a bracket that many have used with the factory seats to run 6 point harnesses. They have to be the harness style that you can sit on the sub belts and the sub belts run between the seat bottom and seat back with attachment points on the brackets he builds. The bracket also has mounting points for the lap belts. This is a bit of a compromise but as stated many have used them since the Boss' first came out. If you are interested I can track down a link to his post on trackmustangsonline.

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