could you possibly add hoops to it behind the seats, that would look cool also.
Making a harness bar.
Thread Starter
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Joined: Jun 2004
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From: WI
Making a harness bar.
I've been experimenting with making a harness bar. This one:
Cost about $50. It is gas welded to federal aircraft spec. Here is the list of metal:
http://www.aircraftspruce.com/menus/me/steel.html
03-55300 4130 SHEET 6" X 12" X .125" $8.28
03-10800-4 4130 STEEL TUBE 2X.065 4FT $26.40
It weighs four pounds. Each harness with all straps weighs six pounds.
Cost about $50. It is gas welded to federal aircraft spec. Here is the list of metal:
http://www.aircraftspruce.com/menus/me/steel.html
03-55300 4130 SHEET 6" X 12" X .125" $8.28
03-10800-4 4130 STEEL TUBE 2X.065 4FT $26.40
It weighs four pounds. Each harness with all straps weighs six pounds.
Last edited by Aardwolf; Sep 24, 2010 at 07:35 PM.
Thread Starter
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From: WI
I thought about that as I have seen the design with the hoops. I thought that they wouldn't really help in a roll over as they are unsupported in the middle of the bar plus the halo is part of the frame and is steel. So there is a roll bar already. I was surprised the harness straps weigh so much!
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From: WI
I made this one easy to remove. The end brackets could be turned the other way and have it permently bolted down. This way is easier to access the bolts. I used the two studs that are there plus tapped and added another bolt. I made the flange extra long toward the front of the car. This will cause the front of the flange to try and push through the frame and the rear to try and pull up the bolts. I could add yet another bolt or stud in the back and have four total bolts on each side.
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Thread Starter
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Joined: Jun 2004
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From: WI
I would check but I tossed the brackets as extra weight. I made it easy to remove so you could remove the bar and put the top store brackets back on in just a min.
I'm going to clean it up and paint the bar tonight.
Welding it in would be nice! I have been thinking of accessing that area under the targa brackets, anyone know if you can see that under the fender liner? I could install a bottom plate to really make it strong.
Edit, it took around four hours to make this. I didn't keep track to well of the gas welding, that takes a long time. The press was set to 35 tons to bend the end bracket flange. Aluminum mandrels were made to form the radius.
I'm going to clean it up and paint the bar tonight.
Welding it in would be nice! I have been thinking of accessing that area under the targa brackets, anyone know if you can see that under the fender liner? I could install a bottom plate to really make it strong.
Edit, it took around four hours to make this. I didn't keep track to well of the gas welding, that takes a long time. The press was set to 35 tons to bend the end bracket flange. Aluminum mandrels were made to form the radius.
Last edited by Aardwolf; Jul 21, 2008 at 12:14 PM.
Melting Slicks
Joined: Jul 2000
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From: Amarillo TX
Dave
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From: WI
You would risk your life on that?
Melting Slicks
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From: Amarillo TX
I'm not knocking your product, I'm just offering cheap safe advice.
Dave Cooper
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From: WI
Dave, thank you for the tip on that. I ran a wire into the tapped hole I made by the targa mount studs. 1.5" down is more steel. I am wondering if I should bother with the two targa holder studs at all and just cut that out or run a large bolt through that piece of strap steel into the frame 1.5" down. I pulled out all the carpet there and that strap piece of steel is pretty wide, it's the whole horizontal part on the wheel well. On the verticle side in the hatch area it is fiber. Odd design there.
Last edited by Aardwolf; Jul 25, 2008 at 06:55 PM.
Thread Starter
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From: WI
I've been looking at other harness bars. It looks like the Exotic Muscle bar uses those two targa mount studs. Here is a nice picture from Mojave of the bar:
If those two studs pulled out it looks like the bar would rotate forward by pivoting on the seat belt stud and be of no use in a crash. How was the R&D bar made?
If those two studs pulled out it looks like the bar would rotate forward by pivoting on the seat belt stud and be of no use in a crash. How was the R&D bar made?
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I've been experimenting with making a harness bar. This one:
Cost about $50. It is gas welded to federal aircraft spec. Here is the list of metal:
http://www.aircraftspruce.com/menus/me/steel.html
03-55300 4130 SHEET 6" X 12" X .125" $8.28
03-10800-4 4130 STEEL TUBE 2X.065 4FT $26.40
It weighs four pounds. Each harness with all straps weighs six pounds.
Cost about $50. It is gas welded to federal aircraft spec. Here is the list of metal:
http://www.aircraftspruce.com/menus/me/steel.html
03-55300 4130 SHEET 6" X 12" X .125" $8.28
03-10800-4 4130 STEEL TUBE 2X.065 4FT $26.40
It weighs four pounds. Each harness with all straps weighs six pounds.