Arent they the same bolts that hold the seat belts in place? I would be more worried of the bar yielding
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no, they dont hold the seat bets, but they look bigger/thicker IIRC
anyways, i get what Savagina is saying and it makes sense, it was not engineered to withstand any kind of force front to back, i just never thought of that nor have i ever seen one fail...it makes me curious to know if indeed he is right, id hate to find out this is the case while chewing on my steering wheel after an accident |
Originally Posted by whaaamx5
(Post 216171)
no, they dont hold the seat bets, but they look bigger/thicker IIRC
anyways, i get what Savagina is saying and it makes sense, it was not engineered to withstand any kind of force front to back, i just never thought of that nor have i ever seen one fail...it makes me curious to know if indeed he is right, id hate to find out this is the case while chewing on my steering wheel after an accident I wouldn't ride passenger in a car with harnesses wrapped around it, and if I were teching a car at an HPDE, I'd tell the owner to run his OEM 3-point belts or not run at all. That bar wasn't designed to take the loading forces of a set of safety belts. |
Do not use the cockpit brace as a mounting point for the harness. The cockpit brace is just a length of metal flatstock covered in rubber. It's not designed to take the force of a harness on it during an impact. It'll probably bend or pull those 2 bolts right out. The HD harness bar I run is bolted in 4 places, not 2, and is DOM tubing. That cockpit brace lets go, your in for big trouble. Your face and torso is worth the $100 to get the right piece.
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i understand, and it makes sense, i just never thought of it...it is only a temporary solution
i was considering welding a cross tube on my roll bar, any ideas of how thick i should go? |
1.5" DOM will be fine. Pretty sure that's what HD uses.
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My harness bar on my HDHC is, I believe, 1.75"x.120
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Originally Posted by Savington
(Post 216244)
My harness bar on my HDHC is, I believe, 1.75"x.120
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Originally Posted by cjernigan
(Post 216245)
If i was welding in the harness bar and I had a 1.75" bar like the HDHC i would use 1.75" DOM for the harness bar. If I had a sport model with 1.5 I would use 1.5. If i was building a bolt in harness bar I would use 1.5".
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Yeah, I bent a factory seatbelt brace pulling on it.. I would NOT trust my life to that piece! They make harness bars for our cars roll bars for a reason, if you're not going to use proper safety equipment then use the factory installed stuff.
Reminds me of the honda owner who secured his 4 point harness shoulder straps to the rear seat belt buckle... Read last post: http://www.solsticeforum.com/forum/f42/4-point-21909/ |
fourwhls = LBJay ??
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Originally Posted by mazda/nissan
(Post 216284)
I don't think I'll do much ducking/rolling if i had a 3 pt in anyway, i highly doubt i'm strong enough to overcome the G's of a rolling/flipping car. Besides I'm gonna make a rollbar for the car eventually anyways
w/e. Have fun dying. |
As an FYI - Hard Dog makes a harness bar that attaches the same way as the cockpit brace...except it has two extra bolts running in from the side. A roll bar is not required for this bar...not saying it isnt a good idea though.
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Originally Posted by miatanutz
(Post 216346)
As an FYI - Hard Dog makes a harness bar that attaches the same way as the cockpit brace...except it has two extra bolts running in from the side. A roll bar is not required for this bar...not saying it isnt a good idea though.
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Originally Posted by elesjuan
(Post 216351)
Same said bar is also significantly larger than the cockpit brace is.. specifically designed for harness attachment.
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Some sanctioning bodies may not allow harnesses without a rollbar. I know NASA keeps an eye on that stuff, the events I've attended anyway.
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Originally Posted by Savington
(Post 216332)
You've just been told that running harnesses without a rollbar in an open car is a lot like signing your own death warrant, and you're still going to do it anyway?
w/e. Have fun dying. would there be a safety difference between having a separate bolted harness bar and welding a horizontal bar onto my future roll bar? |
Originally Posted by mazda/nissan
(Post 216452)
and do you really think i'd fair much better if my head was skidding across the pavement with a 3pt. vs 6pt.? as already stated i would never be able to pull my head down in a rolling car anyways. And don't worry about the cockpit brace, i don't have one :td:
would there be a safety difference between having a separate bolted harness bar and welding a horizontal bar onto my future roll bar? Don't use any harness without a true roll bar.. it's simple really and makes good sense. If you do decide to go with a harness and no roll bar please keep a camera running i'd like your skull pop like a squished M&M if you ever roll over. Make sure you put in your will that you want the video posted on youtube so other ricers won't make the same mistake. KTHNXBYE |
probably not, i plan on welding something to my roll bar
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Originally Posted by MX5-4me
(Post 216460)
You wouldn't have to fight it depend on which way you were rolling. I’d rather have a chance of being able to get out of the way rather than no chance at all. You would be surprised what a human can do when the adrenaline get's pumping. You are getting some good advice here take heed.
Don't use any harness without a true roll bar.. it's simple really and makes good sense. If you do decide to go with a harness and no roll bar please keep a camera running i'd like your skull pop like a squished M&M if you ever roll over. Make sure you put in your will that you want the video posted on youtube so other ricers won't make the same mistake. KTHNXBYE whaaamx5, i'm pretty sure bolts would be safe enough, considering i may even buy my own roll-bar. I am pretty certain that i don't have to worry about
Originally Posted by Savington
(Post 216123)
1. It's bolted down with two bolts, and the harnesses pull in the wrong direction, which means those bolts will just bend. Bolts are strong in the direction they apply force, not perpendicular to that direction.
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