Shoulder Harness
12-05-2004, 11:59 PM
#1
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Join Date: Dec 2002
Location: Wilm, DE
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Shoulder Harness
Iv been seeing a couple cars around here that have 3 point (i think) harness's that use the stock seats and no rollbar. there is a strap that goes from the harness to a mount on the rear deck behind the rear seats. does anyone know what im talking about? are they safe? good for autoX maybe just not daily driving?
12-06-2004, 11:41 AM
#2
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Re: Shoulder Harness
You probably mean a "4-point" harness, consisting of a left and right lap belt, and left and right shoulder belts. Someone makes a cross-bar that fits in behind the seat, and allows you to bolt the shoulder straps in, or you could mount some sort of an anchor to the "package shelf", much to the consternation of any back seat passengers. I would also question the ultimate strength of an anchor through the thin sheet metal above the fuel tank.
You also might want to consider the fact that most aftermarket "harnesses", including the highest quality Simpson 6-points, are not DOT approved, and hence not legal for street use, even though though they are SFI-certified for top fuel dragsters.
You also might want to consider the fact that most aftermarket "harnesses", including the highest quality Simpson 6-points, are not DOT approved, and hence not legal for street use, even though though they are SFI-certified for top fuel dragsters.
Last edited by Injuneer; 12-06-2004 at 11:45 AM.
12-07-2004, 04:55 PM
#3
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Location: Friendswood, TX, USA
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Re: Shoulder Harness
Well you can get by the illegality, by leaving your stock belts in for regular driving. Go to one of the WEB sites, like Simpson . Most have instruction on how to set these up. If you have them at the wrong angles you can do more damage to your body than good.
12-08-2004, 12:30 PM
#5
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Location: Friendswood, TX, USA
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Re: Shoulder Harness
Yes, but in doing so you probably now have a strap that is to long. I think a harness bar is probably the minimum you need for correct installation.
If the shoulder belts are to long, attached to the shelf or layed over the harness bar and attached to the floor, there is a good chance that they will stretch to the point that your face will hit the steering wheel. if you don't have them restrained by a clip on the bar they can also slide side ways off your shoulders, particularly if you don't have a racing seat.
The belts should be at shoulder height and within a few degrees of straight back, and as short as possible. To much of a down angle will cause compression of the spine in an accident. The belts should also be restricted from moving off the shoulders, either by restaining them at the bar or running them though hole in the seats.
If the shoulder belts are to long, attached to the shelf or layed over the harness bar and attached to the floor, there is a good chance that they will stretch to the point that your face will hit the steering wheel. if you don't have them restrained by a clip on the bar they can also slide side ways off your shoulders, particularly if you don't have a racing seat.
The belts should be at shoulder height and within a few degrees of straight back, and as short as possible. To much of a down angle will cause compression of the spine in an accident. The belts should also be restricted from moving off the shoulders, either by restaining them at the bar or running them though hole in the seats.
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