4 point harness w/ stock seat
06-17-05, 02:09 AM
#30
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Originally Posted by Mint87RX7
that is with belts on loosely, when they are tight and my seat is up they would have to break my shoulders off before they slip over them
In a direct head-on or rear collision, it might stay in place.
What happens if you get hit an at angle?
The resulting forces will cause your body to accelerate at that angle, and it's a very good possibility the belts will slip off.
Remember, G forces are easily in excess of 5 to 10 times the force of gravity.
Your torso might be around 100#, which ends up being 1000#+ *average* weight equivalent.
Instantaneous spikes can go 20 to 50 times, which means the belt has to handle a spike of maybe up to 5,000 lbs.!
PLEASE, I beg you to talk to a shop that specializes in safety equipment or racers with extensive experience.
They will tell you the same thing.
If not, contact Racer Wholesale or the guys at Bell Motorsports.
One last question...where are the belts secure to?
Ideally, the belt needs to be secure to a point (or points) that are directly lateral from the point they exit the seat.
Roll cage cross bars specifically for this purpose are positioned about shoulder height behind the seat.
Are you mounting them to the floor???
This is a big no-no.
-Ted
06-17-05, 02:16 AM
#31
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Originally Posted by 37FC3S
If you get a rollbar or cage you should get a "SA" rated helmet not a "M" rated helmet. A "SA" rated helmet is designed for multiple impacts against a rollbar or cage. The "SA" will also have a Nomex liner.
06-17-05, 08:57 AM
#32
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Originally Posted by RETed
First of all, you are only fooling yourself.
In a direct head-on or rear collision, it might stay in place.
What happens if you get hit an at angle?
The resulting forces will cause your body to accelerate at that angle, and it's a very good possibility the belts will slip off.
Remember, G forces are easily in excess of 5 to 10 times the force of gravity.
Your torso might be around 100#, which ends up being 1000#+ *average* weight equivalent.
Instantaneous spikes can go 20 to 50 times, which means the belt has to handle a spike of maybe up to 5,000 lbs.!
PLEASE, I beg you to talk to a shop that specializes in safety equipment or racers with extensive experience.
They will tell you the same thing.
If not, contact Racer Wholesale or the guys at Bell Motorsports.
One last question...where are the belts secure to?
Ideally, the belt needs to be secure to a point (or points) that are directly lateral from the point they exit the seat.
Roll cage cross bars specifically for this purpose are positioned about shoulder height behind the seat.
Are you mounting them to the floor???
This is a big no-no.
-Ted
In a direct head-on or rear collision, it might stay in place.
What happens if you get hit an at angle?
The resulting forces will cause your body to accelerate at that angle, and it's a very good possibility the belts will slip off.
Remember, G forces are easily in excess of 5 to 10 times the force of gravity.
Your torso might be around 100#, which ends up being 1000#+ *average* weight equivalent.
Instantaneous spikes can go 20 to 50 times, which means the belt has to handle a spike of maybe up to 5,000 lbs.!
PLEASE, I beg you to talk to a shop that specializes in safety equipment or racers with extensive experience.
They will tell you the same thing.
If not, contact Racer Wholesale or the guys at Bell Motorsports.
One last question...where are the belts secure to?
Ideally, the belt needs to be secure to a point (or points) that are directly lateral from the point they exit the seat.
Roll cage cross bars specifically for this purpose are positioned about shoulder height behind the seat.
Are you mounting them to the floor???
This is a big no-no.
-Ted
06-17-05, 09:03 AM
#33
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Originally Posted by Mint87RX7
so these nice, wide, tight fitting belts will slip off in a side impact but my skinny little stock belt on one shoulder will hold me just fine? They are SFI rated, they can handle the G's.
-Ted
06-17-05, 02:53 PM
#34
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I have heard that some "M" rated helmets are just "SA" rated helmets without a Nomex liner. I think if you where racing or autocrossing, a "M" rated helmet would still fail tech inspection if the rules state a "SA" helmet is required with a rollbar or cage.
06-17-05, 03:48 PM
#37
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People were talking about the lower belts riding up and causing injuries to your gut area. If you were to buy seats that had 4 slots for belts IE two for teh shoulder straps and 2 lower slots for the lap belts would that negate the lap belts riding up?
06-17-05, 03:51 PM
#38
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ive never seen seats with slots for the lower belts. you just need to make sure that you have the lower belts mounted at the right angle to keep them from moving, usually like a 50* angle. they ride up because when you tightedn the shoulder belts it pulls that lap belts up, you should have the lap belt tighter than the shoulders anyway so they wont move.
06-21-05, 05:09 PM
#39
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i just went to pepboys todat and i saw a racing seats with the slots for the lap belts and a hole for the crauch strap each seat was 90 bucks with a universal slider included