Re: Anyone see a problem with my rollbars ???
#558717
12/21/09 06:22 PM
12/21/09 06:22 PM
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Joined: Jun 2009
Posts: 429 Sherman Texas
The Shocker
OP
mopar
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OP
mopar
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Posts: 429
Sherman Texas
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Quote:
Aside from all the weld critiques which was very educational, I have a question and am surprised nobody else picked up on it. Are you planning on using a 5 point harness? There could be a major problem. I don't know how tall you are, but if you are planning on routing the shoulder belts through the seat, you will fail. The cross bar cannot be higher than shoulder height and no more than 4 inches below shoulder level. If you are planning on routing the shoulder belts over and around and the racing seat headrest, than you could be ok if it is within the 0 to -4" or 90 degree driver to shoulder belts angle. If not, that bar will not pass. You should really check these measurements while seated to make sure you will be safe. Even if only going to run "low 11's"
On another note, it drives me a little crazy when folks say they are only going to go "this" fast. Guess what, someone that is faster than you will be chasing you one day and all hell may break loose and you are in the cross hairs of the faster car. God forbid you are ever in this situation. Do you want to plan for your car only going so fast, or plan on what could happen and know that you followed the guidelines to make sure you kept yourself safe? If what I said about your belt mounting measurements/angles are off, if your car were to fold on impact, your spine would be compressed/crushed from the shoulder belts down. Other than looking out for you, the bar looks like a job well done. Thanks for asking everyones opinion. If you want me to copy the rollbar and seatbelt sections of the rulebook for you, just drop me a PM -Jason
Im 6'2 and the rules state that the shoulder straps must limt upward and forward motion of the driver.If the seat bar is below my shoulders by a few inches when im seated ,and the seat straps are wrapped around the seat bar ,why wouldnt it limit upward and forward motion ? Yes ,im planning on a 5 point harness as the rules state with a roll bar ...
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Re: Anyone see a problem with my rollbars ???
[Re: wildcargo]
#558718
12/21/09 06:35 PM
12/21/09 06:35 PM
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Joined: Mar 2003
Posts: 337 the netherlands
383duster
super street
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super street
Joined: Mar 2003
Posts: 337
the netherlands
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Quote:
Maybe some certified welders will jump in here also.
Here a certified welder from the Netherlands, vertial up is better than start-stop-start-stop downwards.
The main reason is NOT that downwards welding is not good (lot of wires/sticks these days that only alow you to weld downwards) but every time you start welding you got the most chance at binding folds (sp?)
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Re: Anyone see a problem with my rollbars ???
#558720
12/21/09 09:17 PM
12/21/09 09:17 PM
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Joined: Dec 2003
Posts: 22,722 Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,722
Bitopia
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Quote:
Aside from all the weld critiques which was very educational, I have a question and am surprised nobody else picked up on it. Are you planning on using a 5 point harness? There could be a major problem. I don't know how tall you are, but if you are planning on routing the shoulder belts through the seat, you will fail. The cross bar cannot be higher than shoulder height and no more than 4 inches below shoulder level. If you are planning on routing the shoulder belts over and around and the racing seat headrest, than you could be ok if it is within the 0 to -4" or 90 degree driver to shoulder belts angle. If not, that bar will not pass. You should really check these measurements while seated to make sure you will be safe. Even if only going to run "low 11's"
-Jason
Good eye on the shoulder harness mounting angle , nobody else including me caught it.
If that is your chosen seat, then you have safety problem. I don't know nor care if an inspector catches it or not. If the seat can be raised or another bar added, problem solved. The belted driver is mainly restrained from upward movement by the lap/crotch belt, the shoulder harness is primarily to restrain forward motion of the main mass of the body. The pictured y? belt single shoulder harness ( also nhra declined) seat opening would distort the shoulder harness and or seat, and is way too far down. To low is another topic. Far all this trouble, you do not want your head or body to be hitting this finely welded roll bar in a heavy on track incident, and of course their is resale value to consider.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Anyone see a problem with my rollbars ???
[Re: jcc]
#558721
12/21/09 10:36 PM
12/21/09 10:36 PM
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Joined: Jun 2009
Posts: 429 Sherman Texas
The Shocker
OP
mopar
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OP
mopar
Joined: Jun 2009
Posts: 429
Sherman Texas
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Quote:
Quote:
Aside from all the weld critiques which was very educational, I have a question and am surprised nobody else picked up on it. Are you planning on using a 5 point harness? There could be a major problem. I don't know how tall you are, but if you are planning on routing the shoulder belts through the seat, you will fail. The cross bar cannot be higher than shoulder height and no more than 4 inches below shoulder level. If you are planning on routing the shoulder belts over and around and the racing seat headrest, than you could be ok if it is within the 0 to -4" or 90 degree driver to shoulder belts angle. If not, that bar will not pass. You should really check these measurements while seated to make sure you will be safe. Even if only going to run "low 11's"
-Jason
Good eye on the shoulder harness mounting angle , nobody else including me caught it.
If that is your chosen seat, then you have safety problem. I don't know nor care if an inspector catches it or not. If the seat can be raised or another bar added, problem solved. The belted driver is mainly restrained from upward movement by the lap/crotch belt, the shoulder harness is primarily to restrain forward motion of the main mass of the body. The pictured y? belt single shoulder harness ( also nhra declined) seat opening would distort the shoulder harness and or seat, and is way too far down. To low is another topic. Far all this trouble, you do not want your head or body to be hitting this finely welded roll bar in a heavy on track incident, and of course their is resale value to consider.
Thanks ,but what your eagle eye missed is that im 6'2 /220 lbs and with my helmet on in this car with the seat mounted where i put it(which is basically on the floor),im maybe 3 inches from the roof.I dont plan on using the should strap hole in the seat .I am just going to run the shoulder strap around the seat bar as required and then over the seat ,thus correcting the problem.I look like a giant sitting in the seat of this Dart.The very top edge of that seat is even with my shirt collar .I had my freind take the measurements for the seat bar ,door bars ,main hoop ,etc ,with me sitting normally in the seat with my helment on as the instructions said to.I didnt rely on a hole in the seat to position anything. Your right on the resale thing ,a short man wont fit the car with the seat where i mounted it.I dont think its required to run the seat belt shoulder straps through the seat back ,if it was how do people with factory bench seats or factory buckets and a 5 point seat belt get through tech ? BTW, i dont plan on using that lap belt as its not legal to use a lap belt with a rollbar in any class ,at any speed ...
Last edited by The Shocker; 12/21/09 10:47 PM.
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Re: Anyone see a problem with my rollbars ???
[Re: The Shocker]
#558722
12/21/09 10:49 PM
12/21/09 10:49 PM
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Joined: Jan 2003
Posts: 8,035 Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,035
Tulsa OK
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Not about the bar but you might look at your shifter location again. Pretend your strapped in and see if you can reach up and get it out of park. I had this problem with my last shifter setup. I had to strrreeettttcchhhh when strapped in to take the car out of park, seemed perfectly fine until I put a harness in it.
68 Barracuda Formula S 340
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Re: Anyone see a problem with my rollbars ???
[Re: Bad340fish]
#558723
12/21/09 10:55 PM
12/21/09 10:55 PM
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Joined: Jun 2009
Posts: 429 Sherman Texas
The Shocker
OP
mopar
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OP
mopar
Joined: Jun 2009
Posts: 429
Sherman Texas
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Quote:
Not about the bar but you might look at your shifter location again. Pretend your strapped in and see if you can reach up and get it out of park. I had this problem with my last shifter setup. I had to strrreeettttcchhhh when strapped in to take the car out of park, seemed perfectly fine until I put a harness in it.
Thanks ,and your right,It may very well be a problem with me strapped in the seat to reach the shifter in park.I will check that out.It shouldnt be too hard to move it back a little if it is...
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Re: Anyone see a problem with my rollbars ???
[Re: modelmakerinc]
#558725
12/22/09 09:21 AM
12/22/09 09:21 AM
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Joined: Nov 2004
Posts: 7,274 s.w.fl
bonefish
master
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master
Joined: Nov 2004
Posts: 7,274
s.w.fl
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Quote:
I often wondered why so many people put the switches next to the shifter or on the halo bar in a race car until I strapped myself in and couldnt reach the dash. There are alot of little things you learn as you go.
Not that my opinion holds any authority but I think your roll bar will be fine.
samr thing happend to me,got the whole car wired ,all switches on the dash and the shifter mounted,i really took my time and did a good job.then got straped in and couldnt reach the switches or get it out of park(it was my first race car)BUMMER!!!!
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Re: Anyone see a problem with my rollbars ???
[Re: The Shocker]
#558726
12/22/09 09:24 AM
12/22/09 09:24 AM
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Joined: Dec 2003
Posts: 22,722 Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,722
Bitopia
|
Quote:
Quote:
Quote:
Aside from all the weld critiques which was very educational, I have a question and am surprised nobody else picked up on it. Are you planning on using a 5 point harness? There could be a major problem. I don't know how tall you are, but if you are planning on routing the shoulder belts through the seat, you will fail. The cross bar cannot be higher than shoulder height and no more than 4 inches below shoulder level. If you are planning on routing the shoulder belts over and around and the racing seat headrest, than you could be ok if it is within the 0 to -4" or 90 degree driver to shoulder belts angle. If not, that bar will not pass. You should really check these measurements while seated to make sure you will be safe. Even if only going to run "low 11's"
-Jason
Good eye on the shoulder harness mounting angle , nobody else including me caught it.
If that is your chosen seat, then you have safety problem. I don't know nor care if an inspector catches it or not. If the seat can be raised or another bar added, problem solved. The belted driver is mainly restrained from upward movement by the lap/crotch belt, the shoulder harness is primarily to restrain forward motion of the main mass of the body. The pictured y? belt single shoulder harness ( also nhra declined) seat opening would distort the shoulder harness and or seat, and is way too far down. To low is another topic. Far all this trouble, you do not want your head or body to be hitting this finely welded roll bar in a heavy on track incident, and of course their is resale value to consider.
Thanks ,but what your eagle eye missed is that im 6'2 /220 lbs and with my helmet on in this car with the seat mounted where i put it(which is basically on the floor),im maybe 3 inches from the roof.I dont plan on using the should strap hole in the seat .I am just going to run the shoulder strap around the seat bar as required and then over the seat ,thus correcting the problem.I look like a giant sitting in the seat of this Dart.The very top edge of that seat is even with my shirt collar .I had my freind take the measurements for the seat bar ,door bars ,main hoop ,etc ,with me sitting normally in the seat with my helment on as the instructions said to.I didnt rely on a hole in the seat to position anything. Your right on the resale thing ,a short man wont fit the car with the seat where i mounted it.I dont think its required to run the seat belt shoulder straps through the seat back ,if it was how do people with factory bench seats or factory buckets and a 5 point seat belt get through tech ? BTW, i dont plan on using that lap belt as its not legal to use a lap belt with a rollbar in any class ,at any speed ...
The I guess I incorectly assumed you were the seat pictured as designed, taking the shoulder harness around the outside of a seat is certaintly doable, but may not be ideal, or useful for certain "hans" type neck braces, ie too wide. It seems you addressed the shoulder harness angle/height issues. The "lap" belt I referred to was the lap belt in a 5/6/7 way belt system. And remember, the belts can only hold you as tight as the seat itself is mounted. +
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Anyone see a problem with my rollbars ???
[Re: KMPX2]
#558728
12/22/09 06:01 PM
12/22/09 06:01 PM
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Joined: Jun 2009
Posts: 429 Sherman Texas
The Shocker
OP
mopar
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OP
mopar
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Posts: 429
Sherman Texas
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Quote:
What about the brackets holding the shifter up/ looks like one hard shift and thet would fold like a house of cards.
Correct you are.When the previuos owner mounted that shifter ,it had a bench seat in the car.On the last run i made in October ,i bent the "legs" of that shifter when i shifted it into high gear ,and it turned sideways.I am kinda ruff when it comes to shifting on a dragstrip (as a former 4 spd powershifter).I will be addressing that when i move the shifter back a bit.You certainly have a fine eye my freind ...
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Re: Anyone see a problem with my rollbars ???
[Re: go green]
#2711749
10/31/19 09:53 PM
10/31/19 09:53 PM
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Joined: Dec 2007
Posts: 12,592 Great Neck,LI,new york
hemi-itis
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 12,592
Great Neck,LI,new york
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If the seat does not touch the main hoop I will usually weld on a upper seat mount bracket . This makes the seat more solid and helps the driver feel whats happening with the car. IMO.
That roll bar will pass . <img src="/ubbthreads/images/graemlins/thumbs.gif" alt="" /> That it required!
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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