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Re: Anyone see a problem with my rollbars ???
[Re: The Shocker]
#558681
12/20/09 07:00 PM
12/20/09 07:00 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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The bars coming off the main hoop that are welded to the plate next to the tunnel. I have a concern depending on what type of suspension you go with. These bars should attach above your framerail. The idea is that in a roll over you can shove the main hoop through the plated floor pan. But, when you add the seventh and eighth points and attach to the fram connector, rear frame, leaf spring relocation mount, or ladder bar crossmember you rule this possibility out.
I'm not suggesting you have to remove and relocate the bars. But, maybe you could put a crossmember between frame connectors and loop it under the driveshaft to give these bars something substantial to support the main hoop.
What you have may be perfectly legal. I'm not looking at the rule book right now but the old rules said those extra bars had to connect to a frame member.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Anyone see a problem with my rollbars ???
[Re: Leon441]
#558682
12/20/09 07:16 PM
12/20/09 07:16 PM
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Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
Chassisman
master
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master
Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
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Quote:
The bars coming off the main hoop that are welded to the plate next to the tunnel. I have a concern depending on what type of suspension you go with. These bars should attach above your framerail. The idea is that in a roll over you can shove the main hoop through the plated floor pan. But, when you add the seventh and eighth points and attach to the fram connector, rear frame, leaf spring relocation mount, or ladder bar crossmember you rule this possibility out.
I'm not suggesting you have to remove and relocate the bars. But, maybe you could put a crossmember between frame connectors and loop it under the driveshaft to give these bars something substantial to support the main hoop.
What you have may be perfectly legal. I'm not looking at the rule book right now but the old rules said those extra bars had to connect to a frame member.
Leon
And to fix that he could run another piece of 1 5/8 between the main and the down bars ...then he could tie that bar into the subframe connectors...its kinda a patch way of doing it...but hes WAY too deep into it now.... 
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Re: Anyone see a problem with my rollbars ???
[Re: The Shocker]
#558685
12/20/09 08:02 PM
12/20/09 08:02 PM
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Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
moparguy7074
top fuel
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top fuel
Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
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Quote:
Thanks guys , i feel lots better about it now.I didnt want to get to the track and only to find out it wasnt right .I think im actually good to 10.00 from what i have been told.I think if you have an unmodified floor and firewall an 8 point bar is okay till you get to 9.99...  
Well it might be legal, but would you want to rely on it a 140+ mph? Just my  
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Re: Anyone see a problem with my rollbars ???
[Re: moparguy7074]
#558687
12/20/09 08:25 PM
12/20/09 08:25 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:
Thanks guys , i feel lots better about it now.I didnt want to get to the track and only to find out it wasnt right .I think im actually good to 10.00 from what i have been told.I think if you have an unmodified floor and firewall an 8 point bar is okay till you get to 9.99...
Well it might be legal, but would you want to rely on it a 140+ mph? Just my
Dont ever see me going 140+ on my wallet in this car ,but its nice to know that if i break 11.00 im still good for another second ... 
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Re: Anyone see a problem with my rollbars ???
[Re: TMP66]
#558691
12/20/09 09:31 PM
12/20/09 09:31 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Looking at those welds on the right side support bar it looks like the welder did the on/off on/off of the trigger overlapping spot welds instead of a vertical up weld. Almost no HAZ indication next to the weld.
I hope he didn't use this method on the rear supports at the hoop.
Its called stitch welding.... works fine
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Re: Anyone see a problem with my rollbars ???
[Re: The Shocker]
#558693
12/20/09 09:37 PM
12/20/09 09:37 PM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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great welds the only problem i see what size is it looks like 1"5/8 that is not leagal bar roll bar must be 1"3/4 gage can all be 1"5/8  
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Re: Anyone see a problem with my rollbars ???
[Re: sam64]
#558694
12/20/09 09:49 PM
12/20/09 09:49 PM
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Joined: Apr 2005
Posts: 1,880
USA
Ron Silva
top fuel
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top fuel
Joined: Apr 2005
Posts: 1,880
USA
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I think that roll bar looks great for the time you had and it looks safe enough to me and I think it will pass tech for sure.
But I am going to say something just so others will have the info.
Rule book says the main hoop has to be attached to the "rocker sill". MOST tech's won't ding you on this. But, you want to keep the main hoop from pushing those 6X6 plates through the floorpan.
If you really wanted to make it safer you can add the 2 bars that would go to the top of your frame ties like was mentioned. I personally think it looks fine and will pass tech.
SRT DEMON ONE SEAT
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Re: Anyone see a problem with my rollbars ???
[Re: MR_P_BODY]
#558695
12/20/09 09:58 PM
12/20/09 09:58 PM
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Joined: May 2003
Posts: 961
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TMP66
super stock
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super stock
Joined: May 2003
Posts: 961
.
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Quote:
Quote:
Looking at those welds on the right side support bar it looks like the welder did the on/off on/off of the trigger overlapping spot welds instead of a vertical up weld. Almost no HAZ indication next to the weld.
I hope he didn't use this method on the rear supports at the hoop.
Its called stitch welding.... works fine
Yes, it is called "stitch welding" and in this application it does not "work fine". It should have a proper 'stringer' weld. Stitch weld your new quarter panels, not a roll bar.
Here's some more on the subject....
http://www.millerwelds.com/resources/communities/mboard/archive/index.php/t-5923.html
Maybe some certified welders will jump in here also.
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