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Tue May 05, 2009 8:07 pm

Like this

Tue May 05, 2009 8:12 pm

so if i add the b-pillars to box out the x-bracing behind the seats and add to the roof x-brace turning it into an asterisk , could i skip the additional a-pillars (that would hinder entrance/exit). are adding gussets to the top front corners of the cage recommended in addition to this?

Tue May 05, 2009 8:14 pm

It looks good, but dont know the answer to your question though, sorry.

Tue May 05, 2009 8:44 pm

i have seen diagonal braces in the windshield area of offroad racers, trophy trucks and even rock crawlers. do yall think this would limit visiblity too much for him? this would add center strength to the center of the front of the cage. your doing a great job on the rebuild plumberbill.

Tue May 05, 2009 9:47 pm

plumberbill wrote: so if i add the b-pillars to box out the x-bracing behind the seats and add to the roof x-brace turning it into an asterisk , could i skip the additional a-pillars (that would hinder entrance/exit). are adding gussets to the top front corners of the cage recommended in addition to this?

yeah, it should work out better that way anyway.

Wed May 06, 2009 7:27 am

diagonals in the center windshield would be nice but would really hinder line of site.

Wed May 06, 2009 8:37 am

Hampered vision or no vision at all.... You already walked away once.....

I think in time you will find that visually any bracing in windshield area will become invisible as you get uses to driving new enhanced roll cage design.... Serious off road boys and girls seem to adapt to it...

Dale

Wed May 06, 2009 8:39 am

HILLAHOLIC wrote: Like this

Also carry down bars through to lower frame rails...

Dale

Wed May 06, 2009 9:07 am

dustymojave wrote: I was actually referring to clearance to vertical bars before. The B pillar in particular. It's amazing what kind of gyrations your head can do in a crash.

Yeah. Sickening to watch.

Here:

http://www.youtube.com/watch?v=bk6HV-3iyi8&feature=related

That's with a 5/6 point harness! :!:

plumberbill wrote: so if i add the b-pillars to box out the x-bracing behind the seats and add to the roof x-brace turning it into an asterisk , could i skip the additional a-pillars (that would hinder entrance/exit). are adding gussets to the top front corners of the cage recommended in addition to this?

Yeah, I think this should be enough. Obviously, more is better, but I think the B pillar would contribute more than a second A-pillar.

I've always added gussets up there. One thing that I would do, to keep the weight down and room up, is use 1" tube for the corner gussets. No need for 1.50" 0.120" wall DOM tubing for corner gussets.

plumberbill wrote: diagonals in the center windshield would be nice but would really hinder line of site.

Up to you. They're pretty helpful. As long as you're looking far enough ahead, those bars shouldn't hide anything. Just make sure to use 1" tubing instead.

Dale M. wrote: Also carry down bars through to lower frame rails...

Dale

Yep. Any tube that intersects with another tube should be "backed up" on the other side, if possible.

BTW, I think I'm going to add an x-brace to the main hoop of my 4LWD after seeing this. I wonder how many of us (especially "sand rails") will be revisiting our cages now?

Wed May 06, 2009 9:30 am

[quote="pafree"]i have seen diagonal braces in the windshield area of offroad racers, trophy trucks and even rock crawlers.quote]

that is a very good idea

I don't like how close your head is to the x behind the seats.

Wed May 06, 2009 9:38 am

Just wanted to say thank you for posting this. Its a good eye opener for those people who want to jump on the road before they check their rig. And i hope your friend is ok.

Wed May 06, 2009 10:00 am

Cuog wrote: runslikeapenguin wrote:
make sure your friend scraps this frame if hes going to rebuild the rail. have him keep it on the side of the house as a reminder.

A lot of the frame is just fine, the bottom half is built very well it looks like, and that rear bar looks to be well designed(needs to be replaced though if the tubes got bent).

The cross brace for the windshield was good, but look how low it is, by the time it starts to help the frame is going to be even more squished than it already is. I would pull that brace back some so that it connects to the windshield at somewhere resembling head height or higher to help prevent this from happening again.

Its true that the frame looks just fine, but this falls under the same category as a motorcross helmet in most cases. It may look fine, but once its taken this much stress it needs to be replaced. I've seen A LOT of head injuries on our local motorcross track because a helmet that was "fine" after a bad crash was reused, and then broke from previous stress fracturing. Cages can do the exact same thing. Once tubing has been stressed it can't be unstressed.

Wed May 06, 2009 10:27 am

Mouthy wrote: Cuog wrote: runslikeapenguin wrote:
make sure your friend scraps this frame if hes going to rebuild the rail. have him keep it on the side of the house as a reminder.

A lot of the frame is just fine, the bottom half is built very well it looks like, and that rear bar looks to be well designed(needs to be replaced though if the tubes got bent).

The cross brace for the windshield was good, but look how low it is, by the time it starts to help the frame is going to be even more squished than it already is. I would pull that brace back some so that it connects to the windshield at somewhere resembling head height or higher to help prevent this from happening again.

Its true that the frame looks just fine, but this falls under the same category as a motorcross helmet in most cases. It may look fine, but once its taken this much stress it needs to be replaced. I've seen A LOT of head injuries on our local motorcross track because a helmet that was "fine" after a bad crash was reused, and then broke from previous stress fracturing. Cages can do the exact same thing. Once tubing has been stressed it can't be unstressed.

unless you have a really really big oven :D

Wed May 06, 2009 1:21 pm

enfield wrote: I just found my new screensaver, oldschool rails are the business!

dustymojave wrote:

Thanks! The original 8x10 glossy is sitting on top of my printer at this moment. 2-Seat Unlimited Class. HDRA Fireworks 250 Barstow, CA, 4th of July weekend 1980.

The 'X' looks good, although for best strength, they should have gone to the bottom rail instead of the top rail. And now the B pillars are needed to finish it. Remember that the strongest geometric shape is the triangle. Always strive to create triangles in the structure. A shoulder bar for mounting harnesses is called for too.

Wed May 06, 2009 1:48 pm

dustymojave wrote: A shoulder bar for mounting harnesses is called for too.

Completely forgot about that! What'd you use to mount them before?

Wed May 06, 2009 8:07 pm

Rockwood wrote: dustymojave wrote: A shoulder bar for mounting harnesses is called for too.

Completely forgot about that! What'd you use to mount them before?

had a bolted in bar that is currently removed. going to put tabs on the x-brace and ditch the bolt in bar. would have liked to run the x-brace to the floor behind the seats but then there would have been no leg room for kids.
put the b-pillars in today and the diagionals below the b-pillars

Wed May 06, 2009 9:36 pm

That looks pretty sturdy to me. Sure is alot better than before.

Thu May 07, 2009 9:21 am

I'd mount the belts as close to shoulder level as possible. Otherwise, in an accident, they'll crush your spine. You could just add some 1" tube across the back at shoulder level.

Otherwise, excellent fab work. You sure got this done in a hurry! :D

Anyone else think this thread should be a sticky?

Thu May 07, 2009 10:37 am

Rockwood wrote: I'd mount the belts as close to shoulder level as possible. Otherwise, in an accident, they'll crush your spine. You could just add some 1" tube across the back at shoulder level.

Otherwise, excellent fab work. You sure got this done in a hurry! :D

Anyone else think this thread should be a sticky?
have no choice but to get it done fast. gotta a big buggy bash on memorial day weekend to go to, and i have 2 other friends buggys in the garage that need my attention.

Thu May 07, 2009 12:08 pm

Yes I nominate this for a Sticky Too! This particular design has come forth from many minds on the Samba and Woodsbuggy.com and it shows what can happen when people with like thinking and a love for a hobby can do. Great job Plumberbill! See ya at Wellsville.