Finally looks like there is a proper bolt-in roll bar solution!

[OkieSnuffBox]

No diagonal in the main hoop down, what's up with the splices in the main hoop to floor tubes, no X or Nascar bars for the doors? There doesn't seem to be something from the main rear hoop coming forward to come down the A pillars, rear down tubes aren't tied into the fender structure with plinth boxes?

Is that even DOM tubing?

EDIT: That's a drag cage, not a road cage, isn't it? But seriously those splices (for no apparent reason) are incredibly suspect.

[Sammakko]

Originally Posted by mrk1

Proper and bolt in are not words that should go together when talking about a safety device like a roll bar.

in many ways, this is the belief.

consider the damage done to your very thin sheet metal of your car, caused by the heat of welding..

properly placed landing points for your cage, coupled with large backing plates and proper hardware, has been proven to be very strong.

look up HARDDOG (bethania garage) for more info.

[gatorac]

The mounting set up for the Hardog bar and the BRZ bar in the pic aren't even close. I hope that's just a stock photo and not what the mounting plates actually look like. I can't think of anything on the floor of my BRZ strong enough that tiny plate wouldn't push through in a rollover. Who wants to test it?

Having said that, I believe in a typical HPDE we are far more likely to hit something head on or with the side of the car than to roll over. Get a HANS and make sure that your roll bar is padded with SFI padding anywhere that your helmet might come in contact with it. If your are using a harness with no HANS, well that's just stupid, #3 wants to have a talk with you.

Invest in your safety gear as if your life depends on it.

[philooo]

I am curious to see more on the spencer fabrication cage.
He seems to be a knowledgeable guy , hopefully he will chime in , about his bar location decisions @Spencerfabrication

[Sammakko]

Originally Posted by philooo

I am curious to see more on the spencer fabrication cage.
He seems to be a knowledgeable guy , hopefully he will chime in , about his bar location decisions @Spencerfabrication

i too am curious about the metal splice in the middle of the door bar...

[mrk1]

The splices are to make the door bars removable for daily use, yes its a street/drag car and yes it is 0.120 DOM tubing fully tig welded. The main structure is welded in while the door bars bolt in and out.

NHRA does not require diagonals at all, the diagonal in the rear and the passenger door bar are more then whats required.

The splices are very beefy interlocking clamps,

http://www.tmrcustoms.com/store/inde...oducts_id=2078

[Sammakko]

Originally Posted by mrk1

The splices are to make the door bars removable for daily use, yes its a street/drag car and yes it is 0.120 DOM tubing fully tig welded. The main structure is welded in while the door bars bolt in and out.

NHRA does not require diagonals at all, the diagonal in the rear and the passenger door bar are more then whats required.

The splices are very beefy interlocking clamps,

http://www.tmrcustoms.com/store/inde...oducts_id=2078

i see. the previous pix were kinda hard to follow.

[mrk1]

Originally Posted by OkieSnuffBox

No diagonal in the main hoop down, what's up with the splices in the main hoop to floor tubes, no X or Nascar bars for the doors? There doesn't seem to be something from the main rear hoop coming forward to come down the A pillars, rear down tubes aren't tied into the fender structure with plinth boxes?

Is that even DOM tubing?

EDIT: That's a drag cage, not a road cage, isn't it? But seriously those splices (for no apparent reason) are incredibly suspect.

Hold your horses there, the entire cage was built to meet customer requests as well as the rule book, street/strip NHRA approved. Door bars are removable to make it more daily livable.

The rear bars go straight to the floor on the "frame rails" in front of the rear shock mounts. Plinth box's are not necessary in the slightest, they are simply a tool used in cage construction. The box's are collapsed during welding so the cage can be dropped down and the top accessed. The same can be accomplished by punching holes in the floor but thats for full cages, this bar comes out the door so I welded it out side the car. I actually try to avoid plinth box's in my cages as I find they get in the way of seat mounting in small cars and a box at the A pillar gives a nice edge to bang your ankles on.

This roll bar is really straight forward.

[FRS Justin]

Originally Posted by OkieSnuffBox

No diagonal in the main hoop down, what's up with the splices in the main hoop to floor tubes, no X or Nascar bars for the doors? There doesn't seem to be something from the main rear hoop coming forward to come down the A pillars, rear down tubes aren't tied into the fender structure with plinth boxes?

Is that even DOM tubing?

EDIT: That's a drag cage, not a road cage, isn't it? But seriously those splices (for no apparent reason) are incredibly suspect.

I should have been more clear on my application for drag racing and that I requested removable door bars for my daily driving. Spencer Fab does top quality work with premium materials or I wouldn't have used them.
I met Mark the owner and he's a stand up guy. I feel confident that if I need a cage which I hope I don't that it will keep me safe and perform it's job flawlessly. I don't fly by night and skimp on safety items!!!

[Sammakko]

Originally Posted by FRS Justin

I should have been more clear on my application for drag racing and that I requested removable door bars for my daily driving. Spencer Fab does top quality work with premium materials or I wouldn't have used them.
I met Mark the owner and he's a stand up guy. I feel confident that if I need a cage which I hope I don't that it will keep me safe and perform it's job flawlessly. I don't fly by night and skimp on safety items!!!

you should totally try out racing with turns too!

[FRS Justin]

Originally Posted by Sammakko

you should totally try out racing with turns too!

I thought about building a SCCA car next year, who knows I still might.. Right now I'm focused on getting a FA20 in the 9s then who knows whats next lol

[Sammakko]

Originally Posted by FRS Justin

I thought about building a SCCA car next year, who knows I still might.. Right now I'm focused on getting a FA20 in the 9s then who knows whats next lol

i applaud your efforts!

i totally don't get drag racing, but i understand that folks spend a ton of money on it, so i respect that part.


i'm slow at autocross, but i've decided that 45 seconds of adrenaline is way more betterer than 14 seconds of straight line sleep (i'm poor, i won't build a 10second anything)

[FRS Justin]

Originally Posted by Sammakko

i applaud your efforts!

i totally don't get drag racing, but i understand that folks spend a ton of money on it, so i respect that part.


i'm slow at autocross, but i've decided that 45 seconds of adrenaline is way more betterer than 14 seconds of straight line sleep (i'm poor, i won't build a 10second anything)

I just posted some pics on my build page check it out


FT86PROJECT9S

[mrk1]

I never got drag racing either till I got to know FRS Justin. Now I want to give it a try, and there is a strip 20min from me