DOM 1&3/4 .120 tube

[Jeremy Gunter]

Alright guys, I called Ryerson in dallas today and got a price of $6.50/ft @80ft ... then I called Trident in Richardson and got 4.50/ft at any length...

anybody have any other suggestions on companies to call?

[ShadowBolt]

Alright guys, I called Ryerson in dallas today and got a price of $6.50/ft @80ft ... then I called Trident in Richardson and got 4.50/ft at any length...

anybody have any other suggestions on companies to call?


Here is the quote I received when I purchased mine.

Tbg price:
DOM steel tbg A513-C1020
1.75" od x .120wall x 24 ft.
96 ft. $3.47/ ft.
1 week ARO

This was from Trident Austin. I buy a lot of material from them but I don't know if this is a good price or not since I masty purchase sheet only. Let me know if you need me to see if I can get it for you at this price.


Jerry

[GlennCMC70]

Jerry's price is really good.
i last paid about $5 per foot.
if you cant get it from Jerry, call your local dirt track supply (chassis builders) and ask if they can get it for you.
be sure they know you have to have DOM and not ERW. make it very clear to them as most of them have never touched DOM.


Jerry, can me and Mitch order thru you any time we need to? i may be ready to build me another chassis and will need about 100 foot.

[donovan]

Last batch I bought was 8 -24' sticks at $5 Ft.

[Jeremy Gunter]

Jerry,

they are shipping the steel from Austin so I guess thats not bad at $80 shipping... would cost me more than that to get down there and back...
Also, I was planning on two staging the cage build, money reasons mainly!

Rosco, this may be a good option for you!!!!!

Glenn, was it you that suggested using 3/16 plate over 1/8 for the feet, and then drilling a star pattern out around the joint and welding inside those?

[mitchntx]

Glenn, was it you that suggested using 3/16 plate over 1/8 for the feet, and then drilling a star pattern out around the joint and welding inside those?

No ... use 3/4" plate ...

[donovan]

Yes 3/4" plates, safety first!

:D DD

[ShadowBolt]

Alright guys, I called Ryerson in dallas today and got a price of $6.50/ft @80ft ... then I called Trident in Richardson and got 4.50/ft at any length...

anybody have any other suggestions on companies to call?


Here is the quote I received when I purchased mine.

Tbg price:
DOM steel tbg A513-C1020
1.75" od x .120wall x 24 ft.
96 ft. $3.47/ ft.
1 week ARO

This was from Trident Austin. I buy a lot of material from them but I don't know if this is a good price or not since I mostly purchase sheet only. Let me know if you need me to see if I can get it for you at this price.


Jerry

[ShadowBolt]

Glen,

I will see if I can still get it at this price and let you know.


JJ

[Jeremy Gunter]

are you serious about the 3/4 plates? with all the smiling going on in here I figured you guys were kidding...

[Wirtz]

I used 6/4" plates myself. Like DD said, got to be extra safe.

[GlennCMC70]

it was me. the rule is .080" plate.
.125 (1/8") should be minimum if i was writting the rules. i think we use 3/16" plate. much harder to work w/, but worth the added effort.

[AI#97]

why are you using .120" wall...? you will be under 3k easily no driver and no gas WITH the cage in the car... Get the .095" and save some weight above the roll center!

I bought 6 ea. 22' sticks and still have one hanging on the fence in the back yard. Burned about 5 feet in scrap, have a 4' piece still sitting in the corner of my garage as a BIG breaker bar and did the loop on the rear bumper to protect the tank.

You might try and work a deal with LAW to get an order done and then go pick it up yourself and split the gas costs with LAW!

[GlennCMC70]

just a data point, my 4th gen is round 2950 dry w/ no driver. it has a .120" wall tube cage. i could have saved about 40lbs w/ an .095" tube cage. but is looks really thin when you look at it. plus, if your not deticated to getting the car light, thats an expensive oooppppsssss.

[AI#97]

just a data point, my 4th gen is round 2950 dry w/ no driver. it has a .120" wall tube cage. i could have saved about 40lbs w/ an .095" tube cage. but is looks really thin when you look at it. plus, if your not deticated to getting the car light, thats an expensive oooppppsssss.

His is currently 3080 with him in it and mostly full tank of gas. Still has a lot he can remove from the car as far as weight goes and he has mentioned going to AI a couple of times so the added 40lbs could bite him in the ass later.

before I put the cage in mine, I think I figured it to be down to 2760 dry even with all the heavy suspension additions. He is just going to have to add max ballast, passenger seat and probably a cool suit setup to get to 3200 post race!

[mitchntx]

are you serious about the 3/4 plates? with all the smiling going on in here I figured you guys were kidding...

Would we lie to you?

[Jeremy Gunter]

Matt, I agree that I could go with the lighter tubing, but the ENTIRE reason I'm not racing on two wheels is because of safety. I think the bigger tubing is probably a good idea, at least thats what I am thinking at the moment... 2 years down the road could be a different story...

Are there rules regulating how large of a plate I can use? for instance, could I use a one inch plate that is 1foot/1foot for each point and still be within specs? I could use a little junk in my trunk, if you know what I mean...

[GlennCMC70]

heres something you guys might want to save.
tube OD / tube wall thickness / weight per foot

1.25 .049 0.629
1.25 .095 1.172
1.25 .120 1.448
1.5 .049 0.759
1.5 .065 0.996
1.5 .083 1.256
1.5 .095 1.426
1.5 .120 1.769
1.75 .049 0.890
1.75 .065 1.170
1.75 .083 1.478
1.75 .095 1.679
1.75 .120 2.089
2.0 .049 1.021
2.0 .065 1.343
2.0 .083 1.699
2.0 .095 1.933
2.0 .120 2.409

[AI#97]

Are there rules regulating how large of a plate I can use? for instance, could I use a one inch plate that is 1foot/1foot for each point and still be within specs? I could use a little junk in my trunk, if you know what I mean...

Leave the sound deadening! I am glad I did because it's too loud in the car as it is!

As far as going crazy with the cage mounting plates, don't get too crazy but nothing says you can't do backing plates on the underside! ;)

[ShadowBolt]

Here is a quote I received yesterday.

Price on the DOM tbg:
1 3/4" od x .120wall x 24' RL $4.09/ ft.,based on purchase of 3 or more
lgths.
7 days ARO
Thank you,
Bruce


Let me know if any of you need some of this and we will see what we can do to get it delivered. They will want to bill me but they may deliver in your area and we could do drop ships.


Jerry

[michaelmosty]

Interesting info. Glenn. Looks like for an "average" 85' cage you will save 35 lbs. with the .095 tube. Interesting.

[GlennCMC70]

Nick R saved 45lbs on his new cars cage. we used something like 114' of tube.
wonder if we will ever see it race? :wink:
come on Nick - gitter done!

[Fbody383]

Are there rules regulating how large of a plate I can use? for instance, could I use a one inch plate that is 1foot/1foot for each point and still be within specs?


15.6.14 Mounting Plates
Each mounting plate shall be no greater than one hundred (100) square inches and no greater than twelve (12) inches or less than two (2) inches on a side. Welded mounting plates shall be at least 0.080-inch thick. Plates may extend onto vertical sections of the structure. Any mounting plate may be multi-angled, but shall not exceed one hundred (100) square inches total including vertical sections. Each mounting plate should have an area of not less than nine (9) square inches.

You can see there is an absolute min and max surface for a plate and a minimum thickness. I specifically asked Jonh Lindsey if a 100 sq.in., or less, plate was ALWAYS legal in CMC and he would not guarantee that it was.

My experience from looking at a lot of the Texas CMC/AI cars is that if it's bigger than 9 square inches and only serving as a tube mount it's probably ok. It's also ok, and recommended, that the plate be tied in to multiple planes, i.e. the floor and rocker panel.

Hope that helps.

[Jeremy Gunter]

can you use different tubing in different areas? For instance, I found a KILLER deal on some 13/4in .120 wall for the Main hoop and down tubes... then can I use the .095 wall for the rest of it? I guess from a safety standard that may not be a good idea...

[AI#97]

can you use different tubing in different areas? For instance, I found a KILLER deal on some 13/4in .120 wall for the Main hoop and down tubes... then can I use the .095 wall for the rest of it? I guess from a safety standard that may not be a good idea...

I believe the rules state that all REQUIRED bars must meet the minimum weight/thickness rule.

However, as a general rule of thumb, you use all the same tubing so one point isn't stronger than the other. Granted, few of us have fully engineered cages however, you don't want to cause a failure elsewhere in an impact.

[GlennCMC70]

there used to be a line in the CCR that all required tubes must be made of the same material and dimensions.
if you start w/ 1.75" .120" tube, you will use it for all bars.

things like Petty bars are not required and therefore you could make it from square tube .090" wall if you wanted.
the above is just one of many examples.
you guys should really stop trying to re-invent the wheel, its just not worth the effort.

[mitchntx]

you guys should really stop trying to re-invent the wheel, its just not worth the effort.

It's like I don't even know you any more ... :?

[AI#97]

you guys should really stop trying to re-invent the wheel, its just not worth the effort.

It's like I don't even know you any more ... :?

No kidding right?! :lol: :lol: :wink:

[Jeremy Gunter]

Just asking questions, using my head, nothing in the rule books say anything against that. Ohh and reinventing the wheel isn't what I am trying to do, but if that was the motto of the world, the wheel would still be wood... :lol:

[GlennCMC70]

<------- digging cammies out of the closet as i type this. combat boots getting a fresh spit polish. a little carbon soot on the front sight post of the M16 just to be sure i dont get a reflection. oopps, did I type that last part?

its all a distraction as i posture myself to win the 2008 Championship as well as the TWS Enduro.
look at my hands.... my hands..... look over here at my hands.....

[AI#97]

its all a distraction as i posture myself to win the 2008 Championship as well as the TWS Enduro.
look at my hands.... my hands..... look over here at my hands.....

Sounds kind of self centered?! Don't you have a ringer coming in to HELP you win the enduro?! :wink: :lol:

[Jeremy Gunter]

Matt you must be kidding. Glenn is a Marine, he is the fittest of the fit, the toughest of the tough, the deadliest of the deadly, the strongest of the strong, the awesomist of the awesome... He must be going IRON MAN!

I know a marine who is riding his Harley from here to Alaska and camping along the way. He is in his late 50's. Thats over 13,000 miles in 4 weeks ON A BIKE!!! Surely he can handle 4 hours in a racecar... :twisted:

[marshall_mosty]

Go for it Glenn, Hoorah!!