i already lost weight in those areas. The bars will be ran from under the axle to about the rear of the cab. so 6-7 ft
aluminum DOM
- Thread starter crabbelle
- Start date
i already lost weight in those areas. The bars will be ran from under the axle to about the rear of the cab. so 6-7 ft
Do you mean 7075?
I have used 2" 7075 for an adjustable track bar and some ladder bars on a different truck that I have and have seemed to hold up fine. I like the looks of them better then DOM as I turned the ends down to the size of the hemi joints. If I remember right 2" 7075 what about the same prive as DOM after you weld the thread ends on. With the 7075 you just need to drill and Tap for what ever size joints your using.
Mike
dvst8r
Unobtainium
LOL, yes a little too fat in the fingers on the keyboard. Good catch.
nwpadmax
Turbo Geek
OK, in a street app, maybe OK.
Not for sledpulling! I have yet to see it for myself, but some people claim to see flex in my 2" square x 1/4" wall tubes...and the section modulus and modulus of elasticity are FAR higher in my setup....so if mine are "borderline," then the aluminum won't even be close, not by a long shot.
Cquestad....compressive stresses are fine but you are totally glossing over the slender column buckling mode. If you know those calcs then it should be obvious.
Hurley
BLAKLUNG
This. we are not considering ideal cases here.
Either way, why not ditch the leaves and add a triangluated 4-link with coilovers????
i really dont wanna mess around with another 4 link application
zstroken
For $$$ your name here
Why will a 70 live in most street apps, and an 80 is just under a matter of when if used to pull? Remember pulling on some tracks is just spinning them in sand. Others they are hooked up considerably harder.
That arguement is pointless...I will cave and say they are both hard on axles.
My daily driver is not exactley typical...1000 hp on 37x13.5's. A 70 would not live long for that application either.
If it buckled enough to be visible...a slender element is already "almost colasped".
I will run some calcs manana...
Like I said before....I can break 15k joints (rated in tension...only god knows how strong they are in compression) with measly 1.5 inch sch 10 sa-53 pipe...I think 2 in aluminum will be fine with better joints...or less than 1000 hp.
My daily driver is not exactley typical...1000 hp on 37x13.5's. A 70 would not live long for that application either.
If it buckled enough to be visible...a slender element is already "almost colasped".
I will run some calcs manana...
Like I said before....I can break 15k joints (rated in tension...only god knows how strong they are in compression) with measly 1.5 inch sch 10 sa-53 pipe...I think 2 in aluminum will be fine with better joints...or less than 1000 hp.
nwpadmax
Turbo Geek
Yeah. I thought you had a pretty stout truck.
Buckling turning into collapsing - one factor is yield strength...mild steel and aluminum alloys can be in the same ballpark if you know what you're buying.
Another factor is what other constraints come into the picture...you can flex a bar but if the leafs are clamped and pick up some of the load, then you can have limited buckling if you don't get it hopping in the process.
Just for discussion purposes:
2" OD x 0.25" wall round tube: I^4 = 0.53
2" sq. x 0.25" wall square tube: I^4 = 0.91 (1.7X)
I an NOT saying anyone is FOS...good discussion though, us neanderthals are always looking to move weight forward
nwpadmax
Turbo Geek
When you have a Chinese teaching assistant lecturing Engineering Mechanics 101, Engrish worked out good enough LOL
Here is the skinny...or should I say the slender?
48 inch long bar...compression only (means a rod end at either end)
SA-53EB (black carbon pipe)
1.32 od .133 wall 5k allowable
1.66 od .140 wall 9k allowable
1.99 od .144 wall 12k allowable
2.375 od .154 wall 18k allowable
6061 alum tube
2.00 od .250 wall 12k allowable
6061 alum pipe
2.375 od .150 wall 13k allowable
Use what you want...just weld it right!
This wall all conservative ASD...
48 inch long bar...compression only (means a rod end at either end)
SA-53EB (black carbon pipe)
1.32 od .133 wall 5k allowable
1.66 od .140 wall 9k allowable
1.99 od .144 wall 12k allowable
2.375 od .154 wall 18k allowable
6061 alum tube
2.00 od .250 wall 12k allowable
6061 alum pipe
2.375 od .150 wall 13k allowable
Use what you want...just weld it right!
This wall all conservative ASD...
zstroken
For $$$ your name here
Doesn't tell all
Coming from an electrical engineer, I have reviewed project print packages prepared by PE's that I could have given to an electrician and had used less red ink marking them up. Just saying.