Mobtown DIY Sliders

I felt I read something by @Mobtown Offroad like it’s the same strength but lighter for close to the same diameters... that’s not an exact quote, so take it with a grain of salt haha

 

So if that’s the case and square is superior, then why isn’t it used everywhere? If you did a quick google search and some reading on the subject, then enlighten me?

 

I asked the same question to him, and again, I forget the response. We can let him chime in.

 

Some vendors use 1.75" OD x .120" wall round tube everywhere, some use a mixture of that and 2" x .125" wall square tube. The difference is cost and weight. The round tube is lighter, you pay for steel buy the pound, you ship products and their rates are based of the weight. The lighter the product, the cheaper to build and ship which is why some go with round.

EDIT: You also get better pricing when buying volume. So if you buy 100 sticks of round vs 50 sticks of round and 50 sticks of square, you will spend less buying the 100 sticks of round per pound.

 

www.rsgoffroad.com has 3rd gen sliders in stock, and they are $100 off for April!

 

http://www.4xinnovations.com/Rock-Sliders_c_12.html

Got a set for mine for just a hair over $300 to my door. $100 to have DYF weld em to the frame. Roughly $500 finished total if you include the fuel to drive to my friend's place and beers and primer/paint.

 

Square tube is heavier than round tube when comparing 2" x .125" wall square vs 2" x .120" wall round but it is also approx 60% stronger in regards to deflection.

When applying forces against the two shapes, round tube will "egg" after it reaches the point where it will no longer deflect and square tube the sides will crush inward or outward after in reaches the point where it will no longer deflect. To fail these two materials after deflection, the round will deflect more and will fail before the square.

A simple answer, look at your trucks chassis, look at an engine hoist, look at trailers. All items that are expected to see high amounts of force, all items built from square/rectangle tubing. Again, a lot of this has to do with cost. It is easier to work with square tube in a manufacturing sense and for the most part, it is less expensive per pound over round but it is heavier.

 

@JLee did a write up somewhere, I came across it on TW one day and read it but now I can't find it but it went in to way more details and was spot on when comparing materials. He explains the differences between square, round and DOM round and why he uses what he uses which all made perfect sense in the materials world and applications that these materials are being used on.

 

Here you go https://www.tacomaworld.com/threads/tubing-explained-dom-hrew-crew-erw.186008/

 

There it is!

 

Damn, beat me to it.

https://www.tacomaworld.com/threads/tubing-explained-dom-hrew-crew-erw.186008/

 

Round tubing is definitely easier to bend and work with, I imagine this is a major contributor as to why a lot of manufacturers use them on their sliders. The square tubing is easier to use to mount to the frame, and have the round tube mount to. Round tubing is stronger that's why roll cages are made from round tubing, but it is easier to mount things to and deal with square tubing. There's trade offs for both and each situation will warrant different results.

 

Mobtown said it just right. For a given general bending strength along the strong axis, the square tubing will be stronger than the round tubing for same general dimensions (thickness similar, and diameter same as tubing width), but the square will be heavier than the round.
For size/diameter limited applications, the square will absolutely be stronger. Obviously a solid rod will be stronger than the square tubing, but that will be insane weight...

Here is some data for 4130 N tubing. Keep in mind I don't believe anybody uses 4130 N for this type of application, but it is the data I have on hand.

Lets just compare round 2"Dia x 0.120" wall and square 2" x 0.120" wall (with rounded corners), just as a talking point. (Inertia in this case tells us the bending resistance of the section)

Round Square
Section Inertia I (in^4) 0.3144 0.4859
Wt/ft (lb/ft) 2.409 2.900

So just from that data you can see that for a given 2" size tubing with a given 0.120" wall, the square tubing will have larger bending stiffness and be heavier. (The square also has flat sides so it makes attaching items to it generally easier).




Now that data alone doesn't tell what happens with the section in bending due to plastic bending (Cozzone Bending or Bending K factor), but this isn't a structures class, so we will just stop there for now unless somebody asks more questions.

(Note, round tubes have a larger plastic bending K factor than the square tube)

 

@Mobtown Offroad can you verify that this http://mobtownoffroad.com/product/2005-toyota-tacoma-diy-rock-sliders/ fits on a 3rd gen?

 

They do. The difference is in tubing length for legs from attachment plates to tube that go under the pinch seam. Flanges work on all Tacoma’s from 2005 to now.

 

Sorry to jump on your thread, but I'm also redoing a 92" slider myself made and bought from RRO.(smh) Going to chop off the existing leggings and make/weld my own. Going to make legs the same 2" round length at 7-7/8" counting in the legplates .25" thick.
Btw its going to be bolt on.

My ? is, Is it better to run 3 or 4 legs on a slider this long 92" ?
Can I run independent footing and work the same way or is it better to use something like @Mobtown Offroad 2005+ DIY rock sliders mounting kit being that it is a continuous running bracket for 3 of the legs ?

My main concern is the strength and integrity of running a 3 or 4 leggings bolt-on independently.

TIA for any info and advise

 

4 legs minimum.