Thread: center of gravity

You're plotting something evil again!

I don't have the answer, but I though that a rule of thumb was the top of the gearbox or some height through the engine.

Yeah the general rule of thumb is top bolt on bellhousing, but when i talked to a mate about it his gut feeling was it was lower,enough to make a difference in calcs. Now when this guy says something, i listern. we were ment to tip my truck over with his 7t tractor last time i was out his way, but ran out of time.............next time i guess.

Serg

No thats cool, I'd bet your mate is right too.

I guess the rear of a ute and the CofG would be somewhere between the top of the diff and the chassis depending on the tray construction. You'll probably only ever really know with your truck by pulling it with the tractor.

he figured just above the rear ball joint, i thought that was a bit low but he knows wayyyyyyyyyyyyyyyyy more than me .

Originally Posted by uninformed

Yeah the general rule of thumb is top bolt on bellhousing, but when i talked to a mate about it his gut feeling was it was lower,enough to make a difference in calcs. Now when this guy says something, i listern. we were ment to tip my truck over with his 7t tractor last time i was out his way, but ran out of time.............next time i guess.

Serg

Hiya,

How to you get to know what the COG is by using a tractor? I am assuming you lift it up from one side to 'tipping' point but I cannot figure out how from this you calculate or otherwsie estimate where the centre of gravity is...

Figure it'd be useful to know before I try it at home...

Cheers,

Phil

get some masking tape and tape a center line down the middle (center of wheel track) of the grill. Lift side of truck untill you fid the tipping point, remember to put some safety straps to stop it going completely over, or just make sure you lift the good side with dinged side down

whilst in postion, take a plumb bob from contact patch of front tyre on the ground. where it interescts the center line will be the height of COG when back on all fours.

level ground is improtant. also lock out the steering ..... DO ANY OF THIS AT YOUR OWN RISK

Good stuff, as soon as I read where you put tape on the grill it all made perfect sense so is all good. I also have a 110 with trayback and would be interested in assessing where COG is - empty and loaded with camping stuff on the back. Near neighbour has a large excavator and so we may use this to lift it one day when he is less busy, otherwise it'll be a chain-block from the gum tree

Cheers,

Phil

gum trees are structuraly reliably UNRELIABLE regardless of branch/trunk dia.