Use Your Leg!
Senior User
Joined: Sep 2004
Posts: 385
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From: Missouri
Originally Posted by jroehl
I won't disagree with you on that. But...most (all?) vehicles don't come with a 4-way, just one of the angled jobbies. What you're describing is a leverage situation, and I agree you can apply much more pressure than your body weight that way. I still contend that lifting is the better way to go--straightened arms and lifting the weight with BOTH legs, like a dead lift (the weight-lifting event that reaches the highest weights, other than a squat).
Jason
Jason
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Joined: Feb 2004
Posts: 946
Likes: 4
From: Orange
Originally Posted by jroehl
If you weigh 120lbs, that's the max force you can exert downward, without jumping or bouncing. If you only put one foot on the lug wrench and push down with that leg, you will be putting much LESS force than 120lbs on the lug wrench. By pulling upward, you can control the force more readily as you start to feel it give.
Sorry, dude, you need to take a physics refresher...
Jason
Sorry, dude, you need to take a physics refresher...
Jason
Posting Guru
Joined: Mar 2002
Posts: 1,217
Likes: 0
From: Yelm Washington usa
Originally Posted by wezol5484
Ok, so if 425 newtons is being exerted downwards at an angle of 40 degrees (no 4way lug wrench), how many legs do I have.....
Tic-toc tic-toc...
Tic-toc tic-toc...
dj
Post Fiend
Joined: Apr 2004
Posts: 6,473
Likes: 4
From: Lafayette, IN
Originally Posted by 73Fastbackv10
And you need a physiology refresher. If all the muscles in the human body contracted at the same time, they can lift a bus. By your logic, if you can't push down with at least the same body weight that you have with one leg, then you can't stand on one leg or walk up stairs. You're not hanging dead weight on it, you're applying a force to it. That's what muscles do.
The answer: same as your body weight. The ground is also exerting the same amount of force back on you. Now stand up straight. As your standing up, you're now exerting more than your body weight on the ground, but as soon as you're fully erect, you are back to exerting your body weight on the ground. Try it with an analog scale under you.
My contention is that if you don't hold the lug wrench with your hand, your body weight is the maximum amount of force you can apply to it without jumping on it.
Let's say this is all done straight downward. If you weigh 150 lbs, and do nothing to hold yourself down to the ground or vehicle (something heavier than you), and do not jump on the lug wrench, the absolute maximum force you can apply to the lug wrench downward is your body weight. Period. If you hold on to the lug wrench, that is a different story, as you are now introducing leverage into the equation.
Jason
Post Fiend
Joined: Oct 2002
Posts: 11,314
Likes: 4
Originally Posted by ATC Crazy
I weigh 280. I wont have a problem 
Way to go !!!!!!!!!!!
let's do remember this is a TRUCK forum
let's make it so that I can even understand it !!!
and I'll call u when I need that little extra Ommph !!!
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Joined: Feb 2004
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From: Orange
Originally Posted by jroehl
Ok, stand up, crouch down (bend your knee 90 degrees), then answer me this: how much force are you exerting on the ground?
The answer: same as your body weight. The ground is also exerting the same amount of force back on you. Now stand up straight. As your standing up, you're now exerting more than your body weight on the ground, but as soon as you're fully erect, you are back to exerting your body weight on the ground. Try it with an analog scale under you.
The answer: same as your body weight. The ground is also exerting the same amount of force back on you. Now stand up straight. As your standing up, you're now exerting more than your body weight on the ground, but as soon as you're fully erect, you are back to exerting your body weight on the ground. Try it with an analog scale under you.
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Postmaster
Joined: Mar 2004
Posts: 3,918
Likes: 0
From: Michigan
Guys,I didnt mean to start an arguement.And the correct term for that L-shaped thingy is a Tire Iron,which by the way is the first thing I toss out when I buy a vehicle.In fact,the only thing I use them for is, If I am at home and need to take a tire off of a wheel,two tire irons make great pry tools!A 4way is a wise investment,and if you use it the way I mentioned,your back will thank you when you get older.
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