Quote:
Originally Posted by Hillbilly_Delux
The "pressure" on the bar is caused by the weight of the truck. And the weight of the truck is always the same....no matter the height.
So, here's what we've got to work with:
The weight of the truck is what twists the bars.
The "spring rate" of the torsion bar determines how much the bar will twist before it supports the truck's weight.
Soooooo.....since the weight of the truck can't change.....and the spring rate can't change......there is no way that the "pressure" on the torsion bar can change.
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ok... I think I understand that, makes sense.
Quote:
Originally Posted by Hillbilly_Delux
Are you still with me? So, I guess now you're wondering........ since the "pressure" on the torsion bars is always the same........what determines ride height??
Well, it's the same principal as putting a block underneath your leaf spring. No matter if it's a 2 inch block or a 6 inch block, the "pressure" on that block is always the same. But, on the front.....this "block" is threaded and has a bolt head on it.
When you turn that adjustment screw, all you are doing is putting a taller "block" between torsion key and the cross-member.
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ok, but then why would a "re-indexed" torsion bar key change the ride height(I do understand the correlation between the key's index and the adjuster bolt and realize that they do the same thing, just compound on eachother). But when adding this "block" the torsion bars location doesn't change, still somes through the same hole in the crossmemmber, not 2"-6" lower.
So are you saying that the bar isn't twisting at all, that it just pushes the truck up (not the a-arm down,
) and the bar still basicly remains, un-twisted with no "pressure" other than just holding the weight of the truck, same as it was doing before cranking the bolt?
Quote:
Originally Posted by Hillbilly_Delux
Well, it's after 4am and I gotta get some sleep. You brought up a lot of good points....such as the ride being worse and the suspension not moving much when you put a jack underneath it. You are correct about that, but the reason isn't exactly the torsion bars.
With this in mind....I want you to think about what you said about the jack, and lack of up-travel......and see if you can come up with an answer. I'll be back later.
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So does the truck still have just as much travel as it had stock? I can see how it would have less "down travel" as we just flexed the a-arm down at ride height thus creating less "down travel"(assuming there is a max travel measurement from stock, as i know there is, you know what i mean). But so from what I understand from what you are saying the "up travel" measurement(from ride height of course) should be just as much as it was stock
. So why, if there is any less, whould there be a lack of "up travel"?
I would really like to thank you for taking the time to explain this to me and making sure that I, along with anyone else who reads this thread, truely walks away with no questions. I am very mechanical and I had I guess just seen the suspension design and created my own reasoning as to how it worked, so I appreciate you telling me how it actually does.
Anyway, the above are the last of the things i dont understand i think, for a few minutes anyway.
,
SouthernStyle