Brilliant
New member
b is not the hypotenuse, your math is all wrong.
The 2nd triangles a and b can be directly measured, same as the 1st triangles abc. c of the 2nd triangle then is the root of the sum of the squares a and b.
Last edited:
Toytec Adj Panhardbar Installed
- Thread starter CoMarc
- Start date
b is not the hypotenuse, your math is all wrong.
The 2nd triangles a and b can be directly measured, same as the 1st triangles abc. c of the 2nd triangle then is the root of the sum of the squares a and b.
glenyoshida
New member
I think you might have misread the post but then again I've been wrong before. Would you mind clarifying a bit? What numbers do you come up with?
Last edited:
Brilliant
New member
Nope, I didnt misread it as far as I can tell. The question is how long to make the bar. I concede its late though.... I edited and clarified the above.
I'd rather just jack the vehicle and let it sort itself then punch numbers into my Ti89.
The stock bar doesnt sit level, measure up to the p side bolt from the horizontal of d side bolt, thats b1. Measure the horizontal axle length to the horizontal, that's a1. c1 is the stock bar length, not very useful.
for various lifts its b1 + lift = b2. a2 = a1. c then is the root of the sum of the squares of b2 and a1.
you said: b² is the length of the stock panhard bar 37.0"... b is not the hypothesis in your representation of Pythagorean theorem.
Last edited:
glenyoshida
New member
glenyoshida
New member
OK, thanks, just making sure I wasn't misunderstanding your post.
If letting your suspension hang works for you to set your geometry then cool party, that's probably the best for ya. Sometimes close enough is good enough and over thinking it can turn into a waste of time right?
Brilliant
New member
I spelled it out. You had the right idea to approach it at the computer. I think you just mixed up the b and c terms.
I'm kinda being a technical d ick lately though... so ya.
glenyoshida
New member
BTW since you seem to have a good grasp on the Pythagorean theorem what numbers do you come up with for the length of the adjustable panhard bar on a vehicle with a 3" or 6" lift?
Brilliant
New member
I didnt work it out... but it comes down to this.
-sqrt(a1^2 - [a1+L]^2 - c1) = c2
where:
a1 is the length mentioned above
L is the lift
c1 is the OE bar length
c2 is the bar length for lifted application
check if it makes sense, could be sign errors
system of 2 equations, 6 variables
hit 1 with *-1
axle distance is fixed
add systems
system of 2 equations, 4 variables
define a2 in terms of a1 (a2=a1+L)
c1 is known
a1 can be measured
L is known
solve c2
Last edited:
glenyoshida
New member
?? What didn't work out?
Sorry, probably me not being clear again. I wasn't asking for a new equation just the resultant lengths for what you found an adjustable panhard bar should be for a 3" and 6" lift.
Brilliant
New member
Its not a new equation, its the governing equation using the theorem.
oh... it dawned on me what your issue might be. The theorem is only valid for RIGHT triangles. So you cant solve the equation without a system of 2 equations with a common base, the left right axle distance.
Last edited:
CoMarc
New member
When did this post become a math class? I thought I was done with that stuff back in college... :nerd::lol:
Just kidding, math is quite usefull throughout life if not daily, it seems.
Knight, not sure if this question was directed at me or someone else, but I can tell you I started with a near 5" lift when I first put on the LC coils, but they've settled down to about 3.5 inches (see my lift thread in my signature). I don't need the bar to be extended much, but just enough so that my truck doesn't sway side-to-side when I go over bumps-instead up and down like it should. That's the real reason (at least for me) why I put this adjustable bar in place.
Just kidding, math is quite usefull throughout life if not daily, it seems.
Knight, not sure if this question was directed at me or someone else, but I can tell you I started with a near 5" lift when I first put on the LC coils, but they've settled down to about 3.5 inches (see my lift thread in my signature). I don't need the bar to be extended much, but just enough so that my truck doesn't sway side-to-side when I go over bumps-instead up and down like it should. That's the real reason (at least for me) why I put this adjustable bar in place.
glenyoshida
New member
Sorry bud, don't mean to drag this out. I was just trying to give you the benefit of doubt and wanted actual numbers to reality check. From what I can tell you thought I was using the wrong number for the hypotenuse. Post up your calculations with actual numbers not just the formula that you came up with so we can double check it.
I think you are over complicating things. This is a basic application of the Pythagorean theorem. You don't need two equations with a common base you just need two side lengths of the right triangle. I'm not trying to be a jerk here but post up your numbers or it'll have to be assumed that you made a mistake along the way and haven't caught it yet. The numbers I posted are solid and verify with actual measurements.
Who are you asking? Mine started off around 7" and settled down to 6" but I carry 1500lbs of extra weight with all the armor, tools, etc. I use the 851s that I got from Toytec for my rear coils. I do love those coils. I still get full compression, haven't dropped a coil on the ground, and haven't lost my slip yoke yet. I would like to find shocks that compress more though. I can't hit my bumpstops.
Brilliant
New member
yes, this is what I was hitting on. Your application of side b. You cant use the small triangle to solve this using light height, OE panhard bar, and the new length of the adjustable bar. That triangle is not a right triangle and PT does not apply.
PS this is all a lot of nonsense. I'd just jack my truck up and set it. Measurements is rather silly in this case since there is no compelling reason to do so.
glenyoshida
New member
Brilliant, I think we're going to have to agree to disagree on this one. Thanks for trying to clarify though.
For those of you that might have gotten confused on all this chatter, the numbers listed in my initial reply (copied below) are the correct numbers for your 3rd gen lift height and the corresponding adjustable panhard bar length. You can use them with confidence. If you have any questions on this please feel free to PM me so we can avoid more clutter in the thread. Thanks!
For those of you that might have gotten confused on all this chatter, the numbers listed in my initial reply (copied below) are the correct numbers for your 3rd gen lift height and the corresponding adjustable panhard bar length. You can use them with confidence. If you have any questions on this please feel free to PM me so we can avoid more clutter in the thread. Thanks!
glenyoshida
New member
Kind of a judgement call. To me it's worth having an adjustable bar over an angled stock bar. The Heims are nice because you don't get any bind with flex but you are also preventing a couple of major things from becoming worse.
1. The greater your lift the more your alignment is off and you are tracking more like a crab with an angled stock bar.
2. We already have a problem with the drive shaft pushing into the gas tank skid causing the skid to peel away making it's own problem worse. It also tends to sheer off your zerk fitting and then you have to find a way to remove it so you can still grease your u joints. Lil skips gas tank skids are great for helping this problem. Plus the skids are very well engineered. Best you can buy IMO.
If I didn't have easy access to a welder to make my own panhard drop bracket then I would have the adjustable bar on mine.
I don't think it's necessary but it's like a lot of things when we mod, there's good enough and there's as good as reasonably can be done. It is kind of a vanity point too. When you see a stock bar at an angle you know the owner either didn't know any better, didn't have the tools do mod up a drop bracket, or didn't want to spend the cash to set the geometry back to correct with an adjustable bar.
Oh, or was too lazy to get it done yet
I have a 3" drop bracket but need to make an 2nd bracket to extend it another 3". It's on the list of things to do but you know how those lists are. They are always long and the older the list the more expensive or time consuming the remaining stuff is.
