I can see that you and some other ppl on here have not drove on a sit of bias ply boggers in your life. Boggers will jar your teeth right out of your head so any dampening/balanceing will help.When I had the tire shop spin my tires just to see how bad they were one was 22,one was 18, and the other two were 15
I'll be the first to admit I never took any cl***es influid dynamics - I do oc***ionally try to employ some common sense (doesn't always work I admit that as well) - however in THAT vein -AND ***uming your description is correct that "Centrifugal force will keep the fluid to the outside of the tire" - Which I admit I don't entirely believe just yet - seems to be somewhat dependent on several factors (in my mind) speed, viscosity, temperature, etc - but anyways - let's say your tire was not concentric - wouldn't more fluid be present at the "high side" and if so wouldn't that worsen your problem not minimize it???? My uneducated opinion is that the vibrational forces are still there - the addition of the fluid merely changes the natural frequency - making the vibration to appear to be gone. We don't feel it - therefore it's OK - (sorta like radiation - ok maybe not). No offense intended, but why not jump down from that high horse and help educate us rather than rip on us for our "uneducated tongues" - I mean - for some of us - openly discussing our opinions here IS EDUCATIONAL - minus the fancy diploma and all
Sorry I am not here to offend any one just stating rather jumping down someones neck with uneducated guesses and ***umptions a bit of research may help. I am not claming to know everything just rather not see people get ridiculed for asking a question. Now if the tire is out of round then I believe that the fluid will not work as stated by HemiRambler. As most tires are out of balance due to many different equations such as density or thickness of the rubber in any given area, location of the valve stem, wheel issues, and so on. Some are out of round. For those of us using bias ply tires this is a more common issue. I believe the only way to solve this issue is to have the tires shaved. Our most common out of balance issues is fixable by the use of weights. As I stated before the fluid is not balancing the tire it is simply removing the out of balancing issues or the frequency transferred to the wheels at time of motion. Thus the transferring forces felt from the tire to the wheel and through the car are now minimized.
A small amount of fluid is one thing. The quicker it can accelerate, the less you notice it's there. Ever watch a tractor pull? Watch the stock guys run. They pull the tractor in right out of the shed and run it. Calcium loaded tires for weight.......and those *****es BOUNCE. They start out fine but, once they start to lose traction, gain traction, lose traction.....Let the hopping begin. You guys that are using antifreeze...how much are you using? For the steet, I'll stick to lead weights.
Nope...no boggers, but more than a few bias plies. Radials were just coming on when I put a set of Firestone V1's on the '31...in 1971.
I use it in my off road trucks. there is no real way to balance them as every time you go out a tire slips here or there. I have marked them and they do move. we run the air pressure at around 4 to 8 pounds pressure. I use a pint of this stuff called slime. seals small punctures. then I use a quart of windshield washer fluid, the kind that dosn't freeze. it evaporates and lets the tire sealer work. they are balanced from 0 to 80 mph. the only problem that we have are the flat spots when the trucks sit for a long time. one has 34 inch bias, the other 37 inch bias. Some times we run them to the edge of town at the low pressures to get rid of the spotting. I am not sure why it works. you would think if the tire was traveling in a eliptical travel the fluid would only compound the problem. if it is working as a damper, that is fine with me. the powders, sand, golf balls all break up or clump together. lol the golf balls can make a heck of a noise at low speeds. I would not use oil, as that would make our tires very likely to peal off the rim. That and we air the tires up and down alot. down for the trail and up for the trip back home.
Alright, if I had access to a spin balancer I know what I'd be doing right now. Set up a test with a wheel and tire I know is out of balance, then add the fluid and see what happens. Some body out there wanna settle this? Right now I'm leaning way to the BS side but I'm willing to learn. By the way, I've driven tractors with water ballast in the tires. Damn near killed my self coasting one down a steep hill on the road, (always did want to go faster than I should) seems the faster it went the more out of balance the tires got. I always thought it was the tires, maybe someone can tell me different. Yeah, I know it's a lot more water and bigger tires but shouldn't that be an advantage if this really works?
usually the tractor tires are almost full of fluid. where as the amount I am talking about ends up being about 1/2 deep in the bottom of a 34 inch tire. so the liquid moves out to surround the tire. the tractor tire has a bubble that wants to push its way out vs being near the rim. not sure how to say it. but the bubble of air is what throws the tractor tire into the death bounce. as the tire will not be spinning fast enough to force the air bubble to the center of the rim. or if the tire had no air left in it, it would not bounce. yeh I would love to see it tested on the spin balancer. I can't find a shop that would even put a 37x14.5 x 15 on the machine.
most tractors don't have suspension so the tires make up for the suspension plus thats alot of rubber bouncing down the road. like on a backhoe you get a real bad death bounce but if you slow down or speed up it will go away some times.I've had the front tires on a backhoe off the ground because of bounce.
Old topic, but I'm wondering if anyone has ever put a (p***enger car-)tire on a tire-balancer with fluid inside to check out how effective this method is.
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Yes. It works, ask those that do it. The heavier the material (dry particles or liquid), the better. Liquid is easier to install (valve stem) Liquid sodium chloride is what was used in the 1950s because it weighed almost twice what water does excellent, but epa rules....... In large truck tires they (used to) use lead shot also, but epa might have squelched that practice also, don't know. For the perfect weight, because there is a point where any more is unnecessary, Formula is; Moment = Arm(distance) X Weight. Then, in motion. (Centrifugal Force & Velocity) come into the equation, but I dropped out before they got to that level of Physical Science. Carl Sagen could tell us, but unfortunately,,,, RIP.
So if I put a cup of antifreeze in my already balanced , ****y driving coker cl***ics , before I go to Austin next week , I will be able to tale a difference ?
Let me jump in here with some real world experience. ATV- couple of thorn holes, plugged, and it got the wobbles. I put in some slime type sealant/balancer, and smooth ride, plus no more flats. "89 Jeep off road runner with 33" Boggers, 14.5" wide. Rough ridin' SOB; 50 mph was all I could take on the hard surface roads, and the noise! Had to wear earplugs to go to town 3 miles away. Put a couple of ounces of Hi Density plastic Airsoft pellets in the tires and they got civilized to drive, and the noise level dropped off, too. (Still too loud.) Tried the Hi-D Airsoft pellets in a Dakota's wheels; didn't work. I think it was because we didn't take off the lead weights already on the wheels. Back to the Jeep- now running BFG MT's with the Hi D pellets, and the balance remains good even when there are globs of mud packed around the wheel. My conclusion is that small amounts of fluid will do it, and a few ounces of Hi-d Airsoft pellets (or the ceramic beads, or lead shot, or BBs, or...) will work.
One more time for the cheap seats, it does not balance the tires or the driveshaft, it merely hides the vibration by damping it. It's physics people. Maybe try... <dl><dd></dd></dl>It can also be solved by treating it as "simple harmonic motion". I'm not saying that it doesn't make the ride better, but it doesn't balance them.
Ever think it might not be the tires, but the way your suspension is set up? Just a little food for thought.
I have no idea if it balances the wheel/tire combo or not, but I can tell you that the only reason it's used in bigger tires is for weight on equipment like tractors and skidders. I know because I spent my childhood wrestling those monsters on and off the same tractors and skidders.
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