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Fluid vs weights

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Joe

01-23-2000 15:37:36

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I have a JD 60 that I pull in the antique pulls. I pull in the 7000 to 8000 lb class and the 8000 to 9000 lb class. To pull this heavy I run fluid with my wheel weights. I have done very well and finish in the top four most of the time. I have been told that dry weight will pull better than fluid. Is this true, and if so why

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Douglas

02-02-2000 02:30:46

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Re: Fluid vs weights in reply to Joe, 01-23-2000 15:37:36

i don't know much about pulling but i do farm for a living and some studies from john deere shows it is better to use weights than fluid because it takes horsepower to turn the fluid. good luck

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Ol' Ed and All

01-24-2000 07:02:37

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Re: Fluid vs weights in reply to Joe, 01-23-2000 15:37:36

Hey Joe, I don't know about the wet or dry weights, but I'm curious what you Pullers think of my experience and conclusion. I pulled for a few years in our stock class County Fair and had pretty good results. I pulled a 4640 in the 18,000# class. After watching some others pull and spinning alot sooner than I thought maybe they should, I noticed they all ran low pressure in the tires. Most had fluid. I had fluid and when I increased the pressure to about 30# or so, I did much better. My theory was that the point of the lug began the dig and the rest of the tread kept the hole clean instead of a low pressure having too much tread in one flat area. Does this make sense too anyone? Whatever the reason was, I won everytime I pulled. I pulled out of a rut every time where everyone else was spinning out. Just curious.

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Brandon Gantt

01-24-2000 07:15:08

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Re: Re: Fluid vs weights in reply to Ol' Ed and All, 01-24-2000 07:02:37

How fast did you go down the track Ed? It all depend on how fast you tractor goes. My tractor is a 52 model A JD that is very slow and i have to have very good traction. Thats why i run all of the weight i can get. Water and low air pressure also help me. If I start to spin i am going nowhere fast. Traction is cructial to slow tractors. Joe, what size tires are you running? A 60 is the same as a late A you know

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Ol' Ed and All

01-25-2000 11:07:34

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Re: Re: Re: Fluid vs weights in reply to Brandon Gantt, 01-24-2000 07:15:08

Brandon, I ran that 4640 in the A-3 and 4 range. I'm not sure on the mph, but it was one range slower than we ran when we were in the field with a disc or plow. I would almost run out of power in A-4 just as I got through the soft spot and then shift to A-3 and made a full pull each time, so I don't really know where the limiting factor was going to be, but I feel pretty sure if I hadn't run out of sled, it would have run out of power before it spun out.

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Joe

01-24-2000 17:12:24

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Re: Re: Re: Fluid vs weights in reply to Brandon Gantt, 01-24-2000 07:15:08

Brandon. I pull 2nd gear most of the time and run 14.9 38 firestone tires. That is as big as our clubs allow. (2 sizes over)

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Brandon Gantt

01-24-2000 17:41:42

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Re: Re: Re: Re: Fluid vs weights in reply to Joe, 01-24-2000 17:12:24

What is the biggest weight class your club has? I am trying to post a picture of my tractor on this website but so far its not working. Maybe someday i will get it right.

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Joe

01-25-2000 12:33:57

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Re: Re: Re: Re: Re: Fluid vs weights in reply to Brandon Gantt, 01-24-2000 17:41:42

Are club and the ones around us here in western part of Va pull 54 and older tractors and the classes run from 2000 to 10000 lb. That is all the sled we have will stop. The farm stock pulls use a bigger sled and do go higher but I just fool with the oldes

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Brandon Gantt

01-25-2000 15:29:21

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Re: Re: Re: Re: Re: Re: Fluid vs weights in reply to Joe, 01-25-2000 12:33:57

A good running 60 should have no trouble spinning out in the 9000 lbs class. If its in first with 14-9-38's.

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Joe

01-25-2000 16:59:51

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Re: Re: Re: Re: Re: Re: Re: Fluid vs weights in reply to Brandon Gantt, 01-25-2000 15:29:21

My tractor will spin out in secound on most tracks, unless they are real tight. Wish I had 1\2 a gear

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Mike

01-24-2000 01:43:34

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Re: Fluid vs weights in reply to Joe, 01-23-2000 15:37:36

I don't know much about pulling, but I do know that firestone is advising me not to fluid fill the new radials I sell as it decreases the flexibility in the sidewall, ie you get less "footprint" Most farm tractors want all the traction they can get, within reason. I have worked on a few super stocks (1000 plus horse power) and they do not want traction but instead want wheel speed so they can get momentum out of the whole before sled gets heavier. I hope this helps. I have a farm tire service truck on the road so e mail me any questions and I will try to answer. Mike

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Brandon Gantt

01-23-2000 17:56:33

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Re: Fluid vs weights in reply to Joe, 01-23-2000 15:37:36

I have an A john deere that i pull in the 8200pd class that I have 300 pds of weight on each wheel, both tires(16-9-38's) about 3/4's of the way full and 1000 pounds of hang on weights. I have been told and i think this is the truth that the weight of the water in the tires forces more area of the tires to the ground and makes them flex better at low air pressures.

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clooney

01-23-2000 17:53:58

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Re: Fluid vs weights in reply to Joe, 01-23-2000 15:37:36

Joe,just my engineering .02$ worth,you will have to get the real anwser from a puller. By adding on weights you can place them for best traction & weight transfer. You will also get better weight transfer with add on weights. If you fill the tires with fluid you leave less space for air so when the tires are deflected under load the air pressure will increase more.

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John T

01-23-2000 17:37:04

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Re: Fluid vs weights in reply to Joe, 01-23-2000 15:37:36

Joe, to be honest I never thought about that question, but as an engineer always have an opinion on such subjects. I would think possibly using fluid weight, especially if the tube isnt totally full, that some energy would be absorbed by the rocking motion it produces. And that energy has to come from the engines power which turns the wheels. However, you dont want to waste any energy in shaking up the fluid, you want it used to torque the axles so thats the only reason I see why maybe a solid weight is better than a rocking rollin fluid. John T Engineer in Indiana

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