First time

Row Crop · Aug 11, 2013

I have been driving tractors since I was eight years old, but hooked on to a weight sled for the first time yesterday. My 1949 Oliver 66 doesn't have any weights, but still pulled 169%. Not too bad for farm stock. Or is it?

rrlund · Aug 11, 2013

Don't know if it's good or bad,but I've wanted to pull percentage,just never have.

Was that Coopersville?

showcrop · Aug 11, 2013

I don't think that 169% is bad at all. No weights is not necessarily a handicap. It is all about traction, and weights are usually needed to achieve the balance necessary to maximize traction. It could be that your tractor is well balanced as it sits with single front and it looks like maybe cast centers on the rear. Those narrow lug 45 degree rears could be just the ticket for the track surface too. I prefer transfer sled pulling myself but stone boat pulling is really more demanding on having every little detail just right. Congratulations, and I hope you are now "hooked" and will be back.

wilson ind · Aug 11, 2013

I have pulled so called percentage many times. that being said pulling more than 100 %is rather impossible. Refer to nebrasks test!!!! The pull depends on coffecient of friction between the sled and dirt. I have wanted to make an electrical load cell to hook between sled and tractor to give actual lbs of pull. This could be calculated into tractor weighr to give true percentage. Ok fellows start throwing the dirt!!

gtractorfan · Aug 11, 2013

I like the idea of the specialized hitch between the tractor and sled. Along with that could be a radar speed dector which could translate into horsepower exerted.

Now for pulling more than 100%, remember the hitch lifts on the sled transferring weight from the sled to the tractor.

wilson ind · Aug 11, 2013

Right you are on weight transfer, howerer I would sumit that is now more weight of the tractor. I have thought of a simple set of semi trailer axels with some necessary weight but air control that would set the brakes slowely. The distance pulled would be irelevent. The total force would be measured .

rrlund · Aug 11, 2013

Believe it of not,EJ Potter had a machine like that. Some kind of turbine outfit. I only saw it used once. Kind of boring. I went to see dirt flying and tractors being brought to a stop.

Row Crop · Aug 11, 2013

No. One of the guy's in our tractor club has it every year. Coopersville was a farce. Waste of gas going there.

rrlund · Aug 11, 2013

I wonder if anybody went to Stanton yesterday? RayP and Royce went last year. I had combine issues to fix and didn't make it again this year.

showcrop · Aug 11, 2013

(quoted from post at 07:40:43 08/11/13) I have pulled so called percentage many times. that being said pulling more than 100 %is rather impossible. Refer to nebrasks test!!!! The pull depends on coffecient of friction between the sled and dirt. I have wanted to make an electrical load cell to hook between sled and tractor to give actual lbs of pull. This could be calculated into tractor weighr to give true percentage. Ok fellows start throwing the dirt!!

I have never pulled percentage, but I just looked up results of a stone boat pull last fall. I won the 3500 lb class with a full pull of a 1000 lb. stone boat loaded with 15 500 lb. blocks. You tell me what percentage that is. The track surface makes a huge difference and this track is not a very good one. It is just crushed bank run so traction is poor, and the boat pulls hard. Once on a sandy track we were pulling twice as much.

wilson ind · Aug 12, 2013

the fact of coffecient of friction cames to play. Consider the adverstiment of the tundra pulling the space shuttle. tundra couldn't have weighed more than say 9000 lb. shuttlw weighed many tones more than tundra. shuttle on wheels or to say low coefficient of friction. yes in your way of comparrision tundra pulled maybe 1000 per cent. consider plowing sandy loam compared to dry alfalfa sod. plow pulls harder because of coefficient of friction

showcrop · Aug 12, 2013

(quoted from post at 06:13:04 08/12/13) the fact of coffecient of friction cames to play. Consider the adverstiment of the tundra pulling the space shuttle. tundra couldn't have weighed more than say 9000 lb. shuttlw weighed many tones more than tundra. shuttle on wheels or to say low coefficient of friction. yes in your way of comparrision tundra pulled maybe 1000 per cent. consider plowing sandy loam compared to dry alfalfa sod. plow pulls harder because of coefficient of friction

Yes, If you read my post I commented on the difference in tracks.

Colin

Chuck NH · Aug 13, 2013

I've pulled and been involved with pulling for many years in the northeast. Always thought that pulling on a weight transfer sled would be a lot more interesting to your average spectator if a device (hydraulic or electrical) was installed on the sled to display to the actual weight being pulled.

showcrop · Aug 13, 2013

(quoted from post at 04:38:12 08/13/13) I've pulled and been involved with pulling for many years in the northeast. Always thought that pulling on a weight transfer sled would be a lot more interesting to your average spectator if a device (hydraulic or electrical) was installed on the sled to display to the actual weight being pulled.

Chuck, How about load cells in the points where the frame of the sled mounts to the pan? Mark told me that he is adding fancy lights and polished aluminum rims, so maybe you could get him to spring for load cells and a read-out too.

First time

Row Crop

Member

rrlund

Well-known Member

showcrop

Well-known Member

wilson ind

Well-known Member

gtractorfan

Well-known Member

wilson ind

Well-known Member

rrlund

Well-known Member

Row Crop

Member

rrlund

Well-known Member

showcrop

Well-known Member

wilson ind

Well-known Member

showcrop

Well-known Member

Chuck NH

Member

showcrop

Well-known Member

Similar threads