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Tractor Pulling Discussion Forum

Dead Weight Pull rules and sled design

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Gary from Mules

09-24-2006 18:30:41




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Could anyone post rules for a dead weight and possibly sled design ideas. I would like to try to get this started in West Texas area.




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Chip Slater

06-05-2007 11:16:25




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 Cathleen Obrien in reply to Gary from Muleshoe, 09-24-2006 18:30:41  
here here here here here here here here here here

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Fergus

09-25-2006 02:52:44




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 Re: Dead Weight Pull rules and sled design in reply to Gary from Muleshoe, 09-24-2006 18:30:41  
We use the percentage system for our dead boat pulls. Tractors numbered sequentially in ascending order of weight, pull in that order, bringing new ones in as they reach a pre determined percentage (150% or so depending on conditions). Each tractor is in it"s own class, so to speak. Use a tip-over on a 12-15 ft chain to signify a full pull, anything less than that is not a pull. 2 tries at each weight, option of direction on 2nd attempt. Cards are pre calculated before starting to make it easier to keep track. Make sure pulling chain on sled is attached low to eliminate bulldozing and dirt accumulation in front of leading edge. Length of chain is critical and depends on how good your track is, typically 4-6 ft. Drawbars must be rigid and most use 18 in height. We will re-spot the boat after the first attempt by a puller if the two previous tractors have both gone out in that location. Setting the level at which tractors are brought into the rotation is the tough part, and varies with track conditions. In an ideal world we try to make sure nearly all get one successful pull, the winners may get to pull 6 or 7 times. On our tracks (very good clay)winners are usually in the range of 225-240 %. Hope this helps.

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DP

09-24-2006 21:08:51




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 Re: Dead Weight Pull rules and sled design in reply to Gary from Muleshoe, 09-24-2006 18:30:41  
I always liked the dead weight, (Stump Pull) pulls. The rules around here veried from Wolfman's though. Here a large pan was used also, but to get a quilifying pull, you must move the sled 3 feet. A full pull was 21 1/2 feet, at which time the puller had had the option of how much weight to add to the sled. There was a minimum amount that could be added, and at that point the driver went to the other end of the sled and tried for another pull. What I realy liked was that it seemed all tractors had a good chance at a good pull. Each puller got to pick their spot on the track to pull. Usually had a four wheeled tractor to place the sled, and by the time the big one's pulled there was a D-7 dozer to move the sled around.

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wolfman

09-24-2006 19:09:06




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 Re: Dead Weight Pull rules and sled design in reply to Gary from Muleshoe, 09-24-2006 18:30:41  
We built a big pan type sled- Four 4X8 steel slabs welded together to make 8X16 with a 8 in roll front & back. Made forms (I'd have to re-figure the arithmetic) about 24 in cubes, filled with concrete-these are 500 lbs each; used rebar loops out the top so we can latch on to these with skid steer. Have two short chains with large hooks on one end so skid steer operator can latch onto a block or two. Start 3500 lb tractors with empty sled. Add two blocks for their second round of pulls; usually one block next time. Put blocks in CENTER of sled & pull one way across arena & pull tractors back the other way-never need a pull back tractor. We pull classes 3000; 4500; 6000; 7500; 9000; 10500; & 12000. We used cables (5/8 or 3/4 I'd have to go measure-I,m forgetful)on both ends. When, say, all the 6000 lb tractors have failed to pull the sled the 24 feet in two tries, we begin the 7500 lb class WITH NO WEIGHT BLOCKS added. This way nearly each entrant gets a complete pull. If they all pull easily, throw 2 blocks on for the next chance, then maybe one, etc. We made the cables long-like 18 or 20 feet; front end rare is not a major concern plus with the long cables the hot 200 hp tractors have no advantage. Usually the antiques- the M's & A's and 400's and 620's etc win, place or show! Drawbar height 18 in. We have a no cut tire rule; factory drawbar -although we encourage a plate with large hole so our large hook will drop right over; hooks have handle welded on top for the guy hooking; small dog chain at back of sled attached to small metal stake painted flouresent fir-engine green so spectators can see it being pulled over; this chain is unclipped & taken to other end of sled when we pull the other direction. By pulling east, then west we pulled 60 tractors at this years county fair from 7 PM til 11:30

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