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Tractor Pulling Discussion Forum

wheelie bars

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wheelie bars

07-14-2006 19:19:05




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does anyone have specs on how long wheelie bars should be and how big steel plates should be pictures would be great thanks




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Ian Johnsen

07-15-2006 22:50:24




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 Re: wheelie bars in reply to wheelie bars, 07-14-2006 19:19:05  
I used two pieces of hitch receiver I got at a local hardware store's towing department. These were just the 2" inside dim square tube with the hitch pin holes in them. Heavy wall with a double lip on the outside edge, designed to be welded to a frame. I welded these to my mounting brackets and made my 2" tubes with footplates slip in with different holes for various heights. I can raise them all the way up for the trailer and scales, and the adjust them for various track conditions. I found I didn't want them too low on a softer track where tires dig down and the plates are now closer to the untouched ground between the tires.USE HITCH PINS and not some old bolts off the shop floor.

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keddano

07-15-2006 07:04:25




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 Importance of Good wheelie bars in reply to wheelie bars, 07-14-2006 19:19:05  
John dear,Couldn"t agree more "go beyond Minimum" Was at a pull the other day, My girlfriends son was pulling his new 66 Oliver for the second time since we built it. (The Tractor had been out to about 5 pulls and has about 40 hp),The wheelie bars are built to NATPA style specs,heavy 2x2 tubing, built to take anything. The problem came in when we failed to use grade 8 bolts in a rush mounting the hitch.He was nervious,and grab 3rd gear instead of 1st.Upon letting the clutch out it started wheel hopping,with his foot bouncing on the clutch pedal,making it all the worst....One of the hitch bolts failed,then in a split second the rest failed.He completely dropped the hitch.The only thing that stopped him from going over was the wheelie bars.(you could hear the horror in his mom"s voice on the video tape she was filming) They may have saved his life. There"s alot more clubs making Bars mandatory,and guys complain.You wouldn"t get in a truck and haul your load down the road without brakes. Pulling any tractor without proper Wheelie bars in my opinon is just taking a chance that can cost more in a second then most realize.

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john dear

07-14-2006 20:10:41




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 Re: wheelie bars in reply to wheelie bars, 07-14-2006 19:19:05  
www.natpa.com has some specs for wheelie bars. I would also suggest www.ntpapull.com and order a rule book. I have an older rule book and it has all kinds of diagrams for approved hitches, roll cages, and wheelie bars. Most folks call for at least 5" beyond the radius of the tires, maximum 10" above the ground, not connected to the hitch in any way, minium 5" x 5" square pad on end of bar, and must be able to support the weight of the tractor in heaviest class. I have seen many sets of wheelie bars inside the radius of the rear tires. Tractor could turn completely over and the bars would never touch! Seen many sets bend coming off the scales and bumping the ramp. Obvisously those wouldn't do any good! I made mine for a Farmall M out of 2" x .25" wall DOM 4140 tubing with a 1.5" x .25 wall DOM 4140 adjustable slip in tube for the pad. In pulling position the inner tube stuck out of the outer tube by about 8". The bars would support the weight of the tractor fine. I discovered by dropping the jack a little too fast the inner bar bent. So it was replaced by a solid bar. So keep in mind even if you can jack the tractor up by them a violent raring tractor could still fold up a set if they are not strong and attached well. I wouldn't cut corners. Go beyond what is 'minimum'.

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