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This guide is searchable by using your browser's "Find" feature. For example, to find everwhere in the rules the guidall is discussed, press Ctrl+F on your keyboard and type in "guidall". Click on "Find Next" to find the next occurrence of the word you are searching for. You can search for part of a word. If you search on the word "pull", you will also find the words pulls, puller, pullers, pulled, pull-off, pulling, etc. This guide was scanned from the NMMTPA Rulebook dated 1/03 using Optical Character Recognition software. Although every attempt has been made to eliminate errors, the process is not 100% foolproof. This website is not an official publication of the NMMTPA, so here is the disclaimer: This online facsimile of the NMMTPA rules is provided for INFORMATION ONLY and is not intended as a replacement for your official rulebook. Consult the latest edition of the NMMTPA Rules and Regulations before making important decisions. |
About the
National Micro-Mini Tractor Pullers Association
The National Micro-Mini Tractor Pullers Association sanctions pulls throughout North America. Standard rules are provided, assuring members that their vehicles will be legal at any pull they may choose to attend. The association also sponsors a points contest. A puller earns points at each pull towards a "Points Champion" award for their state or province. Awards are presented each year at the annual meeting. The association also publishes the "Puller's Post", the newsletter of the association, thus letting members know where the sanctioned pulls will be held. Another major benefit of being a member is the $1,000,000 liability insurance policy each member enjoys while pulling. Join now and enjoy all the thrills of pulling micro-mini style! Membership rates: Class A - $20 - This provides the right to participate at sanctioned pulls, to compete for points awards, to vote, and to receive the monthly newsletter. Family Class A - $10 - This provides class A rights to the children (15 years old and younger) of class A members. Class B - $15 - This provides the monthly newsletters only. Class C - $5 - This is the fee to pull at a sanctioned pull for those who are not NMMTPA members. All pulls require a $30 sanction fee to be a sanctioned NMMTPA pull. The member sponsor must list whether the pull has a 100% payback, added purse, total purse less a portion of the sanction fee, etc. For more information, contact Eric Rasmussen at 262-835-4544 |
Quick Rule Reference Table | |||||
Rule | Classes | ||||
Pro-Stock | 2WD | Super Stock | 4WD | Open | |
Max. Weight (lbs.) | 3 and 5 | 4 | 5 | 6 | 6 |
Max. Wheelbase (inches) | 8 | no limit | 8 | 8 5/8 | no limit |
Length Limit (inches) (center of rear axle to front of vehicle) |
10 ½ | 12 | 10 ½ | 13 (16 overall length) |
18 |
Max. Number of Engines | 1 | 1 | 1 | 1 | no limit |
Max. Engine Displacement (cubic inches) | 0.051 | no limit | 0.15 | 0.15 | no limit |
Hand Held Throttle Cables Allowed? | no | yes | yes | yes | yes |
Tire Design | black rubber | open | open | open | open |
Max.Tire Size (width x diameter) | 1 5/8 x 4¼ | 2½ x 3½ | 3 x 5 | 1½ x 3 | no limit x 6 |
Max. Hitch Height (inches) | 1 ¼ | 1 ¼ | 1 ¼ | 1 ¼ | 1 ¼ |
Min. Hitch Length (inches) (center of rear axle to back of hitch hole) |
1 1/8 | 1 1/8 | 1 1/8 | 2 ½ | 1 1/8 |
Other | 300:1 max. gear ratio |
center front tires in wheel well |
General Rules
1. All judge’s decisions are final. Misconduct will cause disqualification and loss of points in each class pulled at the judges’ discretion.
2. All pit and track areas must contain only pullers and officials - no spectators.
3. NMMTPA official sanctioned classes are: 3 lbs. Pro Stock, 4 lbs. Two Wheel Drive, 5 lbs. Pro Stock, 6 lbs. Four Wheel Drive, 5 lbs. Super Stock, and 6 lbs. Open.
4. Each vehicle may be entered in more than one class, but only once in each class. A vehicle is defined as a driveline, body, tires, and engine. These components may not be interchanged in each class.
5. The first puller (test puller) of each class has the option to drop his first pull and pull again for his official pull pending his/her immediate decision. No test pulls (pull-overs) are allowed in a pull-off.
6. Contestants will be allowed two attempts to cross the 4’ mark on a 16’ track and the 6’ mark on a 24’ track. However, in a pull-off, only one attempt will be allowed.
7. Pulling measurements are to be taken from the front center of the skid plate. Full pulls are 15’ or 14’ (optional) on a standard 2’ x 16’ track. Full pulls on an optional 2’ x 24’ track are 21’ (the use of the optional 24’ track must be advertised with the pull information in the "Puller’s Post"). Track specifications are listed in the technical section.
8. The track will be cleaned between each puller in the class by the track judges only.
9. Any part of a vehicle tire or sled leaving the edge of the track during a pull will have the distance measured to that point. Anything (weights, nuts, etc.) that falls off the pulling unit during a pull will result in the pull being measured at that point. The pull will be stopped by the table judge and measured if one drive wheel (or wheels on one side of the pulling unit) is raised off the track for a traveling distance of more than six consecutive inches. This decision is to be made at the judge’s discretion.
10. All vehicles are to be guided with a clear plastic guiding device termed a "guidall", with the following requirements:
A. The guidall must be kept flat on the track surface and parallel with the vehicle.
B. A 7 inch (inside width) guidall must be furnished for use in the Pro-Stock and Super Stock classes. Both a 7 inch and 10 inch (inside width) guidall must be furnished for the 2WD, 4WD, and Open classes. Only a 7 or 10 inch guidall may be used at a pull.
C. Must maintain 1 inch minimum clearance between weight bracket, front end, tires, axle, etc. (any part of the vehicle) and guidall.
D. The guidall must measure 6 inches minimum height and be square on all surfaces. The "arms" of the guidall must be 6 inches in length.
B. Nothing can be used on the weight bracket, wide frontend, or guidall to help in holding the vehicle on the track. Examples might be glue on the guidall or sharp objects or brads on the weight bracket.
F. The objective is to guide the vehicle in a straight line only. No zig-zagging or s-ing will be allowed.
G. The guidall must be assembled so that there are no protrusions on the inside surfaces to catch on weights or weight bracket.
H. One hand must be on the guidall handle while in the act of pulling.
11. The type of fuel used is open (use caution). Each puller is responsible for his/her own safety as well as spectators.
12. No radio controlled vehicles will be allowed.
13. All pullers will be given a maximum time limit of three minutes to have their vehicle in operation from the previous last pull of the class.
14. All pulling units must pass a "cotton ball test", wherein the tires will be touched to a cotton ball and removed. If the cotton ball is torn apart excessively, the puller is disqualified.
15. The weight added to the skid plate can not exceed 5% of the total weight of the sled.
16. All sleds used at a sanctioned NMMTPA pull must use a chain hitch on the skid plate or pan.
17. Starter batteries are to be maintained in a safe manner.
18. All vehicles must be inspected immediately after each pull. The hitch of the vehicle will be checked as pulled. No rotation of tires is permitted.
19. Having once entered, pullers can get entry money refunded upon withdrawing from the class before the individual class has started.
20. All pulls must be listed in the "Puller’s Post" that is expected to be delivered before the pull date or it’s not a sanctioned pull.
21. Must be a NMMTPA member to enter and pull at a NMMTPA sanctioned pull.
22. A puller must enter a minimum of five pulls to be awarded the shirt, plaque or any other points champion award. There is no minimum on the number of points earned. If two or more pullers are tied for 1st place in a state points race, all would receive awards and be designated as co-champions.
23. The only points of contact with the track by the vehicle shall be with the wheels. Weights, weight bracket, gears, and all parts of the vehicle must clear the track.
24. Sled hitch height at the skid plate shall not exceed 1 inch from the pulling surface. No minimum height is stated. No length is stated.
25. The number of entries is limited to two entries per person per class.
26. No beer or liquor is allowed in the pits or pulling area.
27. Exhaust stacks, mufflers if used, must point away from the track.
28. A pull may officially have no more than six classes.
29. Each person must pay $2.00 at each pull to go towards year-end awards and the promotion of NMMTPA.
30. Whenever a NMMTPA vote is taken by mail, only the votes sent in are to be counted.
31. It is recommended that a fire extinguisher be present at all pulls.
32. On machines that do not have a legal hand throttle cable, the engine fuel and throttle settings can not be manually adjusted after a vehicle is hooked to the sled and placed on the truck.
33. Hand held throttle cables, if used, must be flexible so that they can not be used to stabilize the machine (at judge’s discretion) and must not become taut.
34. If a proposed rule change is voted down by the membership, that same rule change shall not be resubmitted for voting for at least three years.
35. A pulling attempt (or hook) is defined as when the vehicle’s pulling tires touch the track with the engine running and the vehicle is hooked to the sled.
36. Once a class has started no entries can be added.
37. Any changes to the sled, track or scale need to be announced. Whether it's before the start of the class or during the class.
38. Webmaster is an official board position. The person will be held responsible to the rest of the NMMTPA board.
39. Final point total dicrepancies must be taken up with the score keeper within three weeks of the postmark of the Puller's Post it is published in.
Pro-Stock Classes
1. All pro-stock tractors must originate from 1/16th scale two wheel drive farm tractors. They must keep their tractor-like appearance which includes seat, steering wheel, hood, etc. Each tractor must have the stock hood mounted plus or minus ¼ inch from front-most part of hood to the center of the rear axle. The maximum overall length from the center of the rear axle to the front-most part of the tractor, including the front weights and bracket, is 10.5 inches. Maximum wheelbase is 8 inches.
2. Engine to be no larger than .051 cubic inch displacement. May be reed valve or rotary valve. No dual engines or electric motors allowed. No hand held throttles are allowed.
3. The tractor must pull by no more than two tires. No duals or track-type tractors are allowed. All tires are to be made of rubber (4 ¼ x 1 5/8 inches maximum) with no additives, fillers or softeners of any kind. Tires may be turned down to puller's preference. Tires must be cleaned with alcohol only. Tires are subject to be checked by a durometer with a minimum reading of 35. If below 35 on first reading then it must read above 35 on two of three places on the tire. Tires must be made of black rubber. NO PART OF THE TIRE MAY BE SILICONE TYPE RUBBER. Puller may use their choice of pro-stock rims.
4. Class weights will be set at 3 and 5 lbs. Official may run any combination of classes.
5. Weight bracket or wide front can not exceed 6 inches in width.
6. Rear weights can not extend behind rear wheels. Weights must be distributed equally on the rear axle.
7. Hitch height must be no higher than 1¼ inches to top of drawbar. Hitch can not be closer than 1 1/8 inches from back of hitch hole to center of rear axle. Hitch must be mounted solid to the tractor Pulling point (¼ inch minimum diameter hole) may not be more than ¼ inch from back edge of the drawbar. Pulling point must be rigid and centered between the pulling surfaces (tires) within ¼inch. Hitch must be made from material with a minimum thickness of 1/16 inch and maximum thickness of ¼ inch.
8. Excessive holes in the tractor body are not allowed. (does not include driveline)
9. Tractors without original toy tractor engine must have side panels in place of engine.
10. Tractor tires can not leave excessive black marks on the track.
Two Wheel Drive Road Vehicle Class
1. Recognizable body.
2. Maximum length is 12 inches from center of rear axle to front-most part of the vehicle, including the weights and bracket.
3. Engine size is not restricted. No dual engines or electric motors allowed.
4. Hand held throttle cables are allowed.
5. The engine must stay inside of the body; only the cylinder may be outside the body.
6. Maximum gear ratio of 300 to 1.
7. Tires may be of puller's design, but may not exceed 2 ½ inches wide and 3 ½ inches in diameter. Tires must be cleaned with alcohol only.
8. Class weight is to be set at 4 lbs. only.
9. Hitch height must be no higher than 1¼ inches to top of drawbar. Hitch can not be closer than 1 1/8 inches from back of hitch hole to center of rear axle. Hitch must be mounted solid to the vehicle. Pulling point (¼ inch minimum diameter hole) may not be more than ¼ inch from back edge of the drawbar. Pulling point must be rigid and centered between the pulling surfaces (tires) within ¼ inch. Hitch must be made from material with a minimum thickness of 1/16 inch and maximum thickness of ¼ inch.
Super Stock Class
1. All super stock tractors must originate from 1/16th scale two wheel drive farm tractors. They must keep their tractor-like appearance which includes seat, steering wheel, hood, etc. Each tractor must have the stock hood mounted plus or minus ¼ inch from front-most part of hood to the center of the rear axle. The maximum overall length from the center of the rear axle to the front-most part of the tractor, including the front weights and bracket, is 10.5 inches. Maximum wheelbase is 8 inches.
2. Engine to be no larger than .15 cubic inch displacement. No dual engines or electric motors allowed. Engine may not extend in front of the tractor's hood grill. Hand held throttles are allowed.
3. The tractor must pull by no more than two (2) rear wheels. Tires may be of puller's design, but no larger than 3 inches wide by 5 inches in diameter. No adhesive substances are permitted. Tires must be cleaned with alcohol only.
4. Class weight will be set at 5 lbs. only.
5. Weight bracket or wide front can not exceed 6 inches in width.
6. Hitch height must be no higher than 1¼ inches to top of drawbar. Hitch can not be closer than 1 1/8 inches from back of hitch hole to center of rear axle. Hitch must be mounted solid to the tractor. Pulling point (¼ inch minimum diameter hole) may not be more than ¼ inch from back edge of the drawbar. Pulling point must be rigid and centered between the pulling surfaces (tires) within ¼inch. Hitch must be made from material with a minimum thickness of 1/16 inch and maximum thickness of ¼ inch.
7. Excessive holes in the tractor body are not allowed (does not include driveline).
8. Tractors without original toy tractor engine must have side panels in place of engine.
Four Wheel Drive Road Vehicle Class
1. All four wheel drive road vehicles must originate from stock models. Must be replicas of full scale original factory equipped, four wheel drive vehicles. They must keep their stock appearance which includes hood, cab, grill, seat, steering wheel in conventional location, front bumper, and original like box. A flat bed is permissible. Trucks are not required to have the following items:
windshield, side and rear glass, rear bumper, and tailgate. Individual customizing touches may be added, such as 4WD flare fenders, spot lights, or CB antennas. Wheelbase is limited to 8 5/8 inches maximum, center to center of axles. No minimum wheelbase is specified. Maximum overall length of 16 inches. A floor is optional in the box.
2. Engine to be no larger than .15 cubic inch displacement. Hand held throttle cables are allowed. No duals or electric motors allowed.
3. Road vehicles are to be pulled by no more than 4 tires. No duals or tandems allowed. Tires may be of puller's design, but no larger than 3 inches high and 1 ½ inches wide. No adhesive substances permitted. Tires must be cleaned with alcohol only.
4. Class weight to be set at 6 lbs. only.
5. The length from the center of the rear axle to the front-most part of the vehicle (including weights and bracket) may not exceed 13 inches. The bumper must be mounted in original location. The pulling point must be centered between the pulling surfaces (tires) within ¼ inch.
6. Hitch height must be no higher than 1 ¼ inches to top of drawbar. Hitch can not be closer than 2 ½ inches from back of hitch hole to center of rear axle. Hitch must be mounted solid to the vehicle. Pulling point (¼ inch minimum diameter hole) may not be more than ¼ inch from back edge of the drawbar. Pulling point must be rigid and centered between the pulling surfaces (tires) within ¼inch. Hitch must be made from material with a minimum thickness of 1/16 inch and maximum thickness of ¼ inch.
7. Front tires must be centered between the original front wheel wells.
Open Class
1. Hot rod tractor models built to puller's design. Maximum length may not exceed 18 inches from center of rear axle to the front most part of the tractor, including front weights and bracket.
2. Hot rod tractors must have a seat, steering wheel, and a safety grab handle which must extend above the rear wheels. Grab handles are not required on super stock type tractors pulling in the open class.
3. No limit on engine size or quantity. No electric motors are allowed.
4. Throttle cables that may be held onto all the way down the track are optional. Cables must not become taut. Throttle adjustments are allowed.
5. The tractor must pull by no more than two rear wheels. No duals, four wheel drives, chains on tires, or track-type tractors are allowed.
6. Tires may be of puller's design, but may not exceed 6 inches in diameter. Tread design and width are open. No adhesive substances permitted such as liquid rosin, glue, and etc. Tires must be cleaned with alcohol only.
7. Class weight will be set at 6 lbs., including throttle cable.
8. Hitch height must be no higher than 1¼ inches to top of drawbar. Hitch can not be closer than 1 1/8 inches from back of hitch hole to center of rear axle. Hitch must be mounted solid to the vehicle. Pulling point (¼ inch minimum diameter hole).may not be more than ¼ inch from back edge of drawbar. Pulling point must be rigid and centered between the pulling surfaces (tires) within ¼ inch. Hitch must be made from material with a minimum thickness of 1/16 inch and maximum thickness of ¼ inch.
9. If a chassis designed for another class (Super Stock, Two Wheel Drive, Pro-Stock) is pulled in the open class, it may be modified as the puller wishes, but must meet the rules of the open class (removal of the original body is not required). Vehicles from other classes with no modifications other than added weight must meet the rules for the original class with the exception of the weight limit.
How a Puller Scores State Points
1. A puller who enters a class and makes an attempt to pull down the track receives a minimum 2 points for hooking.
2. If a puller finishes in the top ten places in a class, that puller receives points based on his/her finishing position. Points go as follows: 1st - l2pts.; 2nd - 1 lpts.; 3rd - l0pts.; 4th - 9pts.; 5th -8pts.; 6th - 7pts.; 7th - 6pts.; 8th - 5pts.; 9th - 4pts.; and 10th - 3pts.
3. If a puller enters two vehicles in a class, that puller will only receive points for the vehicle with the best finish. Example: One vehicle finishes 3rd place and the other one 9th, the puller receives 10 points for the 3rd place finish and no points awarded for the 9th place finish.
4. If a puller enters a class, then scratches after the class has started and does not attempt a pull, they receive no points for that class.
5. No points awarded for the Super Pull event. This event is not a sanctioned pull!
6. A pull that is disqualified by the judges counts as an attempt (towards points average) and receives no points.
National Points Champion
This shall be an award given to the person or persons who have the most points in a class, of all NMMTPA members combined together. Only one shirt made per winner with the class or classes that they won printed on it.
Super Pull Rules
1. The Super Pull will be held in conjunction with the Annual Meeting Pull.
2. To qualify to pull at the Super Pull a person must:
A. Attend a minimum of five sanctioned pulls.
B. Be the state winner in that class or be one of the five pullers with the highest point average in that class from the entire association. Note: if state class winner is one of the five pullers with the highest point average no allowance will be made.
C. If, for some reason, the state/province points winner can not attend the Super Pull, the state/province points runner-up may pull in his/her place.
3. Any ties for the last slot of a class will be the only reason to allow more than the minimum number of pullers in a Super Pull class.
4. If, for some reason, a Super Pull class can not be filled with a full list of qualifiers, that class will only run with the amount that did qualify. Example: 12 slots and only 8 qualifiers. Those 8 qualifiers will pull.
5. All Super Pull qualifiers must pull under the NMMTPA rules which they qualified under. Any rule changes prior to the .Super Pull event will not be allowed in the Super Pull event. Example: All qualifiers for the 1999 Super Pull will pull under the 1999 rules and regulations.
6. Awards to be limited to only a plaque for each class winner.
Reference Appendix
Measurements of Stock Hood Locations
(from center of rear axle to front-most point of the hood)
AC | 7000 Series | ……… | 8 13/16" | IH | 88 Series | ……… | 8 5/8" | |
8000 Series | ……… | 8 3/4" | JD | 5020 | ……… | 8 5/16" | ||
D-21 | ……… | 8 1/4" | 3020, 4020 | ……… | 6 13/16" | |||
Case | 970 Agri-King | ……… | 7 3/4" | 4520, 4620 | ……… | 7 3/4" | ||
1120 | ……… | 8 1/16" | 4430 | ……… | 7 11/16" | |||
2590 | ……… | 8" | 4850, 4960 | ……… | 8 7/8" | |||
Case/IH Magnum | ……… | 8 13/16" | 6920 | ……… | 7 13/16" | |||
MX110 | ……… | 8 1/2" | 8420, 8520 | ……… | 10" | |||
MX220 | move back 1/4" | 10 3/4" | MF | 1150 | ……… | 8 1/8" | ||
Ford | 8730 | ……… | 8 5/8" | MM | 1000 | ……… | 7 7/8" | |
Ford/NH 8970 | ……… | 8 1/2" | Oliver 1800, 1855, 1850 | ……… | 7 1/16" | |||
Genesis | ……… | 8 1/4" | 1655 | ……… | 7" | |||
TM165 | ……… | 8 1/4" | White 2-135, 155, 180 | ……… | 7 15/16" | |||
IH | 56, 66, 86 Series | ……… | 7 1/2" |
NMMTPA Hall of Fame
1. Hall of Fame inductees should have been supportive of the Association for a minimum of 10 straight years.
2. Hall of Fame inductees should be nominated and selected on the basis of their level of commitment to the Association without distinguishing between members and non-members. This allows persons who have greatly influenced, helped make significant changes or supported the Association "above and beyond" to also be considered for nomination beyond the membership body.
3. Nominees’ names shall be sent to the Board and State Representatives who shall review the candidates and decide who shall be presented to the Association for election into the NMMTPA Hall of Fame. Prior Hall of Fame inductees shall also be included in this decision making process.
4. NMMTPA shall purchase a large trophy or plaque to which the subsequent inductees names can be inscribed. The trophy shall be on display at the Annual Meeting, various events, and Super Pulls.
5. Inductees to the Hall of Fame shall be present at the Super Pull and awards banquets as "honored guests" complete with paid dinners to encourage continued attendance.
6. Hall of Fame inductees shall be given lifetime membership status without future dues to also continue to encourage their support.
7. Next Induction is 2004 and then every three years thereafter.
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