Vermont Tractor Pullers Association
Altered Farm
Frozen 2017-2018
Driver Eligibility:
1. General rules apply.
2. Driver must be 16 years of age or older, capable of
handling tractor. Those under 18 years of age must have
written parent/guardian permission.
Safety:
1. All operators must wear an approved racing helmet
(minimum Snell rating 90). Face shields recommended.
Fire suits MANADATORY, minimum requirements for fire
suit, Nomax rating of SFI 3.2A-1 (single layer). Head sock,
fire retardant gloves and fire retardant shoes or leather
work boots are MANDATORY.
2. It is MANDATORY that the tractor has a roll over
protection bar or cage that is at least as high as the top of
the driver’s head/helmet. Rollover protection must be
fastened by at least two points to the rear axle housing.
Factory style flip down tops allowed. Rollover protection
must be able to lift one rear wheel when pulled horizontally
from the top of the bar/cage without damage to the
bar/cage. If a rollover protection bar is installed, it is
mandatory to have a lap belt. If a rollcage is installed, it is
mandatory to have a 5-point harness.
3. All Altered Farm Tractors MUST have air shut off (diesel)
or ignition shut off (gasoline) that has a hook up ring at the
rear of the tractor to be connected to transfer sled. Kill
switch must be within 6” of center and no more than 48”
above hitch. It is MANDATORY that an electric assist fuel
pump be tied to the kill switch. All Altered Farm Tractors
will be REQUIRED to be shut off by factory ignition or
throttle shut off.
(Explanation: NO stalling of engine while in gear for shut
off.) Air shut off or ignition shut off must be within reach of
driver with seat belt or 5-point harness buckled. Will be
checked during inspection or at discretion of officials.
4. It is MANDATORY that all Altered Farm Tractors have an
SFI approved clutch and flywheel. It is MANDATORY to
install frame connecting ladder bars. Frame connectors
must be secured adequately from final drive housing to
forward of bell-housing and flywheel. Frame connectors
must meet VTPA criteria: able to support tractor with engine
disconnected from rear housing. SFI 4.1 or 4.2 rated, 6
strap blanket is MANDATORY.
5. Stabilizer bars or wheelie bars are REQUIRED and must
meet VTPA specifications (refer to diagram in back of
book).
6. A tractor is REQUIRED to have at least a fully charged 2
½ lb fire extinguisher on board in reach of operator. A
functional gauge on the fire extinguisher is REQUIRED.
7. The third link of three-point hitches will not be used in
any way to stabilize the draw bar. There must be a dead
man zone of 18” in height and 6” wide from the top of the
draw bar.
8. MANDATORY front skid shoes must able to support
tractor in the event of tire, rim, spindle or axle failure. Skid
shoes must be directly underneath frame rails. Bottom of
skid shoe to have maximum of 4” ground clearance.
Securely attached to tractor.
9. NO narrow front ends. It is MANDATORY that all front
ends are no less than 36”between front tires.
10. Harmonic balancer shielding must be built to contain
harmonic balancer in the event of crank shaft failure or
balancer explosion. Shielding must be 360 degrees plus
appropriate shielding in front. Frame rails may be used as
part of the shielding.
11. It is mandatory to have engine side shields of .060”
metal. OEM steel fan shroud is mandatory. If the fan
guard is plastic or fiberglass, it is required to have a side
shield cover the fan. Electric fans are exempt.
12. MANDATORY: 2 clamps with 3/8” cable between #1
and #2 cylinders completely around top of head and bottom
of block with a 3” slack.
13. RECOMMENDED: Aftermarket steel hubs.
Chassis/Engines:
1. Altered Farm Tractors are stock appearing tractors with
enhancements to create more horse power and pulling
ability than similar stock models.
2. Tractors with engine modifications or higher than rated
engine RPM will be expected to enter in Altered Farm
Tractor classes. Tractors with above modifications entering
stock classes will be disqualified and not allowed to re-
enter Altered Farm Classes.
3. Turbocharger inlet to be a maximum of 3.0” measured at
the wheel or at a restrictor bushing installed at the inlet of
the turbocharger. Bushing must be secured in place, if
bushing falls out during run, tractor will be disqualified. All
exhaust must exit through the turbo.
4. All turbo charged tractors must have two 3/8” bolts
installed crisscross through the exhaust after the turbo
charger.
5. Fuel must be pump #1/#2 diesel only. Soy/biodiesel
allowed.
6. Nitrous oxide, propane, alcohol, nitro methane, methanol
and all other oxygen carriers and flammables are
PROHIBITED.
7. Water injection allowed.
8. Intercoolers/ice boxes allowed.
9. Stock wheel base must be maintained.
Hitches:
1. Draw bar must not exceed 20” in height. Draw bar must
be stationery in all directions. No clevises. There will be a
dead man zone of 3” on either side of draw bar. Minimum
length of draw bar is 22” from center line of axle housing
and a maximum of 36” from center line of axle housing.
Tires:
1. All tractors with rubber tires are permitted. No
sharpened or cut tires. Tire studs or chains not permitted.
Added Weight:
1. All weight must be safely secured to the tractor, and not
to interfere with hitch. Weight is not to exceed 24” forward
of the front must portion of the tractor. Any ballastor
external parts lost while hooked to the sled will be cause for
disqualification. No weights may be moved from one
tractor to another competing in the same class during that
class. No portion of tractor may interfere with sled or sled
hitch during a pull.
Hitch
needs to be visible for hitching and unhitching.
Weight Classes:
1. All tractors weighed at event.
2.Weight Classes: 6,500 lbs; 7,500 lbs;8,500 lbs; 9,500
lbs; 11,000 lbs;12,500 lbs.
Misc:
Competition rules (not safety rules) are frozen for two
years- 2017 and 2018 pulling season.