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Demolition Derby

Our Pick
Date: Aug 18, 2023
Time: 7:30 PM
Location(s): 

Ticket Info

SOLD OUT!
TICKETS REQUIRED
**Tickets will be available Saturday, July 1st at 7am!

PLEASE SEE THe ACTIVITIES & RESERVATIONS TAB TO PURCHASE TICKETS!

(Includes: STICK HORSE RODEO, BEER GARDEN, ROYALTY CROWNING during intermission)

7:30pm Tickets Required (T & OA)
Tickets have sold out 7 years in a row. Show sells out earlier every year. Tickets are normally not available the day of the show.

Superintendents: Ben Vannoy, Don Hayes
Sponsor: Hill Petroleum

ALL TICKETS ARE GENERAL ADMISSION
Grandstands: Seating in the Grandstands and some limited seating on the Track. Tickets also allow access to beer garden for those of legal age.
$27 Adult (9 years +)
$12 Youth (4-8 years)
free for those 3 years and under as long as they sit on a lap
NO CARSEATS, NO STROLLERS, LAPS ONLY.

Pit Pass: General admission in the pIt area. Signed waiver is required. No alcohol in the Pit area.
$27 for all ages

MUD ZONE: Get up close and personal in the arena behind layers of concrete blocks.
$35 for all ages with a signed waiver required. No alcohol in the Mud Zone.

DERBY CLASSES
Compact car
Full-size car
Mid-size truck
Full-size truck

See Rules in the Demolition Derby Entry Packet
DEMOLITION DERBY
Demolition Derby is a generation-binding, intense, non-stop, heavy metal mayhem of collisions; a nerve wracking, knuckle busting prep in the pits where men and women cage their fury and unleash it when they hit the dirt. It is a contest where cars compete to be the last one moving. Audiences are treated to the pandemonium of cars crashing into one another. This event promises dents, dings, dirt, and destruction, everything that audiences expect from a Demolition Derby. Get up close and personal with the cars and drivers with a Pit Pass (pit pass has no access to beer garden).

STICK HORSE RODEO

Superintendent: Routt County Fair Royalty
The fourth annual Routt County Fair Stick Horse Rodeo will be held during the Demolition Derby on Friday, August 19th. We encourage all kids between the ages of 4 and 10 that are attending the demolition derby to come on down and join us on the race track! A waiver will need to be signed by a parent to participate. There will be stick horse barrel races, bronc riding, and bull riding! The stick horse rodeo is FREE and put on by your local Routt County Fair Royalty Court. Hope to see you there!

ROYALTY CROWNING:
Royalty Crowning will be held during intermission of the Demolition Derby. The 2023 Routt County Fair Queen will be crowned during this time.

NEW! LIMITED WELD RULES

Limited Weld
1. Driver safety is highest priority. Protect yourself and others
2. Any American made car can run with the following exceptions; No 4x4’s, ambulances, hearses, trucks, limousines, etc.
3. NO SWAPPING OF FRAMES, MUST BE STOCK.
4. Wagons must have rear window with a minimum of 14” tall by a maximum of 4” wide at normal window opening. Please message with questions or approval
5. Up to 8 Entries allowed

CAR PREPARATION

1. No frame modifications unless specified by class, no boxed frames or loaded bumpers allowed
2. All cars must be stock unless modification is stated in the rules. 3. All glass, plastic, chrome, and interior must be removed from the car before arriving to the derby.
4. All trailer hitches and braces must be removed.
5. Batteries must be moved to passenger front floorboard. They must be properly secured and covered.
6. You must have a number in Bright colors on each front door and must have a 15”x15” sign on the roof of your car with car number. You cannot use the roof sign to strengthen the car.
7. You must use a radiator and it must be in stock location.
8. All cars must have working brakes when you cross the ramp. If the car is not able to exhibit the ability to stop it will not be inspected.
9. You can run shifter through the floor, and you can have a switch panel. If you are running an electric fuel pump, it must be hooked up to your ignition switch, so when your car shuts off so does the fuel pump.
10. You may cut wheel wells for tire clearance. Fenders may be bolted together, or you may roll your fender once and weld them. You may do one or the other not both.
11. No radiator guards in front of or behind radiator. No spray foam can be used around radiator and the supports.
12. Sheet metal/panel creasing is allowed

TIRES
1. Tires no bigger than 17 inch rim
2. No split rims
3. No aluminum wheels, steel only
4. No studded tires.
5. Foam filled or doubled tires are OK– we don’t want any flats!!!
6. Valve stem protectors are OK. Tires may be screwed to rims.
7. No bracing or bead locks on the outside of the rims.
8. Agricultural/Directional Tires are allowed.

ENGINE & TRANSMISSION

1. Use engine of choice, engine must be in stock location.
2. Transmission pan and engine oil pan may be plated for protection. ¼” plate maximum and this plate must be same width and length of pan only and welded to pan only.
3. Transmission crossmember may be moved and located to mount to transmission tail shaft housing mounts and can only be a maximum of 2”x3”x 1/4” rectangular tubing. Tubing may be welded or bolted to frame rails.
4. Motor plates are allowed, 3/8” thick maximum. 4”x6” plate maximum to mount to the cross member.
5. Transmission coolers are allowed. These coolers cannot be placed to reinforce the car.

REAR DIFFERENTIALS
1. Use rear end of choice but must be no more than 8 lugs
2. No agricultural rear ends
3. You can tilt rear end
4. Welded or posi-track highly recommended.
5. Slider drivelines are acceptable.
6. Axle Savers are allowed

FUEL SYSTEM
NO PLASTIC FUEL TANKS WILL BE ALLOWED! There is no gray area in fuel system safety. Make it safe or you will not run .
1. Original gas tanks must be removed. You must use a boat tank or well made metal fuel cell (7 gallons maximum), and it must be properly secured and covered.
2. Only metal tanks may be used. Fuel line must be secured and fastened properly, metal line is highly recommended with a maximum of 8” of rubber line on either end. Fuel lines must run inside the car and be protected. Keep away from exhaust. Fuel lines are recommended to be covered.
3. Place fuel cell behind the driver's seat or in the center of the car where the backseat was. No other source of gas inside the car at all. No gas tank or gas line may extend past the rear seat area of the vehicle.
4. Protection bars around the fuel cell inside the car are allowed, they may not reinforce the structure of the vehicle in any way

DRIVER CAGE
1. A roll bar or halo must be installed behind the driver seat that extends to or above the roof line with round, square or rectangular tubing minimum 3” to a maximum of 8”. Roll bar or halo may not be welded to the body in any way. Smaller tubing may be used if it is proper materials (ie. DOM tubing, roll cage material) and designed properly to withstand heavy impact (this may be up to a judges discretion)
2. The roll bar or halo can be directly welded to the top of the frame rails or mounted to the floor of the vehicle with a maximum of 12”x12”x3/8” steel plate. Steel plate can be mounted by welding or bolting to the floor. Only two vertical bars are allowed. The roll bar or halo needs to be able to support the weight of the vehicle in case of a roll over incident.
3. A horizontal seat bar may be welded between the vertical halo bars or between the door posts at seat back height and another horizontal bar may be installed 6” above the floor height behind the driver seat or you may weld bars in an “X” behind the seat between the halo bars, these bars may not be welded to the frame, only welded to the halo. These bars may not be welded to the body in any way. It is recommended to secure safety belts to the cage if using aftermarket belts.
4. A dash bar is to be installed between the lower area of the “A” pillar to replace the original dash. Two vertical bars can be installed from the dash bar to the top of the frame on the inside of the front door seam. The vertical bars can be welded to the top of the frame or attached to the floor with 12”x12”x3/8” steel plate. The steel plate may be attached by welding to the floor pan or bolted through the floor pan. All tubing must be 4” maximum. Dash bar can be made of 6”x6” angle iron.
5. Horizontal door bars may be installed on both sides of the vehicle inside the front doors only. The driver side may have up to three horizontal bars, one at the floor level to protect the foot area, one in the middle of the door and one at the lower side window level. They may be welded to the vertical bar at the dash bar to the halo bar vertical bar. The driver side door bars may be plated fully with ¼” plate to protect the driver. The passenger side may have two horizontal bars, one at the bottom and one at the lower window level. Horizontal bars must not exceed 6” past the door seams on the front or rear of the front door. Driver side window opening needs to remain large enough to enter and exit the vehicle quickly in case of emergency. These bars may not be welded to the body in any way. 4” maximum tube size.
6. “A” Pillar support vertical bars may be installed inside the “A” pillar from the dash bar up and across the inside top of the windshield area. Horizontal bars may be installed from the “A” pillar support to the halo or roll bar. These bars may not be welded to the body in any way.
7. Windshield bars must be installed, a minimum of two bars and a maximum of four bars are required directly in front of the driver from the dash bar to the windshield bar or the body for safety. 2”x2” square tube or 3”x3/8” flat bar is recommended, can be covered in expanded metal as well for additional protection if wanted.
8. You may weld one 2” diameter rear bar in the center of the rear window from the halo bar to the first 6” of sheet metal on the rear valance area in the trunk area for driver protection. Wagons may weld a rear bar from the halo to the body at the rear of the rear tire inside the vehicle, if the halo bar is outside the vehicle and hole may be cut in the roof to allow the bar inside to be attached. The rear window opening must be 14” or larger on all wagons
9. Frame kicker support bars from the vertical dash bars to the front frame area will be allowed. Kicker bars are to not exceed 12” past the front of the firewall to the front of the kicker bar.
10. A support frame for the fuel cell will be allowed. The support frame can be welded to the halo and seat bars to protect the fuel cell. The fuel cell support frame may not be welded or attached to the frame or body in any way.

BUMPERS
1. Front or rear bumpers may use any factory inner and outer automobile bumper or 5” X 5” 3/16” square tube with open ends and nothing inside.
2. Bumpers can be no wider than tires front and back.
3. Bumpers may be mounted with any automobile bumper bracket and shock mounted on one side of frame extending no farther back than the first 12” of frame, can use 4” X 4” ¼” plate to mount bumper to the shock or 12” of ¼’ plate with 4” wrapped around front to mount bumper, this plate can NOT exceed the width of the frame. Pick ONE mounting method only.
4. Rear bumpers may have two straps 2” x 3/8” thick may be welded from trunk to the bumper. When welding these straps to either side. Only a total of six inches may be welded to hold it onto the bumper or trunk on either end.
5. Front bumpers can have two straps 2” X ⅜” thick may be welded 6” on bumper and 6” on radiator support. The bumper brackets must be touching the bumper.

TRUNKS & HOODS
1. TRUNKS You can fold hoods or trunk lid over. Do not slide your hood or trunk forward or back, trunk must remain on hinges.
2. YOUR TRUNK LID MAY BE V’D IN THE CENTER , BUT MUST REMAIN AT LEAST 8” OFF THE TRUNK FLOOR, the 8” will be measured from the top of the frame rails not the spare tire hole. If you tuck the trunk lid to the trunk floor you can only use 12" from the end of the trunk cavity and a total of 24” to attach to the floor in a 6” on 6” off welding pattern.
3. Trunk lids must have a 12 inch hole cut in the center of trunk for inspection purposes, inspection hole may have 3 -3/8” or less bolts and 1.25” diameter washer bolting the two layers back together.
4. 2 - 1” All-thread may go from the trunk lid to the frame or trunk pan vertically, If it passes through a body mount hole you must have a 1” spacer between the body and frame. You may weld all thread to side of frame vertically not to exceed the bottom of frame.
5. You may have plates for trunk tie down sheet metal to sheet metal only a maximum of 4” x 4”- ¼” square. No plates welded to frame.
6. HOODS - Hoods must have at least a 12 inch square hole over air cleaner cut out in case of fire. Any holes in the hood may be bolted back together with 3/8” or less bolts and 1.25” diameter washer no more than a total of 12 bolts allowed to pinch the hood sheet metal back together. You may cut multiple holes but do not exceed the 12 bolts. You may have up to four 1” all-thread with 4” X 4” square or round washers on top to hold the hood down, all thread may go from the hood to the frame and be bolted or welded. All thread can not attach to subframe. All hood bolts must be placed outside the windshield bars. All bolts must be vertical. No welding of hood to the bumper. Can also use 3 per side ⅛” angle iron 6” long with two ⅜” bolts. Hood MUST be opened for inspection or large enough cut out to see engine fully for inspection.
7. Trunk lids may be chained/ wired/welded/ bolted from sheet metal to sheet metal. No welding trunk to bumper. All doors and trunk can use 3” by 1/8” strapping or ¼ rod for filler to weld seams.

SUSPENSION
1. Suspension must be stock height. Bumper height not to exceed 24” to the bottom of the bumper to the ground and must be a minimum of 14” from the ground to the bottom of the bumper or frame both front and back.
2. Leaf springs must be stock and made of stock spring material, with a minimum 1” stagger and no springs can be as long as the main leaf. You can only have a total of 8 leaf springs per side, no thicker than 3/8" thick and no wider than 2 ¾” wide. The main leaf must be the top spring in the spring pack and leaf springs must go down from longest to shortest. You can re-clamp springs, 4 clamps per side. Homemade clamps can’t exceed 2x4x1/4”.
3. Coil springs can be changed to a stiffer spring or add a spring. You may run up to 1” bolt from your rear end housing to the package tray no chains will be allowed. You can either bolt or chain your rear end in, DO NOT do both.
4. You cannot change the length of trailing arms to shorten or extend them. Rear control arms must be stock but can be reinforced. You may weld them solid.
5. Do not raise the suspension any other ways except what is listed above.
6. You can bolt, wire, or chain coil springs to rear-end and frame to prevent springs from falling out, do not go through body as this would be another body mount.
7. You may weld leaf spring mounting brackets to prevent them from becoming unbolted. You can loop chain or wire (1 loop of 3/8” chain or 4 loops of #9 wire) from rear end to frame in 2 spots on each side, must go around frame, do not bolt the chain to the frame.
8. We are going to allow you to weld the chain to the side of the frame, for your chains from the frame to the rear end, you can weld one link only to the side of the frame if you choose to weld the chain instead of wrapping it around the frame.
9. When attaching leaf spring brackets you will be allowed to use 4x4 ¼” square tubing no longer than 4” to be welded to each side of the frame rail. Do not reinforce factory mounting plates.

STEERING
1. Tie rod tubes may be manufactured but must stay close to the same length and must mount in the same configuration as stock. 2. Aftermarket spindles are allowed. Do not re-engineer the way the steering components mount to the frame.
3. Upgraded ball joints and tie rod ends are allowed
4. Upper control arms can be welded down with 2”X4” ¼” plate

WELDING
1. All doors must be chained, wired, bolted, or welded shut. Drivers’ door may be welded inside and outside. Drivers door may be welded shut with strap no bigger than 3” by 1/8” thick on the outside seam. It is highly recommended to reinforce your driver’s door with a minimum of 1/8” plate and may not exceed 6” past each driver’s door seam. We strongly suggest plating the whole door. In this type of competition all drivers doors will take some type of hit during the event. We want you to be safe and protected behind your reinforcement. ALL OTHER DOORS AND TRUNK MAY BE FULLY WELDED WITH 3” BY 1/8” STRAPPING OR ¼ INCH ROD FOR FILLER IS ALLOWED.
2. Firewall forward you may also weld two 1/4" solid beads on frame seams only over existing manufacturers weld. MUST LEAVE ONE FRAME HOLE OPEN FOR INSPECTION IN FRONT OF FIREWALL ON EACH RAIL.
3. FRAME PATCHING ALL frame patches will be painted WHITE and have a ½” drilled to determine thickness, all frame patches ¼” maximum thickness, must be done or you will NOT pass inspections. Allowed 12” firewall forward, 6” behind front of front door seam and 12” hump plates. All patches and hump plates behind firewall will be mounted on the outside of the frame. NO patches can exceed the width of the frame. Fresh or preran cars can have patches.
4. BODY MOUNTS Body mount bolts and spacers can be replaced or discarded. No bolts larger than 5/8” with washers no larger than 3”.
5. RUST REPAIR/PATCHING You can patch rust holes in sheet metal with sheet metal only. Do not cut rust out; weld 2” beyond rust. Patching - you are allowed to patch a hole in the passenger side by only using a maximum of 4”x4” patches maximum 18 gauge metal, patches not allowed to touch each other to fill the hole.

Sponsors

SENERGY PETROLEUM
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Demo Derby Information Packet

General Info

Pre-registration is strongly recommended!
Pre-registration entry fee is $50 and must be received NO later than 5pm, Monday, August 14, 2023. Late entries will be accepted the night of the derby, with a $25 late fee.
Entry Fee includes: one driver pass and one crew member pit pass per car registered. If you bring more than one car to drive in the derby, you receive one driver pass and one pit pass per car (2 cars = 2 pit passes, 3 cars = 3 pit passes, etc.). Additional pit passes are available at the gate for $27 per person.
Every person in the pit area MUST sign a waiver. Anyone under 18 MUST have a waiver signed by a legal guardian. NO exceptions!

Check-in is from 4:30-6:30 pm. There is a mandatory driver’s meeting at 7pm. Cars must be tech inspected before driver’s meeting.

Classes for the derby are: Compact Car, Full-size Car, Mid-size truck, and Full-size Truck. There are two main event grudge matches, one for cars, and one for trucks. There is a $20 buy-in for any vehicle still able to run after their heat. Grudge matches are winner take all for the additional buy-in purse money.

Questions? General information call the Routt County Fairgrounds at 970-276-3068 or email at info@routtcountyfair.org

Fill out a separate registration form for each vehicle.

NOTE: Registration fee is non-refundable. This registration form will not be accepted without a signed liability waiver attached. Driver is responsible for removing all cars.

PRIZES AND PAYOUT DEPENDENT ON NUMBER OF ENTRIES….THE MORE ENTRIES THE MORE PAYOUT!

General Rules

1. NO alcohol allowed in the pits! There is no alcohol allowed on the fairgrounds during the Routt County Fair. Strictly enforced by Fair staff and law enforcement.
2. Paid, complete registration must be completed prior to inspection.
3. Entry fees are non-refundable.
4. Drivers must be at least 16 years old. ID required and parental consent if under 18.
5. Entry fees will include one driver pass and one pit pass per registered car and will be given out at gate on the day of the race.
6. Drivers’ meeting is mandatory.
7. If car fails inspection, you may be allowed to make corrections. If you can’t complete or decline to make corrections, your car will be disqualified.
8. If you want a particular number you need to request the number with pre-registration or by contacting Ben Vannoy at least one week prior to event (Aug. 11,2023).
9. Car numbers on a first come, first serve basis. Numbers can have no more than 3 numbers at least 12” tall on both driver and passenger side of car. Numbers on roof must have the bottom of the number towards the rear of the vehicle. Numbers can be substituted with a theme for theme cars with prior approval.
10. A driver’s safety belt and safety helmet must be worn. If either falls off during the event you will be dis-qualified.
11. Long sleeve shirts and long pants must be worn.
12. Fire resistant clothes and goggles are recommended.
13. No passengers allowed. (Except during parade lap at beginning of race.)
14. All cars and trucks equipped with airbags must have airbags removed.
15. If you purposely hit the driver’s side door, you will be disqualified. Decision based on judge’s discretion and is final.
16. Drivers must make an aggressive hit a minimum of every 90 seconds. Patty-cake hits and sandbagging are grounds for disqualification. Decision based on judge’s discretion and is final.
17. If you become stalled you have ONE minute to get restarted and then ONE minute to make a hit.
18. In the event that the last two cars in the heat become stuck together for a two minute period the follow-ing shall be enforced: a) if by double hit, heat will be stopped and they will be pulled apart and heat will then continue; b) if by a single hit, the last car to make the hit will be declared the winner.
19. Harassment of judges, derby officials, volunteers or staff is not tolerated and is grounds for disqualifica-tion and removal from pit area and/or fairgrounds.
20. Crews have 30 minutes to work on cars for the grudge match.

General Building Rules

1. Driver side door protection on outside of door is required, (i.e., a scraper blade or c-channel iron no thick-er than ½”) extending past the driver’s door by 6” on either side and bolted a minimum of 4 times. Bolts shall be no larger than ½” and will not extend out past the nut more than ¼”, washers shall not exceed 4”x4” and ¼” thickness.
2. Driver’s door must be painted fluorescent orange; NO other part of the car may be painted fluorescent orange.
3. A center bar from driver side center post to passenger side center post behind the driver’s seat is recom-mended. Bar can only be secured to the door post and no other part of the car. Bar or post shall not ex-ceed 6” in diameter and must be welded in to either the vehicle itself or to a plate bolted to the pillar. Plates shall not exceed 8”x8”x ¼” thick, and shall be bolted in a minimum of 4 places. Bolts not to exceed ½” and cannot extend past the nuts more than ¼” with standard washers.
4. “A” pillar bracing will be allowed. Dimensions and mounting rules are the same as the center bar. “A” pil-lar brace may be padded for driver protection, but CANNOT be tied to center bar.
5. Remove all glass, fiberglass, lights, light brackets, body trim, door handles, locks and clips. Remove head-liner, rear seat, door panels, carpeting, and all unnecessary electrical wiring. If it will break, fall off, or burn - get rid of it! Fuel doors must be removed or welded shut. No flags, antennas, horns or other devic-es may be mounted to the car.
6. Dash boards and air conditioning/heater ducts may be removed.
7. Firewall must be in place between the motor and cab. No holes of any kind allowed on driver’s side of firewall, openings must be covered with maximum 18 gauge sheet metal secured with screws, bolts, or rivets (.030 minimum). NO duct tape allowed on firewall.
8. Any STOCK American or foreign auto or station wagon is allowed. NO jeeps, convertibles, hearses, ambu-lances or limousines are allowed. 4WD or AWD vehicles must have one driveline removed.
9. Cars with other model engines and drive trains must have prior approval from the judges.
10. Factory fuel tanks must be removed and a suitable tank of steel, aluminum or certified plastic must be mounted in the back seat area with a splash guard. The tank must not exceed 6 gallons and must be vent-ed to the outside of the vehicle, including boat tanks. The electric fuel pump must also be securely fas-tened down and covered with rubber that is also secured. Box or tank must be bolted to the floor, NO sheet metal screws, plumbers tape, ratchet straps or bungee cords allowed.
11. Battery must be relocated to the inside of the car and securely fastened to the floor and covered. Batter-ies must be bolted to the floor, NO sheet metal screws, plumbers tape or bungee cords allowed. Must either be in a box or covered with rubber that is secured in place.
12. Radiators and transmission coolers may be relocated. They must be securely mounted in the back seat area; cooler lines must be made of steel or certified oil line and secured. Lines must be wrapped securely if they are run inside the vehicle, clamps are allowed. NO gas line or heater hose will be allowed.
13. Doors must be secured by 2 of the 3 listed means: welded, bolted, or chained. If chained, chain cannot be larger than ½” and bolted with ½” bolts. If bolted, no larger than ½” bolts that extend no more than ¼” past nut with standard washers. If welded, welds must be minimum 2” and no more than 6” in length at no more than 6 points along door. Minimum filler rod may be used to fill gap, metal strap may NOT be used.
14. Hoods must be able to be open for inspection. Vehicle must have a minimum of two - 4” holes cut in hood, one on either side of motor. Hoods must be secured at 4 points either using bolts or stock hinges and bolts. Hood bolts cannot be larger than ¾” with no more than 4 washers.
15. Trunks must be secured in 6 points using one of the three listed means: welded, bolted, or chained. If chained, chain cannot be larger than ½” using ½” bolts. If bolted, bolts cannot be larger than ¾” with no more than 4 washers. If welded, welds must be a minimum 2” and no more than 6” in length. Trunks must be cleared of any debris.
16. Minimal sheet metal repair allowed, but cannot exceed 18 gauge in thickness. Patches not to exceed holes by more than 1”. No rebar, angle iron, plate, concrete, etc. to add strength or stability to the car.
17. Automobile bumpers only and only two per car. No oil-field bumpers or homemade bumpers. Remove all trailer hitches. No added steel under bumpers for added strength. Bumpers are not allowed to exceed the width of the vehicle, bumper may be cut to fit width of vehicle and welded back together. Butt weld only no lap welds. Bumpers must be bolted and chained at two locations on the frame with no more than 12” slack in the chains. Chains are not allowed to be tightly wrapped for use as a battering ram.
18. No suspension lifts of any kind. Leaf springs cannot have more than four spring clips, two in front and two in rear of axle. No truck differentials allowed in car classes, axles must be located above springs (no spring
- over axle lifts). No coil spacers of any kind.
19. No welding of the frame or bending of the frame to increase stability.
20. No welding of body to frame.
21. No welding of body to bumper.
22. A windshield post is recommended to keep driver safe. One post running vertically from the bottom to the top of the windshield frame is acceptable.
23. The hole in the floor for transmission shift linkage must be covered with a rubber boot. A rubber inner tube fastened to the floor board and clamped around the shifter is acceptable.
24. Engine mounts may be secured using up to ½” chain or 5/8” bolts.
25. Exhaust pipes running under the cab must extend to behind the transmission cross member.
26. No wheel weights. No tractor tires. No fluid filled tires.
27. Vehicle must have four wheel brakes at the beginning of the derby and be able to stop within 10 feet dur-ing inspection.
28. All cars must run liquid fuel, gasoline, or diesel. NO propane, NOS, etc.
29. All radiators must be drained of all antifreeze and refilled with water.

Truck Class Rules

1. Half-ton, Three-quarter-ton, and One-ton full size trucks, suburbans, carryalls, blazers, scouts, and bron-cos are accepted.
2. Blazers and broncos with removable fiberglass tops must have tops removed. Scouts with metal tops must be secured with all mounting bolts and either chained or welded at a minimum of 4 places and no more than 6 places. Chains cannot be larger than ½” with ½” bolts, welds must be a minimum of 2” and no more than 6” long.
3. 4WD models must have one driveline removed.
4. NO dual rear wheels.
5. Original bed mounting bolts may be removed (and rubber bushings) and may be replaced with up to ¾” bolts with 3” washers. Bed can be directly bolted to the frame. Bedsides CANNOT be folded in and weld-ed for extra strength.
6. Tailgate must be secured at 4 points with welds no more than 6” long. Minimum filler rod may be used to fill gap between tailgate and bed. NO METAL STRAP may be used to fill gap. Tailgates may also be chained to bed. Chains no larger than ½” with ½” bolts.
7. Gas tanks may be mounted in front, center of the bed if desired with splash guard. Otherwise same gen-eral building rules apply.
8. Radiator and transmission coolers may also be mounted in bed behind fuel tank. Otherwise same general building rules apply.
9. All engines must have the spark plug even with or in front of the upper ball joint.
10. Maximum bumper height from the bottom of the front bumper to the ground will be 25”. Truck must have front and rear bumpers. Minimum rear bumper height must be 14” from the ground to the bottom of bumper.
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