11/22/2016
MOMS MUDBOG 2017 GUT & GO DERBY
Explanation
The Chain and Go Demo Derby Class is designed to be a entry level class to promote greater
interest in demo derbies and to give new people a class to compete in on a limited budget. The
cars in this class are meant to be stripped, prepped with safety gear and brought to the track to
demo. These rules specifically state what can be done to the vehicle. There are no gray areas.
If it doesn’t say you can, then you can’t.
A. Competing Models
1. 1980 and Newer cars (year determined by the VIN number)
2. Open to any make of car
3. 4 cylinder maximum
4. No mini vans, SUVs, Pickups or El Caminos
All Glass except front windshield must be removed. All loose glass must be cleaned out
2. Front windshield may be replaced with expanded metal. Must have 1 vertical brace for
support in center.
3. Car exterior must be stripped of all molding, headlights, trim, tail lights etc.
4. All Flammable material must be removed from interior. Head liner, rear seats, door
panels, carpet etc
5. Front seat must be securely fastened to the floor. These bolts may not go through the
frame.
6. Hoods may be chained or wired shut only. 6 places maximum. 3/8 chain or 2 wraps of #9
gauge wire maximum
7. 2 of the hood chains or wire may be looped around the front bumper.
8. No re-bolting of hood skins
9. A rollover bar is required. Minimum of 4” x 1/4” thick pipe or square tubing.
10.Trunk lids may be chained or wired shut only. 6 places maximum. 3/8 chain or 2 wraps of
#9 gauge wire maximum
11.2 of the trunk lid chains or wire may be looped around the rear bumper
12. No welding other than what is specifically stated in these rules.
C. Frames
1. Engine mounts may be chained to the frame. No added metal. .
2. No other welding on the frame is allowed.
D. Brakes
1. All cars must be able to demonstrate the ability to stop at any time. If your brakes do not
work, you will not compete
E. Tires
1. Any dot tire is aloud
2. Must be mounted on stock style rim
3. No Reinforcing rims
4. Tubes are allowed
5. No valve stem protectors allowed
F. Bumpers and Bumper Brackets
1. No welding of the bumpers or bumper brackets is allowed.
2. Must use factory bumper for car.
3. Bumper may be bolted or chained to the frame only (STOCK/REPAIR).
4. You may chain around the bumper and through the hood and trunk lid (2 points 2 wraps as stated previously)
5. Bumper ends may be cut for tire clearance.
G.Engine
1.Engine must be 100% stock
2.No cradles or protectors
3.engine mounts may be chained
I. Batteries
1. Battery must be relocated to inside the cab
2. Battery must be fully enclosed in a box made of metal
3. Battery box must be securely fastened to the floor
4. Lid must be securely fastened shut
5. No bungee cords or ratchet straps may be used to secure battery box or lid
J. Fuel System
1. Stock fuel tank must be removed from OEM Location. (read #2)
2. Stock fuel may be used if mounted as described below.
4. Maximum 8 gallon tank. Stock fuel tank is the only exception (see number 2)
5. Tank must be securely fastened to the floorboards of the vehicle
6. Tank cannot be bolted through the frame at all
7. It must be mounted as close to the center of the car as possible
8. no fuel tank protectors. must be tank slightly larger then fuel cell.
K. Cooling system
1. Radiator (if used) must remain in the factory installed location
3. If the radiator is removed, you can loop the hoses together. No added expansion tanks
4. No other cooling system modifications allowed
L. Suspension
1. No Suspension modifications are allowed
2. No chaining humps or limiting suspension travel in any way
M. Safety
1. Driver must wear helmet, seat belt and eye protection at all times during competition.
2. Driver must remain in vehicle with all safety equipment on until directed by a track
official to exit the vehicle. (fire is the only exception)
3. Driver’s door hits are illegal. Any driver’s door hit deemed intentional will be cause for
disqualification. Repeated unintentional or careless driver’s door hits will be cause for
disqualification. Official’s determination is final
4. Intentional or repeated unintentional use of your driver’s door as a defense may result in
disqualification.
5. No hot rodding in the pits
6. You are allowed 2 fires. The third fire will be cause for disqualification
N. Technical Inspection
1. It is your responsibility to show up with a legal car
2. It is your responsibility to report to tech. Failure to report to tech or competing in any
event with a car that has not been inspected will result in immediate disqualification and
a monetary fine
3. Hood and trunk lid must be opened for inspection.
4. Protests are not allowed. Official’s decisions are final
5. No refunds for cars that do not pass tech inspection
O. Competition Rules
1. No sandbagging. You must make a competitive hit every 60 seconds
2. Intentional or repeatedly exiting the defined area of competition may result in
disqualification
3. Obey the Officials commands.
4. Have Fun and Put on a Great Show for the Crowd!
