Combine / Demo Derby

Will be held on Friday July 30th 2010

Yellow Medicine County Combine Derby Pay Outs

First Place - YTD

Second Place - YTD

Third Place - YTD

Click the links below for information on the Combine Derby

Rules

Registration

Demo Derby

GENERAL RULES

NO GRAY AREA BUILDING!!
1. All drivers must be minimum 16 years old. Ages 16 and 17 must pre-register and send a notarized release form.
2. All drivers are required to wear seatbelts, safety helmet, and eye protection. Neck brace is optional but recommended.
3. All cars must be standard make with no reinforcement to the frame unless specified. no cement anywhere, and no self-tapping screws. Drivers compartment can be cross braced only with 2" minimum bracing outside dimensions. "Cars only" NO BARS can go from front bar to the floor will make you cut them.
4. You must remove all glass, mirrors, trailer hitches and chrome.
5. Painting driver's door different color is optional.
6. Car or truck must have 12"x12" hole cut in hood in case of fire.
7. Brakes must be in working order. Minimum of 2 working brakes.
8. No bigger than 7 gallon gas tank (steel only-no plastic) covered and strapped in the back seat or box. MUST HAVE FUEL CUT OFF WITH ELECTRIC FUEL PUMP (steel strapping or chains-no bungee cords on gas tank or battery).
9. Batteries covered and strapped in passenger seat area. MUST BE COVERED FOR YOUR PROTECTION.
10. No distributor protection for cars.
11. No profanity will be written on vehicle, subject to disqualification.
12. One fire-you start; second fire-disqualification.
13. You have 2 minutes to make an agressive hit.
14. NO SETTING BACK OR RELOCATING MOTOR.
15. No intentional crashing of the drivers door, subject to disqualification.
16. Vehicles must continue to crash. No avoiding, holding, or tag-teaming. No using drivers door as a block.
17. Mechanical work done on vehicle in pit area only.
18. No riding on vehicles at any time. Drivers must remain inside vehicle during derby and when being towed, except for fires.
19. Drivers door may be welded solid or reinforced in any way for safety.
20. Radiators must remain in stock position. Transmission coolers allowed.
21. Driver is responsible for any member of his or her pit crew. Any rules found violated will result in disqualification of driver, pit crew, and car and will forfeit any winnings, entry fee, and trophies.
22. NO DRUGS OR ALCOHOLIC BEVERAGES IN PIT AREA BEFORE, DURING, OR AFTER THE DERBY. SUBJECT TO ARREST AND DISQUALIFICATION. THIS IS ENFORCED!!!!!
23. For the derby all automobiles are acceptable except 1973 and older Imperials, and 1969 and older Lincolns, convertibles, Hearses, and Limos. NO CARS WITH IMP SUB FRAMES and no 68 and older t-birds. NO 03 and newer.

FULL SIZE CARS (old iron AND COMPACT RULES

1. Compacts may have maximum 106" wheelbase and may only be 4 or 6 cylinder.
2. Bumpers may be bolted or welded solid. You may weld bumper seams. You can use 2 by 2 by 2, 1/4 angle iron to the side's of the frame to hold on bumper, compacts may use full size bumper's and any factory mounts out of a passenger car. You can box in the sides of the bumper dont stuff it. you can stuff shocks it must be stock appearing.
3. Frames may be welded from firewall forward on fullsize and compacts.
4. May bolt fenders to wheel wells up to 8 3/8" bolts front and back. May fold front fenders NO welding bolt only using the 8 bolts.
5. Six Hood bolts up to 1", two to the frame, and four to sheetmetal front and rear with 4"x4"x1/4" washers. If you use angle iron on hood or trunk it can only be 2 inches. You can run 9 wire from top of core support to bumper. Trunk can be bolted in 4 spots 2 can go through frame and continue through trunk. and 2 sheet metal to sheet metal. Hood seams can be bolted together every 2 inches.
6. K-frame can not be welded to frame. May take out pucks. Body bolts may be replaced with 1” bolts.
7. Must have atleast 1 inch spacers at fire wall and may remove the back, you may add 2 extra body bolts which can also go to frame, 6”x 6” washer's. Bolts can go through both frame with only 2 nuts nothing in the frame or welded on the side of the frame verticaly.
8. Drivers Door may be welded solid. All other welds 5 on 5 off, you may also weld the inside sheet metal seams in the car 6 on 6 off, or bolt every 4 inches only in cab area. Cab area is in front of humps on wagons. You can weld 3 by 3 angle iron on passenger side front door bottom of door to floor only as long as the door.
9. Drivers door outside bracing 4" wide by ¼" thick steel 6" past door. If using channel iron, must have radius cut on ends. Top of doors can be folded down and welded. Back window can have a 2 inch 1/4 strap from roof to speaked deck.
10. you may tuck and roll trunk. Two 10"x4"x1/4" steel straps from bumper to trunk may be welded.
11. may weld A-arms to lift front end. Don't strengthen A-arms. Rear suspension must remain stock with any five lug rear-end (up to 9 leaf springs in full size only)and ( 7 on compacts), 6 clamps per side. No duct tape
12. NO LEAFING coil spring REAR-ENDS!!!
13. NO SETTING BACK OR RELOCATING MOTOR!!! May chain down. Do not strengthen frame.
14. Run any tire you see fit, foam it, double it, whatever you have to do.
15. #9 wire is o.k
16. Motor cross breeding is allowed.
17. Car's with no post's can weld strap from roof to door, 4”wide ¼” thick.
18. 4 pt cage is allowed, front dash bar cannot have kickers to the floor the back can be crosse braced no farther back then 10 inches of back seat. Halo bar no farther back then 10 inches behind the drivers seat to floor only and welded to roof. Halo bar can be attached to the door bars.
19. Stock Radiator's, no radi barrel's
20. No sedagon's, Decking must be removed
21. No plating y-framer's. you can close the frame using the frame itself only no plates, or use the bumper brackets.
22. NO plating fresh cars unless there is a rust hole.
There is a 8 inch plate rule per corner no matter the reason. 3/16 max must leave a spot unwelded to check thickness. If you have to go over the 8 inch rule it wont make inspection will have to cut. Refer to #23
23. You picked the car so build to the rule NO EXCEPTIONS.
24. Just because it dont say it doesnt mean you can do it so call first 763-222-9773
25. All 80's and newer can run a gas tank protector. Can be connected to the back seat bar and can go to the back seat sheet metal but do not welded it to the body or frame in any way.
26. DO NOT PAINT,OR UNDERCOAT THE FRAME or you will keep it on the trailor.

80s and NEWER WELD
Car Building

1. NO welding will be allowed on any part of the body or frame. The only welding allowed is in this set of rules. If your car is found with any weld, other than what is allowed, and you refuse to fix it to the judge's satisfaction, you will not run!!
2. All doors must be chained, wired, bolted or welded shut. Driver's door may be welded inside and outside. All doors may be welded shut with strap no bigger than 3” by 1/8” thick. Tops of the doors may be pinched together and welded but do not add any filler material.
3. **For driver's protection, you may weld a bar behind the seat from doorpost to doorpost, it can be an X, and you may also have a bar across your dash bar to bars behind the seat across the inside of the front doors only. You can also weld a plate across the driver's door not to exceed 6 inches past each seam. You may have a roll loop behind the seat, which must be welded to the floor or frame and may be welded or bolted to the roof – no kickers going back or front of the car. You may also weld a steering column to the cage. Back of cage including roll bar can only be 10” behind the back of the driver seat. You may also run a kicker from the door bar down to the floor or frame, do not extend any further forward than the front door seam, between the dash bar and seat bar, on the driver's side only.
**Please reinforce your driver's door very good, 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.**
4. Bumpers are interchangeable. Use your choice of bumper brackets either from bumper itself or car's stock bumper - no enclosing or boxing frames with bumper brackets or foreign material. Choose one and only one way, either the brackets from the bumper you choose to run or the brackets that were supplied with the factory bumper. Any automotive bumper and bumper brackets may be used on any car. No homemade bumpers or bumper brackets. You can weld bumper brackets or towers to the frame. You can weld bumper brackets and shocks to the bumper. You can weld shocks to shock towers. You can collapse shocks, and you can bolt the shocks to the towers with ½” bolt or less, and it must be done vertically. You may trim bumper ends or fold them around. Welding the bumper skins (chrome to inner liner) is allowed. When welding bumpers, shocks, and brackets - do not add any metal. Weld them solid. We do not want them coming off. No welding bumper to the body in any fashion. Bumper height not to exceed 24” to the bottom of the bumper to the ground. Bumpers must be in stock location.
5. Bumpers may be welded to the end of the frame with no added metal, just welding wire. Front and rear bumpers may have 2 chains or 4 loops of wire from radiator support/trunk lid or deck (to sheet metal only do not go around core support bolts) to bumper (not frame). These cannot be placed in front of the radiator.
6. 2-1” All-thread may go from the trunk lid to the frame, MUST go through body mount hole, and you must have a spacer between the body and frame. You may use wire in 2 spots with 4 loops from trunk lid and may go around the frame with the wire. DON'T DO BOTH. Trunk lids may be chained/ wired/welded/ bolted from sheet metal to sheet metal. Chryslers may weld all thread to side of frame but the all thread must be vertical and go up through the deck lid, or they can go through the frame if they so choose. Short Trunk cars – If you run ready bolt through the front body mount they must be slightly bent to make sure they go through the trunk lid. Ready bolt can also be just tin to tin if you choose not to go through or attach to the frame.
7. You can fold hoods or trunk lid over, but 60% of the hood/trunk lid must be factory location. Do not slide your hood or trunk forward or back this would mean that 0% would be in the factory location. This means no beating speaker decks or trunk lids down more than 6” in the first 60% of the trunk.
8. Hood must have at least a 12 inch square hole cut out in case of fire. Any holes in 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 are allowed 8 spots to hold the hood on; you must have a minimum of 4 tie down spots. You may have up to 1” all-thread, it may go from the hood to the frame, but must go through the front body mounts. All other tie down spots must be sheet metal to sheet metal only, and the hold down bolts cannot exceed 8” in length! You may have plates for hood tie down, not to exceed 5x5x1/4”square or 6” x1/4” round.
9. Body mount bolts can be replaced with 1” bolts, body mounts can be replaced with steel or washers but must be 1” thickness and have the same diameter as stock spacers. Bolts may extend through body and have up to a 5x5x1/4” square or 6”x1/4” round washer on top, washers must be separate. Bolts must be up inside of frame as factory and may have larger washer inside of frame. If you choose to use a body mount hole for you trunk ready bolt this does not have to be up inside frame, the plate can go on the bottom side of the frame. Radiator support mounts can be removed, and you can suck the radiator support down solid. Absolutely no body mounts may be moved or added. Do not add bolts, wire, chain, or cable in any fashion from the body to the frame other than stated in these rules. Chrysler k-member cars can remove the rubber spacers between the frame and k-member and bolt them up tight. Bolts may be replaced with up to ¾” in diameter. All cars, if you choose to leave in the stock rubber pucks you must leave the metal cones inside the rubber puck. You must leave at least a ¾ space if using the factory rubber spacer. Do not devise a way that enables you to suck them down tight.
10. You can patch rust holes in sheet metal with sheet metal only. Do not cut rust out; weld 2” beyond rust. If your frame is rusted through, call for instructions on how to the fix the rust hole. DO NOT FIX IT WITHOUT CALLING AND EXPECT US TO ALLOW YOU TO RUN IT.

11. Suspension must be stock height. Leaf springs must be stock and made of stock spring material, with a 1”stagger and no springs can be as long as the main leaf. You can only have a total of 7 leaf springs per side no thicker than 3/8" thick. The main leaf must be the top spring in the spring pack and leaf springs must go down from longest to shortest in minimum 1” stagger. You can re-clamp springs, 6 clamps per side with only 4 being homemade. Homemade clamps can't exceed 2x4x1/4”. You can change coil springs to a stiffer spring, you can double the rear springs (they may be tied together in no more than two spots, do not weld them together), or put spacers in sagging coil springs to get your height, do not raise the suspension any other ways except what is listed above. You can bolt, wire, or chain coil springs to rear-end and frame to prevent springs from falling out. 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 wires) from rear end to frame in 2 spots on each side, must go around frame, do not bolt the chain to the frame. 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.
12. Rear end control arms can be reinforced. If you reinforce your control arms you must build them starting with a stock set. They maybe shortened or made longer.
13. Steering/suspension must be remain stock.
14. 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.
15. You may alter your steering column to prevent steering loss.
16. You may cut wheel wells for tire clearance. Fenders may be bolted back together with 5 -3/8” bolts or less with 1.25” diameter washers. No rolling your fenders and welding them. If you wrap or fold your fenders around the front of the core support do not exceed 4 – 3/8” bolts with 1.25” washers to bolt back to the core support of fender.
17. For safety, all cars must have (2) windshield bars extending from the roof of the car to the firewall/dash, straps cannot be any larger than 3/8"x3". If and only if you remove a part of the firewall/dash you are allowed to connect these two bars. The removed part must be completely removed and must be as wide as the vertical bars. The horizontal bars connecting the two vertical bars cannot be any larger than 3/8"x3" straps. No more than 6" of strap material allowed on the roof and no more than 6" of strap material allowed on the firewall. Do not go over 6" on roof or firewall or you will cut. If the firewall/dash is completely cut out you can weld a strap from the dash sheet metal to the dash safety bar, on either side of the cut out portion. Do not connect the windshield bars to the dash safety bar in any manner.
18. You are allowed 2 spots with 4 loops of wire (no cable or chain) in each window opening and may go to the frame. All #9 wire going through the windows must stay in the passenger compartment. When going through the floor and around the frame it has to go through the flat part of the floor. If you don't understand please call first.
19. You may run wire from frame rail underneath back of car, behind rear end with 4 loops of wire or 1 loop of 3/8 chain or cable. This must go around the frame, not bolting it to the frame. Do not pass this wire through the trunk as it would be another body mount, must go under trunk floor.
20. 80s Cars Only - Re-welding of factory frame seems (both top side and bottom side) from the fire wall forward is allowed. 1/2" wide weld bead maximum. The re-welding (12” total length, ½” wide bead maximum, per frame rail) of factory frame seems from the “A” frames rearward is allowed. This rule is to allow the welding of frame seems that were not welded correctly at the factory. Only a total of 12” allowed. This may be 5” on top, 7” on the bottom, etc, for a total of 12”, per frame rail. **You are allowed to cut the frame at the box, pull it down, and reweld it as long as you stay within the 12" maximum of weld. ***Do not paint the frames at all, we want to see the welds***
21. No distributor protectors.
21. No radiator guards.

We will be running compact and fullsize 80s & old iron together.
pay in both classes:

1st $500
2nd $300
3rd $150
4th $50

Pre entry $35
At Gate $45

7:00pm start

With a Combine Derby

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