Downriver Speedway
Racing Rules
Basic Track Rules
ALL cars will maintain 1/16" min track clearance
ALL cars will maintain a max tread width of 3 1/4"
All bodies must mount from the side No front pinning of body
When viewed from above body should cover chassis, flag and tires except open wheel cars
ALL cars must have front and rear windows except open cockpit cars
ALL classes must have full interior in at least 3 colors
Interior must have 3D drivers head, shoulders and hands on a steering wheel
Interior can be a full model car interior with driver figure or a simple interior card
When viewed from above interior must cover chassis, motor, tires and track
Windows must be clear or tinted, no black or painted windows except funny car rear
ALL race cars will have 3 numbers in proper location and at least 1 sponser logo
ALL racing will be done in the spirit of good sportsmanship and fun
2019 NASCAR Cup Cars
Chassis
Any 4 1/2" chassis that is commercially available
You may brace, reinforce or lighten chassis
Motor must remain in stock angle winder location
Motor
Proslot 2003 Sealed S16D only
Gears, Axles and Tires
Any Gear
Minimum axle diameter 3/32" front and rear
One piece front axle only, independent rotating fronts OK
Front or rear ball bearings OK
Rear tire min diameter .790" width .810"
Front tire min diameter .675" min width .400"
Max width 3 1/4"
Front and rear axles must be centered under car - no offset
.062" ground clearance at rear up to axle including gear
.032" everywhere else
When rocked side to side front tires must touch before chassis
Bodies
Any commercially available modern NASCAR body
1/4" min front and rear bumpers
Max rear spoiler height 1 3/4"
Front wheel openings must be cut out
Body must be painted with clear windows
Must have a painted 3d interior card
Must have 3 numbers in proper location and at least 1 sponser logo
Racing starts Fridays at 7pm
4 1/2" Nascar on a Friday night
It doesn't get any better than this
Secure your spot Friday in this years
Chase for the Downriver Cup
NASCAR Points Series
A new points race for Cup Cars will begin in February with the Daytona races and continue thru November at Homested
The new schedule includes every race on
the NASCAR schedule
including the Chase for the Cup
Points will be awarded similar to NASCAR Rules
2019 Cup Car Champion receives a
New 4 1/2" Cheetah 21 Race Car with Vintage NASCAR Body and Super 16 Race Motor along with becoming this years Downriver Cup Champion
JK Sportsman
JK Cheetah 21 four inch chassis only
Any JK .010 Body
Body MUST be cut on cut line
Hawk 7 Motor Only
Motor may be soldered in place
Any Guide Flag
Any Lead Wire
Any Braids
Any Rear Axle
Any rear tire min diameter .765"
Any JK o-ring fronts
JK 64 pitch 10 tooth pinion only
JK 64 pitch 36 tooth spur gear only
No ball bearings
.062 min. clearance at rear axle including gear
.032 min. clearance everywhere else
Maximum rear spoiler height 1 5/8"
Fun and Affordable Entry Level Racing
JK 4" LMP/GT1
This is a Body Specific Class
Based on the Sportsman Rules Below
Your Choice of 23 LMP/GT1 Bodies
Roadsters
B87B BMW V12 B88B Panoz B89B Lola Judd
B98B Raynard B99B Chrysler B101B MG Lola
B102B Dome B104B Ascari B106B Lister
B107B Porsche B108B Lola B109B Mazda
B110B Audi B151B Cadillac B160B Lola
Coupes
B85B Porsche B86B Audi R8 B100B Bentley
B111B Bentley B113B Mazda Dyson
B114B Lola W/Rib B150B Mercedes CLR
All bodies MUST be cut on cut line
NO cutting open back of body above cut line
You MUST retain a min. 7/8" rear of body
JK INDY / F1
Any JK Cheetah 21 INDY/F1 Chassis
Any JK .010" INDY or F1 Body
JK Hawk 7 Motor Only
Any Guide Flag
Any Lead Wire
Any Braids
JK 64 pitch 10 tooth pinion only
JK 64 pitch 37 tooth spur gear only
Any JK INDY/F1 Front Tire min .750"
Any Rear Tires min .765"
No ball bearings
.050 clearance at rear axle including gear
.032 clearance everywhere else
Great Open Wheel Racing
4" NASCAR Trucks
This is a body specific class
Based on our JK Sportsman rules
Your choice of 6 JK NASCAR Truck Bodies
B63B Chevy B64B Chevy
B65B Dodge B66B Dodge
B67B Ford B68B Ford
Body MUST be cut on cut line
No cutting open back of body above cut line
Vintage 24 Hour LeMans Coupes
This is a body specific class
Based on our JK Sportsman rules
Your choice of 6 Vintage GT Coupe Bodies
RFD324C 330P3 Ferarri RFD329C Chaparral 2F
B51B Ford GT B90B FORD Mk IV
B92B Porsche Carrera 6 B95B Lola T70
Body MUST be cut on cut line
No cutting open back of body above cut line
Rear spoiler may be added
Maximum spoiler height 1 5/8"