PINEWOOD DERBY BUILDER DIMENSION TIPS

 

PINEWOOD SPEEDWAY WEBSITE

 

 

 

PINEWOOD SPEEDWAY BUILDER NOTES:

1.       AXLE HOLES SHOULD BE DRILLED 1/8 INCH HIGH FROM BASE OF CAR.  IF USING A FLOATING WHEEL, PLACE IT 3/16 OF AN INCH FROM BASE OF CAR.

2.       AXLE HOLES SHOULD BE DRILLED 5/8 O AN INCH FROM FRONT AND REAR OF CAR FOR EXTENDED WHEELBASE.

3.       DRILL HOLES WITH A #44 DRILL BIT (.0860 INCH DIAMETER).  CAN USE 5/64 DRILL BIT (.0781 INCH DIAMETER) IF YOU DON’T HAVE A #44 BIT.  ACTUAL NAIL WIDTH IS .086 TO .088 INCH.  A #43 DRILL BIT (.0890 INCH DIAMETER) CAN BE USED TO REAM THE AXLE HOLE IF THE AXLE IS TOO TIGHT TO INSERT.  DON’T USE A #42 DRILL BIT (.0935 INCH DIAMETER) OR A 3/32 INCH DRILL BIT (.0938 INCH DIAMETER) AS THEY ARE TOO BIG AND THE AXLE WILL SLIDE OUT TOO EASILY.  #44 BITS ARE NOT AVAILABLE FROM HOME DEPOT OR LOWES.  THE BIGGER HOME IMPROVEMENT STORES ONLY CARRY 5/64 BITS WHICH ARE A LITTLE TOO SMALL TO DRILL GOOD AXLE HOLES.

4.      THE BACK OF THE CAR SHOULD BE ¾ INCH TALL IF USING TUNGSTEN CYLINDERS TO WEIGH THE CAR.

5.       USE A 25/64 DRILL BIT (.3906 INCH DIAMETER) FOR TUNGSTEN CYLINDERS TO SLIDE IN EASILY.

6.       THE FRONT OF CAR SHOULD BE ¼ TO 3/8 INCHES TALL SO IT PROVIDES ENOUGH ROOM TO DRILL THE FRONT AXLE HOLES. 

7.       CAR SHOULD TURN ONE TO TWO INCHES OVER 5 FEET TO RAIL RIDE. 

8.       5 OUNCE MAXIMUM WEIGHT.

9.       PINEWOOD SPEEDWAY TRACK ALLOWS UP TO 6 INCHES IN HEIGHT WITHOUT HITTING THE FINISH LINE AS OUR FINISH LINE IS TALLER THAN MANY TO ALLOW FOR TALLER CAR DESIGNS WITH WINGS AND TALL FINS, ETC.

If you are in the Ogden, Utah area, please stop by and see the Pinewood Speedway.  See how fast your car is on our 49 foot aluminum track!  www.pinewoodspeedway.com