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900 Echols Street SE
Vienna, VA 22180    703-319-0840

High Performance, Affordable Accessories for
Pinewood Derby, Hot Wheels, Soapbox Derby, and other racing formats.



GRW Instructions





The GRW is a full motion mechanism specifically designed for plywood and other flat-bottomed Pinewood Derby tracks. It operates by remote control to start your race with nobody near the track. The GRW mounts to the bottom of your track with four self tapping screws included. The electronics portion of the unit is integrated with the actuating mechanism.

The actuating component is a powerful rotary solenoid which rotates your existing peg bar by a brass pull rod. There is wide variety in homemade wood tracks, so we will need to discuss your situation as to the mounting details. Photos of your track are very helpful.


Weight: 16 ounces

Dimensions H 3.75", W 3.5", L 2.5"

Fully enclosed, double-insulated construction, optical coupling.There is no electrical path from power back to the triggering devices, or computer circuits.

Activator: Ledex Size 5S, Model H-2527-032, operating 10% duty cycle, starting torgue 6.3 inch pounds.

GRW: $199      GRW-D: $209

The GRW is designed to work best with light weight peg bars. Some peg bars are not suitable. For example, the Classic Piantedosi wood track has a peg bar made from a 5/4 x 3 board, extended 6 inches on either side of the track. Its large rotational inertia is beyond the capabilities of the GRW.

We offer quality light weight gates consisting of a hinged aluminum angle with vinyl-covered stainless steel pegs to fit any track.

Additionally we can integrate the entire system on to a 1/2" substrate of MDF, to save you the assembly time, optimize performance, and make the system easily removable for storage. Contact us for pricing.

Integrated GRW system for
Piantedosi Classic track.

Caution: All of our remote control gates are designed to be activated only for a few seconds to release cars. They are not designed for, and will be damaged by continuous activation, which will result in overheating. See Terms of Sale

Caution: Smartline Owners. See advisory HERE.

ACTIVATING THE REMOTE GATE  All of our Remote Gates may be activated in three different ways. Each method is sold separately.
Pushbutton Switches   $19 to $36
Light Tree Model LT3   $189
Serial Control Interface, Model SCI  $39

See our Light Tree and Remote Start Gate in action!

New! The GRW now has a big brother!

Weighing in at 2 pounds, 10 oz, and generating three times the torque, the GRWB is not needed for 6 lane tracks, but could be considered for 8 lane tracks and above. Or for unlimited class races where heavy cars are allowed and empty lanes are common. The high torque eliminates the need to adjust spring tension.

The heart of the GRWB is the Ledex Size 7S, Model H2809-027 with 17.5 inch pounds of starting torque. The GRWB and GRW are shown at the right for comparison.

GRWB: $259       GRWB-D: $269