The GRB is a full-motion
mechanism specifically designed for the BestTrack Pinewood Derby track.
It operates by remote control to start your race with nobody near the track.
The GRB mounts with a pair of 1/4"-20 bolts (included), using the same
captive bolt system as the rest of the track construction. The electronics
portion of the integrated unit is contained within the cavity of the track.
The actuating component
is a powerful rotary solenoid which pulls the BestTrack's gate open by a
brass pull rod. You must drill a small hole in the peg bar to attach the
pull rod. Diameter 3/32", located so that the pull rod loops within
the bolt channel.
With the GRB, you will
be removing the gate handle assembly that came with your track, and setting
it aside. It is not used with the GRB.
The GRB system is a
balancing act between the cars trying to open the gate by their own weight,
and the gate springs keeping the pegs upright in front of the car. When
power is applied, the GRB overcomes the balance and release the cars. After
power ceases, the gate returns closed by the gate's spring(s).
The springs of the
BestTrack are normally used to make the gate "want" to open.
The are normally attached between the gate corners, and a bolt-nut to
a point uphill. However, with the GRB, you will be reversing the springs,
connecting them between the gate, and a point DOWNHILL instead. Now, the
gate "wants" to stay closed.
your spring tension for the minimum to get the job done. If you race with
some lanes empty, You may need to make minor adjustments to the spring
tension. This is easy.
for important notes regarding removal of friction from your start gate,
and forming of the brass pull rod.
H 3.75", W 3.5",
L 2.5" Weight: 16 ounces
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, starting torque 6.3 inch pounds.
Mounts with 1/4"-20
works with the Light Tree LT3-E
BestTrack Champ Owners.
Protect your GRB
from damage. Do not use
the Champ LINESETUP2.EXE program.
of our Remote Gates may be activated in three different ways. Each
method is sold separately.
Switches $19 to $36
Tree Model LT3-E $189
Control Interface, Model SCI $39
our Light Tree and Remote Start Gate in action!
For the Unlimited
Class Fans, we heard you.
Weighing in at 2 pounds,
10 oz, and generating three times the torque, the GRBB is not needed for
6 lane BestTracks, but could be considered for 8 lane BestTracks and above.
Or for unlimited class races where heavy cars are allowed.
It mounts with four
bolts, otherwise everything works the same. The heart of the GRBB is the
Ledex Size 7S, Model H2809-027 with 17.5 inch pounds of starting torque.
The GRBB and GRB are shown at the right for comparison.
See a video of the Big
Brother GRBB HERE.
GRBB is in stock at
GRBB-D is in stock at $299
The ultimate in unlimited
racing on big tracks. It loafs along operating an 8 lane Pinewood Derby.
But when you go unlimited, where sometimes lanes are empty, and other times
all lanes have cement blocks on wheels, you want the extra torque so that
you don't have to fiddle with spring adjustments. So, you switch to high
power, and problem solved!
The heart of Monster
Man is a Cliftronics Model R34S263, weighing in at 4 pounds, 14 ounces,
and torquing 42 inch pounds. And it does it quietly.
Monster Man is in stock
Monster Man-D is in stock at $469
Family Portrait. The GRB is flanked
by the Monster Man and the Big Brother. All are constructed to meed IEC
and US standards for safety.
All feature optical coupling. There
is no electrical path between the power circuit and the control circuit. Only
a beam of light. The same principle as how your finish line detects a car.
All are compatible with our Light
Trees and computer activation for the ultimate in hands-free racing.