 In drag racing, a
transbrake is a modified
valvebody installed in
automatic transmissions.
It selectively places the
transmission in first and
reverse gears simultaneously,
effectively holding the race
car stationary as if the foot
brake was applied. The
transbrake is activated by the
driver by applying electrical
current to a solenoid at the
transmission. With the
transbrake engaged
(transmission locked), the
engine throttle can be
increased to any position
(opening) in preparation for
launch without the driver
worrying about the car
creeping forward.
Milliseconds before the
green light illuminates on the
Tree the transbrake is
released (by the driver
releasing an electrical switch
or by a delay box \"timing out\"
originally triggered by the
driver releasing an electrical
switch) and the car launches
forward, its engine already in
the higher power band and
the transmission already in
low gear. Dynamic
Racing Transmissions has
spent countless hours
developing their version of the
transbrake for each specific
application. Each unit
is hand assembled according
to the specs of the customer
and is not an off the self
piece. |
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