To this end, Westgarage Engineering have developed an electric reverse which uses a geared motor to drive a ring gear mounted alongside the sprocket on the chain drive differential.
When reverse is
required, the electric motor pivots into mesh with the ring gear by
means of a pull cable in the cockpit and the motor is actuated by a
push button or via a solenoid and neutral interlock.
The 0.85HP electric motor is highly geared and is capable of
reversing a BEC even on a gradient. Typically the reverse drives
the vehicle at about 1 mph therefore it is very easy to
control.
The ring gear can be fitted to either side of the sprocket and the
motor can be mounted front, back, left, right or top, space
permitting.
The electric motor can run in either direction thus allowing for
multiple configurations.
The electric
reverse can also be adapted for use on RWD kit cars using
propshafts.
In this instance a gear is fitted to the input flange of the
differential and the motor can pivot or slide into mesh. In this
configuration, there needs to be sufficient space in the
transmission tunnel for the motor, gears and actuating
mechanism.
The electric reverse systems are custom made to fit Customer
configurations.
All Westgarage Engineering supplied chain drive differentials can
be fitted with the electric reverse system provided there is
sufficient space available in the vehicle’s chassis.
Typical price for the ring gears, motor, pivot bracket, actuating
cable and basic wiring is £325.
Cockpit levers, solenoids and additional wiring can be supplied if
required.