Aston Martin High Torque Gear Reduction Starter - DB4, DB5, DB6

Aston Martin High Torque Gear Reduction Starters (1.9HP)(This starter replaces the Lucas number 25677 starter, used in sixties Aston Martins, DB4 5,6.)

General Information:


Gear Ratio

The gear ratio of the starter is 4.44:1 which enables the starter to develop its unique torque values.



Bearings vs. Bushings:

The Hi-Torque starter is equipped with five (5) full roller bearings while the typical Lucas unit uses two (2) bushings to suspend the armature.



Solenoid Design

The design of the Lucas solenoid is very susceptible to Hot Start Syndrome. The windings of the solenoid are encapsulated in steel. There is no means for the heat to dissipate. The solenoid of our Nippon Denso Hi-Torque Gear Reduction starter is encased in aluminum. Our solenoid is equipped with a vent hole. Every time it is engaged, it pushes (pulls) cooler air into the solenoid area thus virtually eliminating the Hot Start Syndrome.



Technical Data



No load condition @ 11.5 volts

Max current (amps) - 90 or less

Minimum speed (rpm) - 3000 or more



Load condition

8.0 volts are minimum voltage requirements

Torque - .65 kg-n

Maximum current (amps) - 250 or less

Minimum speed (rpm) - 1180 or more



Lock test

Voltage - 2.5v (at least 7:1 CR)

Max current (amps) - 300 or less

Minimum torque (kg - n) - .7 or more



Specifications

Voltages - 12v

Output - 1kn

Rating (seconds) - 30 seconds

Torque rating - 535 ft. lbs



NOTE: Torque rating is based on a 9 tooth pinion gear.