This unit has been developed to meet a requirement where high torque, lower r.p.m. than direct drive is required. It is particularly suitable for marine applications where driving a large propeller at lower r.p.m. is very efficient and quieter.
The unit is powered by MFA/Como Drills Torpedo 850 series 12v d.c. 3 pole motor, with heavy duty carbon brush gear and double ended 6.35mm drive shaft. The motor is mounted on a rugged 1.5mm steel right angle bracket. The 2.1:1 reduction is achieved via two precision aluminium timing pulleys utilising a high quality toothed timing belt. The final drive is delivered through two block mounted precision ballraces with a 6mm keyed steel output shaft.
The Torpedo 850 motor version will deliver around 1380 g.cm torque (0.14 Nm) running at maximum efficiency.
Output shaft speed on 12v (850 motor): 4000 r.p.m. approx.
Operating Voltage 12 volts.
Current approx.10.82A at max efficiency.
RPM at 12.0v - 8311 at max efficiency.
Weight 595g (approx)
Shaft Diameter - 6.35mm