PRM80 Marine Gearbox

Simple Mechanical Operation: Lightweight, Compact & Rugged
The PRM80 gearbox is designed for use in pleasure craft where a simple lightweight transmission is required.
The cone clutches for both ahead and astern are mechanically operated and require no adjustment.
The gearbox is purpose built to operate with standard rotation engines i.e. providing a clockwise rotation of the gearbox input shaft when viewed on input. In forward drive the output shaft rotates opposite to input shaft therefore requiring a right hand propeller.
The reduction ratios offered are 2.04:1 and 2.5:1 with a common astern ratio of 2.5:1
The heavy duty aluminium gearcase is externally ribbed for strength and heat dissipation.
Direction actuation is by a lever with a positive detent positions for Ahead, Neutral, and Astern. It is suitable for use with proprietary remote control operating systems which must be of the single lever dual action type, i.e. MORSE MT3 or SL3 which operates the engine throttle in conjunction with the gearlever.

 

Nominal Power Ratings, PRM80 Marine Gearbox
AHEAD RATIO PLEASURE LIGHT COMMERCIAL
BHP kW BHP kW
2.04:1 1.12 0.84 0.74 0.55
2.50:1 0.98 0.73 0.65 0.48
Max Input Power 47 35 32 24
Maximum operating speed: 5000 rev/min
Note: These powers are expressed in BHP and kW per 100 rev/min engine operating speed, and are measured at the engine flywheel.  Ratings have been established to ensure the long trouble-free life of the gearbox which should not, therefore be used at powers in excess of those shown.

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Noss Marina,  Bridge Road,  Kingswear, Dartmouth,  Devon,  TQ6 0EA
Tel / Fax: +44 (0)1803 833343,  Mobile: 07855 255217  VAT Registration No. 737 278 307