Gearboxes
This can be a complex area but is absolutely critical to the success of your project. We are very happy to advise you - so please contact us for help - (44) 01202 677776
Things to consider:
Input power to the gearbox (equates to the output of your engine) Reduction ratios - ranges from 1:1 to 3:1 (in certain configurations 4:1) Common configurations:
 Engine - In-line - Propellor |
 Engine - Down Angle (8 to 10 degrees) - Propellor |
 Engine - Offset - Propellor |
| Engine type | Gearbox options for non-commercial use | Gearbox options for heavy duty commercial use |
| Mariner | BorgWarner 10 -18 series PRM 500 (302) ZF 45A |
PRM 1000 (601) |
| Mistral | PRM 750D (402) or PRM 750A (402A) BorgWarner 10 - 18 series |
Twin Disc MG 506/506A PRM 1000 (601) |
| Majestic | BorgWarner 10 - 18 series ZF63A down angle gear |
PRM 750 (401) or heavy duty PRM 1000 (601) |
| Monarch | BorgWarner 5000 Twin Disc MG 502 down angle gear |
PRM 1000 (601) Twin Disc MG 5050 |
| Turbo Plus | Twin Disc MG 5050/5050A PRM 1000 (601) |
Twin Disc MG 5061 |
Drive and clutch plates are available from each gearbox manufacturers:
R & D - suitable in low power applications
CENTA - suitable for commercial craft and fishing boats
VULKAN - suitable for ferries and tugs
