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Contact us:
 (44) 01202 891824
Fax: (44) 01202 895882
General enquiries:
engines@mermaid-marine.co.uk
Sales: Mark Tilley
Engines, water-jets & accessories
mark@mermaid-marine.co.uk
Parts: Jason Murrell
Spares, transmissions, overhaul
& out of production engines
jason@mermaid-marine.co.uk
Customer Support: Tracey Lambert
tracey@mermaid-marine.co.uk
Technical Support: Cyril Snare
cyril@mermaid-marine.co.uk
Owners Club: Barbara Snare
(44) 01425 477545
club@mermaid-marine.co.uk
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Gearboxes - matching the gearbox to your engine: |
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 891824
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
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Engine - Down Angle (8 to 10 degrees) - Propellor
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Engine - Offset - Propellor
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| 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)
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| 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 |
| Stern Drives |
Suppliers of Mercruiser & Konrad stern drives to suit all configurations. Contact Mermaid for details of the application to suit your requirements.
KONRAD and STERN POWER manufacturers of heavy duty stern drives.
KONRAD Sterndrive
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BRAVO stern drives
BRAVO 1 - single small propellor - sports boat
BRAVO 2 - single large propellor - workboats
BRAVO 3 - twin contra rotating propellors - sportsboats
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