Beta Marine offer the following standard gearbox options and reduction ratios. Gearboxes have been selected to match the torque loading of each engine and will be correct for the majority of Narrowboats, Wide Beams or Dutch Barges.
In heavier duty applications such as commercial boat hire it may preferred to specify a heavier duty gearbox and / or different reduction ratios that are tailored to suit their use and environment. Please contact the Beta Marine Help Desk team who would be pleased to listen to your bespoke needs and offer the best solution. Additionally if more appropriate, we offer a service to mount your existing gearbox on to a new Beta Marine engine.
|Technodrive (Mechanical Gearbox)||Ratio||Beta 14||Beta 16||Beta 20||Beta 25||Beta 30||Beta 38|
|Oil Cooler for LH in ahead||Extra||Extra||Extra||Extra||Extra||Extra|
|Technodrive (Hydraulic Gearbox)||Ratio||Beta 14||Beta 16||Beta 20||Beta 25||Beta 30||Beta 38|
|PRM Marine (Mechanical Gearbox)||Ratio||Beta 14||Beta 16||Beta 20||Beta 25||Beta 30||Beta 38|
|PRM Marine (Hydraulic Gearbox)||Ratio||Beta 14||Beta 16||Beta 20||Beta 25||Beta 30||Beta 38|
|Technodrive (Hydraulic Gearbox)||Ratio||Beta 43||Beta 50||Beta 60||Beta 75||Beta 90T||Beta 105T||Beta 115T|
|PRM Marine (Hydraulic Gearbox)||Ratio||Beta 43||Beta 50||Beta 60||Beta 75||Beta 90T||Beta 105T||Beta 115T|
|Hydraulic 'Soft Shift'||Extra||Extra||Extra||Extra||Extra||Extra||Extra|
Optional ‘Soft Shift’ for PRM Gearboxes
Suitable for PRM 280 & 500 Models
PRM gearboxes are renouned for their quality and reliability, however in some applications and / or circumstances they can be slighlty abrupt and noisey when gear changes are made and a transmission ‘jolt’ maybe experienced. The Beta Marine ‘Soft Shift’ option slows down the gear engagement time which provides a smooth and silent transition between forward, neutral and reverse. Soft Shift for PRM Gearbox Guidelines PDF.