Propeller Query - LH and RH

[LittleSister]

They responded to the query 'Yes you can use a L/H prop. The gearbox is hydraulic so can work both ways. If you had a mechanical gearbox, you couldn’t do it.'

It's the explanation (yes because hydraulic/not if mechanic) that doesn't sound convincing - at least as a general reasoning.

+1
(It seems to me a conventional mechanical gearbox, but with hydraulically operated clutches.)

If you are sure that you can trust whoever told you that, you're good to go!

Don't trust me (or Beta, though they're usually very good), the PRM manual I linked to above says
- 'INPUT ROTATION: For engines of left hand (anti-clockwise rotation). . . ; OUTPUT ROTATION: Either hand' (Page 7, 1.1. Specifications)
- 'This design permits full power to be transmitted in astern as well as ahead, and also allows right-hand or left-hand propellor rotation in ahead drive, with identical ratios in ahead and astern. (Page 10, 2. Introduction).

 

[macd]

I don't doubt LittleSister's correct, but to be utterly sure, why not ask PRM? They speak passable English:
NEWAGE axles and PRM marine gearboxes

 

[LittleSister]

I don't doubt LittleSister's correct, but to be utterly sure, why not ask PRM? They speak passable English:
NEWAGE axles and PRM marine gearboxes

If you don't trust what you can see for yourself they've written in the gearbox's manual, why would you trust what you might think they've said on the phone?

 

[Ohlin Karcher]

The OP is welcome to watch my PRM 150/Beta 43 move the boat, in the same direction as you push the morse lever..top speed is almost 8 knots in calm water, even with a L/H prop!

 

[fisherman]

Yerbut you can fit the cable to go either way. You can even fix the end of the cable and have the jacket move the lever, in extremis.
I'll stick my neck out having had six PRMs over the years: they are supplied LH or RH, in each case the lever on the box moving forward provides ahead. They will also happily accommodate a wrong handed prop, but the cable has to be fittted to move the lever back for ahead, and the emergency get you home will be wrong handed, ie astern.