Adetheheat
Well-Known Member
For a suzuki outboard 150 outboard is it necessary to get a propeller matched to it? The reason I ask is that the price range for propellers is enormous! They range from £40 to £500.
Propeller matched to engine- necessary?
- Thread starter Adetheheat
- Start date
Chiara’s slave
Well-Known Member
It’s got to fit, clearly, both centre and diameter. The rest is matched to both the engine and the boat. It definitely does not have to be Suzuki original parts though. There are several ‘value’ prop brands. A quick google will find ypu a prop calculator to tell you what pitch and diameter will work best, then google that. It won’t be £500, though it will be more than £40.
William_H
Well-Known Member
With an outboard propeller choice for a small keel boat. it depends a bit on what sort of motoring you anticipate. So if you need a motor to power your boat in to a stiff wind and chappy seas a finer pitch will give more thrust. However if you need it for no wind getting home then a courser pitch will give a decent speed at lower engine RPM so less noise. ol'will
Bouba
Well-Known Member
The difference a wrong propeller can make is huge.... ideally you want the engine to rev in the range specified by the manufacturer....too high can damage the engine and too low will cost you in fuel. Stainless steel props do work better than aluminum.....but the price differential is huge.
Ask the dealer for advice....ask if he has any used props to experiment with
Ask the dealer for advice....ask if he has any used props to experiment with
Dellquay13
Well-Known Member
All of the above. 150hp is a bigger outboard than most on pbo have ever had. Try asking again on the motor boat forum.
The best advice would come from an engine dealer, and the correct choice depends more upon the boat than the engine.
If you do take advice from a dealer, please give serious thought to actually buying from them before you Google the cheapest supplier of their suggestions.
By taking the time to work out the best prop for your boat engine combo they are trying to give a better service than some trader who just has a website and a shipping address.
Last edited:
ylop
Well-Known Member
A key difference between the cost of props is the material they are made from: stainless v aluminium. Stainless is stiffer and so you can get more effective power delivery, but it costs more. Aluminium is cheaper but also bends more easily if you hit something - whilst that can be a downside it does somewhat protect the gearbox etc.
Chiara’s slave
Well-Known Member
Presumably this is a medium size planing craft, such an engine makes no sense on anything else. The first stage is to analyse what’s going on with the current prop. Been through this with double jeopardy, 2 of the bloomin’ things on a RIB. Does it plane quickly on power on? Climb out is a fairly crucial part of performance. And don’t forget how much difference motor trim can make. High speeds, basically max revs, throttle back if it looks like it’ll over rev. Trim again, optimise it. If it’s below max revs after that, a smaller/finer prop is needed, though smaller tends to make that planing transition slower. I’ve just overcome that one on my current RIB with foils on the motor. Amazing difference.
Prop material and cost, get it right first time to avoid expensive mistakes! Experiment with trim and throttle with the prop you have, use a calculator, intelligent interpretation of results is key. Unless your boat/engine combination is modern and common. In which case a quick call to the manufacturer will probably solve the problem.
Prop material and cost, get it right first time to avoid expensive mistakes! Experiment with trim and throttle with the prop you have, use a calculator, intelligent interpretation of results is key. Unless your boat/engine combination is modern and common. In which case a quick call to the manufacturer will probably solve the problem.
