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Of what material is Propulse made?
Composite Material.

Is the material strong enough?
The composite that is used for ProPulse is stronger than aluminium and resistant to corrosion and cavitation damages. We give a three year warranty on the hub.


Does it fit to my engine?
Propulse fits all of the most common outboard brands and stern drives between 18 and 300Hp (see motor specification )


Why four blades instead of three?
A four blade propeller is easier to balance and has a better grip in the water.


How many different pitches can be adjusted?
On the smaller models S4 and S6 12"-16" ( the middle pitch is 14" and can be increased 2" or decreased 2"). On model S8 16"-20" (the middle pitch is 18" and can be increased 2" or decreased 2") and on model S9 15-21" (the middle pitch is 18" and can be increased 3" or decreased 3").


How can you adjust the pitches?
By slackening the bolts about 4 turns, so that the ring can be lifted about 2mm, the chosen pitch can be set by turning two opposite blades. The pitch is locked by retightening the bolts crosswise. (se operating instructions "Adjusting the pitch").


What is the advantage with variable pitch?
To be able to optimise the rpm on your engine and by that getting the best performance for your combination of boat and engine in terms of highest speed and lowest fuel consumption.


What pitch is correct?
At full power your engine should run at a particular rpm range (see instruction Manual for engine) it is harmful to run the engine above or below the recommended range. If maximum rpm are too high or low, adjust the pitch until the correct setting has been achieved.
To increase by 200rpm – Reduce the pitch by one increment
To decrease by 200rpm – Increase the pitch by one increment


What is the advantage with replaceable blades?
In the event of damage it is easy to replace blades on the spot and carry on immediately with your trip, cheaper than a repair or buying a new propeller.


How do I change blades?
By unscrewing and removing the four bolts so that the ring and the rear hub section can be removed and the damaged blade replaced.

In the event of a damage do all four blades break?
The blades are designed to snap off in the event of the boat running seriously aground. This is to prevent damage to the engine and transmission ( the most common is that one or two blades break).