I need some ideas / technical help please...
I have had a new twin blade folding prop from Volvo for my MD2010B Volvo engine.
My old prop was similar but not 100% identical. It was a previous model made by Volvo (twin blade folding too.) The new prop may be slightly heavier, but Volvo have ensured me it is the correct size for my engine and the performance will be the same.
All I have changed is the prop and the cutlass bearing. The engine / gear box was in perfect order when the prop was changed and I assume it still is.
The problem I have now....
The boat speed has dropped from 5 knots max to 2.5 knots max at much higher revs. There is increased vibration. There was no alignment issue before the prop was changed....could there be an alignment problem now? Any tips, ides or suggestions welcome as I am confused!
I have had a new twin blade folding prop from Volvo for my MD2010B Volvo engine.
My old prop was similar but not 100% identical. It was a previous model made by Volvo (twin blade folding too.) The new prop may be slightly heavier, but Volvo have ensured me it is the correct size for my engine and the performance will be the same.
All I have changed is the prop and the cutlass bearing. The engine / gear box was in perfect order when the prop was changed and I assume it still is.
The problem I have now....
The boat speed has dropped from 5 knots max to 2.5 knots max at much higher revs. There is increased vibration. There was no alignment issue before the prop was changed....could there be an alignment problem now? Any tips, ides or suggestions welcome as I am confused!