2stroke or 4stroke

[claudevella]

1.  Reduce the pitch by 1" on your existing propeller price ?30.00
2.  Purchase another propeller either 9x6.1/4 or 9x5.3/4 price ?55.00 (each)
All prices + P&P + VAT

this is what steel dev. told me i need. How do you check the revs with out a rev meter?

[skip]

It's good that they can offer a prop. That's the problem dude, you can't without a rev counter. If you want as we both need to check our rpm's on our auxilliary engines. It shouldn't cost too much to buy a rev counter and the wiring will be the same if you like.

[Gazzetta]

I have an 18ft boat and as a trolling motor I have a 15 hp mariner.  The maximum speed I can get is 6 knots, is it possible to get a higher speed ? Maybe change the prop.  I know the boat isn't a light one but still I think I can get a higher speed !!

Thanks

Chris 

[skip]

Chris, looks like you too would benefit from attaching an rpm gauge and seeing whether you are hitting WOT.

As Jonathan pointed out in a similar post, boats have a maximum displacement hull speed and it could be as we all have planing boats that we are hitting those hull speeds. Still with a rpm gauge we will know for sure.

Will have to look into getting one so we can see what props we all need