Choosing the correct prop pitch - Page 2

daviesd · 16 May 2004, 17:17

Yep, pretty peed off.

Took it out on the boatyard that fitted the engine and now am looking at a new Mercury Optimax 150 or 200 ( great price after lots of *negoitiating*

).

Any idea which one would suit the boat better????????

DJL · 16 May 2004, 17:52

Not sure why you need a new engine....you must be able to increase the RPM with a new prop from somewhere.

But anyway.... What’s the boats max HP rating? - I think, depending on the exact model, its either 175HP or 200HP. If you can I would get the 200HP - you can never have enough power

daviesd · 17 May 2004, 20:30

Just ordered the 200 today - I think you're right, power is good.

We probably could get the engine to rev. , but the props were going to cost over £800 and no one could really tell us which would be best 19 or 21".
Decided to go for the warranty and the new lump, should burn much less fuel too. That yam on full tilt was heading for 20gph.

Daniel · 17 May 2004, 20:58

Have you got a buyer for the VMax... i feel a project coming on

oh, and what prop will you be running on the new Opti? Or should i not ask!

daviesd · 18 May 2004, 22:53

Dan

The engine has gone back to the yard that put it on in the first place. I have since had two people ask if they can buy it - typical

. If you're interested I can give you the phone number of the yard...... It will probably go for about £4k.

I spoke with Barnet Marine who built our boat and they basically suggested a 21" prop. At least as its a new engine, the yard said they will change it if needed.

Took it out for a run tonight as it was so flat over here - 30mph @ 3000rpm 6.2 gph. Not too bad really - oh well, new engine should be here by the weekend.