Harbor Master 19

[Toni V]

Jacques;

I take prop slip in account in my formula.

Just to clarify more.... Slip has no effect on speed. Propeller efficiency does have the effect.

For example a 50hp outboard: The fuel gives 200 hp, engine gives 60hp, propeller shaft gives 50hp and optimum propeller pushes to boat forward by 40 hp or poorly fit prop gives 25hp power. All that wasted power ...

But let's get back to the slip. So what I'm talking about is that theoretically slip and efficiency are totally different. But in most real world cases the excess slip in planing boats will reduce efficiency.

And Jacques is right about the new engine. Especially as it's been running on too high revs and new motor does not do it eagerly.

If you want better performance you have two choices - try to get the prop slip less or use propeller with more pitch. Both ways gives you less rpm's and more speed.

And the best thing - don't worry too much, enjoy your boat

[JimW]

Uncle,

We just want all the spectators to be scratchin' their head and wondering how a little 50 could ever be pushing that tank around at that speed, " ....is it twins?" I remember a casual observer thought my boat might do 25 or so with that 115. You should have seen his jaw drop when I told him the tank did 46+.



It is very clear that you are happy, but we are all fiddlers and feel the need to help you fiddle with it. We don't know each other but if we saw each others' boats we'd say "hey, there goes my buddy's boat."

[JohnH]

It is very clear that you are happy, but we are all fiddlers and feel the need to help you fiddle with it. We don't know each other but if we saw each others' boats we'd say "hey, there goes my buddy's boat."

You got it right there Jim......

Ingat ka

John H

[UncleRalph]

This is my HM19, "Miss Anne", at the Mid-Atlantic Small Craft Festival at the Chesapeake Bay Maritime Museum in St. Michaels, MD last weekend. It won second place in its category - contemporary design built with modern materials. I was suprised it won something because it is not the normal kind of boat people bring to this event. In fact out of over 120 boats it was only one of two power boats. Most the boats at this event are small traditional sail or rowing boats.


Ralph

[Copro]

Uncle Ralph,

Where did you get those front windows??? I really like that concept, to get the breeze going.

Thanks Jody

[ArizonaBuilder]

Congrats on the second place finish.

Sure is one nice looking boat.

[UncleRalph]

Where did you get those front windows??? I really like that concept, to get the breeze going.

From Wynne Enterprises at http://www.wynneinc.com/

They weren't cheap, but were less expensive than other companies that make custom made windows. I sent them a template of the window cutout and they made the windows to fit.

Ralph

[Yoda]

Ralph, a well earned award I would say. Congratulations on a not suprising outcome. Your HM19 is one of the best looking home builts I've ever seen. And to JM too, for the design. Hip hip..............

[Rick]

I've seen pics of your boat before, but this one really shows it off -- nice, Ralph!

Is that a sharpie schooner in the background? Another sweet boat! My wife refers to this sort of thing as "boat porn."

[UncleRalph]

Is that a sharpie schooner in the background? Another sweet boat! My wife refers to this sort of thing as "boat porn."

It is a very nice version of Commodore Ralph Monroe's Egret. Definately a sharpie, but I think it is a ketch not a schooner.

Ralph