Duffy Electric boats....?

Yeah I got the version with the anchor roller and the bug-eye lights on the side, just lucky I guess.
Not changing anything right now, bought a set of new lights yesterday and $80.00 says I will keep them for a while: The Starboard light is already replaced, now I need to bust tbe Port one just to get my money's worth
Or be more careful when docking.

Just got back from a morning cruise on the New River, it is a different experience
gliding along with no fumes, no noise and no vibration as well as no trip to no stinking gas station, guess I am falling in love with this Duffy boat after all

As for you local guys, stop by and go for a Duffy ride, you bring the beer, I bring the gas.

You have not seen the Duffy Dancing Girls yet have you...?

These gals don't need no pole.
(Now in school to get their STCW )

Duffy Prop

Been talking to the Customer Service folks at Duffy about my prop.
Seems there is no alternative to a plastic prop, they keep talking doom and gloom if I fit a bronze, SS or alu prop on the Duffy.
Asking about size and pitch I get this answer:

Hmm, big deal and a secret one..

Here is the prop


It is a few mm out of true, will take it to a prop shop Monday, but doubt they can do anything and the boat will sink or explode if I put on a metal prop according to the Duffy folks..

Me too.
Like Ford won't tell ya what kind of tires or sparkplugs ya need to keep the thing going.

The shaft is SS and I assume the bearing is bronze, not too much difference on the galvanic scale.

I had the Duffy surveyed the other day and the surveor recommended a metal prop.
Also took a Kiwi Yacht Engineer for a Duffy ride the other day and he suggested an aluminum prop.
Any other expert opinion out there..?

Got the name on the stern today, finally:

yeah, instant torque and the shaft is reduced down by at least x 1/2 using a "fan-belt" for slower turning and even more torque.

Perhaps a non-flexing bronze prop would make the belt squeal or cause other problems, no way of finding out as the information is secret.

Will probably launch again this coming week, no bottom-paint was required, a few baby-barnacles had attached themselves on the keel, some grass on the water line, not worth the $700 most yards quote for a bottom job on this little boat.

Plastic Prop

Had the plastic prop computer scanned today:
Based on these numbers, how may RPM to achieve 5 knots..?





A similar Bronze prop will cost $562, guess I will stick with the plastic prop..

Jeez, I am glad there is smarter people than me around here.
I kind of dreaded pulling out the calculator, but now I don't have to.

I was guessing 500 RPM because the prop is rather big for a low-HP motor.

My (previous) sailboat had a 16" wheel with a 10.5" pitch turned by a 51 HP Perkins and a 2-1 Hurt Tranny for a best speed/RPM or 5.3 knots and 2100.
More RPM and less pitch than this here plastic prop, but it had more "cup", and probably less slippage than the Duffy prop.

I probably should just go out and enjoy the boat instead of turning it into the Space Shuttle.

Capt J, you just earned yourself a Duffy Ride with cold beer and Lusty Dancing Girls, anytime you are ready, give me a shout.

You ever heard of the Golden Girls...?