Loss of S/V Raindancer (KP44)

[Zonker]

Similar device was used by fishing dories on the east coast of Canada. Just a trunk in the bottom with a U-joint at the front end. Easy to beach. They used 1 cylinder "make and break" diesels..

Similar system. Looks like the strut has a pivot point. The skeg in front isn't connected to the shaft; just keeps the weeds away from the prop

About Us

A Canadian legend A community that supports it The legendary Disappearing Propeller Motor Boat and its Patented “Device” were both invented in Port Carling, Ontario Canada in 1915. Powered with a 3 hp. inboard marine motor, 3100 boats were produced by four different companies over a 44 year...

disproboats.ca

 

[DDW]

They used 1 cylinder "make and break" diesels..

Not wanting to get too pedantic but I don't think that is a thing.

 

[DDW]

Two of the best meals I ever ate were in New Orleans and New York, so some Americans definitely know how to make good food.

Wait - aren't you from the land of deep fried pepperoni? Or does that start a little further north?

 

[Zonker]

Not wanting to get too pedantic but I don't think that is a thing.

Yes it is! You've never heard of a make and break?

Make and Break Engines | Intangible Cultural Heritage

www.mun.ca

Stan Rogers - Make and Break Harbour (if you've never heard his voice give it a minute)

 

[mckenzie.keith]

Speaking of that Shaolin retraction technique, Paul Bieker of Anacortes, Washington designed an excellent anti-whale technology that deserves mention here. Being the PNW, we’re scared here not only of errant humpbacks (many in inshore waters) but also deadheads (those waterlogged trees floating around). Handily solved by the Retract-A-Prop (TM)*. Shaolin-inspired! [emit karate chop sound]

Headed offshore where you’re worried about whales spoiling your ranch dressing pizza dipping sauce moments? Solved with a fin-looking tubercle rudder! Big Boy Megaptera novaeangliae will think you’re just a weird-shaped one of them, always swimming with a fin down, and they’ll look askance and keep their distance. Brilliant camouflage!

However, if you want to be WhaleSafe (TM)*, one of these Riptide 35’s will set you back a few hundred thou, so you’d better start saving! (Another key benefit of the Riptide 35 is that they’re crazy fast, so you can outrun any angry whales who may be pursuing you.)



*Satisfaction guaranteed. Offer not valid outside the Continental United States. Offer may vary. This product is known to the State of California to cause cancer. Offer not transferable. See label for details. Taxes may apply.

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Can that rudder shape be justified by fluid dynamics? Or is it just trying to look more organic? Don't get me wrong, I love it. I just am curious if it is functional.

 

[Jud - s/v Sputnik]

Can that rudder shape be justified by fluid dynamics? Or is it just trying to look more organic? Don't get me wrong, I love it. I just am curious if it is functional.

Pretty sure Paul Bieker has some stuff on his design site about it. All I know/remember is something about how it helps the rudder not stall during a tack on such a performance hull…I’m sure others here know way, way more about this.

 

[Jim in Halifax]

Wait - aren't you from the land of deep fried pepperoni? Or does that start a little further north?

Yup. And the King of Donair. When I was in college (pre-Jurassic era) you knew that you had really tied one on when you awoke to a table covered with scrunched-up balls of tin-foil oozing sticky, garlicy white sauce...

 

[Jim in Halifax]

Not wanting to get too pedantic but I don't think that is a thing.

Yes it is! You've never heard of a make and break?

I've seen plenty of gasoline make-or-breaks but I have never heard of (or heard) a diesel one. There's still one lobster boat running a make-or-break in my area...you hear him before you see him. Its not that loud; just distinctive.

 

[Diarmuid]

Can that rudder shape be justified by fluid dynamics? Or is it just trying to look more organic? Don't get me wrong, I love it. I just am curious if it is functional.

Tubercles can help prevent shear in the laminar flow & subsequent stall of a foil. They do this at some cost to lift efficiency -- but the idea is some lift is better than zero lift, which is what you get if the fluid detaches completely from the foil. Tubercles create vortices that mix the slowed-down air attached to the foil surface (boundary layer) with some faster air just above it, so there is less risk of the air column shearing at moderate to high attack angles. (That ribbon-like twist in the stream just before it goes turbulent is imparted by the 'shoulders' of the tubercle and is what delays stalling.)

Whale of an Idea - Design Engineering

WhalePower’s Humpback-inspired Tubercle Technology marks next evolution in airfoil design.

www.design-engineering.com

 

[DDW]

Yes it is! You've never heard of a make and break?

Make and Break Engines | Intangible Cultural Heritage

www.mun.ca

Stan Rogers - Make and Break Harbour (if you've never heard his voice give it a minute)

Make or break? Yes. "Make or break diesels"? No. Make or break refers to the spark ignition circuit...

 

[Diarmuid]

I can also tell you that a dead sperm whale is not very pleasant either, and that is whether it is still whole or blown into car sized pieces.

Let us take a moment to appreciate the Oregon baseball team that just adopted this great historical moment as their team name.

This baseball team chose an exploding whale as its new identity | CNN

For four games only, the Eugene Emeralds will re-brand and become the Eugene Exploding Whales.

www.cnn.com

 

[Jud - s/v Sputnik]

Let us take a moment to appreciate the Oregon baseball team that just adopted this great historical moment as their team name.

This baseball team chose an exploding whale as its new identity | CNN

For four games only, the Eugene Emeralds will re-brand and become the Eugene Exploding Whales.

www.cnn.com

I’ll see your exploding whale and raise you a ranch dressing ice cream cone…you can’t make this shit up. (“Only in America” ). Ok, back to my wet gear storage area project…I’m outta here..

Hidden Valley and Van Leeuwen Release Ranch Ice Cream at Walmart — and We Tried It

The "most surprising ice cream yet" is available for a limited time

people.com

 

[Diarmuid]

I’ll see your exploding whale and raise you a ranch dressing ice cream cone…you can’t make this shit up. (“Only in America” ). Ok, back to my wet gear storage area project…I’m outta here..

Hidden Valley and Van Leeuwen Release Ranch Ice Cream at Walmart — and We Tried It

The "most surprising ice cream yet" is available for a limited time

people.com

WTF -- buffalo wings a la mode?

 

[sculpin]

Let us take a moment to appreciate the Oregon baseball team that just adopted this great historical moment as their team name.

This baseball team chose an exploding whale as its new identity | CNN

For four games only, the Eugene Emeralds will re-brand and become the Eugene Exploding Whales.

www.cnn.com

That's gotta be one nervous mascot!!!

 

[Zonker]

Make or break? Yes. "Make or break diesels"? No. Make or break refers to the spark ignition circuit...

Ah, I'm an idiot. I thought some of them were 1 cylinder diesels. And the "make and break" part referred to anything that broke on them you could make to fix. Thanks for the correction.

 

[Jim in Halifax]

Not an idiot - just not part of your cultural upbringing on the Wet Coast. Whenever make and breaks are mentioned, I think of Farley Mowatt's book The Boat Who Wouldn't Float.

 

[Fah Kiew Tu]

Not an idiot - just not part of your cultural upbringing on the Wet Coast. Whenever make and breaks are mentioned, I think of Farley Mowatt's book The Boat Who Wouldn't Float.

Yeah - I have a copy of that book.

The local antique machinery guys have make & break engines. Over the years I've donated various old Lister engines I've picked up in my travels. One was a GK model, started on petrol, switched to kerosene. You'd better swap back to petrol before shutting down though else you'd have a hell of a job next time you wanted to run it.

I really like old engines as long as someone else owns them.

FKT

 

[low bum]

Make or break? Yes. "Make or break diesels"? No. Make or break refers to the spark ignition circuit...

Is this the same thing as a "hit and miss" engine? Lots of old timers around here still use these for various things, sawmills, etc. and they're all gas in my experience.

 

[DDW]

Somewhat similar, but not the same. A Make or Break engine uses a spark gap opened in the cylinder by mechanical levers, when the gap opens it arcs as the magnetic field of the coil collapses. They are generally designed to fire every stroke. A Hit or Miss engine has an intake valve that only opens below a certain engine or piston speed, so they fire below that speed but not above. That gives them a characteristic sound, firing every few strokes, or oftener when more heavily loaded. I guess there is no reason an engine could not be both, and perhaps some are.

 

[Zonker]

The Boat Who Wouldn't Float.

The best boating book. Very funny writer.