External 'on deck' shaft drive: video.

Lots of applications for this idea, like wing engines, auxiliary sailing engines with zero drag etc etc.....

https://www.youtube.com/watch?v=-hFqhs9ILac

 

There is no such thing as "engines with zero drag". It seems like an inefficient setup with a lot of exposed moving parts.

 

looks awful and dangerous. much better to use an auxillary outboard than all that rubbish cluttering the deck.

 

reminds me of most efficient pedal powered boat setup of Rick Willoughby.

 

LOL...!!

All it needs is a pladdle wheel drive as well.

 

That looks like something I'd improvise in the middle of the ocean to get home after a seized prop

 

This is great....this may the the 70-80 year old barge I saw a few years back.

Note the term "barge" and not brand name like " Sunseeker" or "Azimut" nor "Benetti".

How can a diesel outboard or outdrive do the job any better,cheaper,more reliably than this?

Anyways,as one of the very members who actually spends a lot of time aboard-I've been out for almost 3 months- many times I could have used something like this.

Just last week I was pushing my boat around a remote bay in a remote inlet hoping the tide wouldn't go out much more....as it was my props ended up in the mud.

Anyways,keep on having fun being negative-I'm back out for another month-fishing,kayaking and enjoying life.

 

A Z drive can do it better by being able to steer and provide thrust at a better angle. It is more reliable because it is not a cobbled together contraption. Also, there are not a bunch of exposed moving part than can cause injuries. If a propeller set in a tunnel gets stuck in the mud, the rest of the boat is aground and not moving regardless of propulsion system.

 

Typical old barge stuff. Like the old portable Harbormaster barge outdrives developed during WWII.

http://www.harbormastermarine.com/HMIWebImages/barge_drive_5.JPG

 

"Portable" being a relative term...

 

Having recently seen the damage done to a friend who fell into a moving prop shaft, this looks pretty scary without some guards around the moving parts, would also be real messy if someone fell overboard at the bow.

Not sure I see much advantage over an outdrive or outboard motor set-up

 

True, it is amazing what is considered "portable" in a shipyard with the right equipment.

 

Definitely before the nanny state.

The first thing I thought of was back amongst farmers in Minnesota and Wisconsin and how mangled up they would get when they got wound up in the power take off, fartin' around with the balers, conveyors, choppers and such.

Let me see...a narrow, sloped steel walkway and right where you have to change direction while avoiding a hot exhaust pipe there is a bunch of slightly elevated cables, a pulley and a completely exposed universal joint with a great big snaggy bolt churning away. Add a little rain for slippery, what could go wrong? It's kind of humorous, in a way.

It's interesting to see what lengths they went to in the past to do what they had to do.

Translating the video comments brought out this

So, it's called a side screw or a lame wing. I don't know what punt the lily means, but it sounds kind of descriptive so I might start using it.