Weirdest propulsion system

[gonzo]

What is the weirdest propulsion system or setup you'ver ever seen?

[apex1]

Kistinies

http://www.boatdesign.net/forums/attachments/diy-marinizing/29903d1236579532-making-high-efficency-3-kw-dc-generator-plan-godille-sangria_m.jpg


installed on a catamaran of 2,5 tonnes.

[gonzo]

A good exercise machine.

[baeckmo]

Oh myomy, that explains a lot.....!

[patc]

some unpracticed oarsmen trying to row a reconstruction of an Egyptian vessel from 1500BCE (about 15 tonnes)
http://www.youtube.com/watch?v=qFbEC0pb4JE

[gonzo]

That really cracked me up. What's missing is the slave driver with a whip and the guy banging on a drum.

[kim s]

whats wrong with sculling,I have done it on a 30 ft yacht(3.5 tonnes ) into a marina, Its easy. Obviously no wind blowing and had spent an evening on a bouy just outside the entrance . engine had failed and could not raise anyone from the marina, waited till wind dropped right away as was blowing straight out of the entrance, and in we went.
Being long keeled, we did not fancy the 4-5 tacks to get through the entrance channel.
sculling has been done all over the world by fishing boats and on a lot bigger than a 25 cat.

Kim

[TollyWally]

I saw a pair of these real wierd diesel Chinese outboards on scow/houseboat in Seldovia AK 20 years back. The lower unit was real beefy maybe 5 ft long turning a 20" wheel. It looked like a seagull on steroids. At the top it had a flat universal mounting plate. A one lunger diesel motor was bolted onto this plate. It had a belt that ran from a shiv on the motor to a shiv on the lower unit. I have wished many times that I had taken a picture of it. I've never seen another set up like it, either in real life or on the internet.

[PAR]

Flippers on the end of human legs . . .

[yipster]

http://www.boatdesign.net/forums/attachments/powerboats/92d1017209356-worlds-fastest-flats-boat-turbinpwr.jpg
http://www.boatdesign.net/forums/powerboats/worlds-fastest-flats-boat-449.html shows a curious ob

[CDK]

I've never really seen it, but there is a European patent granted to a lunatic who puts the outboard engine inside the boat in a sort of long tub. The water expelled by the prop flows forwards on both sides and returns to the prop.
The inventor points to the advantages, such as using clean or distilled water to prevent growth on the prop and easy maintenance. He claims the innovative propulsion can also be used for trains, planes etc.

It clearly shows that proving something stupid will work by pointing at a granted patent in fact only proves you are not the only idiot around.

[Leo Lazauskas]

It clearly shows that proving something stupid will work by pointing at a granted patent in fact only proves you are not the only idiot around.

I seem to recall that an engineer in Australia was granted a patent for a "circular transport assist device" or some similarly stupidly named device.
I think he did it to show what clots work in the Patent Office.

Leo.

[kistinie]

Any new proposal or patent should always be viewed as a ****, before studying it.
It will not open you a lot, but else, this is chaos, any idiot will feel like talking about idiot claim.
And if the **** works, idiots will mess with our smart and good looking business.
No thanks.


So only tested, and marketed, new ideas, please.

Boating is serious.

[hoytedow]

weedeater fan

[PAR]

Kistinie, do you ever have anything literate to offer a thread? Is it a translation issue? Because every time you enter a thread, your comments are illiterate or so out of hand that I'm quite unable to figure out what you intend. After your participation in a thread, one of two things occur, you are ignored and very rarely you actually contribute to the thread or the thread dissolves into discord around your incisive illiteracy and frankly often lunatic ranting.

I'm IHIQS (143 for those that know), so understanding you shouldn't be a problem.

[Leo Lazauskas]

... you're incisive illiteracy ...


your
:P

[PAR]

Every so often Leo . . . but not as a rule.

[Leo Lazauskas]

Every so often Leo . . . but not as a rule.

I couldn't resist :)

But to matters more serious...
What legal sanctions is a naval architect subject to?
I assume it varies a little from country to country, but given the international nature of the profession and the products and services, is there a general set of principles and guidelines that can be viewed online?
(Or would it be better to ask in another forum?)

Chears and regrads,
Loe.

[PAR]

It's different in every country, but most can and will charge those seemingly responsible for an avoidable tragedy. An example would be a design that clearly upon investigation after an incident, shows a lack of acceptable stability or capacity.

Leo, I'm sure you're aware of the builder of Excalibur was found guilty culpable manslaughter. This is evidence enough I think. Now each case is specific and this one suggests there's more to the story we don't know, but integrity was a main issue I believe.

He later won an appeal with the appellate court declaring (rightly so) that he was unaware of the faulty work. The judge was actually reasonable saying ". . . This case would appear to be a case of manslaughter by omission . . ."

In short, with this case the actual person(s) responsible, hid the crime and people died. It's unlikely they'll ever have the truth, but an indication of what can happen to a builder or designer and possibly why I'm in such a tizzy in another thread (spelling errors and all).

[Leo Lazauskas]

It's different in every country, but most can and will charge those seemingly responsible for an avoidable tragedy. An example would be a design that clearly upon investigation after an incident, shows a lack of acceptable stability or capacity.


So, essentially, no different to the sanctions that many engineers are subject to?

[PAR]

Precisely . . .

[mark775]

Perhaps this would be a good time to dismount. "Congratulations", the site says, "You get to buy our coffee mugs and T-shirts (add a $59 initiation fee)!" Nice to know there's now an IQ club for everyman.


39566

[apex1]

...Is Kristine vainglorious and haughty because some may not speak French? I admit that I have no idea what her point is but some of the difficulty is suredly with translation.

There is no such problem Mark. He understands us pretty well, and the "club members"* at least, understood his 178 attempts to introduce new laws of nature.


Regards
a member
*151 according to Hamburg-Wechsler-Intelligenztestreihe
160 to Stanford

[mark775]

Yes, indeed!

[TollyWally]

LOL,
Another way to measure our penises. If you send them the money to join, how many points does it remove from your score? I think Groucho Marx put it best.

[powerabout]

It's different in every country, but most can and will charge those seemingly responsible for an avoidable tragedy. An example would be a design that clearly upon investigation after an incident, shows a lack of acceptable stability or capacity.

Leo, I'm sure you're aware of the builder of Excalibur was found guilty culpable manslaughter. This is evidence enough I think. Now each case is specific and this one suggests there's more to the story we don't know, but integrity was a main issue I believe.

He later won an appeal with the appellate court declaring (rightly so) that he was unaware of the faulty work. The judge was actually reasonable saying ". . . This case would appear to be a case of manslaughter by omission . . ."

In short, with this case the actual person(s) responsible, hid the crime and people died. It's unlikely they'll ever have the truth, but an indication of what can happen to a builder or designer and possibly why I'm in such a tizzy in another thread (spelling errors and all).
Where does the libaility shift when that boat is fully classed..here in Asia you can get them to stamp anything and they do!

[gonzo]

I would like to see examples of weird propulsion systems in this thread

[powerabout]

ok
Early surface drive.
A fuel barge that was used in Phuket 20 years ago had a long slot cut into the aft centre of the barge.
There was a v8 nissan truck engine with radiator complete with clutch and trans mounted on an angle.
At the u joint at the back of the trans a ladder frame was built hingeing either side of the ujoint.
This frame had a thrust bearing right there and the long shaft say 10 foot down to the prop in a conventional skeg bearing and about a 24" dia prop.
The ladder had an 'A' frame gantry mounted over it to lower this down into the water.
I guess it worked

[yipster]

I would like to see examples of weird propulsion systems in this thread
http://www.garth.ca/weblog/wp-content/uploads/2007/12/nukes.jpghttp://www.ornl.gov/info/ornlreview/rev25-34/315.jpg
whats weird? the side drive i had on my barge long ago? engine in bow shaft in crane, prop on the side, i say weird but time goes on as i read this
http://images.google.nl/imgres?imgurl=http://www.navy.mil/navydata/cno/n87/images/ricko300.jpg&imgrefurl=http://thoriumenergy.blogspot.com/2008_06_01_archive.html&usg=__-koxlh_lY9NMd5zi6JSzKRGOl5U=&h=1800&w=1392&sz=509&hl=en&start=27&um=1&itbs=1&tbnid=A5eytELBJZLXcM:&tbnh=150&tbnw=116&prev=/images%3Fq%3Dside%2Bpropulsion%2Bship%26ndsp%3D20%26hl%3Den%26sa%3DN%26start%3D20%26um%3D1 and learn there are over 900 types of reactors, but promise to make only one nuc post
rickover made a weird propulsion system in his days aqueous homogeneous reactor (http://en.wikipedia.org/wiki/Aqueous_homogeneous_reactor) and some waterboiler can even called green i read soemwheres

o yeah, how about the morph warpdrive eh..
http://www.weirdwarp.com/wp-content/uploads/2009/10/Star_Trek_Warp_Field.pnghttp://www.rexresearch.com/boats/1trac.gif

[gonzo]

I remember in a 1950's Popular Mechanics a log barge with a Jeep connected by a chain on the wheel to a shaft. They went down the Congo river with it.

[SamSam]

This is weird...

http://www.deutsches-museum.de/uploads/pics/rotor2_600b_01.jpg

When a cylinder rotating around its own axis is exposed to an airflow moving at right angles to that axis, the cylinder experiences a lateral force that acts at right angles to the airflow and the axis of rotation. This force is known as the Magnus force after its discoverer.

Seen from above, the phenomenon appears as follows:

A vertical cylinder rotates clockwise

The wind comes from the West (left)

The Magnus force pulls the cylinder to the North (above)
http://images.google.com/imgres?imgurl=http://www.deutsches-museum.de/uploads/pics/rotor2_600b_01.jpg&imgrefurl=http://www.deutsches-museum.de/en/information/kids-co/inventors-trail/flattner-rotor/&usg=__pm-iuxHfzmO-GoabIOWzO1LFhFA=&h=335&w=600&sz=24&hl=en&start=6&um=1&itbs=1&tbnid=AAb_PS6x99AnWM:&tbnh=75&tbnw=135&prev=/images%3Fq%3Drotating%2Bsail%2Bpropulsion%26hl%3Den%26client%3Dfirefox-a%26channel%3Ds%26rls%3Dorg.mozilla:en-US:official%26sa%3DG%26um%3D1

[kistinie]

Kistinie, do you ever have anything literate to offer a thread? Is it a translation issue?

No, Nothing ;-)

Rotor boats are not as crazy as it may sound.


The first boat equipped like this in 1926 crossed Atlantic via south America.
Reported speed was 4 to 9 Knts

One of the last try was in 2008 on a 130 meters cargo built by Lindenau-Werft shipyard in Kiel.
Any news of this boat?

In 2009 the Finland-based maritime engineering company Wärtsilä unveiled a concept for a cruiseferry that would utilise flettner rotors as means of reducing fuel consumption.
http://en.wikipedia.org/wiki/Rotor_Ship

More on Magnus effect (also used in Boomerangs and golf balls)
http://en.wikipedia.org/wiki/Magnus_effect

[powerabout]

also used on stabilisers on high speed craft ( like 20+knots) but in the water

Just for interst sake,,how about a 80m vessel that uses Voith Schnider thrusters as main propulsion????
ALL electric too....

I hope to have a job on that soon

[jehardiman]

I've never really seen it, but there is a European patent granted to a lunatic who puts the outboard engine inside the boat in a sort of long tub. The water expelled by the prop flows forwards on both sides and returns to the prop.
The inventor points to the advantages, such as using clean or distilled water to prevent growth on the prop and easy maintenance. He claims the innovative propulsion can also be used for trains, planes etc.

It clearly shows that proving something stupid will work by pointing at a granted patent in fact only proves you are not the only idiot around.

You know, depending on how it was set up, it may work....not very efficient, but you can make inertial proplusion systems.

http://books.google.com/books?id=B-MDAAAAMBAJ&pg=PA167&lpg=PA167&dq=popular+mechanics+black+box+moves&source=bl&ots=Zu571M81Vp&sig=jQ6JHusxPhDxC9onEH9kwaEJ6Gs&hl=en&ei=o2RsS6LBDJOmsgObmd2yDQ&sa=X&oi=book_result&ct=result&resnum=6&ved=0CBwQ6AEwBQ#

[CDK]

You know, depending on how it was set up, it may work....not very efficient, but you can make inertial proplusion systems.



Yes, you can move a small boat by shifting your body weight or running back and forth, fast in one direction, slow in the other. The math is complicated, keywords are mass, delta V and friction.

There are machines to compress and polish a fresh concrete floor in factory buildings so it needs not be painted, yet absorbs no oil or water. Some sort of wide cast iron sledge with a counterweight, engine and cabin spring mounted on top of it. No drive train, no wheels, just a hydraulic system to change the angle between sledge and counterweight. The driver has a control stick and a throttle pedal and can move the vibrating heavy machine in any direction.

By converting part of the energy in one direction only from kinetic to thermal by applying local friction, the resultant vector in the other direction is larger and can propel a vehicle.

[Boston]

obviously you guys have not had the always exhilarating experience of operating a large rotary floor sander with say a 40 grit paper on it
you control the direction by adjusting the angle of attack
assuming you dont dig a hole in the floor first that is

sane basic idea as above I just never knew what it was called

[CDK]

Yes Boston, the same principle.
You could even move your boat with it as long as there is any floor left.

[peter radclyffe]

Master Whisk, Variable Speed, Whisks Up To 5 Gallon, Beats Up To 50 Eggs
Dynamic International - Model 048-FT97
SKU: FT97
Shipping Weight: 10.00lbs.

[SamSam]

How about a lifesize putt putt boat? Maybe a full size one powered by baking soda?

http://sci-toys.com/scitoys/scitoys/thermo/little_flame_boat.jpg
http://www.retro36.com/bmz_cache/a/a162a90b0524da49dc76658a3c4d237f.image.280x143.jpg

[baboonslayer]

I have a weird one that I just thought of. Might not work, don't really care anyway. This idea for an almost perpetual motion motor popped into my head...

it is pretty simple. The same pole magnets repel, creating a force offset of the crankshaft, creating rotational energy.

another weird one to try is to put a rudder on a small boat, preferably a wide bladed one, and attach to the stern etc., then try moving the tiller handle back and forth so the rudder flaps like a fish's tail. The boat should move forward. (this might actually work :D).

[hoytedow]

http://www2.ed.gov/pubs/parents/Science/soap.html

[troy2000]

I have a weird one that I just thought of. Might not work, don't really care anyway. This idea for an almost perpetual motion motor popped into my head...

it is pretty simple. The same pole magnets repel, creating a force offset of the crankshaft, creating rotational energy.

another weird one to try is to put a rudder on a small boat, preferably a wide bladed one, and attach to the stern etc., then try moving the tiller handle back and forth so the rudder flaps like a fish's tail. The boat should move forward. (this might actually work :D).
Ever heard of sculling?:p

I've moved small boats short distances by working the rudder the way you describe. But it won't get you very far very fast, for the amount of work put into it.

[SamSam]

I have a weird one that I just thought of. Might not work, don't really care anyway. This idea for an almost perpetual motion motor popped into my head...

it is pretty simple. The same pole magnets repel, creating a force offset of the crankshaft, creating rotational energy.

another weird one to try is to put a rudder on a small boat, preferably a wide bladed one, and attach to the stern etc., then try moving the tiller handle back and forth so the rudder flaps like a fish's tail. The boat should move forward. (this might actually work :D).
I believe you've just invented sculling and the electric motor. I too believe they might work. ;)

[dieseldude]

Weirdest engine I ever worked on was a Deltic in the old "Nasty" type patrol boats.:rolleyes: