Tuesday, October 11, 2016

Re: [Electric Boats] So, What ABOUT Paddlewheels?

 

Going fast with any electric boat sounds like a great way to drain batteries to me. And  I like going slow. I had an outboard and the thrill lasted a few minutes. I have seen a rare occurrence when high power was used to get through rough conditions. However I'm not certain it was the only option. Most sailboats don't have a lot of power. 
 The draft and weeds factor is interesting. How many manatees have been scarred by a paddle wheel?  
 I watched some you tube videos of high speed paddle wheels. It was a lot of noise and spray. The ones going slow were great. As were the steamboat paddle wheel projects. I recommend watching those the most. Gorgeous boats!
 A real study of efficiency would be helpful. 
 The variety of applications on this forum is interesting. I'll read through more of the past topics. 

Jeremy

On Oct 10, 2016, at 7:13 PM, Mike Ransom likeabikemike@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:

 

I finally feel like I have one small thing to contribute. I used to do human-powered kinetic sculpture races and about 95% of the machines used paddle wheels, mostly because it was easier to do the makeshift homebuilt type of construction they use. I will say, however, that the few that tried propellers had more trouble with vegetation getting stuck in them.

Mike

On Mon, Oct 10, 2016 at 3:52 PM, king_of_neworleans <no_reply@yahoogroups.com> wrote:
 

The discussion here has touched upon paddlewheels a time or two recently, and I was wondering if anybody has ever done an in depth study on them, particularly regarding their efficiency at low speeds compared to conventional propellors. No, I am not contemplating building a paddlewheeler... just idle curiousity. It seems to me that they should work well until they are turning fast enough to cavitate up a froth and fling water up at the sky. I understand the other drawbacks... big, bulky, kinda fragile, noisy, but they have a certain charm about them, and a split wheel with both sides independently powered would be fairly maneuverable, especially with flanking rudders forward. As a bonus, a paddlewheel would probably catch fewer crab traps than a screw prop, and be better in extremely shallow water.


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Posted by: "P. Jeremy Baker" <childscrick@yahoo.com>
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