Fabers Paddler Hydroplane

[Ernie Lazenby]

  These are Fabers drawings submitted to the USA patent office. This is the model I mentioned in my introduction post.
  A couple of pictures of the build very soon.

[Ernie Lazenby]

Sorry fiorgot to mention all the scribble and lines on the drawings are mine done to help me draw up sections.

[kno3]

Is that boat really going to be able to plane? Curious...

[kiwimodeller]

Boy I really do hope it does! It would be a sight to see and we could all start thinking about how to build a paddler to break the world waterspeed record. Where would we be without people who dreamed  eh??

[Dinosaursoupman]

Hello Ernie and PD's,

Was a prototype of this design ever built? Was it successful?

Here is my uneducated prediction as to what is going to happen;

I notice in the diagram a shroud that fits over the wheel (Notated as K'). Without this shroud the paddlewheel would fill the hull with water in a matter of seconds, so the shroud is necessary. At the same time I see this shroud as a problem. Upon starting the paddlewheel, I forsee all the air within the shroud being sucked out and the water that replaces it will cavitate (simply spin around the paddlewheel). There will be little forward motion, if any, and not enough to make the hull plane.

Even with angled buckets, I still think at any kind of RPM the paddlewheel will "slap" the water rather than push the water. And that would be only at start-up. After that, the aforementioned problem would follow.

I would certainly like to see you build this Ernie and it prove me totally wrong. Like I said before, this is only an uneducated guess. I have no math and no experience with paddled speed boats to back up my prediction.

And if it doesn't accomplish what it was designed for, turn that four cylinder engine sideways and put a prop on her. It will almost certainly hydroplane then.

Randy

[Ernie Lazenby]

 A lot of the concerns expressed in this thread are covered in Fabers text he submitted with the drawings.They are an interesting read!

 The point of this exercise is to prove or disprove his theories. I have no idea if the model will work but as they say if one does not try one will never find out!

  The construction has started.

[Red_Hamish]

Hello all, I was listening to the radio last week and the person being interviewed had a wonderful quotable sentence. "If you can dream it, it can be done! " An excellent ethos to work to.

cheers

Jim

[Ernie Lazenby]

Okay I can start posting some photos first the Paddlewheel under construction.  Painstaking work!

[Ernie Lazenby]

and the stepped hull. Note the big hole in the middle of the boat where the padle wheel fits into.

[Eddy Matthews]

Looking really good Ernie - You've certainly made some progress in the last week!

Regards
Eddy

[Ernie Lazenby]

Thanks Eddy , you know me I have to make progress before the jam jar arrives!

[scotfriend]

Hi Ernie,

do you have more photos of the wheel, it is an interresting piece of engineering.

Regards Hans

[ajg141]

Absolutely fascinating Ernie. I am really looking forward to seeing this one run.

Andrew

[Ernie Lazenby]

I have got a lot more done in the last couple of days. Almost completed the mechanism for driving the 'paddlewheel'

 5:1 geared motor fitted with an aluminium toothed pinion (12 teeth) driving through a heavy duty toothed belt to an aluminium pulley (24 teeth)  shown in the following photographs. 

 I have designed a system that allows me to remove the entire wheel complete with bearings and all from the boat without a major strip down. (4 bolts)

[Ernie Lazenby]

another view