T-Pain Is On A Boat: Re: [Electric Boats] Re: Propane outboard engine

Tuesday, February 21, 2012

Re: [Electric Boats] Re: Propane outboard engine

24ft long.. square root length times 1.56 for 7.64 mph potential hull speed..

but that "needle" looks like a length-width ratio of 10-12:1 on top of that.

its hard to see it, but it looks wider in the back similar to a freighter canoe.

http://www.robbwhite.com/sportboat.html kinda describes the effect maybe,

where the planing speed is lower than its hull speed, so theres no "hump"

when making the transition from displacement to planing. Robb's claim is

the boat can plane 2 people with 3hp pretty easily, may be whats going on.

covering 72 miles in 6 hours is 12mph, thats really movin on 1hp!

I think this guy is onto something as a hull-form, http://forum.woodenboat.com/showthread.php?126369-New-two-sheeter-Square-stern-motor-canoe&highlight= further down the thread he's describing it from 5x10 sheets,

"The specifications for the two 5'x10' sheet motor canoe are:

LOA 18' 7"
Beam 4' 0"
L@WL 18' 3"
B@WL 3' 4"
Displacement 800lbs
Draft 4"
Depth amidship 16" "

-I'm imagining it from 5x12 sheets and 22-1/4 ft long (what a canoe that'd be!)
-or from 6x12 as an "ultimate freighter canoe" ? cuddy cabin ?

--- On Tue, 2/21/12, Kirk McLoren <kirkmcloren@yahoo.com> wrote:

From: Kirk McLoren <kirkmcloren@yahoo.com>
Subject: Re: [Electric Boats] Re: Propane outboard engine
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Date: Tuesday, February 21, 2012, 3:09 AM

John do you have more on the utility - is it hull boat mass or the
>>> > dring
>>> > style that makes it work so well?
hull design

needle

very low drag

Nemo dat quod non habet

From: John Paramore <watertoyz@frontier.com>
To: electricboats@yahoogroups.com
Sent: Monday, February 20, 2012 11:15 PM
Subject: Re: [Electric Boats] Re: Propane outboard engine

Ummmmmm...What?

On Feb 20, 2012, at 8:57 PM, Kirk McLoren wrote:

> needle boat - very low drag
>
>
> Nemo dat quod non habet
>
>> From: John Paramore <watertoyz@frontier.com>
>> To: electricboats@yahoogroups.com
>> Sent: Monday, February 20, 2012 8:42 PM
>> Subject: Re: [Electric Boats] Re: Propane outboard engine
>>
>>
>> I've had to think about that one..."The Utility" was Snohomish County
>> Public Utility No. 1, the electric utility I retired from about 20
>> years ago. if you were asking about the marathon boat's though, I
>> thought I'd placed pictures in the photo's section, but apparently
>> not .
>>
>> So I've attached a picture of what i thought was the best entry. It
>> finished second in both the first and second marathon, mostly due to
>> getting outfoxed by the winner, but it was a nifty design by Yacht
>> designer Tim Nolan that was at home on lakes and in the open waters
>> of puget sound.
>>
>> The hull's a 24 foot "tortured mahogany slipper powered by 2 car
>> batteries. Initially the team set speed through switching but the
>> following year they switched to a curtis controller. The motor's a 1
>> hp Bosch in an inboard configuration pulling a huge slow-turning 3-
>> blade prop. In its first competition it ran 72 miles in 12 hours. A
>> year later it ran the same distance in 6 hours. It's certainly longer
>> and slicker than a dinghy, but I think what the layout and design of
>> a dinghy loses to it can be nearly made up with through battery tech.
>>
>> John
>>
>>>
>>> On Feb 17, 2012, at 2:51 PM, Andrew Gilchrist wrote:
>>>
>>> > John do you have more on the utility - is it hull boat mass or the
>>> > dring
>>> > style that makes it work so well?
>>