T-Pain Is On A Boat: Re: [Electric Boats] "Batteries Not Included"

Friday, May 24, 2013

Re: [Electric Boats] "Batteries Not Included"

Hi Matt

Only disappointing if you let it be so, how about James locates an identical boat(without hull mod of course) somewhere, and do a

comparative drag test ?

Geo

-----Original Message-----
From: matt elder <mattelderca@yahoo.ca>
To: electricboats <electricboats@yahoogroups.com>
Sent: Fri, May 24, 2013 7:44 am
Subject: Re: [Electric Boats] "Batteries Not Included"

Now that's disappointing.
I would have wanted to get drag measurements after removing the out drive but before hull mods.
Even just towing the hull with some ballast in place would be enough. Then you could verify your work with before and after figures. It would have been useful in figuring out if all that work was actually worth it. For the amount of work and cost involved, I would have just left the drive and repowered electrically. That's just me, I use cost as a major plan adjustment.
I hope you will put more thought into gathering data for the other plans you have. You will need this to prove them!

mattelderca

From: james4078 <james4078@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Friday, May 24, 2013 2:34:54 AM
Subject: Re: [Electric Boats] "Batteries Not Included"

Hey guys I have to admit I did not take any drag measurements before removing the I.C.E.
Changing the hull design was more of a logical call than data related.
Displacement hulls do use less energy to move through the water than a planing hull.
The addition to the stern was calculated using the current overall measurements.... The width of the stern and length of the V at the bow
both come into play when adding another V to the stern.

--- In electricboats@yahoogroups.com, matt elder <mattelderca@...> wrote:
>
> This is an excellent question. I sure hope that he is taking extensive measurements. I sure would like to see the results. Using cheap old cruisers would be cool.
>
>
> mattelderca
>
>
> >________________________________
> > From: luv2bsailin <luv2bsailin@...>
> >To: electricboats@yahoogroups.com
> >Sent: Thursday, May 23, 2013 4:33:10 PM
> >Subject: Re: [Electric Boats] "Batteries Not Included"
> >
> >
> >
> >
> >This thread has been a great example of how thoughtful and civilized folks can have a conversation on some touchy topics without the "traditional" mud-slinging so common on the forums. Kudos to all.
> >James, have you collected any drag data on the boat before and after the "duck tail" was added? I too have been wondering about the feasibility of recycling old power cruisers and what what it would take to improve efficiency at displacement speeds. There are thousands of them out there across the US and many can be had for next to nothing.
> >Jim
> >
> >
> >
> >
> >
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