T-Pain Is On A Boat: Re: [Electric Boats] Repowering Macgregor 26x

Monday, June 15, 2009

Re: [Electric Boats] Repowering Macgregor 26x

Well to answer the original question. To replace a 70hp gas with
electric at the same top speed you would need something like this:

http://www.evcomponents.com/ProductDetails.asp?ProductCode=AC55

About $3500 for a 79HP motor. Petty good so far!
The 312v battery pack for 1 hour of all out max speed (using 250A)
would be:
Using LifePo4 260AH 312v pack (98 cells) at $286 each = $28,028 USD
Ouch!
Total weight for batteries 882 kg or 1,943 us pounds.

So about 30,000 USD for one hour at max power. You can save tons of
money just by limiting the time you want max power.

A better option to get the advantages of electric where it is most
efficient low speeds! and still plane would be the Steyr Hybrid:

http://www.steyr-motors.com/products/pdf/hybrid.pdf Plus only
needing a 48v pack 15 cells at $286 = $4290 USD

Hope this was more helpful then the It can't be done answer! I don't
know if 882 kg will sink your boat, Most likely it would not! Might
sink your wallet!
A 100AH pack (Giving you about 25 minutes at top speed) would cost
$10,780 USD and weigh 313 kg 690 pounds.

It might be better to ask what horse power do you need to plane? And
work the numbers from there.

On Jun 15, 2009, at 2:02 AM, Arby bernt wrote:

>
>
> It isn't going to happen on plane. Your battery pack would sink the
> boat, even with the water ballast tank empty. The ParSun electric
> outboard would give you good range, but in displacement mode only.
> If you need the speed, one gallon of gas is 800lbs of battery...
> Arby
>
> ________________________________
> From: Glenn <devinetemptations@aussieisp.net.au>
> To: electricboats@yahoogroups.com
> Sent: Thursday, June 11, 2009 5:01:06 AM
> Subject: [Electric Boats] Repowering Macgregor 26x
>
> From how I understand it if I want to convert our Macgregor 26X from
> using a 40-70hp 2stroke to electric and still have good performance
> on the water the best option for us is to go diesel generator and
> high performance electric motor.
>
> We prefer to raise the sails as much as possible, the outboard is
> for getting there, anyone who has ever been on the Myall river in
> NSW, Australia will know what I mean when I say one slow trip on
> that river is enough.
>
> What would it take to get a Macgregor 26X to plane it's hull and for
> how long on battery/electric only.
>
> Glenn
>
> [Non-text portions of this message have been removed]
>
>
>

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