T-Pain Is On A Boat: Re: [Electric Boats] Greetings! New conversion

Monday, October 21, 2019

Re: [Electric Boats] Greetings! New conversion

Thank you very much. I have done a lot of the research but your info fills in a few of the gaps.

We are looking at similar except x2 obviously for the cat. What are you thinking for a house/engine battery bank?

I'm looking at a diesel genset for long hauls. We are also planning on switching to electric range top and oven as well. I like the idea of the electric motor on the dingy.

When are you planning on starting your project?

Thanks again for your insights

Steve

Sent from my iPhone

On Oct 20, 2019, at 8:24 AM, Frank Schultealbert frank@schultealbert.com [electricboats] <electricboats@yahoogroups.com> wrote:

Hello Steve,

We are in a very similar situation. Our boat is a Moody 425 (Monohull,
10to, 12,70 meter) which we want to convert.

Contacted Oceanvolt and got an indicative offer which nearly put us off
the project.

After watching Kika & Dan from Sailing Uma we have decided to go ahead
and our plans so far look like:

a 12kw 48 Volt DC Motor along the lines of the
https://www.thunderstruck-ev.com/electric-sailboat-kits-and-accessories-inboard-motor-ev/

48 Volt LiFePo4 Battery, build from single cells
https://evea-kartmasters.fr/en/lithium-cells/2130-gbs-32v-160ah-lifemnpo4-lithium-cell.html

a solar array of 800 - 1000 WP (maybe more)

a 4kva AC Genset (which was already installed by the PO)

The first step is to learn and decide what speed you want to be able to
do using your motor. If you reduce to 95% hull speed your motor needs
drop to 70%.

https://www.fischerpanda.de/calculating-the-performance-requirement-of-a-de-propulsion-unit-for-displacement-yachts.htm

And after that you need to figure out your range requirement, or if you
want to use a genset as range extender the size of the genset.

Further thoughts go to replacing the gas cooker with an induction stove
as the engine battery serves as a really big house bank when at
anchor....... and the tender already has a epropulsion outboard. No more
gas and no more outboard fuel reduce our ressources needed to diesel for
the genset if at all. With more solar and our windgen we may already not
need the genset. We will keep the diesel tank for heating purposes........

And most important for us: improve our sailing skills. The more you sail
the less you need a motor......

Rgds

Frank