A 3hp motor will most likely "push" your McGregor 19. You won't go real fast - but it would certainly get you in and out of the marina. And could also be used to motorsail as I described below.
Depending on the range you were looking for - the batteries probably won't be a HUGE problem either. Yes, it's extra weight, but you'll have it down low. And it probably won't be more than a couple hundred pounds - even if you're doing a 48V bank. A *heavy* 12V AGM battery is still only 50 pounds, so 4 of them would be about the size of a "healthy" guy laying in the bottom of your boat.
One thing you would probably want to play with is changing the prop on the motor to get something that had a much higher pitch than the gas outboard used.
John
From: "Mark F mark.internet@yahoo.ca [electricboats]" <electricboats@yahoogroups.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Tuesday, June 9, 2015 12:17 AM
Subject: Re: [Electric Boats] 19 ft MacGregor electric?
The boat I am looking at has a 50Hp 2 stroke motor outboard.
I have a 20 Hp long shaft motor that I would convert to electric.
I would probably use a 3hp golf cart motor.
Just interested to see if anyone has converted a MacGregor.
It uses water ballast and wondered how it would handle with the extra weight of the batteries.
Mark
From: "oak oak_box@yahoo.com [electricboats]" <electricboats@yahoogroups.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Monday, June 8, 2015 7:22 PM
Subject: Re: [Electric Boats] 19 ft MacGregor electric?
Mark,
Can you elaborate a little bit on your thoughts for the conversion?
Were you thinking about removing the rig entirely? Were you thinking about radically changing the cabin? Were you thinking about an outboard, or somehow installing an inboard? For outboards, were you thinking a commercial electric outboard, or would you do an electric conversion of a gas outboard?
An interesting experiment for your 19' might even be to try a 24V trolling motor. I'd really like to try adapting a Torqeedo prop to a 24V trolling motor and see how THAT combination would perform!
I have a Catalina 22 that I have mounted a 48V Torqeedo on. I'm not sure if that counts as an "electric conversion" or not - but I've had a lot of fun playing with it.
This past weekend, I did some motor-sailing. I had only a genoa up, in moderate wind. With no electric power, I was sailing at about 2.5mph. With very little extra electric power, I was able to increase the speed by 1 mph. At about 500-600W, I was doing about 4+mph. This same speed could be achieved by power alone with about 1000+W on the Torqeedo, or if I raised both main and genoa, and had a bit more wind.
Bottom line - adding an electric outboard to your existing sailboat gives you lots of options. You can sail, you can motor, or you can use both to increase your sailing speed at low enough power to extend your battery life TREMENDOUSLY. The other nice thing about motorsailing is that it eliminates "iffy" tacks, and can help push you though lulls. The lake I'm on is really just a wide spot on a river (Lake Travis, in Austin, Texas. Due to the "ground effects" of wind going through the canyons, around hills, etc - sailing on Lake Travis can get really flaky in spots. Being able to reach back and add a touch more electric to push through a lull is a WONDERFUL thing to be able to do!! And you wouldn't do that with a GAS motor - you wouldn't drop and start an outboard just for a little extra boost. And you wouldn't want to listen to it the whole way for motor sailing.
John
From: "Mark F mark.internet@yahoo.ca [electricboats]" <electricboats@yahoogroups.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Monday, June 8, 2015 3:12 PM
Subject: [Electric Boats] 19 ft MacGregor electric?
Has anyone converted a 19ft MacGregor to electric.
Would it be a good choice?
Any info appreciated
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Posted by: oak <oak_box@yahoo.com>
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