Boat Journal

Chronicling a love affair with sailing

Tag: electric engine

Installing the Electric Engine

Of all the tasks I’ve had to do on the boat this spring/summer, installing the engine has got to have been the most straightforward – and the most nerve wracking!

Three things worry me when I do repairs or put something new on: one is that I’ll do it wrong and have to do it over again; two: that I’ll mess it up badly enough that the boat will sink; and three, that the next owner of the boat will look at what I’ve done, shake their heads and say, “What was she thinking?”

I guess the last one shouldn’t bother me that much. But I was office mate to a guy buying his first sailboat. He’d done quite a bit of research, and he was pretty handy in his own right. So he would regale me with tales of poorly done installations and repairs on the boats that he looked at as he search for something he’d want to own. And I guess I don’t want to be ‘that’ person.

So, installing the engine became almost the last thing I’m doing before I put the boat back in the water. I don’t want to sink the boat. I don’t want to get it done, find it’s wrong and have to do it all over again. And I don’t want the next owner to look at what I installed and feel the first thing they’ll have to do is redo what I’ve done.

But, although time consuming because of my own limitations, installing the engine has proved to be very easy. The Electric Yacht folks have built something that is easy to work with and provided detailed enough instructions to quell many of my fears. On top of that, Scott McMillan, the owner of the company, has quickly answered my numerous emails asking for clarifications or more information.

I must admit, I didn’t do things quite in the order suggested. The instructions say to put the batteries in place first, then put the engine in. But I was laying the batteries in the engine compartment in such a way as to make them easy to access, which meant getting the engine placed first, to make sure that everything would fit.

New house battery locationFirst thing, I moved the house batteries. Those are smaller and shorter than the 4 AGM batteries I was installing. So it was easier to put two of the AGMs where the house batteries were, and move the house batteries to a locker beside the engine compartment. So, I cut a piece of oak large enough for each battery, and treated 2×4 to help make the surface level. I covered each piece of wood with West Systems (where would the modern day sailor be without it?), fiberglassed the 2×4 in place, and screwed the oak shelf onto the 2×4. I left the other side free, since I didn’t want to put holes in the bottom of the boat. We rewired the house batteries in their new location and moved onto the engine batteries.

I planned on putting two of the engine batteries where the two house batteries had been. One of the remaining engine batteries would go on the aft end of one of the mounting rails, with another 2×4 support attached to the side of the engine compartment. The last battery would go between the rails, raised slightly with some oak supports to ensure that I wasn’t blocking anything from flowing into the bilge.

First, however, I put the engine in place. The engine is much narrower than a diesel or gas engine. So mounting feet are provided to hold it in place. Spacers are included, in case the distance to traverse is longer than the feet will alow. In my case, the spacers were a necessity. I assembled the feet as instructed and slid everything onto the rails.

Electric Yacht CouplerThe coupler provided by the company is much easier to use than the one normally used. No feeler gauge necessary!  The coupler is a 4″ sleeve that goes over the shaft from the prop and the shaft from the engine. The bottom half is a solid piece, with a slot for the key. The top is two halves: one to fit over the prop shaft and one to fit over the engine shaft. When alignment is right, the two halves bolt easily in place.

We aligned the engine, using a mirror underneath the shaft to confirm placement. We then checked the spacing of engine in terms of where I wanted to place the two unseated batteries. Everything looked like it would work. So we pulled the engine out again.

I cut two more platforms out of oat for the last two batteries. Like the house batteries, I put plastic battery holders in place to keep them from shifting. Note on those plastic holderes: those things are tough! Moving 100 lbs isnt easy. So when I put one holder under a battery to see if it fit right, I should have crushed the thing with my handling. But not a tear appeared on it. That made me feel alot more confident about my choice to use them.

More West Systems epoxy on these platforms, the 2×4 support for the ‘upper’ battery, and for the two thinner oak supports for the ‘lower’ battery. I also used West Systems and fiberglass matting to hold the oak supports in place, again so I wouldn’t have to screw anything into the bottom of the boat.

While the engine was out, and before I put the last two batteries in, I also installed the charger, since it would be on the wall of the engine compartment, forward of the ‘upper’ battery, and beside the engine. I also installed the battery cutoff switch, the fuse and the relay required by the engine.

Once all this was in place, I reinstalled the engine. I didn’t connect it with the couple yet. I want to test it out once we have it all wired up, and I don’t want to ruin my new cutless bearing when we do. I then put other two batteries in place. Tomorrow, we wire everything up.

Engine in place

Long Time to the Simple Solution

I’ve finally reached the point when I can start working on the pieces leading up to the installation of the new electric engine. First stop in that regard is getting the 4 – 100# AGM batteries in place. These are taller (12″ vs 10″) and longer (13″ vs 8″ or 12″) than ‘conventional’ marine deep cycle wet cells. I wracked my brain, and those of several friends, to try to figure out a way to put the batteries forward in the engine compartment, making them easier to install and deal with. But every configuration we came up with left us short on space; we couldn’t find a way to fit all 4 without reconfiguring the stairs down into my cabin. And, as long as this years project has taken (2 months out of the water as of yesterday), I really didn’t want to add another carpentry project to the list.

So yesterday afternoon and this morning, I spent making cardboard cutouts to confirm the battery placement, before I started cutting wood. This afternoon, however, I had an ‘ah hah!’ moment.

Why not move the house batteries, leaving enough room for the engine AGMs right where we wanted to put them?

So I started looking at the lockers on each side of the engine compartment. They could easily hold the house batteries. I could then put two of the engine batteries where the house batteries were, put one battery ‘under’ the engine platform, forward of where the engine would sit. That would leave one battery that I hoped to put over the bilge. But, again, I ran into a height problem. So it will go on the port side, behind the engine and on top of the porside engine rails.

After all that planning and figuring, I was only able to get one house battery moved today. Tomorrow, I hope to get the second replaced. By the end of week, I’ll try to post pictures with the new configuration.

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Electric Engine

Those who have monitored this site have seen the enginer problems I’ve dealt with. The Westebeke 18W that was in the boat when I purchased it 3 years ago, like an old man, was cranky and hard to get along with as winter moved to spring. Last year, rather than just being cranky, it just wouldn’t start.

The surveyor I employed when I was purchasing the boat had been familiar with it. We also had questions, since the boat came with both an inboard and an outboard (a sailboat needs 3 forms of propulsion?), so I’d had the engine surveyed separately. The person I found to look it over had actually seen that engine in an earlier incarnation. He remarked that it was near death last time he’d seen it, but that someone had taken the time to bring it back to life, and done a good job of it!

In summer, it ran like a charm. In winter, it gave me problems. Finally, last year, the only shop I could find that would even look at it required I bring the engine to them. So I did. They said there was water damage inside.  The price they then quoted me to rebuild was going to be more than another used engine would run me – I think the quote was something like $7K. So I said thank you but not thanks and sold it for parts to someone for about $200.

I got back the outboard from the person I’d sold it to. He hadn’t been able to use it because it was too big for his boat. So it had sat on a stand for 2 years.

I had the outboard cleaned out and tuned up. It ran ok – with the choke on. Found out it had air leaks that the mechanic couldn’t trace down. Not only that, one blustery race day, the outboard couldn’t even get me out of the marina. I ended up tying off at another dock and coming and moving my boat back into its slip the next morning, after the wind died down.

ARGHHH! Sailboats! All I needed was something to get me out of the marina. Why did it have to be so difficult?

Being the proud owner of a Prius, I had been intrigued by what I’d been hearing regarding electric engines for boats. I started lurking around the electricboats mailing list, and checked out the vendors at the Annapolis Boat show last fall. After conversations with the Electric Yachts folks, I settled on the 180ibl they made. My boat size/weight is actually at the cusp between their smaller engine and this midsized version. But my fear of being underpowered after my fiasco mentioned above led me to go with the larger model.

The engine is ordered, as are the 150AH AGM batteries. I’ll place the order for the Dual Pro charger this weekend. The prop will need to be reinstalled, since I had it removed and the shaft plugged when I decided to use the outboard. I’ll try to keep the information on the conversion up to date as I go.

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