The Flying Mogrys is now an electric Vessel!

and nearly nothing to hear.

Final update for converting the engine to electric.


Our crane date and expected completion should be March 29th, 2022.

Unfortunately, the propeller had not been delivered and I received

a cancellation shortly before this date. The vacation was



I didn't get another vacation for the next crane appointment, so

the shipyard let our Mogrys into the water alone. Unfortunately,

the electrics were still not finished and the completion date kept

getting pushed back.


A joint test drive should follow on May 6th, 2022. Unfortunately

I didn't get any vacation again and the shipyard did it alone.

It was determined that the active water cooling pump was running

too loudly. This was immediately complained to the manufacturer

and should again mean a delay. Furthermore, one noticed that the

pump ran continuously as soon as the battery switch was flipped...


But we were allowed to do a test drive ourselves on May 8th, 2022

and drove early in the direction of Kiel. Appropriately in our eGolf,

of course :)


After we first had to look for our Mogrys, we made everything ready


for sea and started the engine for the first time.


After setting up the battery monitor on my cell phone, it started.


We drove north on the Kieler Förde in the best weather. The sails

were not used and we tried all load positions and looked eagerly at

the remaining run time and the power consumption.


At 2000 watts against the wind and current we reached 3.6 - 3.8 knots.

On the way back with wind and current it went to 4.0 - 4.5 knots. I will

find out the remaining running time, but the first measurements brought

about 8 hours driving time...


Power consumption 5000 watts our Mogrys went to 5.9 knots and at

11000 watts to 7.4 knots and the bow came out of the water and the

cockpit filled with water from the bilge hole in the floor...

All speeds are of course above ground from the plotter and not

through the water.


After docking, however, it was clear... It was the right decision

not to use diesel anymore.


You can find out more about the progress in my next blog.

Veröffentlicht am 16.05.2022 11:38 Uhr. 0 KommentareKommentar abgeben

The Mogrys will be back in the Water soon!

A small update about the Motor replace.

We've been busy with the underwater hull for the last few weekends. 

There are now 5 layers of Gelshield 200 on it and that should last for the next few years. Unfortunately we had to find out that the keel needs a restoration next time and scraping off about 20 layers of antifouling wasn't fun either....

After we kept scraping the keel, a crater landscape came to the fore......

Then there was the problem of timing. We got a crane appointment on March 29th, 2022 and we had planned for mid-April...

But the shipyard gave the OK and by then the new Vetus E-Line 10kW should be installed and functional. So from now on it was grinding and painting at 5 degrees...

Of course, the shipyard was not completely idle either and installed a new shaft and the motor... If you want to know how big the LiFePo4 batteries are, you should take a look at the consumer battery... the big black boxes are the new batteries ;)

Yes, I have to clean up again, but I can't work with water in the cockpit at the moment because the inspection hatch hasn't been closed yet and I don't want to destroy the new engine right away.

The underwater hull now has the new antifouling and the shipyard still has to install the water cooling and the batteries. A Bluetooth battery monitor is installed to monitor the discharge and remaining time.

Saturday the waterless will be repaired and the saison can be begin :)

Veröffentlicht am 23.03.2022 18:54 Uhr. 0 KommentareKommentar abgeben

Battery System

48 Volt LiFePo4

So we have now ordered the battery packs and the charger.

I was looking for lithium batteries that are as small as possible and also have little weight.

The default was at least 4 hours of operation at 4.5 knots. Yes, I am aware that this depends on many other factors ... (current, wind and waves)

So we started looking and it was very difficult ... In Germany there were only standard batteries or AGM batteries. With AGM we had to make do with significantly reduced charging cycles with a discharge of 80%. Most manufacturers then only specify 300 - 400 charging cycles, but the price would then have been half the current price.
The LiFePo4 battery is specified with 2000 - 3000 charging cycles and has an internal battery management system. This prevents deep discharge and overcharging. Yes, LiFePo4 lose a little capacity over time, but that is negligible given the size we have chosen.

When we are in a port, we have time to charge and have therefore opted for a 1168 watt 48 volt charger.

Why didn't we choose a bigger one? Very easily.....

We orientated ourselves on other experience reports and they report that the safety device on the jetty was often triggered because the cables and the large number of boats on the jetty were not designed for this. Furthermore, a slower charge is better for the batteries.

We will no longer use a 12 volt battery for the internal power grid, so a 48 volt to 12 volt power converter will be used in the future.

If you have any questions, feel free to write to me. Via the contact form on this page.

The next update will follow shortly ...

Veröffentlicht am 22.12.2021 6:45 Uhr. 0 KommentareKommentar abgeben

The diesel is out and the renovation in the shipyard begins

System and other considerations

After we took the last sail and the last upholstery off board, we were happy to see that the engine was already out and that the screw had already been dismantled.

Up to this point we had not yet had an offer from the shipyard.

After almost 2 months it finally started ...
In the future, a Vetus e-Line 10kW electric motor will be up to speed here. This is comparable to an 18 HP diesel engine and is slightly larger than required.

The Vetus has active water cooling and I just had the better feeling with this motor ... Yes, there are many other electric motors and some of them are much cheaper ...

Unfortunately, it's not just the engine that needs to be replaced, but also the shaft and propeller. The motor must now be adjusted to the height of the shaft and the biggest problem will be the batteries.

In the meantime, I had other opinions on the subject of batteries and they are very different ... I also believe that these opinions are always designed only for my own well-being and yes if I take AGM batteries, I pay about half but have more than twice the weight.

The offer for the conversion came 2 days later and my calculated costs were once again beyond the scope ...

But every time I drive past a gas station, I lie to myself and say to myself: "The decision on diesel prices and the maintenance effort of the diesel justify the additional costs!"

More information will follow ...

Veröffentlicht am 17.12.2021 9:12 Uhr. 0 KommentareKommentar abgeben

Conversion of our Mogrys to electric motor

Why we decided against a new diesel.

The prognosis was bad for our engine. First only the cylinder head gasket, then the heat exchanger and the death knell was the heat exchanger housing. This alone should cost around 1900 euros. Even the shipyard wrote to us that we should think about a new engine .... Of course, that meant a new diesel. I asked for a quote for the total cost.

Of course, we also looked at what a new Nanni Diesel with around 15 hp would cost and the shipyard had already given us an approximate budget. Our model Nanni Diesel 2.60HE was of course no longer available and of course we also thought about a new used boat .....

Everyone who knows me knows that I not only drive a Volkswagen eGolf, but that I am fond of new technologies. Where we bought the boat, I had announced to our boat broker that if there were major repairs, the engine would be exchanged for something electric. He then asked to inform him.

Am I particularly aware of the environment or why should it be an electric motor now?

The environmental thought was there, but rather in the background. The main reason is that I hated it in winter storage to always have to change the oil for 5 - 10 engine hours and to replace the impeller for safety reasons. Always winterize the engine and then remove the mess again. Diesel is getting more and more expensive and if the new government cuts the subsidies for diesel and a liter becomes even more expensive then the cost of a diesel engine will increase every year. For the last few years we have been lying in the buoy field in Eckernförde and have only refueled the expensive Ultimate Diesel. The last diesel plague was removed 4 years ago. In winter we always added diesel to the tank to counteract this plague ... Yes, even the expensive diesel now has bio additive. The tank was filled with 5 liter canisters and everyone knows that a drop goes wrong ...

The effort was simply not in proportion to the benefit. We are not the mega sailors, but we enjoy it when the engine is not running.

Furthermore, I didn't want to invest in a technology that has existed for 130 years and is slowly no longer really in demand in the car sector ... How do I know? I've been a car salesman for over 20 years.

What should our new system look like and what range do we expect?

It is a Vetus e-Line 10kW motor. This is operated with 48 volts. There are 2x LiFePO batteries of 200 Ah 48 volts. Because the batteries can be completely discharged, we come to approx. 20 kW / h. Furthermore, we will have a small gasoline generator with 2 kW charging power as a range extender on board.

Depending on the speed, the pure range should be approx. 4 -5 hours or a range of approx. 20 SM at 4.5 Ktn.

But as I know from the experience of my eGolf, it depends on many factors. (Current, wind, wave, temperature and much more.)

We do have a solar cell on board, but it is only supposed to recharge the consumer battery. We don't have a wind generator, but we have sails :)

The weight of the engine / gearbox / tank is removed. For this, the motor comes with its own water cooling (approx. 71 KG) and 2x rechargeable batteries a 75 KG.

In addition there are connection material and charger.

In the next blog entry we will write about the shipyard's offer and everything else ... If you have any questions, just write to me using the contact form or WhatsApp.

Yes, we have a sailing boat and our moogle sails beautifully :)

Veröffentlicht am 17.12.2021 8:50 Uhr. 0 KommentareKommentar abgeben

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