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i just want to revisit the voltage for a minute here, everyone is running 48VDC correct? The motor companies and a few writeups outline 96vdc and the power looks much more promising. But i don't

Thanks everyone! Dan, those charts from the curtis dyno are fantastic. Thanks! I can see how they align with your systems rpms. Do you have links to the site with that data? Is it from Curtis direct?

The use of a 7/8” keyed shaft for an electric drive predates ME1616 by decades. Several of the currently available motors not only spec’d that shaft size/style but also mounting hole pattern

Yeah, and these weak links end up failing at the worst possible time---e.g. shear pins. I’ve blown the shear pin on my outboard many times just as I was panicking about backing into a dock or

Another point about the belt drive. I wouldn't over-build that to make it too strong. It is the weak point in the drive train and if the prop became tangled or hit something the belt would probably

" That's the first I've heard of props being most efficient around 1000RPM." It's not that there's some peak efficiency at that RPM.? It's just that lower is better for RPM when it comes to prop

It is well-established that a large prop turning at low rpm is the most efficient way to go for displacement type hulls. Many ICE setups have props turning at higher speeds but that is to do with how

At 5.5 knots motor RPM is about 1800. Reduction is 3:1 so prop is at 600. I designed my system to get the motor into a good efficiency range at my operational speeds based on the motor data from

That's the first I've heard of props being most efficient around 1000RPM.? Are there references for that? On my trawler, I have a 1.25 : 1? gear ratio in the transmission.? ?My engine guru tells

While running the motor in its efficient band is important, possibly even more important is to keep the shaft (prop) speed below about 1000 RPM as that is where props are most efficient and it's the

Reuben, Assuming your setup is in a catamaran: How long and how heavy is your boat? and how fast do you spin your motors? do you have a reduction setup or are they direct coupled? (the silence of

The really enticing thing is: The current hydraulic motors here, they have 7/8" SAE(B) keyed output shafts going down into the saildrives. Just like the ME1616.

Dan do you know what speed your motor is spinning at for the 3kW at 5.5kts? I saw your gear reduction unit and I am trying to decide if i need to build that as well. To get the rotor rpms up where

Thanks very much everyone! And thank you Dan I read through all of your great writeups on the install. I appreciate that well traveled kW data about 5.5kts 3kW 62Amps. Really nice blog on the

I am in the San Francisco Bay

I have a pair of ME1302s - 10kW/48v. Top RPM is 2,400. I run at much slower speeds never reaching the max. Watch the temperature at speeds clisr to max.

I have an ME1616 in my 10 meter sailboat (6.5 tons). It is the motor in the Thunderstruck 12kW liquid cooled sailboat

Where are you located Charlie ?

Anyone with ME1616 experience? I am planning to run one at 48VDC, what is the actual kW available? I tend to believe only the most conservative numbers, so I saw a post in EV Europe listing it as

hi all, over the past years i've been reading up on the conversion of my small canal-boat in Amsterdam. i recently bought a second hand kit, not sure if it all supposed to work (together). i do have