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Go Back   SailNet Community > General Interest Forums > Gear & Maintenance > Engines > Electric/Hybrid
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  #41  
Old 02-18-2014
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Re: Repowering with an electric engine?

there is a ct41 that has been repowered to electric only...uses a beautiful big lithium ion battery bank...his declared price he paid was in excess of 30000usd. yes more than thirty thousand us dollars. he can motor at 7 kts, down hill, and 1.8 kts uphill.
there was seen in barra de navidad a 34ish ft sloop with torqueedo power.. they used torqueedo t1003s to propel their boat then used the removable motor to propel their dink. they loved it. their cost was under 2000usdollars.
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  #42  
Old 02-18-2014
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Re: Repowering with an electric engine?

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Originally Posted by CaptainRahnn View Post
A member of our club just bought 2- 240 watt panels for $1000. I figure 4 of those is 960watts. Really not that much space used.

Four 240W panels are roughly 13' X 5.5' of space or 5.5' X 3.3' each...... That is a lot on a 35' vessel to keep not shaded & out of the way for sailing.....
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  #43  
Old 02-19-2014
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Re: Repowering with an electric engine?

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Originally Posted by zeehag View Post
there was seen in barra de navidad a 34ish ft sloop with torqueedo power.. they used torqueedo t1003s to propel their boat then used the removable motor to propel their dink. they loved it. their cost was under 2000usdollars.
I will be doing the same with my SeaSprite 23. Same motor. if you get their optional solar cell "blanket" you can run indefinitely at half power as long as the sun is shining
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Old 02-19-2014
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Re: Repowering with an electric engine?

the problem with the solar cell chaging part is the connectors..mine no longer function, yet the plug in for 120 works fine... someone had to rewire their solar charger for it and that made it work..i still need that done.
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  #45  
Old 02-19-2014
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Re: Repowering with an electric engine?

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Originally Posted by P35juniper View Post
It would be a bit of a pain but if you had 7 panels up each rail and 3-4 across the back, that would be 1700-1800 watts, about 6 hours best, Just have tofigure an easy way of setting/ removing/ storing them.
Well the 7 that are away from the sun will provide no power, so you would have only half the capacity there. They need direct sun to produce enough power to charge batteries.
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Old 02-19-2014
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Re: Repowering with an electric engine?

Wooden boat magazine did a spread last year about an antique launch that they converted to hybrid.
The electric motor was the only one that would fit without changing the boat. They found someplace else to put the generator.

Some catamarans do the same thing so they only need one big generator rather than two diesels and a generator.

The advantage of the hybrid is you can design in whatever range and power you want by changing the size of the components and still have the cool factor of silent running and torque control of an electric motor.

It is guaranteed to cost more as the engine and generator cancel each other out but you still need to buy extra batteries and electric motors and lots of control stuff.

For a premium setup it would be really cool and have the benefit of having lots of extra power available as long as the generator was not needed for propulsion.
Hair drier, microwave, washer and dryer etc.

But most of these threads the OP included are looking for something cheaper than diesel replacement and usually on a smaller boat.

So no.
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Old 02-21-2014
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Re: Repowering with an electric engine?

Motor sailers are a poor compromise - they are very average sail boats and even less than average power boats.

IMHO, a hybird power plant is the motor sailer of engines.
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Re: Repowering with an electric engine?

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Originally Posted by Omatako View Post
Motor sailers are a poor compromise - they are very average sail boats and even less than average power boats.

IMHO, a hybird power plant is the motor sailer of engines.
An argument could be made that instead that the hybrid power plant could actually, if designed properly, deliver on the advantages of of both electric and ICE while mostly eliminating the disadvantages.

Most reports give very high marks to electric drive for, torque, control and sound. In fact just about all the advantages are on the side of electric for propulsion with one exception.
That exception is that power storage in the form or batteries is insufficient.
If you add an Internal Combustion Engine ICE generator that has enough power to drive the motor at whatever percent you feel necessary then you have the range of diesel plus the torque and control of electric.

Along with this design you get some nice added features:
1. The diesel generator can be run at the optimum rpm for maximum life and fuel efficiency. No more idling glazing or running a 80 HP engine to produce 40 HP for days at at time.
2. The engine can be located in the ideal location for weight location and sound control.
3. If the boat is sailing or running off the batteries and you turn on the generator you have a lot of power to run accessories like a dryer, scuba compressor or any other power hungry device you can now have.

But while feasible and super cool if setup right it will not be cheap and probably makes the most sense for a bigger boat especially a larger catamarans where it can even be cost effective for reasons mentioned above.
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Old 02-21-2014
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Re: Repowering with an electric engine?

If the boat is big enough, say 60' or larger, a hybrid could make sense. But not for all the reasons you mention. The best location for weight is above the keel. Not everyone likes an engine or generator there, particularly in a smaller boat. The ideal location for sound is aft away from the main living area. And as you have said it is expensive compared to a standard engine installation.
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Old 02-21-2014
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Re: Repowering with an electric engine?

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Originally Posted by mitiempo View Post
If the boat is big enough, say 60' or larger, a hybrid could make sense. But not for all the reasons you mention. The best location for weight is above the keel. Not everyone likes an engine or generator there, particularly in a smaller boat. The ideal location for sound is aft away from the main living area. And as you have said it is expensive compared to a standard engine installation.
How many people go out on a boat to save money ?
It is an engineering problem with limitations. Someone will solve it.
I like the way you pull at and pick and expose the problems with battery, solar and hybrid power. A problem needs to be pulled apart in order to understand it.
Kind Regards, Lou
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