Re: [electricboats] Trolling Motor Propellers

Bill, I had 16 100 watt noncrystalline 12v solar panels mounted on an aluminum frame on top of my pontoon.

These panels were configured in two circuits of 8 panels each, each driving a 24v 80# thrust Minn-Kota Taxxis Motor with a 10X4 LH Pusher Prop from APC Props.

I could push the 24 foot pontoon at 5.1 mph top speed at about 1100 watts applied to both motors.

I could cruise all day at 3.5 mph burning about 300 watts per motor and tune power use to power production using in-line amp meters and power output data from the MPPT Charge Controller.

My main mistake with this configuration was mounting the battery array too far forward on the pontoon with 480 pounds of lead reducing the craft's ability to bound up over waves/wakes.  Any wave/wake over 12" resulted in deck wash, not a problem for most pontoons, but not good when flooding a battery compartment full of electronics. (Solution, move the battery array a bit back from amidship or get lighter batteries)

Otherwise, it was great fun scooting around our 300' wide river with half a dozen friends.

Thanks,

Ken Cooke

On Wed, Nov 4, 2020 at 9:03 AM wdr99 via groups.io <wdr99=yahoo.com@groups.io> wrote:

Ken,

Nice pontoon setup.  I like the idea of turning one motor off for tight quarters.  Did you have solar panels pn your pontoon?  I could get maybe 400 watts of solar on my boat as it's currently set up.

In my Redwing, I've decided to fabricate a mount for dual 24v 80lb motors controlled by a tiller.  The Traxxis motors that I'm using are pretty nice and have a wig wag potentiometer throttle which I can integrate in the tiller.  It turns out I'm not as big a fan of my remote steering wheel as I thought I would be.  A small boat sailor at heart.

I've got my proof of concept system built and have been measuring no load states.  Unfortunately it's winter now so I won't be able to launch for quite awhile.  With all this time, perhaps I'll commit and remove my ICE.

Bill

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Re: [electricboats] Trolling Motor Propellers

Ken,

Nice pontoon setup.  I like the idea of turning one motor off for tight quarters.  Did you have solar panels pn your pontoon?  I could get maybe 400 watts of solar on my boat as it’s currently set up.

In my Redwing, I’ve decided to fabricate a mount for dual 24v 80lb motors controlled by a tiller.  The Traxxis motors that I’m using are pretty nice and have a wig wag potentiometer throttle which I can integrate in the tiller.  It turns out I’m not as big a fan of my remote steering wheel as I thought I would be.  A small boat sailor at heart.

I’ve got my proof of concept system built and have been measuring no load states.  Unfortunately it’s winter now so I won’t be able to launch for quite awhile.  With all this time, perhaps I’ll commit and remove my ICE.

Bill

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Re: [electricboats] Quest for 2X Hull Speed

Keith, yes I'm happy with my Haswing. The only negative I can think of is that the speed control is not precise in reverse. In the forward direction, it's fine. I typically run the motor for up to 2 hours at a time, at half to three quarter speed.

I bought mine from a local online reseller who also sells in person (or did): Electric trolling motors HASWING in Canada

$910.00 Electric trolling motors HASWING in Canada We are proud to introduce the newest design of HASWING electric trolling motors in Canada.Electric outboards...

Looks like he's sold out of almost everything.

Re: [electricboats] First run

Hi Mitch, 

Mine is 48v. After adjustment of the prop angle ever so slightly the system is much quieter and now using a victron 712 meter we still have about the same numbers. Above 5kts it starts to ramp up the draw very quickly (I mean its still a logarithmic curve but that's the dense area under the curve). 

Now I'm wiring up new powerwall style lifepo4 batteries and moving the AGM to be the house bank. 

On Nov 1, 2020, at 10:27, Mich Pop <michpop@gmail.com> wrote:

Hi Ryan

Those are very good numbers.

We have a similar boat and a much higher consumption.

We are running a 48 V system.

Do you use a higher voltage?

Cheers

Mich

On 27 Aug 2020, at 2:52 am, Ryan Sweet <ryan@ryansweet.org> wrote:

I am working on a larger write up but thought I would share some results from my first run.

Main concern: it was too loud! I think the cutlass bearing was too worn when I started The project and there was too much motion up and down. I think that the shower is aligned with the motor well, but dad it's at to much of an angle with respect to the Cutlass bearing. This is also putting pressure on the stuffing box.

So I need to adjust the angle.

But I was able to get some preliminary numbers

The boat is a 1979s 30 foot fiberglass hulled ketch (Rawson 30).  Hull speed is 6.9ish

Power consumption is almost logarithmic, as expected ~20a @ 3.2kn, ~55a @ 4.5kn, 115a@ 5.5kn

Don't yet know how much to trust that meter.   
What do you guys use to monitor battery capacity? I have a little meter that I ordered from Amazon but it recorded 100% wow at the end of the run and when I plugged in the charger, it recorded between 50 and 75% unfortunately the charger doesn't give me a better number than that.

Re: [electricboats] Quest for 2X Hull Speed

Anyone know if there are DIY kits (or something that can be adapted) for electric outboards powered to about 3kW? I may be able to get my hands on a nifty locally produced rim driven thruster unit and controller that could be the basis of a handy OB for my 10ft/3m dinghy tender ... so now I wonder where I could source the 'skeleton frame' - ideally with a bit of a built-in rudder blade like the Torqeedo and ePropulsion OB offerings.

Kai

East Sussex, UK

On 1 Nov 2020, at 18:00, Keith M <kmerranko@gmail.com> wrote:



[Edited Message Follows]

The weather cooperated and I finally tested the Newport Vessels configuration above (OEM config plus Eprop 10.2x6.73 propeller, hub/shaft fairing, and cavitation plate).  I reversed the power leads with the internal voltmeter unplugged.  At full speed, I averaged 6.4 mph at 760 watts.  That is better than hull speed and a very inexpensive setup.  I am not sure if the motor the brushes were in the neutral plane with the motor turning clockwise.  I do not have a good way to measure, let me know if anyone has the expertise to resolve.  Not too bad on the performance, but I hope to exceed that with the Lehr outboard conversion...

Also, the water flow around the motor was really smooth, unlike the OEM shape and the version with just the foam on the trailing edge.

Re: [electricboats] Quest for 2X Hull Speed

[Edited Message Follows]

The weather cooperated and I finally tested the Newport Vessels configuration above (OEM config plus Eprop 10.2x6.73 propeller, hub/shaft fairing, and cavitation plate).  I reversed the power leads with the internal voltmeter unplugged.  At full speed, I averaged 6.4 mph at 760 watts.  That is better than hull speed and a very inexpensive setup.  I am not sure if the motor the brushes were in the neutral plane with the motor turning clockwise.  I do not have a good way to measure, let me know if anyone has the expertise to resolve.  Not too bad on the performance, but I hope to exceed that with the Lehr outboard conversion...

Also, the water flow around the motor was really smooth, unlike the OEM shape and the version with just the foam on the trailing edge.

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Re: [electricboats] Quest for 2X Hull Speed

The weather cooperated and I finally tested the Newport Vessels configuration above (OEM config plus Eprop 10.2x6.73 propeller, hub/shaft fairing, and cavitation plate).  I reversed the power leads with the internal voltmeter unplugged.  At full speed, I averaged 6.4 mph at 760 watts.  That is better than hull speed and a very inexpensive setup.  I am not sure if the motor the brushes were in the neutral plane with the motor turning clockwise.  I do not have a good way to measure, let me know if anyone has the expertise to resolve.  Not too bad on the performance, but I hope to exceed that with the Lehr outboard conversion...

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