I was wondering if there are folks here who are located in Lake Ontario and would be willing to help me assess the system that is on my boat that the previous owner put together. I obviously need to get up to speed on this but as this board demonstrates often, there are many considerations and it would be nice to have a sense from someone else who has diagnostic tools and the like. My boat is located now in Sakets Harbor.
Tuesday, November 19, 2024
[electricboats] Lake Ontario folks?
[electricboats] question about lightning
Hi Folks,
This past season was the first one for me using my Pearson 10M but was a somewhat shorter one due to some health issues of my family members. I did get out several times and was able to begin using the system that the previous owner had put together which is a Thunderstruck with 4 Li Cells for 48V and 196Ah, I believe. My question is what measures any of you take during thunderstorms if you cannot be back to the marina or get off the boat. My boat has a mast that is keel stepped on a metal plate that is bolted into the metal portion of the keel. It would seem this is an adequate path for a lightning strike if it were to occur and that a reasonable approach if we have to be on the boat through a storm is to get into the forepeak and away from the mast and Li cells which are in the port quarter berth. Is there anything else that could be done aside from switching off the motor, path to cells, etc. Presumable the breakers/fuses on the mast electronics will blow to hopefully protect some of that.
Thanks,
Scott
Monday, November 18, 2024
Re: [electricboats] Sevcon gen 4 overload?
Hello Tim,
Are you able to count the flash on the SEVCON ? You must have between 1 and 15 flashes (see in the attached file).
It is preferable to connect to the controller via the CAN bus and IXXAT's USB-to-CAN interface and DVTC software...
This is a very interesting case: propeller jamming. The drive will send the programmed maximum torque and wait for the motor to turn. The motor and the drive may heat up, so we should have a thermal cut-out, or a control law that says “STOP, the motor hasn't been running for too long...”.
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[electricboats] Sevcon gen 4 overload?
Recently I had a fail with my electric motor installation on my yacht which I couldn't immediately diagnose. Subsequently I had a diver cleaning the anti-foul and he found masses of fishing line wrapped around the propellor. It was apparently quite tight and while he managed to remove 90% of it and got the propellor to rotate, I still can't get the controller to respond. I have looked at the fault finding led on the controller casing and when the key is turned on I am getting multiple flashes far in excess of anything in the manual and then fades out. Given that I seem to have full charge, fuses intact and nothing appears during visual inspection I am at a bit of a loss on how to proceed. I am tipping that it must have got overloaded with fishing line jamb and that some sort of overload has been tripped...
Any have any thoughts?
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Thursday, November 14, 2024
Re: [electricboats] Cells (modules) are dying.
What prop did you end up using ?
Thx
On Thursday, November 14, 2024 at 07:40:28 AM PST, cpcanoesailor via groups.io <cpcanoesailor=yahoo.ca@groups.io> wrote:
Thanks for the video links. I found them interesting, since I have both LFP and NMC batteries in different applications.
Re: [electricboats] Cells (modules) are dying.
Thanks for the video links. I found them interesting, since I have both LFP and NMC batteries in different applications.
Wednesday, November 13, 2024
Re: [electricboats] Cells (modules) are dying.
If you're ever bored and have nothing better to do, watch these two videos to understand the what and why of lithium battery degradation, and the difference between the two.
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