Join Date: Nov 2011
Location: On my sailboat
Thanked 13 Times in 13 Posts
Rep Power: 4
Re: Okay, I went and done did it.
I fully charged the battery before using it. I was on the water (as in using the motor
) a little over an hour, total. I ran her at high (5) speed for much of that time, though, I cranked her down as I was approaching various docks. The battery was definitely pretty much depleted, as I returned to my boat. That is, it was obvious, I wasn't getting the same power at 5, that I did when I left.
The battery terminals are bolts with two washers and 10 mm nuts. I ended up putting the spade terminal at the lowest point (below both washers
) to get the tightness required to keep the cables connected. As an aside, Minn Kota recommends an inline 50A fuse or circuit breaker. Which I plan to add at some point.
Notably, before setting out, I did a lot of reading. And, of course, I took oars, just in case. I did find this informative article
. The guy also provided a spreadsheet. I changed his numbers down to 35AH and 75RC for the batter.y I could not find any RC info for the aforementioned battery, so I just made it up. I know... Anyway, from those calculations, I could get one hour on a fully charged battery, going at 5knots. I did not measure speed but I did run it a 5 and I did get my hour-ish. So that was good.
As for the brackish water bit? Since I've only used it once (today
), don't expect to see anything, at this point. There is, however, another thread
on this forum where they discussed this very thing. One poster even put zincs on theirs. Based upon the pics, I am guessing they put them on the shaft.
Also, I did do some searching, and found this interesting discussion
regarding using zincs on the freshwater model. One person on that thread claimed they used theirs for 7 years before it finally gave up its ghost. If I can get one season out of mine, I'll be happy. More than that? Happier of course. As I said earlier, I see this as a disposable.
But, I digress.
That individual said they just purchased the zinc nut (for the riptide
) from minn kota. I went looking for that nut on their site and could not find that part. So, I'm guessing they weren't happy that people were getting such great results buy purchasing their less expensive FW models and just buying a nut to keep them lasting longer. But that's jmo.
I will admit, I do wonder about the whole corroding bit. The propeller is plastic, so that (obviously
) won't corrode. I'm think the biggest thing is the motor housing. It is metal. The shaft is as well. So, it seems the sacrificial zinc on the shaft would make more sense than a zinc nut. But I know nothing about how electrolysis works on boat motors. So, please take my opinions with a grain of salt.
Regardless, will try to keep this post updated as the summer passes. :-)