Electric Trolling Motor with Broken Magnets. Will It Start? (Sailing Yes Let's 15) 

hmm, yes that might be worth trying. I sometimes forget to take it out of the water after using it (which will add up to a lot more time than it's actual use, for sure!) it hadn't occured to me that lead could work, I looked it up, apparently lead is less reactive than steel even, so it would actually make it worse. according to this, only option is zinc or magnesium structx.com/Material_Properties_001.html

Absolutely not! a gas outboard just isn't very reliable. Electric you turn the handle and it goes. Gas you pull the cord and hope! And there are so many things that can stop petrol engine from working, either causing it to stop suddenly or to not start.

thanks! btw, I also have a 12v one, that works okay actually, except the wires do get hot if you use it full power for very long. It become a lot better when I put a 12x4 RC prop on it, actually. (will have to make another video about that)

but actually... discovering how good these model airplane props are, and also that they are both cheap and come in a range of sizes, has got me thinking a lot about pedal power

I don't know. These small DC trolling motors are rated in thrust, which is probably more helpful anyway. 1 hp = 750w but comparing electric outboard to gas outboard like that doesn't work because actually the gas outboard only gives that power at max revs and in practice, and electric motors have much better torque at low RPM so the "equivalent" electric outboad will actually be less power than the rated HP of the gas one. sculling oar is good, I made a sculling oar for my monohull, but it took a while to get it working well. there isn't very much information on how to make them. Oh yeah, the prop size is really important. For the trolling motor, buy largish plastic RC airplane props and try different ones until you find the best for your particular boat. I tried a 12x4 prop on my 12v 55lb trolling motor and it pushed my cat at 2 and a bit knots, reasonable and almost a knot faster than with the stock prop. The RC props come in a range of sizes, more than outboard props, and are cheap because RC people replace the prop after any crash/bad landing!

@@dominictarrsailing oops ya, i meant LB, not HP lol. ya, i have had a bit of trouble finding info on building a sculling oar, but i did stumble across a couple videos that talk about how they are made and why they are the shape they are. my trolling motor is only 30lb, so i may have to get a bit bigger one, depending on the boat i get. ill definitely have to remember to look into the rc plane props, that's a REALLY good idea i definitely wouldn't have thought of lol. did you use a common 2 blade prop, or were you able to find a 3 bladed one? can you give me an estimate for the weight of your catamaran? just curious how much weight that little motor is pushing.

@@PKAdventures the trolling motor in this video is 24v and says 86lb. I also have a 12v one that says 55lb. But once I got a the 12x4 prop the 55lb with 12x4 prop was just as good. (I didn't have time to try different sizes, so maybe could be improved). The cat is about 2 tonne with cruising gear on board. Now I got a way better 48v brushless outboard, can push it through the wind and has better range. Was a lot more expensive. about 2k nz for battery and outboard. The 12v 55lb one was $140 second hand but $600 battery (which also powered the lights, laptop etc). I'm gonna make a video about this soon. The 12v one was just perfect on mihi, useful but still underpowered on yes let's. Your 30lb one would go well on a canoe or dinghy I'd say Yeah it was just a two blade prop. The important thing is the diameter. Small blade area (skinny blades) is actually more efficient, but means higher wing loading, which produces cavitation (bad!) at high speed, but the trolling motor isn't that fast so it's okay. That's why most boat props have greater area, to avoid cavitation. A larger prop turning slower is more efficient.

@@dominictarrsailing hmmm it looks like ill have to do some more research into propellers, but i won't be able to get too far before i actually get a boat and have some real numbers and something i can actually test. i have a couple lithium batteries im going to be using for my solar build for my suv, and i can pull 1 of those out to power my 30lb motor, so i guess ill hold onto it for some smaller boats i want to build to test out some ideas, but probably not in the paper mache one cuz i don't wanna sink with a good lithium battery and motor lol thanks for all the info, you are awesome dude! ill definitely be looking forward to seeing that vid about your electrical and motor setup