dnmun wrote:yeh, don't waste a great hub motor on a boat. i wonder why there is not more investigation of the trolling motors for power. only a few comments on the board so far, and the overvolted one held up for a while until the plastic brush holders melted.
number1cruncher wrote:Well actually it will be my first boat build as well. I've found the following set of plans that seem easy enough for someone with average wood working skills. Here it is: http://www.boatdesigns.com/10-Imp-flat-bottom-rowboat/products/175/ I have been building things out of wood for over 30 years and feel quite comfortable with this part.
The next part is where I could use some input. Adding power.
My goal is to use an old 9C 9x7 hub as the motor for this thing. I'll of coarse remove the hub from the rim, pull the wires from the axle and redirect them through the side cover. This should allow me to mount the hub between the back seats and use the axle to spin the prop. I'll need to come up with a linkage to extend the axle length into the water. Maybe press a bearing on the axle shaft and support it just above the water line with a cantilever arm to keep the axle straight under load.
Does anyone have any idea if the hub would work in this setup? I'm not sure if the 500W motor (I regularly put over 1000W contiuously through my other 9x7, without much heat) will give me enough power to troll around a lake for fishing purposes. My last concern is using the axle to power the boat. Will spinning the axle instead of the hub wear anything wrong faster than normal? Not that I care too much, as the hub is collecting dust anyway.
Thanks in advance for any advice you have to share!
Xanda2260 wrote:Am I being dense? Surely this won't work. The wires are connected to the stator, which is joined to the axle. It seems you intend to hold the rotor stationary, and have the axle spinning. This means the stator (and wires!) will be rotating! Without some kind of brush/commutator setup the wires will tangle in seconds.
csmarr wrote:Think out of the box. Mount the motor in a front fork and attach paddles to the spoke flanges. Make it a paddlewheeler. Heck mount two with one on each side.
Jeremy Harris wrote:Xanda2260 wrote:Am I being dense? Surely this won't work. The wires are connected to the stator, which is joined to the axle. It seems you intend to hold the rotor stationary, and have the axle spinning. This means the stator (and wires!) will be rotating! Without some kind of brush/commutator setup the wires will tangle in seconds.
Which is precisely why my first reply post above said this: "First off, you can't make the axle go around on the hub motor, unfortunately, as it's connected to the stator and has all the wires going to it. "....................
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