Recent content by alan-c

....and I concur with Torontobuilder regarding stability when turning. I've experienced this in a kayak powered by cordless drills and steered with a little wooden rudder; steering input rolled the boat very sharply at highest speeds.

If your canoe is something like a 16ft Canadian you don't need anywhere near 3.5hp. I built a Turnigy C80-100 motor onto a Evinrude 3hp leg and it is much more than needed for my 14ft rowing skiff. It is steerable and mobile at 100W, 370W (1/2hp) is my chosen cruising power which gives about...

That's a nice project. I think the little wattmeters for R/C are not made for continuous use. Here in the UK I am using a Neodym wattmeter (currently available from Modelmaniacs) to control a brushless outboard conversion; the spec says 75A continuous, 100A burst. It even has a built in servo...

You could easily power a small hovercraft like SBW with a few hundred watts of electrical power, but it probably still wouldn't be a very practical craft; it would prove that it is possible. A few Kw would make a practical craft though. I made a small part of SBW-the propeller one way clutch...

1. Yes, you put the changeover switch between any two motor phase wires, but you must never operate it while current is being supplied to the motor - I think this would kill the esc. I did try it but as I said, the one way clutch doesn't allow to transmit torque in reverse. Best solution would...

How's this for a guess - I have a 16ft skiff powered by a brushless outboard that does about 6mph (I guess) on 600w. That's 100Wh per mile. A skinny touring kayak might use half that ie. 50 Wh per mile. Also, lead batteries in a kayak that can carry the weight might give it more stability which...

Thanks, spinningmagnets, for your reply. While waiting for a reply I decided to solder connectors to the "good" ESC and found that it was not working, just spins the motor for a fraction of a second, unless you disconnect, then reconnect the battery; also does not give an audio signal for the...

Hello, endless folk. I've just bought some Jeti/Hacker 99A r/c speed controllers, used, and two of the three have melted their input capacitor leads. They were sold to me as two working and one not working. I haven't tested them yet because I imagine that could damage the FETs in the ones with...

Use a boosting voltage converter between the power supply and ESC. But why on earth use a hub motor? It will be mechanically very difficult to attach to a shaft. For your power level you can use the smallest low Kv outrunner you can find and the smallest toothed belt reduction. I built a rig at...

Sorry, just got back to this thread. Just passive cooling under a ventilated cover. ESC/diecast box never gets uncomfortably warm. I think a 180kv would take quite a lot more current as the power absorbed by a propeller goes up at the cube of speed. I make that about 78 amps.But I reckon you...

Infinity, as a complete guess, 4 1/2 kt on a heavy grp 11.5 ft dinghy and 5 1/2 to 6 kt on a slim and light 16ft wooden skiff. But way better than a trolling motor which was the objective, not silent like a trolling motor though. The only build problem was connecting the motor to the shaft; I...

Infinity, I've done exactly what you want to do, with a Turnigy 80-100 130Kv and an Evinrude 3hp leg, details here: http://uk-hbbr-forum.967333.n3.nabble.com/electric-outboard-tp4025171.html I had no problems at all using a Turnigy Pentium 100A controller (apart from water damage). It starts...

As a previous poster suggested, your only sensible option is to increase the voltage and gear down with a toothed belt drive or similar in inverse ratio. If you double the voltage and use a 1:2 speed reduction) you will halve the current and heat losses will be 1/4 at the same power. Then you...

You've answered my unasked question; solar PV would be more efficient than SE. The only plan I have for the outboard is to close couple the motor to the adapter plate and then make a finned aluminium cover for the motor to replace the plastic BDH container which currently covers it. This will...

Geoff, this link should get you some pictures and brief description http://uk-hbbr-forum.967333.n3.nabble.c ... 25171.html I copied it from jeremy's post in a thread "outboard conversion" here. I didn't do much calculation really - the little boat I had went slowly on a Minn Kota drawing about...