Perkasa Refurb
so on the bench the story from the previous owner was that it was polarity reversed which blew the two speed controllers, some wiring was removed and so on, so I have 3 motors, and they are quite small, look like 400 size brushed. To keep things simple, Im not going to do my usual convesion to brushless, and luckily found a new Electronize esc in my spares box.
Cant find anything in relation to instructions, But Im sure these where good for two motors?, Ive fitted an inline fuse to the battery side, and the motor side to be double protected 😇
This now leaves the centre motor, and the conundrum as to the best, but cheapest way to drive this.
Another dig into the boaty spares box (actually living in the attic due to no use anymore!) I found a little reversing esc, think it was originally for a rc car. Luckily it works, but how to control it?
My boat transmitter is a DX6i Spektrum, and has a limited ability to mix channels, so using a spare channel (aux 1 on the receiver) I mixed this channel to the throttle. The transmitter gives the ability to use a switch to operate, so I assigned an unused on/off switch (flaps for a plane) so now I can run the boat with outboard screws as normal, flick the flap switch on, and the third centre screw now operates. As its mixed to the proportional throttle channel, it works the same range as the main motors. Im quite pleased with this, it took some fiddling, but with my work being locked down, time is something I have!
I would like to run things on a 3 cell lipo (11.1v) as this will give a future owner a better choice for their choice of batteries, lipo, lead acid, nimh and so on, but these motors are small, so I think that might over volt them. I have two 2 cell lipos (7.4v) so will run one for the two outboard screws, and one for the centre. As the centre wont get used as much, probably just fast long runs, I can preserve this battery, and switch them over when they start getting depleted. TBH, after about 10 to 15 minutes I generally get bored anyway!, pity I cant water test☹️