During our protracted wait for Spring, have had chance to reflect on the earlier tribulations with the brushless motor
installation. My enthusiasm was sparked by an article on getting the best from your Tx in a magazine and the advantages of using the Elevon or V Tail facilities if available.
My Flysky Rx/Tx has this facility, so after some experiments, set the boat up to use the Elevon function. This puts both motor
ESCs on the same control lever, so advancing the control accelerates both screws equally and moving to either side accelerates, or slows the appropriate motor
. Think this will reduce the coordination previously required to sail in a straight line.
Fresh from that success decided to experiment further. The Tx allows reducing Servo throw, so tried that too so could reduce the max. ESC output, it also seems to work.
One problem with the original layout was that if the forward speed was reduced quickly it was very easy to move the lever through the neutral point, overshooting into reverse. This immediately reversed that motor
causing erratic operation. The Tx also has a “Dual Rate” facility to adjust the lever response from linear to various alternate rates. This allows the neutral point zone to be increased, so the tendency to overshoot into reverse is reduced. Bench tests of these adjustments suggest the model
will be easier to operate. Hope they will make controlling the model
s performance better in our closest pool, which is quite small.
A further precaution to prevent inadvertent operation of the brushless motor
s when using the centre, brushed
one, was to add two small relays; one into each of the white ESC signal wires. This allows a another channel
on the Tx to be used to select, or deselect the brushless motor
Anticipate that by turning this channel
and thus the brushless
ESCs off, manoeuvring can be accomplished without the operation being overwhelmed by a brushed motor
inadvertently being operated.
My patience for Spring is getting thinner!