Blog # 28
Used the Brave many times this summer and have made some significant upgrades.
The original Turnigy (Hobbyking) ESCs both burned out - the smell still lingers beneath the deck! Both were rated at 30A and were protected by 30 A fuses, exceeding the measured maximum current draw.
Have now had too many Turnigy ESC issues, so decided to replace the penultimate failure with an inexpensive Banggood water cooled ESC of the same rating. It had been previously purchased for another project.
After several frustrating hours trying to program it through a series of beeps got it to work as desired.
Was amazed at the difference! This ESC provides good low speed modulation and control throughout the motor speed range.
The second Turnigy ESC then failed, so immediately replaced it with a similar Banggood one – this also works fine!
Have used the model with these new ESCs for many hours and am pleased with their performance.
One of my friends has a GPS speed tracker, so could measure how fast the model actually goes. The max scale speed only equates to 37 knots - well below the 50 + a Brave could achieve! Nevertheless it still planes easily and looks great.
As the low speed control is so vastly improved, decided to replace the centre shaft brushed motor with an inrunner brushless purchased earlier. This should improve performance, perhaps even achieve the scale 50 knots!
The drivetrain layout would also replicate the actual vessel, where the wing engines can be used for manoeuvring and the centre to supplement them in higher speed situations.
Bought and fitted another Banggood ESC, to this same spec. However, this one came preprogrammed with usable default settings, no beeps to decipher!
Works fine and the performance has increased markedly; will get around to measuring it one day, maybe in the Spring as the weather has turned noticeably colder.