ORIGINAL: omsflyer
On the braking issue, I am using the Castle 85 and yesterday the motor began a squeal and anything past half throttle the motor sounded weird... Having a friend helping me setup the braking feature on my Hacker Q80-13.. so thinking the Castle is acting up?? Could the braking setup have gone south on me in 6 flys?? Motor is not loose and is smooth up to and just past 1/2 throttle... Read somewhere that a over braked motor could make strange noises and actions from the motor... but having several great flights with Hacker and then yesterday...
IF the brake is causing this then will be throwing my hat in the ring for no braking...
Anyone experience this squealing and seeming vibrational noises from a brake setup??? Thanks! Charlie
Charlie,
Yes, an over braked motor can have issues when restarting in the air. This would happen immediately when the stick leaves idle....not at 1/2 throttle (or 1/4 throttle, or 3/4 throttle). I've never seen a braking setup go south.....I have seen a pilots flying technique change after adapting to the brake....which means the brake setup could/should be tweaked. I have yet to see a Castle setup that has a problem with restarts in the air with the brake at 30% or less. Some setups can run substantially higher brake strength, but, 30% is pretty close to the maximum effectiveness for the majority of geared inrunners and outrunners I've played with - Neu F3A, Hacker xx-XL, AXI 53xx, Plett Evo, Hacker A60-xxX.
Squealing at 1/2 throttle or more would generally / more likely fall in the category of a timing loss, which most often occurs at high power levels, OR when a bad connector or bad solder joint is present - in which case there is also often inconsistent starting of the motor. If you have recently tried some new lipos, or flown in higher temps, the higher power from the lipos may be effectively what is causing the squeal.....and this should be minimal with 3.20 or higher software and the right settings in the ESC. I have not run the Q80 personally, but very likely the best settings for it will be low timing and OR PWM, and you may want to experiment with start power. Low start power is preferred IF the motor starts smoothly without any chatter or rocking. If the motor does not start smoothly and consistently, increase the start power.
Regards,