New ESCs arrived and installed

The new ESCs have arrived more than one week ago, but i've only now had time to blog about them.

So, i should say the the units are a bit bigger than the TowerPro MAG8, they also use the ATMEL Atmega 8 microcontroller, only that this one is in a bigger package.

The programming card is very handy, and it enabled me to change many settings, the most important are soft start, timing advance and PWM frequency; these settings were not available on the TowerPro.

I have made some thrust vs. current measurements, it was clear that the new controllers are way more efficient than the TowerPros, even when the timing andvance and PWM were not optimally set.

Speaking about settings, i found that middle timing and 16 kHz PWM frequency gave the best results with CD-ROM motors.

The main reason i bought new ESCs was the dynamic throttle limits of the TowerPro. These new ESCs also seem to have some kind of a dynamic throttle limit, but its effects are only noticeable when the throttle and rudder are set to maximum.

Another unpleasant behavior of the TowerPros is the tail shaking when the battery gets low, this was not noticed with the new ESCs.

Apart from installing new ESCs, one motor was completely replaced and the other one has got a new stator. Both motors were wound 13 turns in 0.45mm wire in a star configuration.

Flight times remained roughly the same though the handling got noticeably better. One way to make a significant improvement is to install an E_Sky heading lock gyro, i dont know if i would do that since i have already ordered a brand new E_Sky Honey Bee King 2!