Dynam Me 262 Questions

[fhhuber]

I can't remember if this plane runs off two separate batteries, one for each ESC, but whether or not, sounds like one of the ESC's is out of calibration. Now, to calibrate a prop plane, you turn on the radio, push the throttle to full and then plug in the planes battery, when the esc beeps at you, you pull the throttle all the way off, then it should run the normal cell count beeps. Can't see why the same method would not work for the jets as well. I've never had one go full throttle and try to take off, either with the prop planes or the Avanti, but play it safe and have it anchored down and hold on to it.

Grossman56

Default is a single battery. The aircraft ships with the ESC's Y'd together by a solder joint in each of the + and leads.

Its still not hard to recalibrate the ESCs individually, Just plug in the single ESC's control lead t the RX. With that lead for the other not plugged in, you won't affect its programming.

For most programming of the Dynam ESCs I prefer using the programming card, but that doesn't do the matching of ESC to TX throttle range.

It been a long time since I needed to do the throttle range setting on the Dynam/Detrum ESCs, so I recommend reading the manual to verify the correct procedure. If I remember correctly I had to use a 72 mhz TX and RX to make it more convenient.

[fhhuber]

Note: Dynam actually chose the right way to extend between battery and EDF by having the long wires between ESC and motor, not between battery and ESC.

Long wires between battery and ESC can develop and inductive spike that eventually ruins the input capacitors then destroys the ESC's logic chips.

(trying not to get technical)
The output end of the ESC is essentially immune to any inductive spike damage. It uses the inductive "output" of the motor's unpowered phases to sense motor rpm and adjust pulse timing.

It turns out that the way Dynam/Detrum does this, the induced voltage from the unpowered phases is fed back to the BEC and can power the RX if the motor is freewheeling after the battery falls out of the model.
This won't work on EDF, but it saved my Dynam T-28 when the sticky back velcro that was supposed to hold the battery in didn't stick to the model.

Yes, any motor can be used as a generator... for a while.