I have a problem with a Schulze slim-18be electronic speed controller, in fact with two of these: when I let the motor turn without prop, it turns fine, but with the prop, it stops after about a second, and I can hear the controller beep once, as if it is resetting. I'm using a Permax 6v 400, 7cell NiMH (Sanyo Twicell) with a Multiplex Gearbox 400L (the motor was included with the gearbox. The ESC has as indications: 18/25A, 6-8 celles BEC 5V/1, 5A. My dealer assures me the ESC is ok for this motor with this batteries, but he doesn't understand the problem either. He proposed to send the ESC to the dealer; I agreed and bought another one to be able to continue flying (the first one would be gone for at least 2 weeks), but that other one has the same problem (I'm going back to my dealer tomorrow). When I try with a ESC from Protec (also for 18A), it works fine. Anybody an idea what is going on ? Thanks, Stefan. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]