Postby Vertical Tango » Tue May 25, 2010 9:52 am
Few years back, I had a Magni as well as someone else I was sharing a hangar with. The other Magni occured a bent crankshaft on take-off due to the Turbo opening and closing constantly with 2 or 3 secs cycles. He managed to land back and could not turn the prop by hand. Typical symptom of a bent crankshaft. R70,000 later (8 years ago !), the serviced engine was installed back, first take-off same scenario ! Noone checked the electronics ! It turned out to be a connector fault and an expensive lesson. Since that day, every 50 hours at service time, every connector that I can see and reach is unplugged, sprayed with a water repulsive oil spray, reconnected many times to brake up any corrosion that might be there, sprayed again to flush out any dirt. It is may be an extra hour in your service routine, but very worthwhile. We forget that the 914 is very electronic and a lack of signal creates a mechanical confusion.
I am surprised that in Len's case, the error in wiring in the TCU lights with the Charger light could not be noticed long ago. The TCU lights switch on and off at ignition after few seconds and the servo cycle, while the Charge light switches off only when the engine is running. Unless I misunderstood ?
Flying is like dancing, it is a love affair between the pilot and his aircraft