RE: Eletronic engine syncronizer - no joke
Pat and All:
Not a picture, just a layout and connections diagram. I’ll post a picture when it gets here. But I do have a preliminary copy of the user’s manual.
Operating description (manual condensed, less instructions):
LEDs 1 and 2 are used for programming indicators, LEDs 3 and 4 show the rpm signal from the engines, are used to verify proper operation.
The switch is in position zero for normal operation, the other seven positions allow programming the sync unit and working as a matchbox for the throttle servos.
User programmable are servo center and end points, servo reversing, and the servo position for normal idle. This last, normal idle, is where the unit sets the throttles when one engine quits. After the reset to idle returning the tx throttle stick to idle gives pilot control of the remaining engine’s throttle.
The switch also allows you to use the auxiliary input, or ignore it.
Options available as delivered:
1) No auxiliary input used.
2) Individual throttle control, allowing either engine to be run from idle to full throttle while the other remains at idle.
3) Turn the sync unit on and off in flight.
4) Rudder to throttle mix.
The rudder to throttle mix is only active with the throttles up to approximately 1/3, it is proportional, allowing ground steering with the throttles. Full rudder gives about ½ throttle to the engine on the outside of the turn. This mode also is active in flight for advanced aerobatics. There is a dead band around the center of rudder travel, minimal rudder deflection will not affect the engine rpm.
With the sync unit set for rudder mix it is also possible to use a separate proportional channel input, then if desired the pilot has cross control of the rudder and throttles.
Remember please, this is an experimental prototype unit. Production models may vary.
It is planned for the production models also to incorporate a glow driver control circuit that is not implemented on the prototype.
Bill.