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Thanks Tracy
The NOP indication is directly linked to RPM - about 6K (Dynon miss reads at the same point). But no missing occurs at this point, engine continues smooth.
When the gremlin strikes (all hell breaks loose) it does appear clearly related to load - just before 24”Hg.
Ive never checked the timing with a light or whats in the EC2 (dumb), just thought I'd zero’d all parameters in non volatile memory.
I’m going past the hangar today so will fire her up and read the static timing setting via the EM3.
As far as Earths. I have a noisy one and a quiet one and one for the gear pump.
Each has 10 gauge wire 26 inches back to battery.
Each Earth point is an AN bolt and nut clamping all those paticular earths lugs either side of the 10 gauge earth lug. All lugs are soldered.
Power Busses are: Engine, Flight and Gear (30 amp pump) each fed by 10 gauge wire 36 inches back to battery.
In order to easily get to all electrical systems I opted for a two buss blade fuse arrangement. (The gear power is a 30amp breaker)
This does mean on the engine buss, EC2, EM3, Coils, Injectors, Pumps, are fed from the same point via 10 gauge wire rather than the EC2 independently back to to battery.
Thanks Steve and Bobby
I kept and ran the injector lines and coil trigger lines independently seperate from each other and all other wires where possible.
eg. Coils go to the right and through the firewall. Injectors to the left and though the firewall.
I do pull the throttle each time the gremlin strikes trying to minimise damage to the drive line.
Last night I had the thought of making a DB37 breakout so I can easily get a CRO onto and monitor any input/outputs to the EC2. I’ll do this before next Friday enabling testing of electrical systems.
I’ll check the CAS signal amplitude and check the injector signals.
I would like to get a video recorder, recording everything as I always forget to check some parameter each time I’m testing.
Steve
On 7 Aug 2016, at 4:12 AM, Tracy <flyrotary@lancaironline.net> wrote:
Steve wrote:
"Note to Tracy. - Did you incorporate in your code any way of knowing if the EC2 entered a watchdog routine?"
Sort of. That NOP you are seeing is a good indication that the ec2/3 has been jolted out of its normal operating loop and is trying to reboot. The backfiring is too. Electrical noise (probably in the grounding scheme of electrical wiring layout) is the most likely candidate. Tracy
Sent from my iPad
On Aug 5, 2016, at 17:31, steve Izett <flyrotary@lancaironline.net> wrote:
Note to Tracy. - Did you incorporate in your code any way of knowing if the EC2 entered a watchdog routine?
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