I suppose I could change out those = wires. I would have to try and find out how the little circuit goes that = Tracy has = designed for the Renesis sensor. Does anybody have any info on that circuit = quick at hand?

Bill B

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Christley
Sent: Wednesday, January = 09, 2013 12:48 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Aeroquip hose changed to hiccup

The timing sensor thingy. "Variable Reluctance" = sensor.

On Jan 9, 2013, at 12:20 PM, Bill = Bradburry wrote:

I am currently at a loss as to what = a “VR sensor” would be??

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Christley
Sent: Wednesday, January = 09, 2013 9:38 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = Aeroquip hose changed to hiccup

A problem that mimics a poorly wired VR sensor, = but

-only happens = occasionally,

-with various levels of = "response"

-and is getting worse.

Bill, if you haven't done so already, I would suggest changing = the wiring to the VR sensor completely. It sounds to me like a = textbook example of the worst sort of electronic malfunction you can = have…an intermittent open. You'll never find it under normal test conditions, and it = will manifest at the most inopportune times. The only way to completely = rule it out as a failure scenario is to completely replace the circuit = path.

On Jan 8, 2013, at 11:42 PM, Bill Bradburry = wrote:

No, I have the 2.85 gearbox. = I have the MT electric prop, so I fly WOT and use the prop to govern the engine speed.

I have changed the plugs with no effect. The mixture is fine when this is happening. Fuel = pressure also. I had an incident once on take off like you describe where = the plane was backfiring like crazy just after I lifted off. I had the mixture too rich. I dialed it back and everything smoothed = out. This is different. It doesn’t really backfire. It is a = thump and it jerks the engine and plane. You can hear and feel it. It = seems to be a single thump and it has varying degrees of violence. Some are = just a little miss and some are so bad it shakes everything. These are = less frequent, but they are bad enough that I don’t think they are good = for the PSRU, prop, or engine = mount.

That is why I have been bugging = Tracy about the change for the EC-2. I have my fingers crossed that this = will fix it. = :>)

Bill = B