Hangar Flying

I found this on the emag site. And am wondering if this was an issue in our planes because of the long wire run?

Thanks,

Dave

A percentage of customer reported an occasional high speed miss.  This was eventually traced to voltage shifts on the 12 volt supply buss.  It’ was not so much the amount of voltage change as the rate of change that caused a momentary advance or retard of ignition timing before E-MAG’s automatic dwell compensation was able to react.  The symptom is buffered to a large extent by the ignition’s onboard capacitors.  But a combination of a) longer wire runs, b) lighter gauge power wire, c) load from the ignition (rpm), and d) the size and rate of voltage shifts all work against this buffer.  These are conditions unique to each installation.  The pattern had not presented on our test bench, our test engine, or on any of the local customer installations, so it was tough to trace down.  But once we identified the problem and could replicate it in the lab, the cure was relatively easy.  Going to 18 gauge wire for power and ground (alone) will fix the problem for many.  If not, we modified the firmware routine (standard now in all units built since 7/5/05) to eliminate the symptom.  This firmware modification is available for all E-MAG models at no charge.  So far, installing this modification has cured all (but one) of the instances reporting the symptom.  This instance is still under study.

I am less qualified to speak on this then Drew but I agree with what he is saying.

There are is a deep well of information in David Or. He knows Defiants. "David Orr" <canardfinder@att.net>,.

Sorry for you loss.

Wishing you strength.

Dave

Drew... using round #'s would you be willing to disclose your budget to go from and 0-235 to an 0-320...

Thanks,

Dave

I am flying a GU canard and am moving to a Roncz to deal with rain. I was recently told that there is a "dead spot" in the canard where the elevator has no affect.

I'd love to hear other opions or experieces.

thanks in advance,

Dave

Drew,

Can you give me a sense of how the bigger engine affected take-off performance and cruise.

thanks,

Dave

Pilot crashes home-built plane in pasture; escapes serious injury

The Associated Press

HARRISBURG, Pa. - A pilot crashed his home-built airplane in a cow pasture after suffering engine failure, but he walked away without serious injuries.

David Hanson was testing the aircraft when he experienced engine trouble just before 6 p.m. Sunday about five miles south of Capital City Airport. Realizing he wouldn't make it back to the airport, Hanson tried to land the plane on the hilly, rock-strewn field in Fairview Township, York County.

Hanson said he's not sure what happened once his wheels touched down.

"It was kind of fast. I was upside down a lot," he said.

The plane's fuselage was intact, but pieces of the plane - known as a VariEze - were scattered over 30 yards.
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Hanson, 57, of Mechanicsburg, suffered just scrapes and bruises.

"I am OK. I'm fine. I am just kind of bummed out because I spent two years building the plane," he said. "I am glad to be alive. As you can see, I probably shouldn't be."

He said he has flown experimental aircraft for seven years and that this was the second plane he had built. He said he has logged 300 to 350 hours in similar planes, including about 30 hours in the one that crashed.

"They are a beautiful plane to fly. They fly very well. I guess they crash very well, too," Hanson said.

What to you use for "Best Glide Speed" in your long ez?... I am rededicating myself to engine out practice...

I wonder if using the speed brake for practice would be a good offset for the fact that we are carrying rpm in a simulation that would not be there in a true engine out?
 ...any tips (besides practice, practice, practice)

thanks,

Dave