David J. Beaulieu
  • Bangor, ME
  • United States
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David J. Beaulieu's Discussions

A/P and Dynon servos

Started this discussion. Last reply by Ken Ryan on Saturday. 5 Replies

FYI to builders...pondering servo size (strength) when installing their autopilot system. I have a STOL 750 with two axis autopilot ( Dynon SV-32 servos.)   During my 40 hr test phase I was having…Continue

UL Power crosses the Atlantic...

Started Mar 27 0 Replies

For those of us with UL engines...the latest KITPLANES magazine (May 2018)  has an article which may bolster your confidence in engine choice.  Eases my mind a bit regarding flying long cross country…Continue

Legal night flight lighting

Started this discussion. Last reply by David J. Beaulieu Mar 17. 20 Replies

As I moved out of Phase I testing, I am no longer restricted to strictly daylight flying, night flights are an option!  I am disappointed to come to the realization that my Strobe/Nav AeroLED EXP…Continue

Bruce's custom covers for our Zenith's

Started this discussion. Last reply by Wayne Tyson Mar 15. 7 Replies

Fellow Z'ster's I am considering the purchase of a light weight travel cover for my 750...wondering if it is robust enough for more than just an occasional road (air?) trip. …Continue

 

David J. Beaulieu's Page

Latest Activity

David J. Beaulieu posted a discussion

A/P and Dynon servos

FYI to builders...pondering servo size (strength) when installing their autopilot system. I have a STOL 750 with two axis autopilot ( Dynon SV-32 servos.)   During my 40 hr test phase I was having problems getting the autopilot pitch servo to not slip - esp. in turbulence.  Went thru the whole setup routine per Dynon, but no joy, airloads were too much for the servo as the A/P worked to maintain selected altitude in anything but smooth air.  Even then, in smooth air, during prolonged turns, the…See More
Saturday
David J. Beaulieu posted a discussion

UL Power crosses the Atlantic...

For those of us with UL engines...the latest KITPLANES magazine (May 2018)  has an article which may bolster your confidence in engine choice.  Eases my mind a bit regarding flying long cross country trips.Just need to get my head wrapped around the slooow scenic pace ;)See More
Mar 27
David J. Beaulieu posted a blog post

A Zenith Builder in Ghana

Interesting clip regarding a couple of people mentioned within our forum previously...inspiring!https://www.liveleak.com/view?t=uLUxz_1521935468See More
Mar 24
David J. Beaulieu posted a photo

Flyday!

We got hammered with 20" plus of snow last week. Weather has been too windy to fly. Had calmed down today to 12G20 so I had to go see what "Sky Turtle" could do. Still bumpy below 1000' but easily manageable with landings and power management. First…
Mar 20
David J. Beaulieu posted discussions
Mar 13
David J. Beaulieu posted a discussion

Viking engine monitoring...

Possible to do this thru the Dynon SkyView system versus the Viking View system,etc.?See More
Feb 25
David J. Beaulieu posted a discussion

Closing out 40 hr Phase I testing

With an hour of flight testing left to complete my 40 hr flight test phase, I am curious about exactly when/how I declare the operating gross weight of the aircraft.  In my operating limits, I simply have to state a couple of V speeds and at what weight I accomplished/acquired the values.  Is that all there is?No POH is required, yet I find that there is no real clear guidance on where/how to unequivocally state the max gross weight of the aircraft.  For example, I flight test to the design…See More
Feb 22
David J. Beaulieu posted a discussion

Flying into Canada with EAB aircraft registered in U.S.

As I approach my 40 hrs fly off in Phase I test I've been reviewing my Operating Limits.  One line that caught my interest was regarding flying into other countries. "Operations in civil airspace outside of the United States will require the written permission of the applicable Civil Aviation Authorities (CAA).  That written permission must be carried aboard the aircraft together with the U.S. airworthiness certificate and, upon request, be made available to an FAA inspector or the CAA in the…See More
Feb 15
David J. Beaulieu posted a photo

3 inch extension

For the nose gear strut to fork interface. Preparation for fitting a 5" wheel/tire with front ski from Datum.
Feb 14
David J. Beaulieu posted photos
Jan 21
David J. Beaulieu posted photos
Jan 18
David J. Beaulieu posted photos
Jan 10
David J. Beaulieu posted photos
Dec 17, 2017
David J. Beaulieu posted a photo

fuel caps

Since starting Phase I test flight. my postflight checks have discovered a slight vacuum on the fuel tanks after an hour or two of flying. Occurred whether starting from full or partially full tanks. Therefore, like many others, I am modifying fuel…
Dec 15, 2017
David J. Beaulieu posted a video

Heat control for CH750

Instead of a cable using a RC servo to open and close the valve
Nov 26, 2017
David J. Beaulieu posted photos
Nov 25, 2017

Profile Information

Aircraft Model
STOL CH 750
Project Status
Flying
Building From
Kit
Engine installed (or plan to install)
UL Power
Building Experience
No Experience
Flying Experience
Commercial / CFI
Building and Flying Info / Your Profession / Other Background Info
Retired Military Pilot / Engineer by Education / Commercial Pilot by choice (until my CH750 is flying and out of test...)

Loving the "Great North Woods" of Maine
Home Airport (ie. KMYJ)
KOLD (Old Town, ME)

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David J. Beaulieu's Blog

A Zenith Builder in Ghana

Posted on March 24, 2018 at 9:30pm 2 Comments

Interesting clip regarding a couple of people mentioned within our forum previously...inspiring!

https://www.liveleak.com/view?t=uLUxz_1521935468

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Comment Wall (9 comments)

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At 6:01pm on January 10, 2018, Thomas Jackson said…

David, I saw that you are interested in Datum skis. I have been flying with the skis for 4 years and am very satisfied with them. If you have any questions forward them to me and I will be gald to answer the best as possible.

Tom

At 5:45pm on November 28, 2017, Danal Estes said…

David,

You asked what we were seeing with the bad injector.  The above is typical.  #3 cylinder just was "not tracking" with the others. 

Digging a little deeper, it is a bit hotter than others at idle (lean, where everything should be very rich), gets even hotter if the power is up only a tiny bit (even leaner), and actually "goes cold" when the power is advanced anywhere above about 1500 RPM, because it gets so lean it is not burning. Too lean for the plugs to ignite. 

And... we thought this was a bad injector for a long time.  After chasing down similar problems several times, we came to the conclusion the injectors were fine... that the ECU had an inadequate ground.  

Conclusions:

First, check that all EGTs and CHTs "Track" each other in ALL conditions before first flight. 

Second, check for very, very, very good grounds in an airplane that is so dependant on electronics. DO NOT count on the frame.  Strap and/or "Star" (i.e. home run wires) everything. 

Feel free to ask questions. 

P.S. Graphs produced from Dynon logs via custom software that I wrote.  Feel free to send me a log file if you want it graphed. 

danal (dot) estes (at) gmail (dot) com


At 11:23pm on August 5, 2016, Kurt Satter said…

David,

You can reach me about the charger at ksatter@Verizon.net ...  I can get it off to you by Monday.

At 9:24pm on May 16, 2016, Doug Malloy said…

Hi David. Hey, need to ask you about your experience with the Skytek tank. I talked to Keith at Skytek and watched the Rotax videos and am impressed with the product. Not impressed with the price and not sure about the 1 gal capacity. They say 7 and half minutes at full power for a Rotax engine if you are down to just the header. Assume then for a UL it would be about half that. I plan on a UL350is. I have seen the pics on your installation but do you still think this tank is the way to go?

At 5:25pm on March 17, 2014, Walt Snyder said…

David, too funny, I happened to zoom in on your dog because I kept thinking he really had a short muzzle for a German shepherd, and he looked like a cool mix………..then I saw someone stole his legs…… Pretty cool dog, purebred? I don't see many out here with shepherd markings like that.

Walt Snyder 

At 7:56pm on December 2, 2013, Roger E Barnes said…

nice to here from you Dave your welcome to stop in anytime.

Our goal is to move project to Caribou this spring for assembly, and begin testing by November.

Your postings show fine work and great progress; the State of Maine is a great match for the 750 performance.

At 7:53am on May 7, 2013, Normand Lambert said…

Hi David,

Looking good ! Keep up the good work...It will eventually FLY...and well too !

Regards,

Norm

At 7:44pm on December 25, 2012, Roger E Barnes said…

sure its convenient just let me know when you will be coming through.

Merry Christmas to you too

At 9:17pm on December 24, 2012, Roger E Barnes said…

Kit building a 601XL since 2008 goal is to have it complete by this spring.

could use the material from the crates for your bench, its usually good straight material.

goes without saying but take the time to make it perfectly level, mine sat on metal saw horses and was 4 by 14.

air riveter is a really good idea, and air drill if compressor is large enough with #20 and #30 bits probably ten each to start i got mine at Fastenall in Presque Isle and they can get mil spec hardware too, you will need a torque wrench that reads in inch pounds. 

when de-burring holes us a file, i used a drill bit and it chamfers as much as it deburs.

i have an acquaintance in Turner who has built and flow a 701, built a 601 and is currently scratch building a 750 so there is some experience around.

wing construction of the 601 required six 2x2x6foot thin walled steel tubing i have these here if the 750 construction requires tubing like this i would be willing to loan them out, tools too.

rbarnes3@maine.rr.com   

 

 
 
 

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