Awesome John... I can't wait to see how my KR with fly with this setup. I used
a Dynon SV42 for my pitch servo because I got it real cheap from a friend. I
will post pictures real soon on my installation.
I used an SV32 as my roll servo because I do not need the extra torque. My AP74
is a vertical unit because I built my panel to allocated the extra space way
before I purchased it. So now my KR is equipped as follows:
Dynon D100 as my EFISDynon D180 Flightdek as my EMS and backup EFIS (also buss
master)AP74 as my autopilot moduleEDC-D10A as my remote compass with OAT
sensorSV32 as my roll servoSV42 as my pitch servo.
I updated all of the software to Rev. 5.61 as the latest firmware. I will post
a video of the panel modifications on the KR webpage on Facebook. I hope to
also add a video of the installation after it is completed this next week. Blue
skies and keep building...
Luis R Claudio, KR2S N8984S Dallas, Texas
On Thursday, July 22, 2021, 11:52:29 PM CDT, John Bouyea <j...@bouyea.net>
wrote:
Following some very helpful tips and photos received from Chris, Jeff, Joe,
Luis, & Roger I completed my Dynon autopilot installation and test flew it a
few days ago. An autopilot in a KR is a nice enhancement. I have to admit
“George” or “Otto” flies more smoothly than I do. I’ve wanted this
capability since flying a BE36TC down to the tip of Baja and some trips to
Oshkosh.
Since I already had the EFIS D10A in the panel, I only had to buy the AP74
control head, the magnetometer compass, and 2 servos for under $1800. I
spent more time building the extensions into the SteinAir harness than I
expected. I laid everything out on a test bench and went after just one wire
at a time. When the harness was completed, I installed it into the airframe
and started the servo installations. Thank you to Joe Horton for the three
photos at the bottom of http://www.krnet.org/krs/jhorton that acted as my
starting point for the installation. Chris & Roger also shared photos that
proved helpful; thanks guys!
LibreCAD is a free drawing program I used to design Joe’s servo mounts as a
flat layout diagram and it is attached to this message. I glued ¼” plywood
doublers to the bottom skin because I wanted the servo mounts to be
removable. I put 4 @ 6-32 T-nuts under the doublers and used countersink
machine screws to hold it all together. I went a little overboard on the
wiring harness so any components could be swapped out in the field.
In the end, I have an autopilot that can follow a compass heading, a GPS
track from the Garmin GPS 150XL or fly a flight plan from point to point. If
I dial in an altitude, it will climb or descend and then level off. Actually
one of the best things about the upgrade is a totally unexpected benefit.
N133RM has pushrods directly to the ailerons and to the pitch bellcrank
behind the aft spar. The servo “drag” or friction has completely removed any
sense of “twitchiness” in the controls. It now feels like a different and
better airplane. I’ll take that any time!
Total weight added about 5 ½ to 6 pounds. Bottom line; was it required?
Certainly not. Is it a fun project and would I do it again? Absolutely!
Hoping you are all flying or building on your KRs.
John Bouyea
N133RM KR-2S – imported, fixed & flying
<http://www.bouyea.net/cur_proj/N133RM> www.bouyea.net/cur_proj/N133RM
OR81/ Hillsboro, OR
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________________________________
-Please see LIST RULES and KRnet info at http://www.krnet.org/info.html
-Change list delivery options at
https://list.krnet.org/list/krnet.list.krnet.org/ Affinity List Info Board
-Search recent KRnet Archives at
https://list.krnet.org/empathy/list/krnet.list.krnet.org/
-Search John Bouyea's decades of archive at
https://www.mail-archive.com/krnet@list.krnet.org/
