11
DA-85 installation
You will just need to center your motor in the "+". Take a ruler and draw a line across the entire
firewall for the thrust line and offset centerline.
DA-85 users only.
If using the DA template provided on the last page of your
DA manual
, check the
measurements on the template and ensure the holes are correct. Cut the paper template to the size
needed to tape it to the firewall using your thrust line and offset centerline as a guide. Mark the drilling
locations and drill holes for 1/4-20 bolts.
Desert aircraft recommends not using standoffs with the DA-85. You will need to make a mount to
properly install this motor. We used the template provided by DA and made several light plywood rings
stacked to achieve the correct standoff, which is approximately 1-7/8” off the firewall.
Mount the motor using 1-7/8" solid mount for the 85, and four 1/4-20 x 3-1/4" long bolts.
Now that the motor is mounted, mark the locations for the fuel line and throttle push rod remove motor
and drill those locations and reinstall motor. Another recommended option is to use the template and cut
a hole in the firewall for the carburetor, which will make installing push rods and fuel lines easier.
We recommend 4/40 push rods for throttle and/or optional choke servo. Also ensure there is no metal-to-
metal contact from the throttle/choke to the servos. 2/56 Ball links for 4/40 rod (not included) will prevent
the aforementioned metal-to-metal contact and will bolt to nicely to your motors carburetor.
