Mount The Engine - GREAT PLANES Eagle 580 Manual

Mount the Engine

We have made provisions to mount either the DA-85 or the
DA-100 gas engine from Desert Aircraft . This section of the
manual will guide you in installing the DA-100 along with the
optional short canister-style exhaust . Laser-etched marks
have been made on the firewall that match the mounting
pattern of the DA-100 . If you will be using a DA-85 engine,
please use the mounting template we have provided for you
in the back of this manual and refer to steps 6 through 9 .
Note: The DA-85 must be used with the standard Pitts style
muffler . Canister or tuned pipe exhaust cannot be used on
this model with the DA-85 .
o 1 . If you're using the DA-100 and will be using canister
exhaust, remove the cover for the exhaust tunnel . If not, you
may glue the cover in place .
o
2 . Tighten the ten bracing screws on the firewall . You
should periodically check these from time to time to make
sure that they stay tight . If you prefer, epoxy them in place .
o 3 . For the DA-100 engine, drill four 5/16" [7 .9mm] diameter
holes using the laser-etched marks provided on the firewall .
To get the straightest holes, you can drill 1/8" [3 .2mm] pilot
holes first .
o 4 . Install four 1/4-20 blind nuts on the back side of the
firewall .
o 5 . Mount the engine to the firewall using threadlocker,
twenty 6mm thick aluminum spacers (five per mounting
leg), four 1/4-20 x 2-3/4" [70mm] SHCS bolts, and four 1/4"
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