Motor Mount:

I used the Hacker- AeroModel motor mount. Measure the length required by locating the cowl onto the firewall. You will need to stretch out the front mount to the last mounting holes to make it as long as possible. Locate the mounting holes on the firewall by aligning it with the cowl. Duct tape the motor mount in place and slide the cowl to see if it is centered. When you find the correct location, mark the holes on the firewall.

You can use the existing firewall hardware. Knock out the blind nuts by screwing in the mounting bolt and gently tapping out the blind nut with a hammer. Drill out the new locations and put the blind nuts into these holes. You can use the bolt to pull the blind nut into the firewall.
Once the motor mount is bolted into the firewall, mount the motor. Make sure you use blue Locktite on the mounting screws. To prevent vibration, use nylon cable ties – one on each side – at the rear of the motor. Make sure you tighten each side evenly. This reduces motor vibration on large props, particularly during high alpha maneuvers
Put on the cowl and install the prop adapter. Fit the rear spinner plate and prop. You will need to ream these to the correct size (8mm). Complete the prop and spinner assembly.

Final Tests:

Before doing any tests, make sure that the brake is turned off on the speed control. The process is:

1 - turn off the Rx battery switch
2 - unplug one power battery
3 - turn on Tx and move throttle to full on
4 - plug in power battery, turn on Rx switch
5 - wait for beep, move throttle to off, wait for beep
6 - test motor to see if brake is off

When you do a ground test, I would suggest that you get help holding the plane. The thrust is substantial and the plane can easily get away from you. Please be very careful.

The flight performance of this plane is excellent. The Fun World has great vertical and hovers well. I have 45 degrees or greater deflection on all surfaces. To achieve fast roll rates, I use the inboard flaps as ailerons.

Have a great flight!