U-Can-Do SF
The rudder assembly comes pre-hinged and pre-glued (above left), requiring that you just install the tailwheel strut with epoxy. Afterwards, the assembly is
ent ways. I decided to mount my O.S. 65AX in the way depicted in the manual so that the large muffler is hidden in the tunnel un- der the fuselage.
Once the motor mount is attached to the firewall, assemble and install the included glow fuel tank. Included hook and loop straps hold the tank in place snugly. The mo- tor is positioned on the mount so that the dis- tance between the firewall and the drive washer is exactly 5 inches. The throttle servo and its linkage come next. I found I needed to do some minor bending to get fluid and com- plete movement on the carb’s throttle arm. In order to trim the cowl to fit over my O.S. 65AX, I created a card stock template to indicate how much of the cowl needed to be removed. Once I was happy with my tem- plate, I made sure it was securely taped to the side of the fuse so that it would not shift. I then removed the engine and its mount, and installed the plywood dummy engine. This helpful assembly ensures that the cowl is both centered and positioned at the cor- rect distance from the firewall.
installed on the fuselage. Installation of the O.S. 65AX (above right). The engine is mounted so that the muffler runs cleanly down the channel under the fuselage.
Once aligned, drill and mount the cowl with the included screws. Next, that card stock template is used to trace the area of the cowl that needs to be removed. A rotary tool with an assortment of sizes of sanding drums makes this task a breeze. Lastly, the cowl, prop and spinner are installed.
Final details
Button up the inside of the fuselage with the installation of your receiver pack and switch (if applicable) and your receiver. Be- cause the fuselage of the U-Can-Do SF is very narrow, space is at a minimum. I found my trusty hemostats very helpful when plugging servo leads into my Futaba R617FS 2.4GHz FASST receiver. Because neatness counts, I employed some self-ad- hering wire holders to keep everything out of the way. The dual antennas of the Futaba R617FS were routed as per the instructions. Final touches on the U-Can-Do SF include the application of the colorful decals, setting of throws and checking of the center of grav- ity. With my receiver pack positioned behind
the fuel tank, my SF balanced right on the recommended starting point of 5½ inches from the leading edge.
I was able to achieve the recommended 3D throws in the manual with the longest arms included with my Futaba S3152s while still maintaining proper geometry with the con- trol horn. Included in the manual is a very helpful tutorial for those who are inexperi- enced regarding how to achieve this, as well as what to avoid.
Since I had already broken in my O.S. 65AX on a test stand, the U-Can-Do SF was ready to fly quickly on maiden-flight day. For the first flight I also installed the side force generators, which install with a pair of screws each. After one last check, I started up the engine and taxied onto the runway. Time to see what she can do!
In the air
The large rudder provided excellent direc- tional control on the takeoff run, and with the 65AX’s tremendous power I was airborne in no time. After quickly grabbing some alti-
If going the glow route, the included fuel tank is assembled and fit into the fuselage (at left). The supplied hook and loop strap holds it securely. Installation of one of the two elevator servos and pushrods (above). Again, carbon fiber tube is glued over the pushrod to eliminate flexing during 3D maneuvers.
40 MAY 2014
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