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First produced in 1965, the Cessna Skymaster is a twin-engine civil utility aircraft built in a push-pull configuration. Instead of mounting the engines on the wings, one is mounted on the nose and the other at the rear of the pod-style fuselage. The combination of a tractor and a pusher engine produces a unique sound. The military version of the 337, the Cessna O-2 Skymaster, was featured in the 1988 film "Bat 21".
| Wingspan: | 50" |
| Wing Area: | 387 sq in |
| Wing type: | molded bead foam construction |
| AUW weight: | 39oz |
| Length: | 37 1/2" |
| Wing loading: | 14.51 oz/sq ft |
| Servos: | 5 – 9 gram micro-type |
| Transmitter: | 4-channel twin stick mode 2 |
| Receiver: | 6-channel |
| Battery: | 3 cell 2200 mAh LiPo with balance taps |
| Motor: | Twin Outrunner-type brushless |
| ESC: | Two 18 amp brushless |
| Charger: | 12V DC cell balancing 2 to 3 cell Lithium battery charger |
| US distributor: | Hobby Lobby |
| Available From: | Hobby Lobby |
| Retail Price: | $239 |
The review package shipped from Hobby Lobby and it arrived double-boxed and free of damage. Everything was secured inside the RTF box and was well protected in a foam shell. Since it is a RTF design, the Mixmaster has a very low parts count, and I only needed a small Philips screwdriver and hex wrench (included) to complete the few assembly steps.
Kit includes:
Kit requires:
The instructions are photo-illustrated and printed on one double-sided sheet. Although this is a “ready-to-fly” aircraft, there are a few assembly steps. The written portion of the instructions was a little difficult to understand, but the photo illustrations are a big help. All the assembly steps could be completed at the field with only a small Phillips screwdriver and the included hex wrench.
The wing center section and aluminum struts are already installed, and all that is needed is to plug in the two wing panels and attach the monofilament wing reinforcement wire. The unique electrical connectors in each wing panel supply power to the aileron servos.
No assembly is needed, except to install the steerable nose wheel with the provided hex wrench.
The twin tail booms, elevator, vertical tail fins and rudder are already glued in place. I simply attached the horizontal fin/elevator with two screws and fastened the clevis to the pre-installed elevator pushrod.
I installed the pre-bent main landing gear into the slot in the fuselage, then inserted the plastic 'keeper' clip which holds the gear in place. Be sure the lading gear sweeps rearward, otherwise the plane won't balance on its landing gear and will appear tail heavy!
The included 12V Lithium Polymer charger/balancer was simple to operate, and it took less than an hour to fully charge the battery. The twin outrunner brushless motors and twin 18 amp ESCs are factory installed. The battery is secured in place with velcro (optional) and a rubber band. A removable magnetic hatch provides easy access to the battery compartment.
After charging the battery, I installed it in the pre-molded battery bay. The battery is held in place with a rubber band, but I decided to install some velcro for added peace of mind. I verified that the control surfaces were at neutral trim and moving correctly. After a quick range test I headed to my club field for the maiden flight!
I couldn't find a reference to the CG location in the instruction manual, so I simply measured 1/3rd of the wing chord from the leading edge where it meets the fuselage, and the Mixmaster balanced perfectly at this point.
The maiden flight was made at my club field on a fairly windy afternoon. Even on a short grass runway, the Mixmaster felt very maneuverable with its tricycle gear and steerable nose wheel, with no tendency to ground loop.
With the stock 3-cell LiPo battery, the Mixmaster was well powered with its twin outrunners and 8 X 6 propellers. Just a few clicks of throttle and the Mixmaster began moving forward. As the throttle advanced to full, the twin outrunners spooled up, and the Mixmaster was airborne. The plane climbed at a fairly shallow angle but gained altitude quickly.
With an all-up weight of 39 oz., power was needed for a smooth landing, but the plane was very stable and predictable with no surprises during the approach. I did not attempt a power-off landing.
The twin outrunner brushless motors are very powerful. They provided plenty of motivation for a smooth takeoff, and both motors seemed to get enough fresh air cooling although the battery was fairly warm upon landing after several full throttle passes and some climbs. Though I did not have motor test data for this review, I would say that the 8 X 6 props are the proper choice for these motors.
The Mixmaster has a fairly gentle stall, but full throttle was needed to recover quickly. The plane never appeared to want to tip stall or snap, however.
Loops were big and smooth, with only a slight amount of wing flex. Just begin with a shallow dive and ease back on the elevator stick with power applied until the bottom of the loop. The large elevator was very effective for this maneuver.
Rolls were crisp and fairly axial but not particularly fast. Just a bit of down elevator was needed during the inverted portion to make them smooth.
Hammerheads were a lot of fun to do, again thanks to the Mixmaster’s twin rudders. The tail kicks right over at the top of the maneuver.
I would not recommend the Mixmaster as a beginner plane; it is a heavy plane and flies fairly fast, and it requires some experience on the sticks. It would make a good first aileron plane. With its built-in dihedral, it self-corrects well and is easy to maneuver on the ground with its nose wheel steering. It is capable of some nice aerobatic maneuvers and its speed will keep you on your toes. The Mixmaster's smooth flying characteristics and beautifully rendered design make it a pleasure to fly!
As you can see from the photos, the Hobby Lobby Mixmaster is a great looking aircraft!
The Hobby Lobby Mixmaster RTF can be ready to fly in just a few minutes with only a small Philips screwdriver and the included hex wrench. The stock twin outrunner power system cranks out plenty of power, and its stable flight manners, great looks and large presence in the air make it an exciting flier for intermediate and advanced pilots alike!
Pluses:
Misses:
The Hobby Lobby Mixmaster is a very good performer and a solid value. It looks terrific the air, is a very stable flier and handles wind well. It would be a good choice for a first aileron plane or for the RC pilot who wants a scale-looking aerobatic plane that is exciting to fly. See it at your local hobby shop or at Hobby Lobby!
Last edited by Angela H; Aug 12, 2007 at 07:57 PM..
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