BMJR Turnaround 325
The power package installed in the reviewed model includes (above left) a Rimfire 400 motor, ElecricFly Silver Series 25 ESC, and 2200 mAh lithium- polymer battery. The motor mount is typical box-in-box construction. After the cowl is shaped and installed with the supplied magnets, the motor position can be set. Install your spinner to ensure an adequate spacing. The position is then
made permanent (above right) by wicking in thin CA through the cooling holes in the cheek. Once the motor mount is made fast, the cheek cowl scoops (below left) can then be added, making the cowling a very attractive element on this airplane. The tail sub-fin central ply core (below right) is laminated with balsa. The tail wheel tiller and tube assembly is laced and firmly glued to the core.
composed of over 20 wood parts built on a supplied construction fixture. The fixture makes it foolproof and the finished cowl adds personality to the lines of the airplane. Likewise, the fuselage construction is strong, straight, and stiff and you can’t help but make it that way. Interlocking parts are balsa for the most part and plywood where appropriate strength is needed. The photos
show some of the construction sequence and prove that this is a very clever design. The key to a good flying airplane is to build accurately and straight. The one de- sign element that makes this possible is in the mounting of the tail. Once again the word refined comes to mind. The horizontal stabilizer fits through a slot in the aft end sheeting. The vertical stabilizer comes down
through the top and keys into place on the horizontal. This sets the tail group solid and straight. Once the wing is built, it’s a simple matter of aligning it based on some meas- urements to the horizontal stabilizer. It’s nearly impossible to build a crooked air- plane if you follow the instructions step by step. I’ll let the accompanying photos prove my observation.
Wings are constructed directly over the plan. The kit includes a spacer strip that, when properly positioned (above left), props up the ribs. This ensures proper alignment and even builds in some washout at the tips. The tail surfaces
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can’t help but key into the fuselage straight and true. With the wing built and placed in position, carefully measure the wing tip to stabilizer dimension (above right) on each side. This will produce a foolproof straight airplane.
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