OS 55 AX motor

It was mentioned before that OS 55 AX motor was obtained in NIB condition, I imagined to treat this one so carefully as to keep maximum power and the longest life. As we know the initial stage of operation in break-in step is very important to finish up all the moving parts reducing slipping resistor utmost, avoiding unnecessary wear causing backlash. In another words, in the motor construction, all the slipping surfaces should be coated with adequate backlash spaces. Of course, the most important is the finishing work of Piston and Cylinder especially they have no piston ring but ABC or ABN interrelationships. OS 55 AX has ABN construction with marvelous finish supported their long lasting technology.
In order to reduce the slipping heat on moving parts such as piston to piston pin, big & small ends of connecting rod, operative road by setting smaller propeller is effective. Another way for this purpose is reduction of compression pressure by inserting a gasket between cylinder and cylinder head. 3 pieces of 0,30 mm thickness aluminum gasket would be prepared and be removed one by one according to the stage of finishing, but for this motor a few of them might be remained, because the operating noise is too high and too noisy as to make me feel uncomfortable.
A pressure nipple would be set on ordinary portion just behind the front crank shaft supporting bearing for YS fuel pressurized regulating system as usual.
UTube shows that Curare 60 is easily pulled by OS 55 AX motor, so it must be possible to draw F3A maneuver patterns relatively easily by means of YOSHIOKA Sunday Alpha 50.