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Any material has some natural resonant frequency, this is a common sense in Scientific field. Combustion motor has has vigorous energy to shake any connected material with, servos, battery, switch and connecting rods especially with rudder and elevator. I knew the fact that the rods are shaken with incredibly wide amplitude waves, the phenomenon was observed that the repetitive shaking could easily destroy the rod structure, it was experimented when the motor was operated without main wind in position. The model airplane falls down immediately after loosing control by a 10mm diameter balsa rod breakage. So, make I it a rule to form the Anti-vibration construction as shown in photos. Not only 60 motor plane but also a smaller motor plane needs the same, because even a small motor like OS 25LA has enough destructive energy to destroy wooden push-pull rod mechanical construction, if any measure should not be prepared.

I found out the exactly the same way of the Anti-vibration construction in "Nova Lily" for the FUTABA factory demonstration flight by Mr. Naruke 40 years ago.

I went out for flights early in the morning yesterday avoiding strong Sunlight in the daytime. Cloudy climate condition was helpful for me in the flying place blocking shiny Sun light.
Careful checking on head bolts on OS 40LA motor found out some loosening leading to pressure leak, remembering the starting scenery, there was not a little difficulty to continue the initial rotation even in cold starting stage. Again I felt the necessity of seriously periodical inspections on even a tiny model airplane. Thought I the lack of pressure, it must have brought by some wear on the piston and the cylinder walls, so I had determined to replace motors into 46LA, but the boring cause was just loosening of cylinder head bolts.
The original carburetor on 46LA is replaced into 20C type(probably for car use) with big throat in addition with fuel nozzle narrowing mechanism in accordance with throttle valve operation. As the main fuel nipple on the carburetor is interrupted by the 3 dimensional fuel hose line if it is assembled together on 46LA, the crank case is ground a bit for fitting. This motor would play and exert a good performance on Tetra Spitfire 5B Mk2 with it's lighter weight 272gr. Graupner wide blade 11,5 * 5,0 propeller would be invited in order to make the speed of the maneuver flight up and down monotonous with the braking effect of larger diameter and thinner pitch inclination propeller.

Now, it's the hottest season with the annual festival in OSAKA today, Tenjin Matsuri, and the Boats parade, Funatogyo(Shinto ritual) would be done around Tenjinbashi with 5,000 of fireworks, 1,300,000 people will come to enjoy as usual.

20 minutes saving for short-cutting led the Airliner fatal, probably, Russian missile did it! What will happen in future in Europe and Malaysia? Anyway, any dispute should be avoided using all means, we've had Killing enough! From now, we would have do consider about the most important proposition, How to break the intertwined and rusted Chains immediately. That time is coming already, isn't it?

Kyosho Sonic Acro is planned to remodel the size adopting with the pure F3A competition model extending horizontally meeting with the limited 2m by 2m square. The width of fuselage is in the size of two LiPo batteries and nose part is available to accept Belt down EPP system. In addition, cooling air way must be well considered for heated batteries and EPP motor. I might be able to take part in the preliminary competition in Kansai area next year if it goes well, though some desperate efforts would be required to overcome all the problem, all higher barriers that I have never been experienced. As the first step for my revival in R/C field, I'm going to participate in the Sportsman class Test Meeting this Autumn at Awaji Island. I'll have a good time to meet with old intimate friends they all have been continuing this hobby for 30 years that I was absent from it.

Hottest climate condition and #10 Typhoon would prevent me from going out for flight training on these holidays, so, all of the free time would be spent for preparing next airplanes, mainly for EPP powered planes. Also, EPP equipments have arrived at my hand yesterday. I've determined that my conception should be changed from some ancient old principle into the latest sophisticated equipment. Significant changes in aircraft structure, burdening LiPo battery and preparing for cooling air ways, would be done on my future airplanes for the contests. I have not a little confidence in EPP field, because I did well in the good old days of gas model period. Motor control and speed control would be much easier than before if I invite EPP system, not a few friend tells me so who is familiar with EPP planes.
Petite form of Blush-Less motor give me some freedom to set them without tough efforts, no exhaust pipe way and eliminating the throttle control servo, setting up of remodeling fans are waiting for me.

Why did it enter the battle area in Ukraine, Malaysia airliner was a good prey for a land to air missile? Stay away from the actual combat zone without any argument, it's a common sense, no? Soldiers in wartime are completely different from an ordinary human being in peace, in ultimately crazy emotional condition. The Missile operator on the ground cannot tell an ordinary Airliner from a destructive Bomber from thousands feet distance.
General public should wait until the fight ends however longer the period might be, though it has been continuing over 3,000 years in the Middle East. Combat motivation might be an innate property programmed in our Genome? Whatever thing will do, differences make a fight, Religion, Race, Color of skin, Land areas border line, starvation and another self-righteous desires. As our history tells, violence by someone will not disappear so long as the human race survives on the Earth.