Got hurt!

Rotating nylon propeller on OS 25LA motor, 9by5 hit me on the tip left side ring finger yesterday, just because of lack of concentration and of making little of a small motor. This accident was the secondary one for me, the first was done by Super Tigre 46, 40 years ago on the test bench, right thumb finger at that time.

Test flight of Sukhoi Su-31 proved that the exhaust gas vibration has enough energy to destroy the construction of Super Toyoron with bias-like reinforcing fiber, any measure for this inconvenience should be considered. YS 60SR motor with earlier exhaust timing has good performance when used with Hattori tuned pipe. Sound is clear and stable at speed controlling phase. THC FS15 specific fuel for competition plays a good part of maneuver flight, 30% Nitro-Methan is not always necessary under a well pipe length adjustment, pipe-in condition.

40 Pylon Racer and 2 of OS 46 VF rear exhaust motors had been arrived at my hand. I must go ahead on F3D field also.  Combination of tuned pipe and 2 cycle speed racing motor has something different fun from another field. Controlling the exhaust gas is very interesting because it is difficult to understand.

Change

The change of atmospheric pressure pattern according to passing of the seasons invites heavy rain falls everywhere causing sediment disasters involving miserable victims. Before long, it rained so heavy cats and dogs being drenched to the skin.
40 Pylon Racer motor, OS 40 SR, Super Tigre X40 and K&B 6,5cc were already prepared at hand finishing overhaul maintenance, in addition, OS 46 VF motors would arrive tomorrow from a seller in Tochigi Pref. with 40 Pylon Racer model airplane for F3D competition. Anyway, my future direction has determined to Pylon Racing, "Livets" would be fabricated soon.

Super Tigre X40

Crank shaft supporting bearings on Super Tigre X40 were successfully removed by heating the crank case. 6001 and 607 were the standard numbers promptly. They would be replaced into Japanese made ones NSK though original ones might be useful. Just replacing bearing and cleaning thoroughly would recover it original performance. ABC cylinder sleeve is clean and shiny, no problem.

Attracted to F5D

Clogged and stuck Super Tigre X40 Pylon motor was disassembled with some effort this morning. Cylinder was tightly adhered with crank case and not a little exertion was required in the stage, also cutting off the connection of the drive shaft in combination with crank shaft required some special tool, a piston ring for 60 motor was utilized for the purpose. All the sticky material was consisted of the fuel inclusion of ricinus, castrol and it was degenerated and alternator producing odd smell. As all the moving parts are alive like new including supporting bearings, this specially fabricated Super Tiger would survive like a phoenix soon.
Also, K&B 6,5cc and OS 40 SR for Pylon have arrived obtained from YaHoo Auction, Finished 40 Pylon Racer would arrive from Tochigi Pref. tomorrow, consequently, my curiosity has some inclination to F5D Speed Pylon field recently.

Destroyed balance between nose moment and tail moment on both Sukhoi 31 and Majestic were compensated by forming some extended constructions on the mounting surfaces. Over 200gr nose weight on Sukhoi 31 would be eliminated by this arrangement and Majestic would play a good parts for F3A maneuver drawing in the sky.

Modified Majestic 1400

Extension of the wing span 14 cm and that of the fuselage 15cm permits YS 45 SR 2 cycle motor without any inconvenience on originally designed for 32 to 40 class motor, Majestic. Vulnerability of the construction on the stabilizer and rudder was compensated by lightning with making halls and reinforcement with Polyester grass fiber material. The unbreakable and durable construction on the model airplane sometimes invites unnecessary weight increase leading to spoiling of active maneuver actions. on the other hand, my way to one grade size up of originally designed bulk would produce much lighter airplane. Of course, various measures might be required and time consuming procedure as it is to modify original construction, still it is the task worth doing to me. Strength of barely and much lighter construction are the indispensable physical property for a pure competition model.

Alignment

It is not an easy task for me to reconstruct the main wings of ARF(Almost Ready to Fly) model airplane, peeling of the covering film, cutting off them in two pieces evenly like a fish cooking, putting wobbly constructions on the jig with the best precision with applying glue material in the adequate amount and holding them in the best postures eliminating any discrepancy.
Obtaining the good main wing without any distortion or skews is the key to fabricate the competition revel model airplane, also this is the fundamental requirement to win the contest awards. Desperate effort to do like this in order to eliminate any discrepancy should be rewarded surly. Good maneuver reaction would be obtained with the least modifying rudder angles.
However, adjustment and correction on the main wing construction are similar with those of wheel alignment and constructive axle geometry in the automobile that has been done those ten years.

Discord

The right side main wing of Majestic 1400 was cut in two pieces horizontal direction as usual because of inevitable discrepancy, distorted and skewed malconstruction. I have never experienced that I got the correctly assembled and fabricated main wings on both side when I bought ARF model, whenever I got that, I was obliged to do the same at least one of the wings or both of them.
Skewed main wing brings various kind of bad habit at whatever speed it might fly in any maneuver situation, so, any distortion born in the production process should be eliminated as much as we can if the airplane is used as a competition device. The more accurately the fabrication should be done, the better for competitive maneuver situation.
Also, original covering film on the wings was thoroughly peeled and removed, because, the inconvenience of covering film leading to the accident is already reported in the Web site.

Today 69 years ago we Emperor Japan accepted Potsdam Statements by the Enemy countries, yes, we were defeated completely by them, in spite of the truth of loosing WW2, NHK broad cast says it Anniversary of the End of the War?
It is nothing but a fundamental misunderstanding to say it just "The End of War", because we are not a victorious nation at all, in stead, we were defeated by US military power completely with 2 Atomic Bombs! Thanks to that strategy, we are still now in apprenticeship for US, no?

Curare 60

"Obon" holiday season has started and our relatives has already arrived to us yesterday resulting the destruction of daily peaceful calm passage of time. All the highway are fully occupied already by the passenger's cars those are turning back to their hometown now.

The dry weight of Curare 60 was measured this morning, containing with the Hattori tuned pipe at adequate length position, resulting 3,425 was the data. This Curare 60 was an original Kato Model Co. produced 40 years ago and 100% fabricated by myself and the discrepancies on fuselage, on squad stabilizer and elevators were corrected promptly and set up at adequate relating position, zero to zero attack angle between main wing and stabilizer were precisely established including another 3 dimensional positions. So, this one would be put into the sky after 40 years sleeping absence soon in the condition of burdening the most sophisticated radio equipment, FUTABA 10J or 18MZ, no apology is allowed to put the cause of any accidental reason on the business of radio function such as frequency interference. About the YS 60SR motor, no anxiety exist on the tuned pipe header length, because I have had enough datum while the actual experimental training done about 30 years ago.

TETRA Rookie-10

It is sufficient to implement it if there found any solution for the problem, I know but, the measure is often postponed for a time because of human frailties. It's very difficult to come the dimension that I had set. As a stormy day yesterday it was, long thrown away Rookie 10 was repaired to meet with the requirement for P15 maneuver pattern drawing. Center of gravity, main wing lateral balancing weight and weight reduction by replacing the servos in the fuselage, motor control, rudder and elevator from mini servos to micro ones. Also, push-pull rod guide for the critically destructive vibration prevention were formed as usual. Thanks to upper measure, total weight came to 950gr with OS 25LA bigger motor embed. This trainer's airplane would play well without being outdone if the motor works well. Change of the characteristics of fuel supply nozzle by remaking the shape of the taper ratio would play well in concert with YS fuel pressure regulator function.

Storm outside

Coming near across to Kinki area of Typhoon #11 prevents me from going out for R/C airplane flight this morning, so, I'm advocated in the management inspections of airplanes waiting for the next opportunity, on coming Thursday.
It's heavy rain outside now and no pedestrians is observed, just raining cats & dogs!

The elevator servo, rudder servo and motor speed control servos were all replaced into micro size ones from mini sizes, intending weight reduction for maneuver flight. The motor embedded on Rookie 10 has been left untouched on the way of trial fitting of YS fuel pressure regulating control valve on OS 25LA motor, the critical troublesome part is clear now, the change of the transition characteristics of the fuel nozzle narrowing construction.

Several experimental trials would make up the carburetor in perfect condition inviting with the mechanical YS fuel injection system. The smaller the model airplane should be, the more difficult to put it under perfect controlling.
This is why I do not through away a tiny smallest beginner's trainer model, TETRA Rookie 10. Even with this model, it is possible to draw the perfect patterns of P15 in the sky if it is well adjusted and maintained with the same technology as sitting in a row competition flyers.

Three times test flights of Su-31 40 gave me good information applied angles were too much if I follow the descriptions in the introduction manual, because I prefer P15 pattern maneuver flight to ordinary 3D acrobatic flight. Too short nose moment arm requires over 100gr balancing weight near the motor portion, so, Saito FA-100T twin four cycle motor with more weight or much heavier FA-120R3 radial motor might be suitable for my Su-31?

I keep this probability of changing power sources for my future interesting fun.
At my work surface, I'm thinking over about so to speak retirement, my son has some clear intention to start the change of ownership of my working place, probably it would be the beginning of next year? My life style would be changed by the new living environment no matter how I might insist to keep myself as it is now.

SXE-10 alignment & Su-31 in action

On the rear right wheel alignment and the geometric axle construction, 2mm shorter wheel base, minus 2,40 minutes of thrust angle and plus 12,40 minutes camber were firmly corrected, as matter of fact, the steering stability while straight running on the highway has remarkably improved to the rate of my own tolerance as a through life reliable partner. Double wishbone axle suspensions on 4 wheels is my favorite character in TOYOTA SXE-10 Altezza. Probably this car would be my last one though it has almost been thrown away by a member of my family who is now playing with VW Golf 7 GTI. I'm a miserable person that cannot have new car for a long time?

Sukhoi Su-31 40 supplied by KYOSHO is now under test flight, extended tail moment arm causes a critical problem on Center of Gravity, with all the invitation of YS60SR motor with tuned pipe, more nose weight is required, extension of wing span also contributes to the destruction of the aspect ratio, resulting in too short nose moment arm condition, I'm afraid the problem of the critical Physiologic phenomena, Gyro Precession? In order to know the results, more test flight would be required.
The flight yesterday with powerful 60 motor together with tuned pipe reminded me of my own good days 30 years ago.