Kinebohのブログ一覧

STOCK 60-3 is under construction with several modifications, upper part of fuselage on the cockpit is covered with 5 mm thickness balsa sheet accepting the shape of fuel tank situated at the Center of Gravity point.
Retractable main gear holes under the main wing are covered with 2 mm thickness balsa sheet also, in order to reinforce the jointing line thing grass fiber sheet will cover including aileron servo holes, fixed main gear made of carbon fiber would be invited.
1700 mm wing span and 50 dm2 wing area show the result, lack of power might happen if regular 60 size motor is invited even with Tuned Pipe.
Countermeasure for that inconvenience might be carried out because of less power, OS 90 FX motor is prepared. For the sake of oversized motor, main gear size should be stout enough to accept 14" size propeller.
Anyway, it is not an easy task to make up F3A stunt model to fry and to set up meeting with the competition.

Akizuki Product's STOCK 60-3 is now under construction, several modification based on the concept, weight reduction are performed on the way, fuselage reinforcement 3 mm thickness Sinaveniya is round haled in some portion, aileron is also round haled, weight reduction procedure would be done on rudder and elevator parts by means of the same manner.
As for landing gear, all the retractable gears would be eliminated in stead of fixed carbon style light weight one.
By some desperate effort for weight saving, total mass would be below 3,300 gr in dry weight.
Power source would be YS 60 FR without any bewilderment.
The lack of tank space on the CG point in the fuselage obliged me to modify the cabin space into round shape.
Fixed landing gear system eliminates the complicated retractable mechanism and 2 retract servos, also long linkage.
30 gr sophisticated FUTABA servos, model BLS173SV would be invited for all the moving parts.
An original purpose to survive my old hobby, model airplane powered by 10 cc motor would start at last.
All the inconvenience would be eliminated because of small size motors are now equipped if 10 cc motor model is invited.
So the satisfaction would be obtained from the bottom of my mind.

40 years old F3A stunt model kit, "Akizuki STOCK" is now started to start by myself, remembering my past this is the 5 th trial in total. My skill in F3A field had been nourished by this specific STOCK. As the designer Mr. Akizuki was a best leader in our flying club, so all the information could be obtained asking him directly.
This memories stunt model is very special for me, because I took part in All Japan Stunt Competition held at Utsunomiya in Tochigi Prefecture over 30 years ago.
Consequently, I would like to enjoy this model by both constructing and flying, foamed Urethane balsa planking wings are almost completed priory, only the fuselage construction task is required. The classic competition style meeting would survive again with 10 cc motor. I have enough confidence to pull out it's performance ultimately now.
Also, the representative of Hattori muffler company said, the most interesting period was that of 60 motors.
I would like to build up ASAP, and to enjoy my passed good days.

The first day of Autumn this year begins tomorrow.
I'm still waiting for it yet, more comfortable season as usual.
I could endure high temperature last year at the same place, but this year impossible to do the same, over 38 degree centigrade is above my capability in my working room.
Consequently, working tools and devices were moved to my sleeping room for a temporally evacuation.
60 class rectangular main wing was fabricated this week withdrawing in my home. Dihedral angle is zero degree with symmetric airfoil shape, recent controlling devices do not always require horizontal stability based on dihedral concept half a century ago.
47 dm2 wing area but with 13 % thickness airfoil would reveal some good maneuver performance.
45 rear exhaust motor with Tuned Pipe might be a choice as the power source, YS 45 FR, ENYA 45 CXL and OS 46 VR are applicants.