Rusty memory

Had I an opportunity to talk with a long lasting intimate friend in the evening yesterday about my professional theoretical subject that exists in a deeper memory in my brain cortex piled about 50 years ago. Then I had realized to have some situation to talk about some subject in my own scientific and specific field. LCD in front of our PC is regarded as a gate to International Library and almost of the necessary information could be obtained in some Web sites, so human communications each other are not always required to do that, finding out myself to have lost some capability to talk and speak function establishing my own theoretical construction. I deeply feel the necessity to talk about our professional piled memory with some friend to remember and align my cortex.

GW 30cc Acro into P15 pattern model

The vertical tail of Gold Wing 30 cc V3 series was operated in two pieces following my ordinary manner in order to eliminate the poisoning discrepancy, twisted fuselage in addition to distorted vertical stabilizer to the right side. The adjusting reference is the main wing connecting carbon rod. For extending the tail moment, the horizontal stabilizer would be set at 75 mm posterior position, this is an indispensable arrangement to modify the innate acrobatic model into my specific purpose, P15 maneuver stunt performance, because too short tail moment arm causes some unstability that is inconvenient for drawing F3A patterns in the sky. Basic construction of GW 30 cc acro model is almost the same as popular recent P15 stunt models, except the finished weight. I wonder if I could carry out to do that within 5 kgr? The limited weight must be cleared at any rate, otherwise, it would be far impossible to be an applicant of F3A competitions in future.

Gas power vs Electric motor power?

Too much concerns about the bad habits scatters my concentration what to do first, CPU in my cortex is almost overheated. My first EP experience would be done on Gold Wing 30 cc acro airplane. Before starting this creation, some fundamental distortions depending on the rough construction in China manufacture. Because of cheapest price that I had paid, no complaint about any mal-construction should not be given a voice, just correct by myself silently on all the discrepancy. Ugly distorted vertical stabilizer twisting to the right side must be turned back by cutting it at the centric line that is exactly the same as the method done on the main wings of China made ARF models. It goes without writing that the fallen vertical stabilizer causes some strange bad habit especially on out side loop maneuver, so this kind of primitive misconstruction must be fairly corrected at any efforts.
Modified Majestic is stopped because of the ambivalence on power source selection, GP or EP? If 4 cell driving is insisted because of battery weight barrier problem, some adequate motor must be prepared, Futaba motor or OS?

Fantastic EP F3A field

The opportunity to come across with the scenery to see the P15 pattern flown by one of a seed flyer powered by EP obliged me to enter into EP field regardless of my own preference. Now, direct driving motor is developing to meet with the prevailing system constructed with cogged belt reduction mechanism. The flight was nothing but the same as that direct driven system on former champion's old model. Flying with such kind of higher person, my skill to do that makes progress, because the developing state-of-the-art technology shown actually in front of me by the manufactures engineers deeply inspire my motivation to get into the brilliant EP field.

Consideration

Because OS 46LA motor stops when the fuel tank becomes empty, but, about 3 cc fuel remains and I have realized that the fuel tank setting position is not adequate, rear part higher than front that was done by the former owner of this Yoshioka Pegasus ST also builder of this. I did to set it in the correct position with a bit rear part down, this kind of correction might be a trifle one, but some piled trifles are not always trifle, but great.

I'm changing my planning from Gas power to Electric power on the modified Majestic originally designed by a French World champion few years ago. Though I have Futaba highest EP motor FMA-5065 KV300 and ESC MC9100A Opto, this equipment might be over powered for Majestic and the lower class EP might be better with 100gr lighter weight. Deeper consideration would be done on this point.

Making Progress

It was fine and the best day for R/C flight yesterday. Kyosho Sukhoi 31 40, Yoshioka Pegasus ST and Tetra Rookie 20 were brought to the flying place at Iga Ueno in Mie prefecture, several problems were found in them promptly.
Sukhoi 31:
Too much elevator area for acrobatic purpose causes too much sensitive reaction reading to Auto-rotation phenomena, leveled rudder causes Knife-edge downing direction in both right and left flights, 240cc fuel tank for 40 motor fuel consumption is too small for YS 60SR motor, actually it caused motor stop because of lack of fuel supply and it fell down it too complicated bush with ground slope, not a little effort was required to pick it up. It was nothing but a the attitude for a beginners, I'm shame so much.
Pegasus ST:
Thanks to applying some adequate balancing wing weight at the tip of left wing, the reactions while maneuvers became obedient so much, this plane would be useful to train myself for light weight conditioned airplane controlling. The rubber sealing cap on the fuel tank should be replaced ASAP, curing and alteration causes peeling and the pieces causes some clogging in fuel line especially in fuel filter mesh.
Rookie 20:
Lack of tightening of the rubber sealing cap at center position caused pressure and fuel leak and the receiver box was drenched with fuel oil, it would be processed to degreasing procedure, just troublesome so much. Modified throttle fuel refining portion caused caught phenomena at lowest throttle position leading to unstable motor lowest rotational stability, it should be completed on slipping surface finish.

SXE10 TOYOTA Altezza:
By adapting the front total total toe vector direction with the actual rear total toe vector direction, it goes straight incredibly with the least rudder adjusting at the steering centric position reding to the least driving nerve tire. But the innate wondering bad habit of Altezza remains, that is mainly caused by over compliance on suspension lateral arm hinge bushes on both front and rear. Just it is caused by the lack of efforts with packing in by the TOYOTA factory engineers.

11AD Air-cooled VW Super Beetle:
I have a conclusion that the slight mal-rotation on the left rear wheel is caused by the differential side bearing, VW shop Flat4  shows the replacement bearing size, outer, inner and height, 68 41 19 by German made, but as for my wondering, the size is not found in the web site including Japanese companies made, instead 68 40 19 size is available, how come? I guess, the popular size should be the correct?

4 blade propeller

2 pieces of 10-6 Graupner Super Nylon propeller would be put on YS 60SR motor as an experimental trial tomorrow. The blade width and thickness of 2 blades prop are both far larger than APC 4 blade prop if compared. Narrower and thin construction would gain more motor rotation, but on the mechanical efficiency, more actual experiment would be required to know the effective road nP15 maneuver would be, 2 cycle motor with tuned silencer.