McCOY 29 NOS

Golden age historical motor, McCOY 29 could be obtained without any bidding competition in Yahoo Auction at relatively cheapest price yesterday. Careful inspection proved that this motor has not any history of operation and any irreversible defect was not observed. In spite of long period of time after production, new condition has been maintained most unlikely.
Now, no problem exists to set her on Hal deBolt's "All American Senior" stunt model except a specific muffler setting adapter and Center of Gravity position adjustment.
I'll dream tonight flying U/C All American model with this Red Head McCOY 29 motor. The fuselage of her has been cut out from 3 mm balsa sheet already, let's proceed now!

L.M.Cox carburetor holder

Discreetly did I make up carburetor holders for L.M. Cox Medallion 15 & Tee Dee 09 for transforming throttle valve equipping R/C use. Shaft rotary intake system in these motors makes it possible if throttle valve might be positioned at the points. ENYA throttles are utilized for the purposes because of air flow adjusting screws in slow condition and their smaller shape and weight. Precision Lost-Wax Casting method is invited as before. Also, relatively big splay bar in these ENYA throttle rotating valves make it easier to adjust the adequate air flow amount at highest speed rpm, to put the throat area at the point of their suction capability.  I know it has much to do with the diameter of muffler end point diameter,not so easy to know but interesting. As obtained I a sophisticated device as shown the other day, some accurate datum sampling and analysis would be performed soon. I'm looking forward to test and check the condition with datum analysis.

OPS ULSUS 60 RCA

OPS 60 URSUS RCA motor was obtained from Yahoo Auction as usual, at extraordinary cheap price the other day. It looked like a typically worn out  junk motor, but it has no history of operation, with virgin P/C, tight and alive crank shaft bearings with no lusting internal construction, but with dusty head and cases, clogged Perry carburetor, distorted main needle valve, no other irreversible defect was observed, all of the inconvenience were corrected into original condition as a matter of fact. Also, ENYA 60-3B muffler was set in position safe with a slight modification. A bit earlier exhaust timing would allow a Tuned Pipe if I desire.
Crafts in 1970's like this URSUS motor are manufactured with some keen sense by skilfully excellent craftsmanship especially in the fitting between ABC piston and cylinder in addition to the stout and reliable construction. So, this motor would last me through my life or more over, if it would not be operated in critical condition like an airplane falling down accident or being in too lean fuel mixture.
This  OPS motor deceased and thrown away and forgotten for long period of time would be put into the sky by myself very soon like a Phoenix.
I recommend this motor with Schnurle scavenging combustion system as one of the best motor in the world even if compared with any other recent 60 motors.

Pilot Ace-B completed

Long lasting fabrication of Pilot Ace B has completed the other day.
The power source was changed from Enya 29 -4B to OS 32 FX at the last minute, because of a simple reason that the latter was obtained from Yahoo Auction at 1700 yen, very cheep don't you think?
The arrived OS 32  was dusty and clogged as usual, main needle valve was lost including broken holding stay bar connected with a rear back plate, plate was alive. I recognized the motor had been thrown away after the first flight accident falling down. The plug filament is clean like new, no piled carbon on the piston top surface was recognized, crank supporting bearings are alive without any backlash.
After cleaning and reforming the broken corner of destroyed needle supporting arm on rear cover plate, reassembled I the motor. Of course careful checking of distortion in the crank case and in the crank shaft was done before that.
Also, a new 31 H carburetor in my junk box was applied on the intake hall replacing the original one that has no main needle valve.
This miserable 32 motor used by some layman user and being forgotten for long time would survive like a phoenix, I'm sure that and have good confidence to pull out it's potentials because I have enough experience to get accustomed to OS 32 motor on a former model OS 32 F.

ASO 86th Regular Concert

Last Sunday was the day to enjoy myself utmost with the Classic Concert played by Ashiya Symphony Orchestra as the 86th Regular Concerts held twice a year at Kansai area. Their skill has remarkably improved year by year and it's capability is never second to some professional orchestras. Melody, rhythm and harmony were well balanced and they contributed to passionate sound at all. Every instrument was discerned independently, it was unusual matter. New faces in the players were recognized, it is a good notice so much.
I'm looking forward next one, though only a few days have passed since the last one now.

The program were followings.

G. Bizet: L' Arlecienne Suit No.1

C. Debussy: La Mer, trois esquisses symphoniques

C. Franck: Symphony in D minor

PILOT Ace Type B

Also PILOT Ace Type B is now under construction, that is the second generation of Ace series, cutting out of its fuselage is over and the stabilizer is almost fabricated.
Power source is an old designed ENYA 29 4B with plane crank shaft bearing, lighter one, I'm released from troublesome ball bearing maintenance. As I have never seen this motor actually under some perfect condition in the field, I dare choose this one in spite of heavier weight compared with recent high performance Shinyure scavenging lighter motors, must I pay attention on CG. Thanks to good covering film material, ORACOVER, I can proceed this kind of work freely without any stress like by Organic Solvent, Acetone.
I'm going to make use of the main wing of  TETRA ROOKIE 20 that has supreme performance with Laminar Airfoil designed by Mr. Tangiku, over 45 years ago had I some precious opportunity to fly and to enjoy Hinode Lead multi channel Radio model airplane with him at Muko Riverside in Hyogo Prefecture.

MK Star 15 & 60 motor

MK Star 15 designed by Masahiro Kato over 50 years ago is now under construction. As it isn't done from a kit but from pieces of balsa, it takes time and requires much effort. 80 % finished already, but not a few small works remain, I'm sure that it would come in time to next  Old Timer & Golden Age meeting held in coming Spring. For the power source of this model airplane, ENYA 20 with conventional cross flow scavenge would be invited, suitable or less power, probably, in case of poor power for stunt flight, OS 25LA would replace, it depends on the finished weight.

As OS 60 FSR motor appeared in Yahoo Auction I bid only at 520 yen like nothing, actually it was sold as a junk motor. After arriving to me, I knew the reason why it was sold at so lowest price, the carburetor holding screw 3,5mm hole was dead showing at the point in the picture. The former owner had bad habbit to screw in too tight all the screws even on back cover plate. All of them were loosened with heating method. Braking tightening power must have destroyed 3,5mm screw hole. Re-tapping with 4mm tools could recover the problem safe.
Crank shaft supporting front bearing was ill set, rear seal cover had not been removed and original bearing grease was left untouched. He did not understand the physical property of lubrication, just like a layman. It was lucky that the crank bearings on both side, front and rear could be usable after cleaning. Gas compression construction was not damaged.
Any way, it survived as a useful enough motor after full overhaul including carburetor.