Kinebohのブログ一覧

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!

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 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 with a slight modification safe. 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.