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Being gaining momentum, did I it, exactly the same manner was done on another Medallion 15 also obtained from Yahoo Auction. Needle valve system was my own modified one like a former Medallion, 10 gr weight reduction is worth doing for relatively smaller model airplane. Generally, main needle angular position does not change so apparently if the break-in procedure had been done adequately and both the propeller and the fuel are not changed into another ones. So, the needle valve I have applied here is not always inconvenient modification by a selfish user, any way the result of these modified LM Cox Medallion 15 R/C would be reported very soon

Light metallic material casting has processed yesterday and fit in position to set up OS carburetor as shown in the photos. Thanks to the precision casting technology, it fit as desired. Thin paper would be inserted on 4 fitting positions, between crank case and carburetor holder F/R, crank case and carburetor and rear cover plate.
Though I planned to make use of the original needle valve assembly set in 25LA, 10gr weight led me to set a needle at the conventional position as a photo. 2mm pai bis was utilized with sharpening on tip. Air leakage checking would be done on the test running test. Tornado 9-5 or 8-6 propeller would be used for the test running. Depending on the power at that time, one more Schnurle port would be added as TeeDee model by grinding the internal surface of residual position on the cylinder. Compression ratio might be changed by making the head bottom surface down?
This motor, LM Cox 15 Medallion R/C would be mounted on "Super Tiger 102" single channel control model designed by Jumpei Kato brother of former Champ Masahiro Kato.