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YS Engines
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YS Engines - YS 63FZ

The 63 likes a prop which turns between 10,500 and 11,000 RPM. It has worked well for us in both a Kyosho Majestic and CAP 232 with a 12x7 APC prop turning at 10,500 on YS 20/20 fuel. Please look at the PDF file on the YS63FZ from Tony in the UK. R/C Modeler Magazine engine guru Clarence Lee has tested the 63 for an upcoming product review and is very impressed by it's performance. One of his comments was that this engine topped the other brands of engine in this size category by 800 to 1000 RPM. Watch for his review. Check with your favorite hobby supplier for price and availability.

Specifications
RPM Range:     2,000 to 12,000 RPM Prop Sizes:       12 X 7 to 13 X 6 Weight:            17.9 oz.	YS 63FZ