YS FZ63

My third run of this swap meet find. Between this and the first run I have pulled the fuel regulator and cleaned it. I run APC 11x8. OS F plug, and Cool Power 10%
Links to review article:
sceptreflight.com/Model%20Eng...
Link to Engine Manuals:
drive.google.com/drive/folder...
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[@luisgarza2036]

Of course it runs pretty well on 10% nitro, it's a little more finicky to dial in but it works really good, well it's a YS!

[@keithgoode9726]

What a firey little beast!

[@austinsmith9413]

I have a ys63, unfortunately haven't run it as much as I would like either. Once that tune is dialed, the throttle response and power is👌

[@FMo01]

11580 rpm with an 11x8 propeller, which corresponds to a power output of approximately 1000 watts. That is as much power as a 2-stroke methanol engine with this displacement provides, very impressive.

[@user-sf1ob2yd2t]

Sounds mighty fine!

[@KariJari-kn8yr]

Such a cool little piece of art! That rpm is on 2 stroke level.

[@bilbag911]

Sorry, but that "2" identifies a 2 blade prop, NOT a 2 stroke engine...

[@KariJari-kn8yr]

@@bilbag911 I mean that 4 stroke revs as high as a 2 stroke

[@Irvine7214x6apc]

Despite the odd difficulty with tuning here and there (I suspect the fuel as you rightly mentioned) I'd say that's quite a successful run. Most amazing is the snap-quick throttle response, excellent engine, keep 'em coming David. Regards Harry

[@b.w.oostdam8875]

RUns fine, and is a real-world situation. Idle is quite high but what top-end rpm for a four-stroke. That was quite surprising. Thank you for the video.

[@Caninaracingatodovapor]

ty

[@marcobuonavita2757]

VIDEO INTERESSANTE GRAZIE

[@markoreilly3414]

FZ 63 are a mighty little engine ! Once you have a chance to play around with it, you'll be surprised how bigger Prop they'll pull ! Nice buying

[@stevebarr9604]

How many check valves does that one use, I've got to have 2 with my ys 120 !

[@dmrcflyr2]

Only one is required on this per the instruction manual. Should only be one on yours too according to this manual. drive.google.com/drive/folders/1URXkXJelMdUuQOT0Ot06oKOGwDz_wTK5

[@markcole9933]

What rpms are you getting with your 120