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Old 10-05-2014 | 02:29 PM
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kenh3497
 
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From: Rockwell, IA
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Originally Posted by drac1
I never had a YS 120 four stroke, but may be OK. If you have one lying around I would give it a go. A better option would be a DZ140 or 160. The DZ160 is smoother than the 140, but it would depend on prop clearance.
If it were me, I would go for the DZ160.

I wouldn't even consider the OS 155, YS DZ's are far superior in performance. The 140 will run rings around it, but the 160 would be a great engine for this plane.
Taking a closer look at the specs I think the YS120 would fly the plane BUT is might not be a satisfying experience. It would pull the plane through the basic loops and rolls but vertical performance would be WAY down.

Ken
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