ORIGINAL: PatternFlyer
Looks like you got an OS version mount?
EZ Beat On 50 originally came for OS 32/52. Then, Ok model added mount for YS 53. It was sold as YS version in the state.
I have all Beat On series excep the 2x2 version.
All I know is that the only thing that I had to do to mount the YS63S was to enlarge the slot for the engine on the phenolic plate. I had to move it back slightly to make the thrust washer at the right distance from the cowling.
Original design dates back to 1990. For a 20 years old design, it is more than capable as a beginner's pattern plane.
I am not sure about aileron reversal. 90 size Beat On doesn't have it.
I am looking forward to flying it.
What servos are you going to use?
Aileron: Futaba S9650
Rudder: Futaba S9252
Elevator: Futaba S3152
Throttle: Hitc HS81
Keep the weight down. For the first flight, make sure to use forward CG.
I will try my best with the weight. How much forward CG do you recommend (see photo)? Also, the exhaust can point in any direction, but the most logical seems to be straight down (up in the photo) which would also look better, but a side exit might help some in case of a gear malfunction.