I'm using YS 63S with stock muffler with this plane. It is amazing plane. All air-surface servos are Hitec HS 5245MG Mini digitals and the throttle is HS85MG . I have ironed all parts before assembling and add clear nail polish all the film borders for fuel problems.

All parts fits perfectly ,I used two screws for the canopy mounting for extra flight security.Especially on snaps, spins etc....

The overall flying weight is 2450 gr. Fuel tank is Kavan 350cc. and mounted by the velcro hook and loop tape.

14x4W and 13x8 used in the setup session. For 3D it should be 14x4W APC. For pattern it should be 13x6 to 13x8

I have seen one disadvantage on this design. The mounting and glueing the stab and then assembling the hinges....The elevator halves can be two independent parts...Can be use two micro metal gear servos on the both elevator halves. For example ,HS 85MG or HS 5085MG micro digitals can use both elevator sides.It can be more accurate and easy adjustable...The weight of the two servos is the approx. the same with the standard metal gear servo...If I will make a new one will make like this...

Best Regards

Mehmet ARCASOY / TURKEY