For the motor you stated TR SK 3530, this prop is to thin. you need a thicker prop as you will loose power at high RPM (I know this as that is the prop I used on my 3530 motor). APC prop that is used for nitro is a much better choice. My plane climbs unlimited now.
2 thumbs up!
Excellent balanced screw! Worth paragliding and motor TR 35-42C 1100kv Good!