OMP edge prop change=tailslides.
I've been running the Zinger 11 x 4 on my Irvine .53 and my OS 50 sx... Man do I love them.... Really getting better throttle response and better spool up..... I'm a little afraid I might be over reving my engines... Maybe I should tack them? Ahh hell.... I'm having sooo much fun now, it'll be worth lunching a few engines.....
I'm running 10% nitro with 20% oil just to be safe....