RCU Forums - View Single Post - 4 stroke or 2 stroke what works better for 3D flying?
Old 12-15-2013, 10:26 PM
  #12  
ameyam
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Wait, I can give you firsthand info on that fs91. 14x4apc is good but not too authority for that engine. A 15x4 is too heavy. Try a 14x6, its best combination of funfly & sports

Ameyam