I have switched from the saito .72 to .82, no mods required, direct bolt in. definately worth the expense. with pro zinger 14x6 with hover at less than half throttle with true unlimited verticle and now has the power to knife edge loop. balances with no added weight at 5lbs 5oz. i am finally content with the performance. tried apc 14/6, but the engine can swing the much lighter pro zinger with more authority and apc required adding tailweight to get the cg.

What a fanboi....cody cody cody....... WE GET IT, KID! funtana is the best airplane ever and the Saito 91 is the best engine ever. Give it a rest. Don't proselytize, it's just a hobby, for geeks and retirees.

A little posting pun lol! Great Hobbies had the Saito and YS backordered, so I took what was in stock. That would be the OS Ultimate 70. The Ultimate engine for the Funtana? All the pun aside, it's a piece of junk. I runs so hot (set excessive rich needle setting) that the fuel boils in the pump LOL! A little late research found anyone who bought the motor is having the same trouble. I don't think there's a single Ultimate 70 out there working. I'm an old loyal OS fan, but after buying a 120SP and now this paperweight, I think not. Fooled twice, that sucks. I hope the Saito is in stock...


Shaun Bell

I have the os 91 fx in funtana 40 and wow with a 15 -4w it rockets out of a hover. I have the os 160 fx in a funtana 90 havent flown yet the os 91 is under powerd ill keep you posted on the 160 fx..