Pepe J

My Feedback: (2)

OS FS 120 Four Stroke (Not a Surpass)

15% Nitro.
20% Oil (18% Syn. 2% Cas.)
OS F-Plug.
8 deg C./ 46 deg F. 71% Hum.
100' Alt.
MAS 16 x 6
8800 RPM - 1500 Rpm idle

I've read a thread or two where the original 120's lacked power, I beg to differ! They just need a little muffler work.

dave_anderson

My Feedback: (47)

What size of tank are you using and how much flight time are you guys getting? I have a 20oz. on my Cap with the 160FX, but I land with it half full. THAT'S EXTRA WEIGHT!!!! Anyone using a 16oz. tank?

Oh, and I just got an onboard ignition system for my 1.60FX just as added insurance.

Dave

Pepe J

My Feedback: (2)

Dave,

I am using a 16 oz tank and this engine (120) will run for a good 20 min. flying 15 min. flights no problem.

Happy Fly'n....

JimTrainor

... another oldy:

Surpass 120 I
10% Cool Power fuel
100% humidity, 20'ish degree C
F plug
~1000 ASL

15x10 Master Airscrew prop, 7800 RPM

mar345

OS 120 Surpass II
10% fuel
400 ft ASL
90 deg.
60% humidity
MA Classic 16-8 8500 rpm
MA Classic 18-6 7400 rpm
Top Flight 18-6 7600 rpm

For 1/4 scale Monocoupe