.50SX Break in prop
#2
11x6 ~ 10 , 12x6 sport
12x7 ~9 aerobatic
This engine looks exactly like my .46fx , good luck with I had a hard time not having the nose bleed on the carb.
12x7 ~9 aerobatic
This engine looks exactly like my .46fx , good luck with I had a hard time not having the nose bleed on the carb.
#4

My Feedback: (10)
I was going to use a 12x4 on OS 50SX for 3D so I just broke the engine in with the 12x4 on it. Just run it really rich at the beginning and you'll be fine. I had to lean out the low end on mine to get a nice transition from idle to full and its just now starting to bring on the power.
#5
Senior Member
My Feedback: (50)
Joined: Mar 2002
Posts: 5,405
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From: Mira Mesa, CA
A non break-in tip:
Try a Tower muffler once she is broken in- the best performance mod. for $15-
My SX is QUICKLY becoming my favorite engine, and I have/had quite a few--
Try a Tower muffler once she is broken in- the best performance mod. for $15-

My SX is QUICKLY becoming my favorite engine, and I have/had quite a few--




