Engines .46 AX
can I say about O.S. I started my hobby with an O.S. .46SF in
1989 and I still have that same engine (still runs too!).
the instructions on break-in and you will have a reliable engine no
problem. You can use an OS #8 plug and get VERY good
out of it. I have sometimes taken a Heli Enya #3 plug and
gallons of Heli use, put it into an OS .46 and let it be.
run the OS too lean and it will last a long time. Don't forget to oil
it for storage. Many people don't do this and the bearings
over time. Close that throttle opening when not flying too.
my 40-50 sized ARF, I'll use one of two OS .46AX engines I have in it.