Doing it in the middle of the pit area of your local flying field is a good way to annoy people as well.
For REAL![>:]
They are not similar, the .50SX is a ringed engine, the .46AX is not...
There you go...
I just got a new OS .46 AX engine and have broken it in or run it in. I followed the directions in the user manual.
You mean they come with manuals?
It all depends on the piston and cylinder matirial on the suggested break in process. I usually use the manufacturer's suggested meathod of breakin.
Now your talkin!
Jim