Hey, I'm relatively new to the sport of R/C flying (only been flying a year), and I just recently bought a new Aresti 40 and a O.S. .46 FX. I've read on the forums that the manual for the 46 gives incorrect instructions for breaking in the engine. Is this true? and if it isn't, what is the proper way to break in the engine?

Thanks a lot,
Karl

Scroll back a page or two in this forum and you will get all the info you ever wanted on this topic!

There are a lot of opinions on this. one fo my favorites is to heat the engine with a hot air gun to expand the cylinder before you start it or even flip the prop over for the first time. i always do that for the first couple starts now.

Put a few drops of castor in the carb and cylinder before first start.

Add castor to the fuel (i use 2or 4 ounces per gallon) this helps protect against heat from lean runs.


some folks suggest running only a minute at a time allowing the engine to cool so the cylinder, head and sleeve can expand and contract and get set into position.

if you don't do it exactly right, guess what, its probably going to be just fine anyway, so don't let it worry you. so long as you don't overheat it too badly its gonna work just fine.

Try doing a search on break in. there is tons to read about it.

Ok, thanks for the advice. Another question: What exactly does running in an engine do?

Thanks
--
Karl

xSkipplet,

Please read the messages in this thread:

http://www.rcuniverse.com/showthread...59&forumid=145

The instructions in the OS manual ARE mistaken.

There are good inputs here too:

http://www.rcuniverse.com/showthread...43&forumid=145

After many FX and FP engines peeled their Nickel coated sleeves, OS engineered a Copper-Nickel, two stage, plating process for the sleeve, to survive their own, WRONG, break-in procedure.

There is a good chance it will survive, but your engine will be in better, broken-in condition, if you do it right in the first place.

Sincerely,,