No engine manufacturer suggests rich running during break in? Not OS?

You obviously haven't read the manuals--yet you subscribe to that very theory on breaking the engine in.

Well, here's a direct quote from the 46AX manual--straight from the OS website.

Install the engine with the propeller intended for
your model. Open the needle-valve to the advised
starting setting and start the engine. If the engine
stops when the glow plug battery disconnected,
open the needle-valve to the point where the engine
does not stop.Run the engine for one minute
with the throttle fully open, but with the needlevalve
adjusted for rich, slow !QUOT!four-cycle!QUOT!operation.

Thats an ABC engine, and the manual specifically tells you to run it !QUOT!four-cycle!QUOT! rich for 1 minute upon initial start-up. Are you sure your reading the manuals?

Now, here's a direct quote for the 120AX, a ringed engine:

Install the engine with the propeller intended
for your model. Open the needle-valve to the
advised starting setting and start the engine.
If the engine stops when the glow plug
battery is disconnected, open the needlevalve
to the point where the engine does not
stop.Run the engine for one minute with the
throttle fully open, but with the needle-valve
adjusted for rich, slow !QUOT!four-cycle!QUOT!operation.

Same thing. Run it 4-stroke rich for a minute.

I don't care what the manual says. I trust guys like W. Robbinson, FBD, and W8YE more than I trust a corporate giant looking to cover their butts on warranty.

Here's a direct quote from a ST engine manual:

The engine should be running at full throttle, but running somewhat
rough, with a lot of fuel/oil being discharged from the muffler. This is
because the engine is running in a very rich condition–that is, more than
enough fuel is running through the engine than is needed. Run the
engine at this setting for at least five minutes.

Sounds like 4-stroking rich to me.

So, lets wrap this up:
I pointed out that the practice of manufacturers telling us to break our engines in excessively rich is simply to cover their own butt against warranty claims. It is not necessary to run an excessively engine rich, and in fact it can hurt the engines long term performance.

You countered my statement by claiming that you know of no engine manufacturer who recommends this overly rich break in.

And I just gave you 3 perfect examples of manufacturers doing just exactly that.

loughbd:
I'm happy that you've had good luck with your engines by running then in according to the manual--although I think you may need to brush up on those procedures, because it appears you've forgotten just exactly how the manufacturers tell us to do the break in.

But, myself, and a lot of guys put considerable effort into educating new hobbyists on the PROPER way to break in a glow engine. When you come into the forums with a combative attitude, and act like we're all stupid for not just doing it according to the manufacturers recommendations, it doesn't help. We want people to have fun, and we want them to break their engines in the right way and have good success with the hobby.

The generally poor attitude in your tone is completely counter-productive to the education process for these newbies. Because, in fact, the manufacturers are NOT giving us the best advice here. If you want to follow the manual--then good. Have fun. But don't post inflammatory remarks that hint at ignorance on the part of the rest of us. It doesn't help the newbie, and your, well, your just wrong.