ORIGINAL: JB COMP
when I got my STS I was only in to nitros for 1 1/2 years, and that was 2nd engine I have ever broke-in and that was my first race 21, the only other engine I broke-in was a force 26 which has a bad leak, so tuning that was a pain, I just let it burn up because I didn't want to by a new carb, and I hated that engine, so I let it bit the dust and got the STS, best move I've ever made since I started with RC's.
I took my first ever engine apart when I 10 maybe just turned 11 when I took my 2.5 apart, and before then, I never did anything with cars or engines.
the 21B was not bad to break-in, its pretty easy, the break-in method inthe manual is what I used and it was basicly a heat cycle, but now I'll be using the draked method or one close to it.
Are you talking about the break in method where you run it so rich it sounds like a 4 cycle and you hold the throttle wide open? NO WAY WILL I USE THAT METHOD ON ANY OF MY ENGINES!!!!!!!!!!!!!![sm=thumbs_down.gif]