Perhaps the greatest point has been missed. Number one, I initially stated:
Originally Posted by
GallopingGhostler
[...] With today's engines, there's nothing wrong with the sport plain bearing ones, even though they produce a tad less power than the more expensive ball bearing ones. Most get into problems when they run the engines in a too lean of a condition, so lubrication is reduced and engine runs hot, or runs with excessive load from an oversized or overpitched prop. Older cross scavenge baffle piston engines more or less have a power band that peaks at a lower rpm, require larger diameter or larger pitched props over the Schneurles. Over time, a person learns what or what not to do with particular engines. Even that $79 engine can be very satisfying, provided that it is the right size for a particular aircraft, is properly broke in and properly propped.
The focus immediately became the MDS and not the rest of what I stated. A beginner could even have problems even with the so called premium engines, because 1) it could be slightly tighter IAW manufacturing tolerances, requiring a greater run in duration to wear in to optimal fit. 2) Ruined due to an overlean run. 3) Improper or less optimal tank placement, making fuel flow more critical. 4) Inadequate isolation causing tank vibration and foaming for fuel feed. 5) Length of fuel lines and routing. 6) Mixture settings. 7) and etc.
The best thing a beginning engine flier could do is to hook with a local RC club and get a mentor to help. Let that mentor help with engine selection, helping with the build, and even flying if lacking experience. The OP was familiar with cars but not with planes. This would be the best overall thing in having a successful RC experience to build on future flight experiences.
