Originally posted by rodneybarrett
We also discussed what it really buys us in the RC world since our engines work off of taper. We kinda concluded that yes, the piston may be better than a typical cast one but the sleeve is still the same so you might not gain that much of an advantage.
Who knows, we could be way off base. maybe someone can confirm or discredit it.
From our expirience, piston material is one of the most important element in engine performance. Yes, sleeve material is important too, but I personaly preferd to put in front of everything Piston material.
I am sure you saw already that most of the latest engines ( in RC cars) are used Brass sleeves and only one thing is realy changing is Piston material ( I am not talking about latest work from Novas and Sirio on AAC).
From thousands experiments in Former Soviet Union was found, much better result (performance and reliabilty) are comming from not brass, but from BRB and AAC. As I explaned in some other thread, there are some realy "hot" disadvantages of AAC on particular engine' arhitecture.
So to stay on low cost of manufacturing, the best way is regular brass for sleeves, but the best results been done on BRB so far.
I am not familiar with real engine manufacturing, but I am sure it is realy different aplication and not everything may be just small things can be apply to our engines.
No words about technology of casting pistons
