ORIGINAL: downunder
Yet not long ago you'd have been telling him it needs new rings. Remember when you used to insist that a ringed engine had a life of 75 hours when I, and others, were telling you they'd go for hundreds of hours?
Brian,
Although I am capable of giving good, knowledgeable advice to many modelers, I keep my eyes and ears open and sometimes modify my views.
My estimate of 50 hours for ring-life and for ABN setups was from Harry Higley's books...
There was another thread here that estimated an average engine life of 13-14 hours...
Obviously, when an engine is perfectly maintained, even more sensitive setups will live much longer than 50 hours.
When, however, one tries to extract every last RPM from his engine, using the leanest possible needle setting and the minimal percentage of oil, even 13 hours may prove to be a gross over-estimate.
If someone is an imbecile and abusive to his engine, 13 minutes could be a more accurate...