ORIGINAL: controlliner
In the R/C car forums, people blame a leaky front bearing for lean runs. Well I have Two OS CVR .15's, One with a metal shielded front bearing and One with a rubber shielded bearing. Both engines run the same with the same needle settings. I don't believe in blaming front bearings for lean runs.
The car nitro forum people are obsessed with "air leaks". Any inquiry a poster makes about engine problems/tuning is almost always met with "you have an air leak, better seal it up". But then again, most of them break-in ABC type engines by letting them idle away for afew tanks of fuel.
