nevadawalrus wrote:...If you were to check rpm on a brand new mower the factorys generally have them set even lower. The shop I worked for sold Toro, Honda and Snapper mowers and every one of them was a good 50 to 100 rpm slower then the 3200 I adapted as my standard on 21" decks...
nevadawalrus wrote:Those numbers sound right. The full government recomendation suggests setting approx 200 rpm below to compensate for governor lag time, so for simple rounding off I adapted 3200 rpm when these specs first became law. If you were to check rpm on a brand new mower the factories generally have them set even lower. The shop I worked for sold Toro, Honda and Snapper mowers, and every one of them was a good 50 to 100 rpm slower than the 3200 I adapted as my standard on 21" decks, so when servicing a new sale, I was always cranking them up from the factory setting. Honda's I would go to 3300 rpm because the quality of their governor system meant there was less lag time when passing from a heavy cut to concrete, they won't rev up as much as other engines before the governor caught it and brought it back down.
Back in the early 80's when the safety regs came into effect, most of us only had vibra tachs and rounding down to make sure we didn't violate safety standards this round down made sense to me. Today most shops use electric tachs which make more precise settings easy but even with the electric tach I never changed from my old habits. I saw no logic in changing my habits when the factory settings were so slow.
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