Quickie(Q1) Onan Engine Spec's? [2 Attachments]
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I own one of those. Trust it so much I built my plane around the 447 that you know I have not flown behind.
I have not seen a dyno curve for the Onan but expect it has a fairly wide sweet spot but that is far from proven.
My decision to change to the 447 was due to the Onan's total lack of reliability under load, especially loads at or beyond the rated power.
As with discussions with you in the past I do not feel a 447 is the right motor as well to fly behind especially with a clean plane that will be in trailing throttle allot during descents.
The Onan was pulling head studs especially with the shaved heads. I am not sure if problems went beyond that since back in the '80s word did not travel very fast if there were "issues".
An engine with the longer strokes might have been of interest had we known of them at the time but to me they were still of too little power for those of us out east on shorter runways.
At 05:32 AM 12/1/2018, you wrote: