2danglico
Joined: 08 Sep 2008
Posts: 17
Location: Seneca SC
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 Posted: Mon Sep 22, 2008 3:29 am Post subject: 447 Tuning |
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Hey Guys,
I appreciate the feedback. I've put a couple hours on her since my last post and noticed these things. Climb out rpm is 5800-6000, level flight is 6200. Prop is 66 inches and 30 degrees pitch. CHT is 260 front, 290 rear. EGT's are good, after dropping my needle, moving around between 900 and 1100 degrees depending on throttle position. I never revisit WOT after climb out, so I was kinda in the dark as to my max RPM at level flight. I throttle back to 4750 RPM and this gives me 'bout 50mph AIS, my comfy cruise speed. I'll give R. Smith a call and see what his take is. My friends at the airpark say leave well enough alone. But I think it has to do with my Kolb embarrassing their planes on climb out. They all are running 503 DC/DI and none are showing CHT below 350. If my Rotax manual didn't say 330 to 425 degrees, I'd be a happy camper. Even if there's a little more power to be had at 6500 rpm. I feel my climb outs are safe. I can hold it at 50 mph and I'm getting up in a hurry. -John
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