flyrotary@lancaironline.net Mailing List Archive

Bill,

I went back and looked at Don's previous post. Saw reference to climb performance, RPMs, and temps, but no speed numbers. Has he previously reported cruise speeds over 200? Last post from him that I saw with any speed numbers reported 174MPH IAS at 8000. If he's over 200 now, wow those are good numbers!

Mike Wills

From: Bill Bradburry

Sent: Wednesday, March 24, 2010 9:15 PM

To: Rotary motors in aircraft

Subject: [FlyRotary] Re: Turbo Planning

Those are the best numbers I have seen with anyone with a Renesis so far. In fact, I have not heard of numbers that good on any 13B. Don is getting over 200 MPH with a cruise prop and climbing at over 1400 fpm with it. The only way he is going to do better is either with an electric CS prop and/or turbo. If he shaves the prop off to say, 74”, he will get a couple hundred more rpm, but will probably lose in total thrust. Diameter is a big determiner in thrust.

I would like more pictures of Dons intake and exhaust!

Bill B

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al Gietzen
Sent: Wednesday, March 24, 2010 3:05 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Turbo Planning

1. When I read your stats in your first paragraph, the first thought that

comes to mind is that there is too much prop.

Ditto.

Al G