Thanks for all the info Phil. Sent from my iPhone
> On 28 Mar 2024, at 14:33, Jeff Scott via KRnet <krnet@list.krnet.org> wrote: > > > FWIW, I was using a Prince 62"D x 66"P prop on the O-200 on my KR. IMHO, I > thought it was about as perfect of a match as one could make. Easy cruise at > 2550 rpm, but would turn up to 2750 if I wanted to run WOT. The down side to > the Prince Props at the time was the lack of leading edge protection, so it > tended to pick up rock chips and was easily damaged if you flew in heavy > rain. On the other hand, I also found it quite easy to fill and repair. > > It's difficult to compare one prop to the next, especially on a KR. Every > prop manufacturer seems to caclulate their pitch differently, and every KR > has a different drag component. I worked very hard at drag reduction on mine > over the years with some very good performance results that just weren't > there when I first started flying it. Less drag = more speed and higher rpms. > > YMMV, > > -Jeff Scott > Arkansas Ozarks > > > Sent: Wednesday, March 27, 2024 at 2:25 PM > From: "Phillip Matheson via KRnet" <krnet@list.krnet.org> > To: "KRnet" <krnet@list.krnet.org> > Cc: "Phillip Matheson" <phillipmathe...@bigpond.com> > Subject: Re: KRnet> prop size > Thanks Larry > The reason I asked, I have had all sorts of low RPM issues. I used > Thompson 60 x 70 = static 2100 wot 2400 > Catto 60x 70 = 2300 and 2500 ( still the best prop) > APP 69x 68 using now 2300 and 2500 if I drop the nose > Any one have any better choices I would love to hear. But of course I can’t > keep buying props. > So now just putting time on the engine and finishing phase one testing time > Phil > Sent from my iPhone > > On 28 Mar 2024, at 00:12, Larry Flesner via KRnet <krnet@list.krnet.org> > wrote: > > > > > On 3/27/2024 12:03 AM, phillipmatheson--- via KRnet wrote: > Hi Larry old friend, hope you are well. Good to hear your ex bird is going > well > > Do you remember her prop size, and static RPM and also MAX RPM straight and > level please > > Phil > > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > 211LF carries a Sterba prop, 60X68. I returned it early on to be re-pitched > as it seemed rpm was a bit low. I couldn't tell any difference on return. > It's been a while but I recall wide open level flight gave 2800 rpm, static > around 2400. Zach has made a few changes as well as engine work so he could > give more current info. > > Larry Flesner > > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet > -- KRnet mailing list KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet
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