I have a Thompson 60 x 70. But it too much for my engine. It is getting 2300 flat out straight and level. Only 2100 on climb Still sorting another prop to try
Phil Sent from my iPhone > On 26 Aug 2023, at 05:54, Larry Flesner via KRnet <krnet@list.krnet.org> > wrote: > > >> On 8/25/2023 12:21 PM, William Walsh via KRnet wrote: >> Guys I bought Gerry Hamiltons kr 1.5 and the prop that he had I think will >> not give me full RPM but close. Any one running and 0-200 please advise. >> Looking for middle of the road. Thought about going with the adjustable >> Sensenich prop and figure out the best pitch however at $3800 I think I’m >> gonna look at different directions. Live in WA State if any peps are close. >> >> Thanks in advance for your help >> William >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > When you say you "get close" to full RPM, what is the number? If you can get > anywhere near 2750 RPM at full throttle level cruise and don't intend to fly > off any "extremely short" runways I'd leave well enough alone. The prop I'd > recommend is no longer available so I can't advise on a prop. I put 800 > hours on an Ed Sterba 60X68 that was supposedly re-pitched to a 64P but I > couldn't tell any difference. With the 0-200 you can get a nice economical > cruise at 2450 to 2500 rpm on 5 to 5 1/2 gph if you lean and can expect a > long engine life. Put on a finer pitch prop and go cloud busting at 2700 or > 2800 rpm and burn up to 8 gph. Your engine has a determined number of rpm's > in it's life time. Why use them all on a limited number of flights? > > A bit more info with numbers, prop maker, pitch / diameter might help others > to offer better advise than I'm giving. > > Good luck........................ > > 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
