I have wheel pants but don't use them because I am concerned they'll rip off on landing - I fly out of a grass strip in extra-rainy western WA....
My 'wide open' flying RPM is around 34-3500 if I remember right, although that's based on a westach 'voltmeter-style' tach - I grabbed a 'tinytach' off Amazon and plan to get precise numbers before I actually buy anything. What is the 'right' top-end RPM for a 2100D (the 65hp version, not the one with the wide valves)? On Tue, Feb 25, 2020 at 5:14 PM Mark Langford via KRnet < krnet@list.krnet.org> wrote: > Dave Acklam wrote: > > > I have a Tri Gear KR that I bought from John Bouyea, which I am > considering > > re-propping. > > The plane currently has a small-valve Revmaster 2100D & 52x52 Sterba > prop. > > Climb performance is not-so-great, and airspeed is ~115mph. > > Am I using the wrong RPM numbers? Do people typically cruise higher than > > 3200 with this engine? > > I'm running a Sterba 52x52 prop with a 2180cc engine using Revmaster > heads, and the performance is a solid 150 mph TAS wide open at 10,000', > turning about 3250 rpm. N891JF is a pretty slick airplane though, > although a bit on the heavy side. Having said that, all Sterba props > are not created the equal, and trying somebody else's prop (with known > good performance data) on your plane would be a good indicator of where > the problem is. > > Also, are the wheels faired, all three? If not, they will likely add > about 15 mph to your speed. > > Mark Langford > m...@n56ml.com > http://www.n56ml.com > > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
