Dave, I've got a few years now behind my Revmaster and KR2S. Generally I've had no problem calling Joe Horvath and getting good information on the phone from him.
Revmaster redline for my 2100D is 3400 rpm per their book. Discussion with other Revmaster owners confirms this number. My Prop is 54x50 wood by Ed Sterba. I've gone past redline, but I rarely run it their. The engine likes to run, and feels right at 3000 to 3200 rpm. My typical RPM is 3000 for cruise. Cruise speed is 115 - 120 mph. For take off I push full throttle and I get 3200 rpm during takeoff run. This is probably high, but if I recall correctly you want to have at least 2900 rpm static on a VW - I think this is a Steve Bennet (Great Plains) recommendation. My prop probably needs more pitch as I can push it to the firewall and it will go past redline without trouble in level flight. But I'm having too much fun flying to make changes. I've got a POH on my web site you can steal and modify if you like. Thanks, Rob Schmitt N1852Z www.robert7721.com From: "peterdif...@googlemail.com" <pe...@heroic.co.uk> Subject: Re: KR> Revmaster and Warp Drive To: KRnet <kr...@mylist.net> Message-ID: <a9ed82ef-545a-4d0f-b461-8f5d0d5a3...@email.android.com> Content-Type: text/plain; charset=UTF-8 Sent from my Android phone with K-9 Mail. Please excuse my brevity. Dave Dunwoodie <ddunw...@fnwusers.com> wrote: Hi again everyone, I have more questions! Revmaster hasn't responded to my questions, but Warp Drive has. So I'm making a little progress! Here's a brief history. The airplane is a standard KR2 with spring gear and brakes. Beyond those changes, it appears to be plans-built. It is fitted with a Revmaster 2100D and a Warp Drive 3-blade prop, square tip, 52" diameter. I am soliciting suggested RPM settings, pitch settings, etc. I note that the Revmaster charts stop at around 3300 RPM, but that the curve is still rising at that 80HP point. Daryl at Warp Drive suggested that I should be looking at perhaps 3500-3600 RPM ??? He said that if I want to "slow it down" to 3000 RPM, some pitch adjustments might be appropriate. So I guess I'll ask for the simple information now, and then the detailed stuff later! What would be the redline for the 2100D ? What would be the best takeoff RPM setting ? What would be the best cruise RPM ? (And dozens more questions like that)... On the prop, what would be the best pitch, at least to start from ? Has anybody worked climb against cruise performance and developed some suggestions for pitch settings ? Any information and/or suggestions for this engine/prop combo would be most appreciated. The aircraft has 118 hours logged with this combo, but very little performance data is documented. The original tachometer had the redline at 3500 RPM, however Warp Drive is suggesting the 3500-3600 range for normal operations, so I'm wondering now. I am trying to develop a POH and also determine some do-not-exceed markings, etc., so any experience in these areas would really help. Thanks, Dave._____________________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
