what happened to all the planes that used to be parked along the highway? for that matter where's all the planes next to the hangars... any hangars open / for sale?
On 5/6/2013 5:11 PM, Jeff Scott wrote: > Something to remember is that Continental also made a GO-300 that uses the > same rods and bearings, and a slightly different piston. Same compression, > not really any beefier, but turns 3100 or 3200 RPMs. They are also a 1200 > hour TBO, just for comparisons sake, and often times don't make that. As Edd > says, the loads go up dramatically with RPMs, so running them hard and fast > is a great way to make a really reliable engine into a not so reliable > engine. And the failure mode of a rod or valve failure is not a pleasant > thing to experience in flight. Horse power isn't going to get you much in > the way of speed. Aerodynamics will get you speed. HP is good for climb > performance. I prefer to work at aerodynamic clean up to make the plane go > fast and rarely push my engine beyond the recommended rpm range. Your mileage > may vary. > > -Jeff Scott > Los Alamos, NM > >> ----- Original Message ----- >> From: edd_wood at talk21.com >> Sent: 05/06/13 04:48 PM >> To: KRnet >> Subject: Re: KR> 0=200 rpm limit >> >> The greatest load on an engine is at TDC on the exhaust stroke, believe it >> or not, and the load is tensile. The 0200 is a relatively large capacity >> engine with just four cylinders which means the pistons are large and heavy >> which means large tensile loads. The load is squared with the increase in >> revs which means that increased revs puts a massive load on the con rods >> which in turn leads to engine failure. The beauty of most aircraft piston >> engines is the low output, low stress characteristics which is why they are >> so reliable. If you want to tune an engine for high horsepower/revs in >> relation to it's capacity then an aircraft engine is not the way to go. >> >> >> --- On Mon, 6/5/13, Larry&Sallie Flesner <flesner at frontier.com> wrote: >> >>> From: Larry&Sallie Flesner <flesner at frontier.com> >>> Subject: KR> 0=200 rpm limit >>> To: "KRnet" <krnet at list.krnet.org> >>> Date: Monday, 6 May, 2013, 23:14 >>> At 01:49 PM 5/6/2013, you wrote: >>>> For the 0-200 what IS the limiting factor for rpm? >>> With most road engines >>>> it's valve float. >>>> Thoughts? >>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> >>> I've always heard it was valve float. Crank them up >>> till you can't >>> get any more rpm and they race them all season like >>> that. If you >>> have a need for that much more speed, simply set an earlier >>> departure time. :-) >>> >>> Larry Flesner >>> >>> >>> >>> _______________________________________________ >>> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. >>> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org >>> please see other KRnet info at http://www.krnet.org/info.html >>> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org >>> to change options >>> >> _______________________________________________ >> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. >> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org >> please see other KRnet info at http://www.krnet.org/info.html >> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change >> options > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
