Sounds like Ill stick with the venerable VW. The 0200 is a good engine and a good midtime one can be had reasonably. On Aug 17, 2016 11:46 PM, "Jeff Scott via KRnet" <krnet at list.krnet.org> wrote:
> As Mark says, it mostly boils down to personal preference. A more > realistic view of the fuel burn was when Joe Horton and I flew side by side > from Los Alamos,NM to Chino, CA and back, he in his Corvair powered KR and > me in my O-200 powered KR. We flew the whole trip within sight of each > other. There are differences between our planes to be sure, but we are > very closely matched in speed and performance. Joe burned 1/2 gal/hr less > than I did with my O-200 for the trip. > > On the other hand, in 1150 hrs, my KR has never fallen from the sky. Not > many Corvair powered KRs can make that claim. For sure, I have abused and > broken things in my engine. But the O-200 is stout where it counts. It > has never missed a beat, and things like a broken rocker shaft boss were > found while performing routine maintenance in the hangar. If you're going > to build a Corvair to try to match an O-200 for reliability, it's going to > cost as much to build as the O-200. > > -Jeff Scott > Los Alamos, NM > > > > > > Sent: Wednesday, August 17, 2016 at 6:55 PM > From: "Mark Langford via KRnet" <krnet at list.krnet.org> > To: KRnet <krnet at list.krnet.org> > Cc: "Mark Langford" <ml at n56ml.com> > Subject: Re: KR> Kr2s Engine? > "Stan" wrote: > > > Based on the above wouldn't the Corvair seem to be the better > > choice? What is the advantage of the o200 vs the Corvair or the > > Corvair over the o200? What is the time between overhaul on a > > Corvair? > > The difference between the two boils down to the O-200 is a real > airplane engine, designed for the job, with compromises to make it last. > This includes lower compression for reduced stressed, and a more > primitive carb for simplicity. The biggest thing with the O-200 is that > it's purpose made for the job, with giant bearing near the prop to > handle prop loads. > > The Corvair was not designed to run wide open all the time, but if you > put a $2000 crankshaft in it and add a $1000 front bearing, the crank > becomes pretty reliable and there are few weak links left, one of which > is the semi-rare cam gear failure (and we know what to watch for on that > now). Rebuilds on a Corvair are pretty cheap, compared to the O-200, > and heads and cylinders survive rather well. Corvair parts are rather > plentiful, and simple stuff like gears are still made and cheap, rather > than rare and expensive. > > Having said that, if reliability is your number one goal, the O-200 is > the way to go. If efficiency and performance is your goal, the Corvair > may be the way to go. Cost is probably about the same either way, as > far as initial installation, depending on luck and scrounging ability. > > It's too early to tell what the TBO is on the Corvair...there just > aren't enough hours on them yet. I'd bet serious money that it's longer > on the Continental than the Corvair though! I don't think anybody would > disagree with that. > > I have a lot invested in Corvairs, and will stick with them. They are > far better than VWs, both in reliability and safety. And I have two of > them ready to run already. No, I'm not trying to sell either of them. > If I were starting over and an O-200 presented itself for a reasonable > price, I'd seriously considering buying it. With a new 4340 crank in my > Corvair though, I'm good with that option too, especially since they are > both paid for. > > > Mark Langford > ML at N56ML.com > http://www.n56ml.com > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/ > archmailv2-kr/search[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[http://www.krnet.org/info.html] > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org[ > 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 >
