RV9-List Digest Archive

Sun 09/24/06


Total Messages Posted: 3



Today's Message Index:
----------------------
 
     1. 06:21 AM - Re: IO360 (fcs@jlc.net)
     2. 08:51 AM - Re: IO360 (LessDragProd@aol.com)
     3. 12:53 PM - Re: IO360 (John Oliveira)
 
 
 


Message 1


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    Time: 06:21:59 AM PST US
    From: "fcs@jlc.net" <fcs@jlc.net>
    Subject: IO360
    --> RV9-List message posted by: "fcs@jlc.net" <fcs@jlc.net> > The finished weight of your RV9A, 1190 lbs, including full IFR stack, BMA EFIS, in-flight entertainment, extensive upholstery, cherry wood trim, excellent cabin heat, autopilot, dual batteries, fully redundant fuel and electrical systems, and of course an outstanding powerplant. > Typical Fuel Burns/RPM's/MP's All "real world" measurments are posted on performance page of www.eggenfellneraircraft.com (both 4 and 6 cyl). Typical 4-cyl (non-supercharged) cruise is 165/170mph at approx 7.5gph mogas. I've also posted miles per gallon and cost per mile and hour to illustrate real world economy. Fastest 4-way GPS for my own bird is 186mph at 7500'. No it won't hit VNE, because we have yet to figure out how to defeat the laws of physics (we're working on it). Dragging radiators through the air will always come with a penalty, but all things considered, the tradeoff is well worth it. Read through the web site and you'll see things in a different, real world, light. > Not meant as a flame at all, but just for an apples to apples comparision. No offense taken. But the fact is, they are not the same animals, so aside from raw numbers, the comparison is limited at best. There are far more factors to compare than performance alone. Take a ride in one and you'll see that very clearly. This is why our pilots love them. Total cost of ownership cannot be beat. > if you were to bolt your prop directly to the crank of your EGG and run it a > prop RPM (vs. 3,4 or 5K RPM) then you'd see IPS number closer in line with Lyco Not true at all. The Subaru has 7 main bearings on an 18" crankshaft and has no significant counterweights because of its symmetrical design. It is extraordinarily well balanced. Also fact, our redrive contributes more vibration (not the other way around as you suggest). It has a floating countershaft and four helical gears. These show up very clearly on a spectrograph. But even with the engine running at twice the crankshaft RPM as a conventional aircraft engine, we have achieved a very low level of vibration, not to mention quiet. It's hard to hang a price tag on the value of quiet... > conversely if we put a re-drive on a Lyco it would go way down to. No, the added gears, shafts, and bearings all contribute their own vibration signature. > Again, not meant as a point of argument, just trying to make sure people have all > the information as to quash any myths! No problem. It is particularly pleasing to let people quash their own misconceptions. > It just always seems that there are only two sides to this argument....love 'em or > hate 'em, and it really shouldn't be that way. That typically equates to "know about them" and "guess about them". Nothing pleases me more than giving the unknowing a ride in my plane. That always does the trick. With over 800 customers and as the second largest supplier of engines for RV's, it's only a matter of time before more people break away from the myths. We are lining up a Subaru fly-by for Oshkosh 2007. We've got around 40 customers so far. Should be fun. And by the way, for the hot-rodders out there, one of our customers flew his 4-cyl supercharged RV-7A at 215mph and 17,999' (prior to being intercepted). Ask Dan C. about it. Great talking to you! Gary Newsted -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ .


    Message 2


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    Time: 08:51:33 AM PST US
    From: LessDragProd@aol.com
    Subject: Re: IO360
    A 2 blade propeller has a second order harmonic that isn't present with a 3 blade propeller. For smoothness, get a 3 blade propeller. There are a number of different ones available. One would be the fixed pitch 3 blade Catto prop. It also follows that if you really want smoothness, get a 4 blade propeller. This eliminates the third order harmonics of a 3 blade propeller. Regards, Jim Ayers In a message dated 09/22/2006 11:20:37 AM Pacific Daylight Time, gbrasch@earthlink.net writes: --> RV9-List message posted by: gbrasch@earthlink.net You make a good point, but it's true, they did. But this is why I am now looking at the ECI 340, lighter, more power, and hopefully smoother than a 360. Glenn.


    Message 3


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    Time: 12:53:31 PM PST US
    From: John Oliveira <oliveira@frontiernet.net>
    Subject: Re: IO360
    --> RV9-List message posted by: John Oliveira <oliveira@frontiernet.net> The last RV newsletter from Vans had a comparison between IO 320 and Eggenfeller installations. Worth reading. I won't comment, but the number speak for themselves. Take a look. John Oliveira 90054 - still working on it On Sep 23, 2006, at 4:47 PM, SteinAir, Inc. wrote: > --> RV9-List message posted by: "SteinAir, Inc." <stein@steinair.com> > > To dispell any myths about your Subie Install...how about sharing: > > The finished weight of your RV9A, > Typical Fuel Burns/RPM's/MP's > Typical Speed's (TAS's). > > Not meant as a flame at all, but just for an apples to apples > comparision. > I'm sure many people would like to see your real world number to > assist them > in making their decision when thinking about an alternative engine. > > Also, just a quick side but if you were to bolt your prop directly > to the > crank of your EGG and run it a prop RPM (vs. 3,4 or 5K RPM) then > you'd see > IPS number closer in line with Lyco, conversely if we put a re- > drive on a > Lyco it would go way down to. Again, not meant as a point of > argument, just > trying to make sure people have all the information as to quash any > myths! > I for one have nothing against Sube's or other alternative > engines. It just > always seems that there are only two sides to this argument....love > 'em or > hate 'em, and it really shouldn't be that way. Objectivity would > go a long > way - instead of subjectivity. > > Cheers, > Stein. > > >> -----Original Message----- >> From: owner-rv9-list-server@matronics.com >> [mailto:owner-rv9-list-server@matronics.com]On Behalf Of fcs@jlc.net >> Sent: Saturday, September 23, 2006 2:29 PM >> To: rv9-list@matronics.com >> Subject: RE: RV9-List: IO360 >> >> >> --> RV9-List message posted by: "fcs@jlc.net" <fcs@jlc.net> >> >> >> Then again, my own RV-9A with a 165hp Eggenfellner Subaru balanced >> out at >> 0.02ips. Try to achieve that level of smoothness with ANY lyco! >> The 6 cyl >> 212hp is even smoother and weighs no more than an IO360. Myths >> abound... >> >> Gary >> >> -------------------------------------------------------------------- >> mail2web - Check your email from the web at >> http://mail2web.com/ . >> >> >> >> >> >> >> > >




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