flyrotary@lancaironline.net Mailing List Archive

Ed, I'll probably be in that mode after a while. The 20B is 50% thirstier than your 13B, so it may happen sooner rather than later. Mark On Nov 22, 2007 8:02 AM, Ed Anderson <eanderson@carolina.rr.com> wrote: > Well, I don't fly in the hot summer months. Do most of my flying in the fall > and spring. You're right with $4.00+ gallon fuel, that makes a 2 hour > flight boring holes cost me 16*4.00 = $64.00. After 400 hours in my Rotary, > boring holes at $32.00/hour fuel cost, that just doesn't appeal as it once > might have. Now, give me a place to go and its a different story. I > usually make several 1000+ mile round trips in a year, but other than to fly > to check out a new idea, I simply don't get in the air like I use to {:>). > > Ed > > ----- Original Message ----- > From: "Mark Steitle" <msteitle@gmail.com> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> > > Sent: Thursday, November 22, 2007 9:53 AM > Subject: [FlyRotary] Re: Fw: [Bulk] 16x > > > > Wow Ed, you really need to get out more! Of course, with current fuel > > prices I can't say that I blame you for sitting home playing on the > > computer. I was just trying to get a feel for what to expect for > > engine life on my 20B. > > > > Mark > > > > > > > > On Nov 22, 2007 7:29 AM, Ed Anderson <eanderson@carolina.rr.com> wrote: > >> Lets see, Mark, that rebuilt was in 05 down in Louisiana. I fly around > >> 50 > >> hours a year so, I've probably put around 100 hours on the rebuilt > >> engine. > >> > >> Ed > >> ----- Original Message ----- > >> From: "Mark Steitle" <msteitle@gmail.com> > >> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> > >> Sent: Thursday, November 22, 2007 9:04 AM > >> Subject: [FlyRotary] Re: Fw: [Bulk] 16x > >> > >> > >> > Ed, > >> > How many flight hours does your engine have on it since last rebuild? > >> > > >> > Mark > >> > > >> > On Nov 22, 2007 5:45 AM, Ed Anderson <eanderson@carolina.rr.com> wrote: > >> >> Thanks, George, that in indeed interesting information. Long throw > >> >> should > >> >> mean more torque. Be interesting to see how they have improved the > >> >> sealing. > >> >> Two years more development then all the production (assuming they go > >> >> forward > >> >> with it), so I should expect to see it for at least 5 years. Well, > >> >> hopefully the old 13B will hold out for that long. > >> >> > >> >> Ed > >> >> > >> >> ----- Original Message ----- > >> >> From: "George Lendich" <lendich@optusnet.com.au> > >> >> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> > >> >> Sent: Thursday, November 22, 2007 1:51 AM > >> >> Subject: [FlyRotary] Fw: [Bulk] 16x > >> >> > >> >> > >> >> > > >> >> > > >> >> >> Ed, Lynn and Bill + > >> >> >> > >> >> >> This was posted to me privately and may help to clarify the > >> >> >> specifications of the 16x. Some of the info are estimations by Rolf > >> >> >> Pfeiffer ex - NSU engineer. > >> >> >> > >> >> >>> Hello George > >> >> >>> Nice to hear from you. Here is my assessment: > >> >> >> > >> >> >> Also info supplied by Don Sherman as follows:- > >> >> >> > >> >> >> I interviewed Seiji Tashima, the engineering expert for Mazda's new > >> >> >> rotary, at Tokyo on your behalf. Here are a few details he > >> >> >> revealed: > >> >> >> Rotor width reduced by 5mm saves weight, improves apex seal > >> >> >> performance > >> >> >> trochoid is 25mm wider, 35mm taller for more displacement and > >> >> >> torque > >> >> >> would not reveal increase in eccentricity. New displacement is > >> >> >> 800cc/rotor. > >> >> >> > >> >> >> Aluminum end plates have plasma-sprayed wear surface direct and > >> >> >> indirect > >> >> >> fuel injection. > >> >> >> > >> >> >> Torque gains come from longer e-dimension, more displacement, and > >> >> >> direct > >> >> >> injection. > >> >> >> > >> >> >> He would not confirm 300 hp power goal. > >> >> >> All the gas seals are improved, with smaller flame holes adjacent > >> >> >> to > >> >> >> spark plugs. > >> >> >> The 16x engine ran for the first time this year, full development > >> >> >> will > >> >> >> be > >> >> >> at least 2 more years. > >> >> >> > >> >> >> Engine weight is reduced from 125kg [275 pounds] to 100 kg [220 > >> >> >> pounds]. > >> >> >> > >> >> >> Assessment by Rolf Pfeiffer as follows:- > >> >> >> > >> >> >>> /Now, using above dimensions we get the following: > >> >> >>> > >> >> >>> 25 mm wider means the short axis goes from 180 to 205 mm. > >> >> >>> 35 mm taller means the long axis goes from 240 to 275 mm. > >> >> >>> > >> >> >>> This results in E = 17.5 mm, and R = 120 mm. > >> >> >>> The old dimensions were E = 15 mm and R = 105 (including the > >> >> >>> radius > >> >> >>> of 3 > >> >> >>> mm for the apex seals). > >> >> >>> The ratio R/E is 6.857, down from 7.0. > >> >> >>> > >> >> >>> The ratio of stroke to piston area becomes higher which is what > >> >> >>> they > >> >> >>> want, I suppose. > >> >> >>> The RX7/8's were 0.33 S/D, above numbers would be 0.3764, a > >> >> >>> substantial > >> >> >>> 14% improvement in ratio of stroke to equivalent piston diameter. > >> >> >>> A > >> >> >>> long > >> >> >>> stroke engine, so to speak. > >> >> >>> > >> >> >>> I also had stated that: > >> >> >>> NSU also went that direction with their latest developments before > >> >> >>> folding. > >> >> >>> We are lucky that Mazda has the financial means and does carry on. > >> >> >>> > >> >> >>> The last big NSU unit EA 871 was approximately like this: > >> >> >>> (Calculating > >> >> >>> back from its displacement and width. I had already left by then, > >> >> >>> so > >> >> >>> the > >> >> >>> info is calculated.) > >> >> >>> E = 17.28, R = 120.5, width = 69 (given), displacement = 746.6 cc > >> >> >>> (given). > >> >> >>> This is very close to what Mazda seems to be doing now, if above > >> >> >>> numbers > >> >> >>> are right. > >> >> >>> NSU had great hopes in that engine. It was used in a German > >> >> >>> fan-liner. > >> >> >>> It was the high point of the Wankel development at NSU. > >> >> >>> Then the money did run out. NSU was merged with AUDI, and VW the > >> >> >>> parent, > >> >> >>> killed it all. All further development was stopped. > >> >> >>> > >> >> >>> Fan Trainer: > >> >> >>> http://www.der-wankelmotor.de/Flugzeuge/RFB/rfb.html#Fanliner > >> >> >>> > >> >> >>> Regards > >> >> >>> Rolf > >> >> >>> > >> >> >>> > >> >> >>> George Lendich wrote: > >> >> >>>> Rolf, > >> >> >>>> Could you give me your assessment of the new 16X eccentric. If I > >> >> >>>> remember correctly you gave you assessment on Paul's site. There > >> >> >>>> is > >> >> >>>> discussion on another site and I would like to pass it on to > >> >> >>>> interested > >> >> >>>> parties. > >> >> >>>> Also if my memory serves me right, you mentioned a manufacturer > >> >> >>>> was > >> >> >>>> working on a similar size ( change in eccentric) and what company > >> >> >>>> that > >> >> >>>> was. > >> >> >>>> Am I wrong to believe it was the company you were working with at > >> >> >>>> the > >> >> >>>> time? > >> >> >>>> George Lendich > >> >> >> > >> >> > > >> >> > > >> >> > -- > >> >> > Homepage: http://www.flyrotary.com/ > >> >> > Archive and UnSub: > >> >> > http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> >> > > >> >> > >> >> > >> >> -- > >> >> Homepage: http://www.flyrotary.com/ > >> >> Archive and UnSub: > >> >> http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> >> > >> > > >> > -- > >> > Homepage: http://www.flyrotary.com/ > >> > Archive and UnSub: > >> > http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> > > >> > >> > >> -- > >> Homepage: http://www.flyrotary.com/ > >> Archive and UnSub: > >> http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> > > > > -- > > Homepage: http://www.flyrotary.com/ > > Archive and UnSub: > > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html >