Mailing Lijst flyrotary@lancaironline.net Bericht #46724
Van: Michael Silvius <silvius@gwi.net>
Onderwerp: Re: [FlyRotary] Re: More progress, more questions....
Datum: Sun, 28 Jun 2009 19:39:45 -0500
Aan: Rotary motors in aircraft <flyrotary@lancaironline.net>
FWIW:
 
The disparaging comments come from the unlikeliest sources as well.
 
A few years back before buying my RD1C I called a geared PSRU distributor in Canada to inquire about the possibility of using his redrive on the Mazda rotary. The one attractive part on his unit to me was the off-set that would allow me to lower the engine, a desirable detail in my installation. I asked if his redrive had ever been used in combination with the Mazda rotary, and if so, what about the harmonics issues particular to the Mazda and how he addressed them.  At the time I also indicated that my other consideration was the already proven unit from RWS. What followed from him was a diatribe about the failures of the RWS ECU. He never answered my questions or addressed the issues I queried about, choosing instead to disparage Tracy's work and the Mazda rather than telling me how his own redrive could, or not work for me. That was enough for me to learn I did not want to deal with this fellow. I would rather deal with the one who has been there in the rotary world since the beginning, had a proven track record and know that there would be someone there who was willing to work with me in getting to my objective.
 
Beyond that what stands out to me is that the biggest teething problem for so many with the Mazda rotary so far is the complexity of the ECU/fuel inj/ ignition. As has been pointed out, the EC2 is not a plug and play device and does take some degree of ghostbusters poltergeist work to chase the gremlins down. And this may be a daunting issue for more than one of us. I am planning on a dead nuts basic carburated induction at least initially just to ease this part of the process.
 
Michael in soggy Maine
 
 
----- Original Message -----
Sent: Sunday, June 28, 2009 4:08 PM
Subject: [FlyRotary] Re: More progress, more questions....

The anti-rotary sentiments are out there in many shapes.
The other day I was surfing for PSRUs, when I read a PSRU manufacturer's diatribe about why he was NOT making PSRUs for the Mazda. Basically he focused on the real and rumored difficulties, past and present, of Mazda rotaries used on aircraft. This had nothing to do with PSRUs at all, but with his prejudiced thinking. There are a lot of rotaries out there being used in aircraft, and a lot of progress made in making them work. I, for one, believe the rotary has the potential of making the piston world get smaller and smaller - this is the real secret fear of all the piston-heads - loss of prestige and money..
Oh yeah, silly me, I forgot an important thing: Lycoming and Continental designed their engines, and they performed perfectly right away, never needing trials, never experiencing problems, never having to issue product warnings or recalls, right, guys!!?? No wonder all the rotary-experimenting poor slobs need to be put straight immediately and often! (For you concrete thinkers out there, this is sarcasm - I don't want to be blasted mistakenly.)
BTW, does anyone have a list of PSRU's that are also made for rotaries? The emphasis today seems to be on geared PSRUs, why is that? What scientific factual reasons prevent us from considering cog belts or chains?
Thank you.
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