From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] MISTRAL
Date: Wed, 17 Mar 2021 06:07:40 +0800
References: <list-1315964@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-1315964@logan.com>
Message-Id: <01412C6F-2880-4FA6-9460-2180490561F3@gmail.com>

Thanks Kelly. If possible the ID of those runners as well please.


> On 16 Mar 2021, at 10:44 pm, Kelly Troyer keltro@gmail.com =
<flyrotary@lancaironline.net> wrote:
>=20
> Steve,
>   Bear with me but as soon as practicable I will do my best to measure =
the intake length from engine face to face of the=20
> throttle body (plus ID of throttle body)............Yes the "Mistral" =
engines are side intake ports............I believe (from memory)
> that they rated HP at 6500 rpm...........Still waiting on all the =
"Mistral" documentation from the seller............
>=20
> Best,
> Kelly Troyer
>=20
> On Tue, Mar 16, 2021 at 5:51 AM Stephen Izett stephen.izett@gmail.com =
<flyrotary@lancaironline.net> wrote:
> Hi Kelly
> Sounds really cool. Such a shame Mistral didn=E2=80=99t make it.
> I thought their engines were side port. I=E2=80=99d love to know the =
length of the inlet from the engine face to the throttle body and the =
rpm that they rate the 200hp.
>=20
> Cheers
>=20
> Steve Izett
> Glasair Super IIRG Renesis 4 port RD1C
>=20
>=20
> > On 16 Mar 2021, at 9:59 am, Kelly Troyer keltro@gmail.com =
<flyrotary@lancaironline.net> wrote:
> >=20
> > Lee,
> >       I ask because I recently became the proud owner of the final =
iteration (Designed to be certified)  "Mistral G200-C1B" 200hp
> > Rotary engine  and I am just curious as to what apex seals they used =
in them........Since "Mistral" seems to be out of business I
> > do not know where to get information (I have heard that the Chinese =
bought them out)..............I do not need apex seals as the=20
> > engine only has about 10 flying hours on it..............=20
> >=20
> > Thanks,
> > Kelly Troyer
> >=20
> > On Mon, Mar 15, 2021 at 6:01 PM lehanover lehanover@aol.com =
<flyrotary@lancaironline.net> wrote:
> > I did not. I was asked to travel about inspecting installations =
prior to first flight, or to assist with installations.
> > But  if asked I would have suggested Ceramic  seals.=20
> > =20
> > We raced with Carbon seals and later, Ceramic seals. Carbons wear =
too fast for aircraft use but are soft and leave the housing chrome =
looking better than new as the years go by. No detectable wear at all. =
Near perfect sealing.  No skipping, no need for an extra spring.
> > Same for Ceramics. Light weight. No wear. Very expensive. But if you =
can use the same housings for 4 or 5 years, then not so bad.  The duty =
cycle of an aircraft engine is much tougher than that of a racer or =
street engine. =20
> > All early engines Had the wide carbon seals. We machined them down =
to fit the later rotors. So early housings would often run well over =
100,000 miles.  The iron seals with a chrome face have you running a =
chrome face against a chrome housing. Bad Mojo. With Premixing and or =
oil injection not so bad. Hard starting suggests=20
> > worn apex seals.  Both ceramic and carbon seals need to be sized to =
the housing width.
> > Any question, any time.=20
> > Lynn E. Hanover=20
> > =20
> >  message dated 3/14/2021 11:29:17 PM Eastern Standard Time, =
flyrotary@lancaironline.net writes:
> > =20
> > Lee Hanover,
> >     I seem to remember that you had some interaction back in the day =
with "MISTRAL" when they were developing their
> > Rotary engines .........If so did you ever hear what tip seals they =
used in their engines ? (Iron , Ceramic , Etc)...........
> > =20
> > Thanks,
> > --=20
> > Kelly Troyer
>=20