From: "William Jepson wrjjrs@gmail.com" <flyrotary@lancaironline.net>
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Date: Tue, 18 Sep 2018 12:58:18 -0700
Message-ID: <CAN=mtaeahS15K=oZiG7rTq0SUab5Kc30DVWWBv44W14-Oioozg@mail.gmail.com>
Subject: Re: [FlyRotary] ECU
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Neil,
I checked on Summit Racing and they show MANY ignitions for less than $100.
Carb wise I would look for a couple of the older motorcycle vacuum slide
carbs. They are somewhat self regulating to mixture and very simple. They
are available in many diameters. I would look for a pair of 38-40mm
versions Kehin and Mikuni both make many for motorcycles.

On Tue, Sep 18, 2018 at 12:33 AM Neil Unger 12348ung@gmail.com <
flyrotary@lancaironline.net> wrote:

> Now I am confused!!  Let me start again and where I am coming from is
> the everyday builder that may consider a rotary over a Lyc.
>
> Price and time will dictate in most cases.  Lets start with a second
> hand Lyc  $30,000  That gives "wriggle room" on a rotary of say $15 -
> 20,000 ready to go.
>
> $10,000 for an redrive and ECU does not leave much especially if it is a
> single rotor.
>
> I really like Lynn's suggestion of fixed ignition together with a Rotec
> carby,  Carby $600 USD and fuel is mainly done together with the ability
> to control mixture via the carby.
>
> THat leaves ignition   NO matter how I look at it with any sort of of
> ECU it takes little to get to say $2000 -- if you have some idea about
> computers -- I don't!
>
> What is actually necessary  with a simple ignition?  MY choice in order
> is  Spark and timing. RPM,  A/F ratio,   Engine and oil temp and
> pressure , Battery voltage.  Then whatever turns you on as anything else
> is not critical to flight or engine health.  I realise that the sky is
> the limit here but all cost money to be balanced against the Rotary vs
> the Lyc.
>
> Suggestions??  Remember I am computer illiterate. I prefer to say I was
> born too early rather than I am totally stupid!!  Price will sway people
> to a rotary rather than "lovely" gadgetry that cost a lot of money.
>
> Neil Unger.
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>

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<div dir=3D"ltr">Neil,<div>I checked on Summit Racing and they show MANY ig=
nitions for less than $100. Carb wise I would look for a couple of the olde=
r motorcycle vacuum slide carbs. They are somewhat self regulating to mixtu=
re and very simple. They are available in many diameters. I would look for =
a pair of 38-40mm versions Kehin and Mikuni both make many for motorcycles.=
=C2=A0</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Tue, S=
ep 18, 2018 at 12:33 AM Neil Unger <a href=3D"mailto:12348ung@gmail.com">12=
348ung@gmail.com</a> &lt;<a href=3D"mailto:flyrotary@lancaironline.net">fly=
rotary@lancaironline.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail=
_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:=
1ex">Now I am confused!!=C2=A0 Let me start again and where I am coming fro=
m is <br>
the everyday builder that may consider a rotary over a Lyc.<br>
<br>
Price and time will dictate in most cases.=C2=A0 Lets start with a second <=
br>
hand Lyc=C2=A0 $30,000=C2=A0 That gives &quot;wriggle room&quot; on a rotar=
y of say $15 - <br>
20,000 ready to go.<br>
<br>
$10,000 for an redrive and ECU does not leave much especially if it is a <b=
r>
single rotor.<br>
<br>
I really like Lynn&#39;s suggestion of fixed ignition together with a Rotec=
 <br>
carby,=C2=A0 Carby $600 USD and fuel is mainly done together with the abili=
ty <br>
to control mixture via the carby.<br>
<br>
THat leaves ignition=C2=A0=C2=A0 NO matter how I look at it with any sort o=
f of <br>
ECU it takes little to get to say $2000 -- if you have some idea about <br>
computers -- I don&#39;t!<br>
<br>
What is actually necessary=C2=A0 with a simple ignition?=C2=A0 MY choice in=
 order <br>
is=C2=A0 Spark and timing. RPM,=C2=A0 A/F ratio,=C2=A0=C2=A0 Engine and oil=
 temp and <br>
pressure , Battery voltage.=C2=A0 Then whatever turns you on as anything el=
se <br>
is not critical to flight or engine health.=C2=A0 I realise that the sky is=
 <br>
the limit here but all cost money to be balanced against the Rotary vs <br>
the Lyc.<br>
<br>
Suggestions??=C2=A0 Remember I am computer illiterate. I prefer to say I wa=
s <br>
born too early rather than I am totally stupid!!=C2=A0 Price will sway peop=
le <br>
to a rotary rather than &quot;lovely&quot; gadgetry that cost a lot of mone=
y.<br>
<br>
Neil Unger.<br>
<br>
<br>
--<br>
Homepage:=C2=A0 <a href=3D"http://www.flyrotary.com/" rel=3D"noreferrer" ta=
rget=3D"_blank">http://www.flyrotary.com/</a><br>
Archive and UnSub:=C2=A0 =C2=A0<a href=3D"http://mail.lancaironline.net:81/=
lists/flyrotary/List.html" rel=3D"noreferrer" target=3D"_blank">http://mail=
.lancaironline.net:81/lists/flyrotary/List.html</a><br>
</blockquote></div>

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