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Date: Sun, 10 May 2009 20:32:16 -0700 (PDT)
From: James Maher <delta11xd@att.net>
Reply-To: delta11xd@att.net
Subject: Re: [FlyRotary] Fuel Effeciency
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-3638254@logan.com>
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Dennis,
Thanks for the positive report on MPG.
That puts another argument against the Rotary to rest.
Many of the former negative aspects of the Rotary have been alleviated but
the detractors would always be=A0able to resort to "the Lyc doesn't use as =
much fuel as the rotary". Up till now I would have to give them that.
I'll be glad to be able to respond that the Renesis has resolved that argum=
ent now.
=A0
Jim

--- On Sun, 5/10/09, Dennis Haverlah <clouduster@austin.rr.com> wrote:

From: Dennis Haverlah <clouduster@austin.rr.com>
Subject: [FlyRotary] Fuel Effeciency
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Date: Sunday, May 10, 2009, 11:16 PM


My neighbor and I both have RV-7A's.=A0 He has a carborated Lycoming 360 wi=
th "E" Mags and claims about 185+ hp with a fixed pitch metal prop. =A0 He =
told me the "E" mags really improved fuel efficiency and added noticeable h=
orsepower.=A0 I have a 4 port Renesis with Tracy's RD-1C and Catto 76/88 co=
mposite prop.=A0 We have similar performance on take-off and climb - we wil=
l be doing some high altitude speed runs in the future.=A0=20

Saturday we flew in=A0 formation from Austin (40XS) to south west of Dallas=
 (0TX1) and returned.=A0 Total flight mileage was about 140 miles each way.=
=A0 We filled both tanks on each aircraft to the filler neck before and aft=
er the flight.=A0 He uses 100 LL avgas and I use regular car gas.=A0 At 0TX=
1 I had to execute a go-around because 3 aircraft were taxing on the runway=
 and did not clear it for landing aircraft!.=A0 My neighbor was able to lan=
d without going around.=A0 I estimate I used about 0.7 gal for the go-aroun=
d.=A0 I leaned the Renesis some but did not try to run as lean as possible.=
=A0=20

When we got home we checked the fuel meters on the mogas and 100 LL fuel st=
orage systems using a 5 gallon fuel container and made sure both fuel deliv=
ery meters measured the same.

After the flight I required 18.7 gal. -0 .7 for the go-around =3D 18.0 gal.=
 of=A0 mogas.=A0=A0=A0 My neighbor's aircraft took 19.0 gallons of 100 LL.
My fuel costs $2.00/gal or $36.00=A0 His fuel costs $3.50/gal or $65.00.

The Mazda Technical Papers on the Renesis indicate a significant improvemen=
t in fuel efficiency over earlier RX-7 versions..=A0 I believe this flight =
proves it - the Renesis beat a Lycoming with fuel efficient "E" mags.

Dennis Haverlah

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<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D"=
top" style=3D"font: inherit;"><DIV>Dennis,</DIV>
<DIV>Thanks for the positive report on MPG.</DIV>
<DIV>That puts another argument against the Rotary to rest.</DIV>
<DIV>Many of the former negative aspects of the Rotary have been alleviated=
 but</DIV>
<DIV>the detractors would always be&nbsp;able to resort to "the Lyc doesn't=
 use as much fuel as the rotary". Up till now I would have to give them tha=
t.</DIV>
<DIV>I'll be glad to be able to respond that the Renesis has resolved that =
argument now.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Jim<BR><BR>--- On <B>Sun, 5/10/09, Dennis <SPAN>Haverlah</SPAN> <I>&lt=
;clouduster@austin.rr.com&gt;</I></B> wrote:<BR></DIV>
<BLOCKQUOTE style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(=
16,16,255) 2px solid">From: Dennis Haverlah &lt;clouduster@austin.rr.com&gt=
;<BR>Subject: [FlyRotary] Fuel Effeciency<BR>To: "Rotary motors in aircraft=
" &lt;flyrotary@lancaironline.net&gt;<BR>Date: Sunday, May 10, 2009, 11:16 =
PM<BR><BR>
<DIV id=3Dyiv277755043>My neighbor and I both have RV-7A's.&nbsp; He has a =
carborated Lycoming 360 with "E" Mags and claims about 185+ hp with a fixed=
 pitch metal prop. &nbsp; He told me the "E" mags really improved fuel effi=
ciency and added noticeable horsepower.&nbsp; I have a 4 port Renesis with =
Tracy's RD-1C and Catto 76/88 composite prop.&nbsp; We have similar perform=
ance on take-off and climb - we will be doing some high altitude speed runs=
 in the future.&nbsp; <BR><BR>Saturday we flew in&nbsp; <B><U>formation</U>=
</B> from Austin (40XS) to south west of Dallas (0TX1) and returned.&nbsp; =
Total flight mileage was about 140 miles each way.&nbsp; We filled both tan=
ks on each aircraft to the filler neck before and after the flight.&nbsp; H=
e uses 100 LL avgas and I use regular car gas.&nbsp; At 0TX1 I had to execu=
te a go-around because 3 aircraft were taxing on the runway and did not cle=
ar it for landing aircraft!.&nbsp; My neighbor was able to land
 without going around.&nbsp; I estimate I used about 0.7 gal for the go-aro=
und.&nbsp; I leaned the Renesis some but did not try to run as lean as poss=
ible.&nbsp; <BR><BR>When we got home we checked the fuel meters on the moga=
s and 100 LL fuel storage systems using a 5 gallon fuel container and made =
sure both fuel delivery meters measured the same.<BR><BR>After the flight I=
 required 18.7 gal. -0 .7 for the go-around =3D 18.0 gal. of&nbsp; mogas.&n=
bsp;&nbsp;&nbsp; My neighbor's aircraft took 19.0 gallons of 100 LL.<BR>My =
fuel costs $2.00/gal or $36.00&nbsp; His fuel costs $3.50/gal or $65.00.<BR=
><BR>The Mazda Technical Papers on the Renesis indicate a <U>significant im=
provement</U> in fuel efficiency over earlier RX-7 versions..&nbsp; I belie=
ve this flight proves it - the Renesis beat a Lycoming with fuel efficient =
"E" mags.<BR><BR>Dennis Haverlah<BR></DIV></BLOCKQUOTE></td></tr></table>
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