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1. 06:52 AM - Re: RV-7 Performance Data Request (Greg Williams)
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| Subject: | Re: RV-7 Performance Data Request |
So what does it mean when you're in cruise, leaned but ROP, everything loo
ks good but one cylinder, number three, is running lower egt then the rest
. By almost a hundred degrees.
Greg
________________________________
From: owner-rv7-list-server@matronics.com <owner-rv7-list-server@matronics.
com> on behalf of Bevan <fvalarm@rapidnet.net>
Sent: Tuesday, July 16, 2019 2:45:48 PM
Subject: Re: RV7-List: RV-7 Performance Data Request
When flying high in my RV7A...
Throttle is always full open for max available manifold presssure,
I usually use 2400rpm for cruise because I've had it dynamically balanced a
t that RPM. Yours may be different.
Once established in cruise, I lean to LOP via the big pull method and end u
p around 40-60 LOP resulting in 7.5gph, 160Knots (TAS) at 8,000-11,000'. A
little slower when higher (maybe 155TAS @ 12,500' (from memory).
I have fuel injection and dual P-mags (spark advance) so not all will be ab
le to get the same results. What you really need to do is to do some resea
rch on the equipment/configurations onboard, plan some test cards and go fl
y. You'll want to know a bunch more stuff if it's not in the POH the build
er made (or didn't). Things like...
best rate/angle of climb.
Max power fuel consumption.
Various cruise speed fuel consumptions.
Best glide speed (mine was a range).
Least amount of sink (power off glide). Be sure to do it with prop fine AN
D coarse.
Doing these things yourself will bring a lot of understanding and make you
a better pilot. Each Amateur-built RV7 is somewhat unique for various reas
ons, and we like it this way. :)
Bevan
On 7/15/2019 8:30 AM, Greg Williams wrote:
I have flown my 2004 RV7 for many hours now (IO360, Hartwell C/S, SkyView).
Lots of cross country. I file for 150 knots at 12,000 or 11,000 dependi
ng on terrain & heading. Have O2 but wife doesn't like it. Usually see ab
out 19.5" at 2400rpm and run 8.5 gpm leaned out but ROP. I don't keep trac
k of exact numbers but these are close. Sometimes will run LOP but not th
at often. Greg
Greg
________________________________
From: owner-rv7-list-server@matronics.com<mailto:owner-rv7-list-server@matr
onics.com> <owner-rv7-list-server@matronics.com><mailto:owner-rv7-list-serv
er@matronics.com> on behalf of Garry Stout <garrys@tampabay.rr.com><mailto:
garrys@tampabay.rr.com>
Sent: Monday, July 15, 2019 8:10:12 AM
Subject: Re: RV7-List: RV-7 Performance Data Request
:garrys@tampabay.rr.com>
I too would be interested in these numbers.
Garry Stout
> On Jul 15, 2019, at 10:45 AM, mdaniels <aox1969@earthlink.net><mailto:aox
1969@earthlink.net> wrote:
>
ox1969@earthlink.net>
>
> Hi, I have an RV-7 with a LYCO IO-360 & a constant speed prop; and, I wou
ld like to get some actual performance figures to use in FltPlan.com. I wo
uld very much appreciate any data/performance figures that you use for X-co
untry planning. Hopefully I can =91pick your brain=92 for Altitude, RPM, M
anifold Pressure/Throttle setting, and what IAS & TAS speeds those settings
produce. It would also be greatly appreciated if you would include your Cl
imb & Descent speeds and GPH that you fly. Also, any tips or tricks that y
ou have learned in your X-country planning and flying.
> Thank you very much
>
>
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