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indigoonlatigo(at)msn.com
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 Posted: Thu Nov 29, 2007 11:05 am Post subject: Is there a call for planned alternate engine use? |
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You keep using the E6 as an example, you don't mean to put and E6 into the 10 do you?
Don't you mean E6Tor TI.
With the turbo using the oil for its bearings, you may need to change the oil more than on a E6. Also consider the reduction drive gear oil.
I think this exercise is a little too small to be considerred.
Now where is that sushi knife?
| Quote: | Date: Thu, 29 Nov 2007 13:25:36 -0500
To: rv10-list(at)matronics.com
Subject: Re: Is there a call for planned alternate engine use?
From: deej(at)deej.net
--> RV10-List message posted by: Dj Merrill <deej(at)deej.net>
Tim Olson wrote:
> --> RV10-List message posted by: Tim Olson <Tim(at)MyRV10.com>
>
> To scribble on the back of the napkin further....
> I buy tempest filters for < $14 each from skygeek.com.
> Then you can also buy Philips x/c oil for less than
> $3/qt at the same time. Early on, my oil consumption
> was a total of 1 case used for my engine, from the
> start of the change thru 45-50 hours. So 12qts
> used ever 50 was common for many cases I used...at
> most 13 qts. ($35/case) My fuel burn on x/c trips
> averages 10gph, and on local flights ROP it's
> about 13-14.5 gph.
>
That's a good price on oil - I'll have to remember skygeek.com,
thanks! I was just looking at Aircraft Spruce and Amazon for typical
pricing.
So, in 100 hours:
Lyc - $70 for oil, $28 for oil filters, totalling $98.
H-6 - $30 for oil, $9 for an oil filter, totalling $39.
Lyc is about $59 more for oil and filters.
At 10gph, you would burn 1000 gallons of 100LL in 100 hours. I think
the H-6 is closer to 8.5 - 9 gals per hour, but if we go with the same
10 gph, we would have to use 1.56 bottles of Decalin fuel additive at a
cost of $44.
Overall, the Lyc would be about $15 more expensive than the Subaru
taking into account only the fuel (at the same burn rate), oil, and oil
filters. If the H-6 burns 9gph, thus 900 gallons over the 100 hours,
you'd save an additional approximate $400 in fuel costs if the 100LL
fuel prices stay around $4 per gallon, more if they increase.
In the grand scheme of aviation costs, these particular numbers are
close enough that I can't see it having a major influence on a purchase
decision.
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ
http://deej.net/sportsman/
"Many things that are unexplainable happen during the construction of an
airplane." --Dave Prizio, 30 ===
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[quote][b]
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deej(at)deej.net
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| Posted: Thu Nov 29, 2007 12:33 pm Post subject: Is there a call for planned alternate engine use? |
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John Gonzalez wrote:
| Quote: | You keep using the E6 as an example, you don't mean to put and E6 into
the 10 do you?
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I mean the E6 with the turbo, so E6T. I've always referred to it as
the H-6 since that was the original name for it when it first came out.
My apologies if I created any confusion.
| Quote: |
With the turbo using the oil for its bearings, you may need to change
the oil more than on a E6. Also consider the reduction drive gear oil.
|
I was referring to the Engine manual
(http://www.eggenfellneraircraft.com/ESeriesInstallationGuide.pdf). I
do not believe there are any differences in the oil or change frequency
(at least that I could find in the manual) between the E6 and the E6T.
| Quote: |
I think this exercise is a little too small to be considerred.
|
Yup, that's the point!  I don't think the numbers show any
appreciable difference in the overall daily cost of running either
powerplant (E6T versus the 540). Engine overhaul costs, PSRU overhaul
costs, spark plugs, etc. may have other impacts, but basic fluid costs
(fuel and oil) are not likely to have much difference between the two
engines on average, even if we include the PSRU gear oil and radiator
coolant. At least, not enough difference that it should be used as a
major influence on the purchase decision.
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ
http://deej.net/sportsman/
"Many things that are unexplainable happen during the construction of an
airplane." --Dave Prizio, 30 Aug 2005
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Ray.R.Doerr(at)sprint.com
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| Posted: Thu Nov 29, 2007 3:01 pm Post subject: Is there a call for planned alternate engine use? |
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Add in one oil analyses kit for the Lycoming and two for the
Subaru, one for engine oil and one for gear oil.
Thank You
Ray Doerr
--
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MauleDriver(at)nc.rr.com
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| Posted: Thu Nov 29, 2007 3:35 pm Post subject: Is there a call for planned alternate engine use? |
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It occurred to me that many RV10 builders reaction to "I'm going with an
Subie!" is analogous to the general public's reaction to "you're
building a plane... and you are going to fly in it!"
Of course the universal answer is, "sure, why not? no problem."
Reminds me of soaring's favorite question, "you fly an airplane (sic)
without an engine!" etc
Bill "RV10 building interupted by a dishwasher install from hell" Watson
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deej(at)deej.net
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| Posted: Thu Nov 29, 2007 5:04 pm Post subject: Is there a call for planned alternate engine use? |
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Doerr, Ray R [NTK] wrote:
| Quote: |
Add in one oil analyses kit for the Lycoming and two for the
Subaru, one for engine oil and one for gear oil.
|
For every 100 hours, the Lyc would use 2 as well as the Subaru (Lyc oil
changes every 50 hours, Subaru every 100 hours), so you'd break even here.
-Dj
--
Dj Merrill
Sportsman 2+2 Builder #7118
http://deej.net/sportsman/
"Many things that are unexplainable happen during the construction of an
airplane." --Dave Prizio, 30 Aug 2005
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