Today's Message Index:
----------------------
1. 06:39 AM - Re: Compressor (Dale)
2. 07:43 AM - Re: Re: Compressor (Larry Pine)
3. 09:23 AM - Re: Re: Compressor (Bitterlich, Mark G CIV NAVAIR, WD)
4. 10:48 AM - Re: Re: Compressor (Mark Davis)
5. 11:17 AM - Re: Re: Compressor (Larry Pine)
6. 11:17 AM - Re: Re: Compressor (Richard Goode)
7. 11:36 AM - Re: Re: Compressor (Bitterlich, Mark G CIV NAVAIR, WD)
8. 06:00 PM - Auto Plug Conversion (Mozam)
Message 1
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Compressor same on both Ci and Yak
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400253#400253
Message 2
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`And appearantly the AN2 is the same.- I fly with an AN2 compressor.- A
bout 4-5 inches longer and it appears there is a second compressor on top o
f what would be the normal M14 compressor.- Works great.- I can recharg
e an empty bottle at idle in about 5 minutes.=0A=0A=0ALarry Pine=0A=0A=0A__
______________________________=0AFrom: Dale <dale@frii.com>=0ATo: yak-list@
matronics.com =0ASent: Friday, May 10, 2013 6:36 AM=0ASubject: Yak-List: Re
=0A=0ACompressor same on both Ci and Yak=0A=0A=0A=0A=0ARead this topic onli
ne here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=400253#400253
=========================0A
=================
Message 3
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That's a sweet setup Larry.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine
Sent: Friday, May 10, 2013 10:40
Subject: Re: Yak-List: Re: Compressor
`And appearantly the AN2 is the same. I fly with an AN2 compressor.
About 4-5 inches longer and it appears there is a second compressor on
top of what would be the normal M14 compressor. Works great. I can
recharge an empty bottle at idle in about 5 minutes.
Larry Pine
From: Dale <dale@frii.com>
Sent: Friday, May 10, 2013 6:36 AM
Subject: Yak-List: Re: Compressor
Compressor same on both Ci and Yak
Message 4
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Does anyone know if the AN2 compressor pulls significantly more horsepower
to run the higher volume output? I've seen the AN2 compressors on eBay
before and knew they would fit but didn't know if they pulled harder and
would cause a slightly higher fuel burn unless they were unloaded in flight.
Mark Davis
N44YK
----- Original Message -----
From: "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich@navy.mil>
Sent: Friday, May 10, 2013 10:21 AM
Subject: RE: Yak-List: Re: Compressor
> <mark.bitterlich@navy.mil>
>
> That's a sweet setup Larry.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine
> Sent: Friday, May 10, 2013 10:40
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Re: Compressor
>
> `And appearantly the AN2 is the same. I fly with an AN2 compressor.
> About 4-5 inches longer and it appears there is a second compressor on
> top of what would be the normal M14 compressor. Works great. I can
> recharge an empty bottle at idle in about 5 minutes.
>
>
> Larry Pine
>
> From: Dale <dale@frii.com>
> To: yak-list@matronics.com
> Sent: Friday, May 10, 2013 6:36 AM
> Subject: Yak-List: Re: Compressor
>
>
>
> Compressor same on both Ci and Yak
>
>
>
Message 5
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I can just tell you from- my experience.. I can unload mine in flight and
i see virtually no difference in % or speed between the two.- Because it
is bigger it has to be clocked at a different angle which in my case requi
red the oil hose from the screen to the pump to be-made longer-and re-r
outed.- Love the extra air though...=0A=0A-=0ALarry Pine=0A=0A=0A______
__________________________=0AFrom: Mark Davis <markdavis@wbsnet.org>=0ATo:
yak-list@matronics.com =0ASent: Friday, May 10, 2013 10:45 AM=0ASubject: Re
vis" <markdavis@wbsnet.org>=0A=0ADoes anyone know if the AN2 compressor pul
ls significantly more horsepower =0Ato run the higher volume output?- I'v
e seen the AN2 compressors on eBay =0Abefore and knew they would fit but di
dn't know if they pulled harder and =0Awould cause a slightly higher fuel b
urn unless they were unloaded in flight.=0A=0AMark Davis=0AN44YK=0A=0A=0A--
--- Original Message ----- =0AFrom: "Bitterlich, Mark G CIV NAVAIR, WD" <ma
rk.bitterlich@navy.mil>=0ATo: <yak-list@matronics.com>=0ASent: Friday, May
10, 2013 10:21 AM=0ASubject: RE: Yak-List: Re: Compressor=0A=0A=0A> --> Yak
-List message posted by: "Bitterlich, Mark G CIV NAVAIR, WD" =0A> <mark.bit
terlich@navy.mil>=0A>=0A> That's a sweet setup Larry.=0A>=0A> Mark=0A>=0A>
=0A> -----Original Message-----=0A> From: owner-yak-list-server@matronics.c
om=0A> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine
=0A> Sent: Friday, May 10, 2013 10:40=0A> To: yak-list@matronics.com=0A> Su
bject: Re: Yak-List: Re: Compressor=0A>=0A> `And appearantly the AN2 is the
same.- I fly with an AN2 compressor.=0A> About 4-5 inches longer and it
appears there is a second compressor on=0A> top of what would be the normal
M14 compressor.- Works great.- I can=0A> recharge an empty bottle at i
dle in about 5 minutes.=0A>=0A>=0A> Larry Pine=0A>=0A> From: Dale <dale@fri
i.com>=0A> To: yak-list@matronics.com=0A> Sent: Friday, May 10, 2013 6:36 A
M=0A> Subject: Yak-List: Re: Compressor=0A>=0A>=0A> --> Yak-List message po
sted by: "Dale" <dale@frii.com>=0A>=0A> Compressor same on both Ci and Yak
=========================0A
=======================
Message 6
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By definition they will use more power, but not really significant. Standard
compressor uses a maximum of 3 hp.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
Sent: 10 May 2013 18:45
Subject: Re: Yak-List: Re: Compressor
Does anyone know if the AN2 compressor pulls significantly more horsepower
to run the higher volume output? I've seen the AN2 compressors on eBay
before and knew they would fit but didn't know if they pulled harder and
would cause a slightly higher fuel burn unless they were unloaded in flight.
Mark Davis
N44YK
----- Original Message -----
From: "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich@navy.mil>
Sent: Friday, May 10, 2013 10:21 AM
Subject: RE: Yak-List: Re: Compressor
> <mark.bitterlich@navy.mil>
>
> That's a sweet setup Larry.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine
> Sent: Friday, May 10, 2013 10:40
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Re: Compressor
>
> `And appearantly the AN2 is the same. I fly with an AN2 compressor.
> About 4-5 inches longer and it appears there is a second compressor on
> top of what would be the normal M14 compressor. Works great. I can
> recharge an empty bottle at idle in about 5 minutes.
>
>
> Larry Pine
>
> From: Dale <dale@frii.com>
> To: yak-list@matronics.com
> Sent: Friday, May 10, 2013 6:36 AM
> Subject: Yak-List: Re: Compressor
>
>
>
> Compressor same on both Ci and Yak
>
>
>
--
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Message 7
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Mark, if you see them listed again on EBay again, please do me a favor
and send an alert my way, because I truly want one or two myself. Maybe
three. :-)
I think we could discuss the issue of power robbing pretty easily.
Given that the volumetric output of this compressor is higher than the
one we currently have, when the pump is filling an empty bottle, it
clearly is going to draw more power from the engine. How much exactly
would require a good deal of engineering data that would probably be an
exercise in frustration.
However, that is only transitional since the tank is going to fill more
rapidly and reach the point where the blow-off valve opens to relieve
over-pressure earlier. Thus the distributed load between the two while
filling is going to be about the same right?
So the question then becomes how much power is being robbed from the
engine as the compressor produces enough volume at approximately 735 PSI
to open the over-pressure valve. Since it has a higher volume output,
the engine is going to be putting power into the compressor for an
equivalently longer period of time as that excess volume is blown off
through the relief valve.
So a fair comparison of the power robbed from the engine could be
computed by knowing the exact differences in volume under load at 735
PSI for each compressor type. My personal opinion is that you would be
hard pressed to feel the difference.
This whole concept of "unloading" the compressor with the use of a
home-made arrangement of either opening the snot valve, or more
expensive yet, with the use of an electrically controlled relief valve
has always struck me as "urban legend". Yes, I have seen it on quite a
number of Unlimited Competitive Sukhoi's, and I am also aware of exactly
who came up with this concept in the first place. These same folks are
using every trick in the book to increase aircraft performance in ANY
WAY POSSIBLE, and they'll do it if there is even a CHANCE of it being
real. These same gents were also plugging up the accelerator pump in
the pressure carbs too, which in the end turned up to be less than a
good thing.
So in the end, I ask myself this question: Do you think that a three
horsepower four stroke gas lawnmower engine could drive our current
compressor to about 2000 RPM and deliver 735 PSI of output? Yes I
believe it would. But if there is any doubt, I am DARN sure that a 5 HP
engine would!
So, at load the compressor might be robbing 3-5 HP or so ... And worse
yet, as the compressor wears out, once the tank is full, it draws even
less load.
So how much additional fuel do you think you'll burn for about three
horsepower?
Then there is the issue of bearing loads. Will this compressor last
longer if it is operating under load at all times, or if you release all
load and just have it running along at full speed against zero load?
I'm really not sure. The question is not as easy to answer as one might
think. In any case, I do not unload mine, and the original compressor
is now reaching 800 hours and is still working perfectly.
Of course if you DO unload it, in theory the only difference between the
two would be frictional load, which would be very minimal.
Too long an email I know, but this is something I have had an opinion
about for a long time and just never felt like verbalizing it. Unless
you are looking for the ultimate edge, I don't believe unloading
compressors is really necessary... but I would be more than glad to hear
opinions otherwise based on factual info.
In the interim, I want one of the AN2 compressors. :-)
mgb
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Davis
Sent: Friday, May 10, 2013 13:45
Subject: Re: Yak-List: Re: Compressor
Does anyone know if the AN2 compressor pulls significantly more
horsepower
to run the higher volume output? I've seen the AN2 compressors on eBay
before and knew they would fit but didn't know if they pulled harder and
would cause a slightly higher fuel burn unless they were unloaded in
flight.
Mark Davis
N44YK
----- Original Message -----
From: "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich@navy.mil>
Sent: Friday, May 10, 2013 10:21 AM
Subject: RE: Yak-List: Re: Compressor
> <mark.bitterlich@navy.mil>
>
> That's a sweet setup Larry.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Larry Pine
> Sent: Friday, May 10, 2013 10:40
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Re: Compressor
>
> `And appearantly the AN2 is the same. I fly with an AN2 compressor.
> About 4-5 inches longer and it appears there is a second compressor on
> top of what would be the normal M14 compressor. Works great. I can
> recharge an empty bottle at idle in about 5 minutes.
>
>
> Larry Pine
>
> From: Dale <dale@frii.com>
> To: yak-list@matronics.com
> Sent: Friday, May 10, 2013 6:36 AM
> Subject: Yak-List: Re: Compressor
>
>
>
> Compressor same on both Ci and Yak
>
>
>
Message 8
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| Subject: | Auto Plug Conversion |
I'm probably late to the party, but converting to auto plugs and wires with the
Dennis Savarese conversion kit is GREAT. You can find it at yak-52.com. (I have
NOTHING to do with Dennis or his products.)
I installed it this week and was amazed at how much smoother the engine ran and
how much easier cold starts are now. Just wish I had installed it earlier!
Thanks Dennis for supporting our planes with such a quality product.
-Steve Dalton
Yak-52TW #1
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=400309#400309
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