Today's Message Index:
----------------------
1. 02:40 AM - Re: RV transition training (Doug Gray)
2. 05:17 AM - Re: RV transition training (Bob Collins)
3. 06:48 AM - RV transition training (Bill VonDane)
4. 07:03 AM - Re: RV transition training (renewhall2)
5. 07:57 AM - Subject: Re: Breather run into exhaust (Joe & Jan Connell)
6. 07:58 AM - Re: RV transition training (Vanremog@aol.com)
7. 08:07 AM - Re: Re: RV transition training (Brian Meyette)
8. 08:18 AM - Re: Subject: Re: Breather run into exhaust (Konrad L. Werner)
9. 08:20 AM - Re: Breather run into exhaust (Konrad L. Werner)
10. 08:50 AM - Re: garmin 196 ()
11. 09:13 AM - Re: Breather run into exhaust (Konrad L. Werner)
12. 09:20 AM - Re: Breather run into exhaust (Konrad L. Werner)
13. 12:08 PM - Re: Re: RV transition training (David Dalton)
14. 01:04 PM - Re: Breather run into exhaust (warning) ()
15. 01:10 PM - Re: Re: RV transition training (Ron Lee)
16. 01:55 PM - Breather run into exhaust (warning) (James H Nelson)
17. 03:24 PM - Re: Re: Breather run into exhaust (warning) (n801bh@netzero.com)
18. 03:41 PM - Re: Re: Breather run into exhaust (warning) (Konrad L. Werner)
19. 03:44 PM - Re: Breather run into exhaust (warning) (Konrad L. Werner)
20. 04:18 PM - Re: Re: Breather run into exhaust (warning) (PittsS1@aol.com)
21. 04:40 PM - Re: Re: Breather run into exhaust (warning) (Konrad L. Werner)
22. 05:15 PM - Re: Grand Canyon was Rocky Mountain route: Noob question (Richard Reynolds)
23. 07:02 PM - Wingtip rib question (Timothy E. Cone)
24. 11:54 PM - Re: Breather run into exhaust (Fiveonepw@aol.com)
Message 1
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| Subject: | Re: RV transition training |
Where is the current Yeller Pages repository?
Doug
On Wed, 2007-06-06 at 01:07 -0400, Vanremog@aol.com wrote:
> In a message dated 6/5/2007 9:07:42 P.M. Pacific Daylight Time,
> brianpublic2@starband.net writes:
> Unfortunately, the VAF list is woefully incomplete. There are
> MANY more
> pilots providing transition training now. I'm not sure how to
> round them
> all up
>
> ============================================
>
> We shouldn't have to round them up. If anyone out there is giving or
> knows someone giving transition training, please provide me their info
> and I will add them into the Yeller Pages. That is what it is for.
>
> I can't imagine anyone providing this important service (who
> presumably would like to get even more business than they are
> currently getting) and would not want to be listed in the most public
> RV listings possible.
>
> GV (RV-6A N1GV O-360-A1A, C/S, Flying 847hrs, Silicon Valley, CA)
>
>
>
>
>
> ______________________________________________________________________
> See what's free at AOL.com.
>
>
>
Message 2
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| Subject: | RV transition training |
//I'll add a link to your page, too
No need, just copy and paste off that page and stick 'em on yours. Sounds
like a good project and probably would be easier folks to have them all on
one page somewhere rather than just links pointing all over the place.
Bob
Message 3
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| Subject: | RV transition training |
Hey All...
I do have a new site I have been working on that we could use for this...
www.wheelsup.org - Click on databases and the flight instructors /
transition training...
Its a pretty new site so I don't have a lot of data, very little actually,
but there is a link at the top of the page that will allow you to submit
your information to be added tot he database...
Thanks!
-Bill
Vanremog@aol.com wrote:
In a message dated 6/5/2007 9:07:42 P.M. Pacific Daylight Time,
brianpublic2@starband.net writes:
Unfortunately, the VAF list is woefully incomplete. There are MANY more
pilots providing transition training now. I'm not sure how to round them
all up
============================================
We shouldn't have to round them up. If anyone out there is giving or knows
someone giving transition training, please provide me their info and I will
add them into the Yeller Pages. That is what it is for.
I can't imagine anyone providing this important service (who presumably
would like to get even more business than they are currently getting) and
would not want to be listed in the most public RV listings possible.
GV (RV-6A N1GV O-360-A1A, C/S, Flying 847hrs, Silicon Valley, CA)
_____
See what's free at AOL.com <http://www.aol.com?ncid=AOLAOF00020000000503> .
Message 4
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| Subject: | Re: RV transition training |
Brian,
I'm offering RV instruction in my -7. My info is:
Bob Newhall, CFI airplanes & gliders
Raleigh, NC (as of July 1, 2007)
RV7, tailwheel, O360, c/s prop, $140/hr wet
Contact:
303.819.1482 cell
renewhall2@yahoo.com
website: http://renewhall2.googlepages.com
Bob
--------
Bob Newhall
N829RV
RV Transition Training
Boulder, CO
renewhall2.googlepages.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=116859#116859
Message 5
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| Subject: | Re: Breather run into exhaust |
Does this implementation negate the "whistle slot
used to avoid blockages of the crankcase vent?"
Joe Connell
RV-9A N95JJ
Message 6
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| Subject: | Re: RV transition training |
In a message dated 6/6/2007 2:41:40 A.M. Pacific Daylight Time,
dgra1233@bigpond.net.au writes:
Where is the current Yeller Pages repository?
==========================================================
_http://www.matronics.com/YellerPages/_
(http://www.matronics.com/YellerPages/)
GV (RV-6A N1GV O-360-A1A, C/S, Flying 847hrs, Silicon Valley, CA)
************************************** See what's free at http://www.aol.com.
Message 7
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| Subject: | Re: RV transition training |
Thanks, Bob. I've added your info. The list continues to grow, and also
references more info in several other lists. If there are any other
names, please reply here or email me direct. This is what we have so far:
http://brian76.mystarband.net/training.htm
brian
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com]On Behalf Of renewhall2
Sent: Wednesday, June 06, 2007 9:03 AM
Subject: RV-List: Re: RV transition training
Brian,
I'm offering RV instruction in my -7. My info is:
Bob Newhall, CFI airplanes & gliders
Raleigh, NC (as of July 1, 2007)
RV7, tailwheel, O360, c/s prop, $140/hr wet
Contact:
303.819.1482 cell
renewhall2@yahoo.com
website: http://renewhall2.googlepages.com
Bob
--------
Bob Newhall
N829RV
RV Transition Training
Boulder, CO
renewhall2.googlepages.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=116859#116859
PM
PM
Message 8
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| Subject: | Re: Breather run into exhaust |
The whistle slot is there to mainly prevent freezing of the end of the
breather pipe. Won't happen if it ends in the hot exhaust system, I
would think... But you can leave a whistle slot in the pipe anyway if
it makes you feel better...
----- Original Message -----
From: Joe & Jan Connell
To: RV-List
Sent: Wednesday, June 06, 2007 8:29 AM
Subject: Subject: Re: RV-List: Breather run into exhaust
Does this implementation negate the "whistle slot
used to avoid blockages of the crankcase vent?"
Joe Connell
RV-9A N95JJ
Message 9
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| Subject: | Re: Breather run into exhaust |
Should work equally well with inverted systems.
----- Original Message -----
From: Jeff Dowling
To: rv-list@matronics.com
Sent: Tuesday, June 05, 2007 1:02 PM
Subject: Re: RV-List: Breather run into exhaust
<shempdowling2@earthlink.net>
I havent hooked up my inverted oil system yet. Would this system work
with the inverted system?
Shemp
n801bh@netzero.com wrote:
>
> It is very simple , just connect your vent line that in presently
> being dumped overboard to the valve thats fastened to the exhaust
> pipe. The concept is this, as the exhaust gas passes over the end of
> the little pipe thats in the tailpipe it causes suction, just like
> those parts cleaners that connect to a high pressure air line and
have
> another hose that goes into a can of solvent. With the crankcase
> evacuation system the faster the motor revs, the greater the exhaust
> speed is and the greater the suction, which is perfect because the
> higher the motor revs the greater the blow by.
>
> do not archive
>
>
> Ben Haas
> N801BH
> www.haaspowerair.com
>
> -- Joe Garner <jgarner@dslextreme.com> wrote:
>
> Is this the kit your talking about? Got a photo
> of how you plumbed it into the exhaust?
>
> Thanks, Joe
>
>
http://www.mr-gasket.com/ProductDetails.aspx?brandId=1&productID=8637
035&majID=375&minID=3753&selection=9&minselection=1
>
>
> n801bh@netzero.com wrote:
> > Mike, exhaust venting is the way to go for a clean belly. There
are
> > several kits available to do this. Mr Gasket comes to mind and I
use
> > that one, it comes with a steel check valve to prevent any
blowback into
> > the crankcase. The kit comes with two of them but I only use one
in my
> > applications so I have a spare. It's yours for the cost of
freight,
> > probably 5 bucks or so. Contact me at my web site if interested..
> >
> > do not archive
> >
> >
> > Ben Haas
> > N801BH
> > www.haaspowerair.com
> >
> > -- "mbick" <mbick@carolina.rr.com> wrote:
> >
> > I was wondering if anyone ran their breather tube into the
exhaust. I
> > have seen this done more and more lately on aerobatic planes where
the
> > breather runs into exhaust. Granted they have some separation from
> > direct crankcase breathing vie the inverted systems but vent none
the
> > less into the exhaust. Any thoughts?
> >
> >
> >
> > Thanks
> >
> > Mike
> >
> > *
>
========================s
p; - The RV-Lisp;the many List utilities such as
the&nbs======================
=sp; - NEW MATROent now also available via the Web
Fo========================
============
>
> *
>
>
> *
Message 10
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Andy,
My guess in that you may have selected direct to a VOR or other waypoint instead
of the airport. Make sure to select the airport with a 4-digit nemonic, including
a the K, if it has one.
I had this issue flying to Duncan, OK once when I first got a newer GPS. I selected
DUC which was the VOR 5 miles southeast of the airport instead of KDUC.
Mitch - still in dreaming building stage...
----- Original Message -----
From: Andy Gold
To: rv-list@matronics.com
Sent: Sunday, June 03, 2007 12:31 PM
Subject: RV-List: Garmin 196 help
I just installed a Garmin 196 in place of my old Garmin 90. I liked
the 90. It did everything I wanted it to do perfectly and simply for
day VFR navigation. Just enter where you want to go and follow the
arrow and it always took me right over the center of the destination
airport. (I never used the map page) The only reason I gave it up was
because the database was 5-6 years old and I couldn't get an update.
So, I bought a 196. With all the raving about it here and on other
web sites, I looked forward to seeing how great it really was. (for what
I use it for I couldn't imagine how it could be any better, but at least
its updated with the new maps and AFDs)
Bottom line is the 196 has a really bad quirk that I don't like at
all, enough that if I can't find a solution I'm going to pull it out and
reinstall the relic 90. Following the arrow to a destination works great
from a distance, but when I get within about 10-15 miles from the
destination the arrow starts to skew over one way or the other. In
other words the arrow says that the destination is 30 degrees over to
the right, but I know the airport is straight ahead over the ridge. As
I get closer, this displacement gets worse and worse. If I pass the
airport the 196 does no correct. It keeps telling me to go straight or
in the completely wrong direction. If I pass the airport with the 90,
the arrow points to the tail, tells me to turn around and then guides
you directly there, just like it should. This was an issue flying into
Craig, CO a little while ago. I was unfamiliar with the area, so I
trusted and followed the 196, right past town with the Garmin telling me
to keep flying straight. I had to climb a couple thousand feet for a
better view, circle around, and find the airport the old fashioned way.
My question is for others flying a 196. Does yours do the same thing,
or does your heading indicator trustfully point to your destination from
wherever you are and from whatever direction your nose is pointed? Or,
do I have a bad unit? Or do I need to somehow program out this glitch,
or do I not know what I'm doing and need some dummy's book on how to use
a GPS?
Thanks,
Andy
--
Learn2fly www.chickashawings.com
Message 11
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| Subject: | Re: Breather run into exhaust |
Jeff,
Why do you have an oil separator if you don't reuse the oil in the first
place. What is the purpose of separating the oily air mix and then
discard both onto the exhaust pipe??? I'd remove the weight of the
useless contraption...
do not archive
----- Original Message -----
From: Jeff Dowling
To: rv-list@matronics.com
Sent: Monday, June 04, 2007 5:20 PM
Subject: Re: RV-List: Breather run into exhaust
<shempdowling2@earthlink.net>
I exit my breather exhaust within about an inch of my exhaust pipe but
still get an oily belly. Does this system directly tie into the
exhaust?
I also disconnected the return line from the seperator to the oil fill
and ran it to the other exhaust. I dont think I need the few drops of
sludge going back into my engine.
Jeff Shemp Dowling
rv6a 320hrs
n801bh@netzero.com wrote:
>
> Mike, exhaust venting is the way to go for a clean belly. There are
> several kits available to do this. Mr Gasket comes to mind and I use
> that one, it comes with a steel check valve to prevent any blowback
> into the crankcase. The kit comes with two of them but I only use
one
> in my applications so I have a spare. It's yours for the cost of
> freight, probably 5 bucks or so. Contact me at my web site if
> interested..
>
> do not archive
>
>
> Ben Haas
> N801BH
> www.haaspowerair.com
>
> -- "mbick" <mbick@carolina.rr.com> wrote:
>
> I was wondering if anyone ran their breather tube into the exhaust.
I
> have seen this done more and more lately on aerobatic planes where
the
> breather runs into exhaust. Granted they have some separation from
> direct crankcase breathing vie the inverted systems but vent none
the
> less into the exhaust. Any thoughts?
>
>
>
> Thanks
>
> Mike
>
> *
>
>
> tp://www.matronics.com/Navigator?RV-List
>
> tronics.com
>
>
> *
> *
>
>
> *
Message 12
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| Subject: | Re: Breather run into exhaust |
Do any of you race-engine guru's out there have any idea of how much of
a vacuum one can create this way? Just curious as to the suction effect
of the exhaust venturi...
do not archive
----- Original
Message -----
From: PittsS1@aol.com
To: rv-list@matronics.com
Sent: Monday, June 04, 2007 9:27 PM
Subject: Re: RV-List: Breather run into exhaust
there is positive pressure in the crank case if you can neutralize
that pressure the internal rotating parts will spin free ... resulting
in free horse power. the exhaust can create a lot of suction and
actually suck oil from the crank case ... be careful.
on a pumped up / modified I0-360 with a 4 into 1 exhaust i used a
stainless 1/2 in tube welded into the collector at 45 degree angle ...
plus ... a metered 'pill' to get the correct vacuum pressure. i
monitored oil consumption changing the orifice size until oil
consumption was normal. the house power increase was the most notable of
all previous mods.
yes ... a poor mans smoke system but no more oil on the belly ...
do it! lots of acro guys do ...
mike
-------------------------------------------------------------------------
-----
See what's free at AOL.com.
Message 13
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| Subject: | Re: RV transition training |
Bob,
Are you moving to NC? I was planning on flying with you out of Longmont
once I complete my -7. NC is a long way to travel to get instruction...
DD
On 6/6/07, renewhall2 <renewhall2@yahoo.com> wrote:
>
>
> Brian,
> I'm offering RV instruction in my -7. My info is:
>
> Bob Newhall, CFI airplanes & gliders
> Raleigh, NC (as of July 1, 2007)
> RV7, tailwheel, O360, c/s prop, $140/hr wet
>
> Contact:
> 303.819.1482 cell
> renewhall2@yahoo.com
> website: http://renewhall2.googlepages.com
>
> Bob
>
> --------
> Bob Newhall
> N829RV
> RV Transition Training
> Boulder, CO
> renewhall2.googlepages.com
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=116859#116859
>
>
Message 14
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| Subject: | Re: Breather run into exhaust (warning) |
One worry is that valve fails closed and cause the crankcase seals blow. That could
be very critical and losing the front crank seal could cause fire, loss of
oil pressure (engine power) and loss of visibility out the wind screen. It has
happened, not with a drag race crankcase evacuation valve, but from a blocked
breather.
If you use this system put a "whistle slot" into the tube. It is a slit along
the length in the rubber tube (a few inches) that is just held close by the natural
shape of the tube. If you get a blockage and pressure build the slot will
open up enough to allow some pressure to escape.
I think running the breather near the hot pipe, but outside works fine. This
is standard procedure on RV's. I usually transition the last few inches from rubber
to metal to sit next to the hot pipe.
Also if the suction is too great it can suck out more air and oil desirable.
When using the technique of burning the breather air/oil on the out side of the
pipe, it is recommended you cut the end of the tube at an angle into free air
stream. If you have air going across a flat tube or angled down stream you
can really cause excess suck on the breather and pull oil out of the plane.
This
>>>>>> \|
Not this
>>>>>> |/
However the drag race set up has you angle the air down stream. That may cause
lots of suction but if the valve regulates the suck that is fine but as I say
if that valve fails closed it could be bad news with out a whistle slot in the
hose.
Cheeres George ATP/CFI-II-ME
---------------------------------
Ready for the edge of your seat? Check out tonight's top picks on Yahoo! TV.
Message 15
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| Subject: | Re: RV transition training |
Sounds like you ought to schedule some time this month!
Ron Lee
Do not archive
----- Original Message -----
From: David Dalton
To: rv-list@matronics.com
Sent: Wednesday, June 06, 2007 1:07 PM
Subject: Re: RV-List: Re: RV transition training
Bob,
Are you moving to NC? I was planning on flying with you out of
Longmont once I complete my -7. NC is a long way to travel to get
instruction...
DD
On 6/6/07, renewhall2 <renewhall2@yahoo.com> wrote:
Brian,
I'm offering RV instruction in my -7. My info is:
Bob Newhall, CFI airplanes & gliders
Raleigh, NC (as of July 1, 2007)
RV7, tailwheel, O360, c/s prop, $140/hr wet
Contact:
303.819.1482 cell
renewhall2@yahoo.com
website: http://renewhall2.googlepages.com
Bob
--------
Bob Newhall
N829RV
RV Transition Training
Boulder, CO
renewhall2.googlepages.com
Message 16
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| Subject: | Breather run into exhaust (warning) |
George,
What you are saying on the breather tube is to cut the end such
that a slight pressurization occurs rather than a slight suction on the
end ??? If the tube is inside the cowl, will it make a difference?
Mine is exiting just in front of the engine mount for my "9-A" (tie
wrapped to the mount) and about 1/4" above the exhaust pipe. The end of
the tube is sort of angling toward the rear of the a/c.
Jim
Message 17
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| Subject: | Re: Breather run into exhaust (warning) |
You probably have this envisioned incorrectly. The valve is a high temp
metal check valve to prevent a flame from traveling back up into the cra
nkcase during a major backfire in the exhaust pipe. As long as the engin
e is running there will ALWAYS be suction through the valve and vent sys
tem. I believe you think at some times there is pressure traveling up th
e vent line,,, there isn't during normal running. One poster said all he
did was weld a 1/2" stainless tube to the exhaust pipe and didn't even
use a valve, I hope he chimes back in to report that in that configurati
on he has experienced no issues with lighting off the vapor coming from
the crankcase. Mike did contact me through my website asking for my extr
a valve but once I explained they are available at any speed shop in mos
t towns he elected to take a few minutes to buy one locally. By doing th
at he will end up with two valves and he and a buddy will be all set up
for less then 17 dollars each. Small price for a sure fix to a dirty oil
y belly. By just mounting your vent line close to the tail pipe you get
the benefit of burning off some blowby oil but some will still get on th
e belly and you don't get the positive vacuum that a crackcase evacuatio
n system creates. To answer the question of how much vacuum is produced,
during initial testing on my plane I have seen 16 inches of vacuum dur
ing full power on takeoff. My motor is a 347 cu in but I do turn it 4500
rpm during the climb. I am guessing a 320/360 cu in Lyc @ 2700 should p
roduce at least 10-12 inches, way more then enough to draw crankcase pre
ssure from your motor.IMHO
do not archive
Ben Haas
N801BH
www.haaspowerair.com
-- <gmcjetpilot@yahoo.com> wrote:
One worry is that valve fails closed and cause the crankcase seals blow.
That could be very critical and losing the front crank seal could cause
fire, loss of oil pressure (engine power) and loss of visibility out th
e wind screen. It has happened, not with a drag race crankcase evacuatio
n valve, but from a blocked breather. If you use this system put a "whi
stle slot" into the tube. It is a slit along the length in the rubber tu
be (a few inches) that is just held close by the natural shape of the tu
be. If you get a blockage and pressure build the slot will open up enoug
h to allow some pressure to escape. I think running the breather near t
he hot pipe, but outside works fine. This is standard procedure on RV's.
I usually transition the last few inches from rubber to metal to sit ne
xt to the hot pipe. Also if the suction is too great it can suck out mor
e air and oil desirable. When using the technique of burning the breath
er air/oil on the out side of the pipe, it is recommended you cut the en
d of the tube at an angle into free air stream. If you have air going ac
ross a flat tube or angled down stream you can really cause excess suck
on the breather and pull oil out of the plane. This >>>>>> \| Not this >
>>>>> |/ However the drag race set up has you angle the air down stream.
That may cause lots of suction but if the valve regulates the suck that
is fine but as I say if that valve fails closed it could be bad news wi
th out a whistle slot in the hose. Cheeres George ATP/CFI-II-MEReady fo
========================
========================
========================
========================
========================
===================
<html><P>You probably have this envisioned incorrectly. The valve is a h
igh temp metal check valve to prevent a flame from traveling back u
p into the crankcase during a major backfire in the exhaust pipe. As lon
g as the engine is running there will ALWAYS be suction through the valv
e and vent system. I believe you think at some times there is pressure t
raveling up the vent line,,, there isn't during normal running. One
poster said all he did was weld a 1/2" stainless tube to the exhaust pi
pe and didn't even use a valve, I hope he chimes back in to report that
in that configuration he has experienced no issues with lighting off the
vapor coming from the crankcase. Mike did contact me through my website
asking for my extra valve but once I explained they are available at an
y speed shop in most towns he elected to take a few minutes to buy one l
ocally. By doing that he will end up with two valves and he and a buddy
will be all set up for less then 17 dollars each. Small price for a sure
fix to a dirty oily belly. By just mounting your vent line close to the
tail pipe you get the benefit of burning off some blowby oil but some w
ill still get on the belly and you don't get the positive vacuum that a
crackcase evacuation system creates. To answer the question of how
much vacuum is produced, during initial testing on my plane I have
seen 16 inches of vacuum during full power on takeoff. My motor is
a 347 cu in but I do turn it 4500 rpm during the climb. I am guessing a
320/360 cu in Lyc @ 2700 should produce at least 10-12 inches, way
more then enough to draw crankcase pressure from your motor.IMHO</P>
<P>do not archive</P>
<P><BR><BR><BR>Ben Haas<BR>N801BH<BR>www.haaspowerair.com<BR><BR>--
<gmcjetpilot@yahoo.com> wrote:<BR></P>
<DIV>One worry is that valve fails closed and cause the crankcase seals
blow. That could be very critical and losing the front crank seal could
cause fire, loss of oil pressure (engine power) and loss of visibil
ity out the wind screen. It has happened, not with a drag race crankcase
evacuation valve, but from a blocked breather. </DIV>
<DIV> </DIV>
<DIV>If you use this system put a "whistle slot" into the tube. It
is a slit along the length in the rubber tube (a few inches) that i
s just held close by the natural shape of the tube. If you get a blockag
e and pressure build the slot will open up enough to allow som
e pressure to escape. </DIV>
<DIV> </DIV>
<DIV>I think running the breather near the hot pipe, but outside works f
ine. This is standard procedure on RV's. I usually transition the last f
ew inches from rubber to metal to sit next to the hot pipe.</DIV>
<DIV> </DIV>
<DIV>Also if the suction is too great it can suck out more air
and oil desirable. When using the technique of burning the&n
bsp;breather air/oil on the out side of the pipe, it is recommended
you cut the end of the tube at an angle into free air stream.
If you have air going across a flat tube or angled down stream you
can really cause excess suck on the breather and pull oil out of t
he plane.</DIV>
<DIV> </DIV>
<DIV>This </DIV>
<DIV>>>>>>> \|</DIV>
<DIV> </DIV>
<DIV>Not this </DIV>
<DIV>>>>>>> |/</DIV>
<DIV> </DIV>
<DIV>However the drag race set up has you angle the air down stream
. That may cause lots of suction but if the valve regulates the suck tha
t is fine but as I say if that valve fails closed it could be bad n
ews with out a whistle slot in the hose. </DIV>
<DIV> </DIV>
<DIV>Cheeres George ATP/CFI-II-ME</DIV>
<P>
<HR SIZE=1>
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48220/*http://tv.yahoo.com/">Check out tonight's top picks</A> on Yahoo!
TV. <PRE><B><FONT face="courier new,courier" color=#000000 size=2
>
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tronics.com</A>
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<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
Message 18
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| Subject: | Re: Breather run into exhaust (warning) |
I don't see how a vacuum created by the hot exhaust gasses could block
the breather tube. Nor should an exhaust generated vacuum be able to
pressurize the crankcase...
Granted, there were incidents where the end of the breather stuck out in
the cold below the cowling and froze shut, causing a pressure buildup
inside the case, which a whistle slot in a warm location will prevent.
Oil loss *may* need to be addresses on any individual engine by
regulating this crankcase vacuum depending on its health, but if the
piston rings seal well, then there should not be to much blowby anyway.
----- Original Message -----
From: gmcjetpilot@yahoo.com
To: rv-list@matronics.com
Sent: Wednesday, June 06, 2007 11:55 AM
Subject: RV-List: Re: Breather run into exhaust (warning)
One worry is that valve fails closed and cause the crankcase seals
blow. That could be very critical and losing the front crank seal could
cause fire, loss of oil pressure (engine power) and loss of visibility
out the wind screen. It has happened, not with a drag race crankcase
evacuation valve, but from a blocked breather.
If you use this system put a "whistle slot" into the tube. It is a
slit along the length in the rubber tube (a few inches) that is just
held close by the natural shape of the tube. If you get a blockage and
pressure build the slot will open up enough to allow some pressure to
escape.
I think running the breather near the hot pipe, but outside works
fine. This is standard procedure on RV's. I usually transition the last
few inches from rubber to metal to sit next to the hot pipe.
Also if the suction is too great it can suck out more air and oil
desirable. When using the technique of burning the breather air/oil on
the out side of the pipe, it is recommended you cut the end of the tube
at an angle into free air stream. If you have air going across a flat
tube or angled down stream you can really cause excess suck on the
breather and pull oil out of the plane.
This
>>>>>> \|
Not this
>>>>>> |/
However the drag race set up has you angle the air down stream. That
may cause lots of suction but if the valve regulates the suck that is
fine but as I say if that valve fails closed it could be bad news with
out a whistle slot in the hose.
Cheeres George ATP/CFI-II-ME
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Message 19
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| Subject: | Re: Breather run into exhaust (warning) |
Jim,
You should be ok with this setup. You should see a slight vacuum on its
end. Do you also have a small whistle slot in the tube? You may not need
it if your tube ends inside the warm cowling exhaust air.
----- Original Message -----
From: James H Nelson
To: rv-list@matronics.com
Sent: Wednesday, June 06, 2007 2:53 PM
Subject: RV-List: Breather run into exhaust (warning)
George,
What you are saying on the breather tube is to cut the end
such
that a slight pressurization occurs rather than a slight suction on
the
end ??? If the tube is inside the cowl, will it make a difference?
Mine is exiting just in front of the engine mount for my "9-A" (tie
wrapped to the mount) and about 1/4" above the exhaust pipe. The end
of
the tube is sort of angling toward the rear of the a/c.
Jim
Message 20
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| Subject: | Re: Breather run into exhaust (warning) |
you guys make this so difficult ... hang around the acro guys, this isnt new
to them nor is it rocket science.
mike
************************************** See what's free at http://www.aol.com.
Message 21
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| Subject: | Re: Breather run into exhaust (warning) |
Mike,
I totally agree with you! Why reinvent the wheel that the acrobats use
already... do not archive
----- Original Message -----
From: PittsS1@aol.com
To: rv-list@matronics.com
Sent: Wednesday, June 06, 2007 5:16 PM
Subject: Re: RV-List: Re: Breather run into exhaust (warning)
you guys make this so difficult ... hang around the acro guys, this
isnt new to them nor is it rocket science.
mike
-------------------------------------------------------------------------
-----
See what's free at AOL.com.
Message 22
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| Subject: | Re: Grand Canyon was Rocky Mountain route: Noob question |
> I plan to return home to Virginia via the Grand Canyon and
> Albuquerque, Dodge City, KS, St. Louis, MO and eastbound from
> there. My question pertains mostly to getting from Cody to Flagstaff.
Bill,
To fly the Grand Canyon you will need the NACO chart "Grand Canyon
VFR Aeronautical Chart (General Aviation)". The latest edition and
date of the chart is 3rd Edition April 19, 2001 (yes 2001 is the
latest edition).
This chart tells GA flier (non-commercial tour operators) where they
can fly, general very high and above the rim. There are no fly zones
extending up tp 14,500 ft to protect the birds.
I flew the canyon on a beautifully clear, cloudless, hot, mid
afternoon day in late September 2004. It does not look as good at
10,000 ft as the profession photographers who shot early in the
morning or late afternoon with big puffy clouds.
To fly it, I added about 5 way points to my GPS and created a route
so I could fly with having to do a lot of "navigation" during the
flight. I started at Kingman, AZ (IGM) and flew to Winslow, AZ (INW)
for the night.
There are no good places to land if your engine acts up. Still I
would do it again.
Richard Reynolds
RV-6A, N841RV
Norfolk, VA
Message 23
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| Subject: | Wingtip rib question |
Hey there,
I'm finishing the wingtips on my -8. Part number W-412 is the wingtip
rib at the trailing edge. The plans call for the flange to face
inboard, toward the aileron. I've heard people then fill the opening of
the wingtip, so that it is smooth.
My question is, rather than doing it that way, why not put the flange
facing outboard. I realize that the rivets will be tougher to buck, but
I'm going to over-countersink them and glass them over anyway. So why
not use pulled rivets?
Thanks,
Tim Cone
Message 24
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| Subject: | Re: Breather run into exhaust |
In a message dated 6/6/2007 11:15:46 AM Central Daylight Time,
klwerner@comcast.net writes:
Why do you have an oil separator if you don't reuse the oil in the first
place. What is the purpose of separating the oily air mix and then discard both
onto the exhaust pipe??? I'd remove the weight of the useless contraption...
>>>
Re-using the oil is not the issue, which many say is a bad idea as it routes
nasty stuff back into the sump- keeping the "dirty side" less so is. Better
(IMHO) to collect as much blow-by crud that might normally blow out onto yer
belly and discard it with the old oil at oil change time. See:
_http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=5172_
(http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=5172)
Click on >>Next Entry>> for next 3 entries and on fotos for bigger view.
Here's the "proof in da puddin' ":
_http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=5261_
(http://websites.expercraft.com/n51pw/index.php?q=log_entry&log_id=5261)
Just an option, but this has really worked out quite nicely after 415+ hours
operation on my plane. Cheap, simple, effective...
>From The PossumWorks in TN,
Mark
_http://websites.expercraft.com/n51pw/_
(http://websites.expercraft.com/n51pw/)
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