Today's Message Index:
----------------------
1. 12:13 AM - Re: Re: Plenum closure (& CHT)(& Long) (Jeff Point)
2. 04:39 AM - Re: Re: Plenum closure (& CHT)(& Long) (LarryRobertHelming)
3. 05:42 AM - Re: Orange County CA Tax Assessor, Redux (Bob 1)
4. 05:50 AM - Re: Re: Plenum closure (& CHT)(& Long) (Fiveonepw@aol.com)
5. 06:07 AM - Re: Hangar Usage (Stewart, Michael (ISS Atlanta))
6. 07:04 AM - Re: Hangar Usage (Gary Zilik)
7. 07:16 AM - Re: Hangar Usage (Rick Galati)
8. 07:30 AM - Re: Hangar Usage (Tim Bryan)
9. 12:48 PM - Shortening Exhaust Pipes (DAVID REEL)
10. 01:00 PM - Re: Shortening Exhaust Pipes (Sam Buchanan)
11. 01:20 PM - Re-using oil hose fittings (Scott Vanartsdalen)
12. 01:58 PM - Attitude indicator for sale (Fiveonepw@aol.com)
13. 02:30 PM - Re: Shortening Exhaust Pipes (Stewart, Michael (ISS Atlanta))
14. 02:55 PM - Re: Shortening Exhaust Pipes (RGray67968@aol.com)
15. 03:16 PM - Re: Re-using oil hose fittings (linn walters)
16. 03:39 PM - Re: Re-using oil hose fittings (Phil Sisson, Litchfield Aerobatic Club)
17. 04:27 PM - Re: Shortening Exhaust Pipes (Stein Bruch)
18. 04:40 PM - [PLEASE READ NOW] - Addressing Upgrade At Matronics TONIGHT! (dralle@matronics.com (Matt Dralle))
19. 04:44 PM - Re: Shortening Exhaust Pipes (Larry Bowen)
20. 04:44 PM - Re: Shortening Exhaust Pipes (Phil Sisson, Litchfield Aerobatic Club)
21. 04:50 PM - Re: Shortening Exhaust Pipes (Kosta Lewis)
22. 04:56 PM - Re: Re-using oil hose fittings (Scott Vanartsdalen)
23. 05:15 PM - Re: Re-using oil hose fittings (Hopperdhh@aol.com)
24. 05:44 PM - Re: Shortening Exhaust Pipes (J. Rion Bourgeois)
Message 1
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| Subject: | Re: Plenum closure (& CHT)(& Long) |
--> RV-List message posted by: Jeff Point <jpoint@mindspring.com>
I'm not sure that reducing the volume above the cylinders is the
advantage. I think being able to seal much better than with baffles is
what makes the difference. With a good plenum (and plenty of RTV) you
can reduce the air leaks inherent with airseal baffles, and force every
little bit of air to do some cooling on it's way through the cowling.
I'm not expert either, but I have a plenum and it works well.
Jeff Point
GMC wrote:
>Seems to me the cooling depends mostly on the airflow created by the
>pressure differential above/below the cylinders. I can't see how reducing
>the volume above the cylinders with a box type plenum will change that
>pressure (anyone measured that).
>
>
>
>
>
Message 2
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| Subject: | Re: Plenum closure (& CHT)(& Long) |
--> RV-List message posted by: "LarryRobertHelming" <lhelming@sigecom.net>
I agree with Jeff -- reducing the volume of space above the cylinders will
not make a difference except maybe help ensure the same pressures are
present at all places within the space; but, this area is limited to be
small anyway with the top cowling being just an inch or so above the plenum.
As Jeff states, not letting any of the air escape the plenum without doing
its cooling job is more important. And first or second to that is getting
the air into the plenum and then out the cowling bottom, which must be a
lower pressure area, while not allowing the lower pressure to be un-lowered
with leaks around the carburetor intake or other places around the cowling
fitting with the fuselage and/or baffling air inlets.
Indiana Larry
Evansville, Indiana (just north of western Kentucky)
----- Original Message -----
From: "Jeff Point" <jpoint@mindspring.com>
Subject: Re: RV-List: Re: Plenum closure (& CHT)(& Long)
> --> RV-List message posted by: Jeff Point <jpoint@mindspring.com>
>
> I'm not sure that reducing the volume above the cylinders is the
> advantage. I think being able to seal much better than with baffles is
> what makes the difference. With a good plenum (and plenty of RTV) you
> can reduce the air leaks inherent with airseal baffles, and force every
> little bit of air to do some cooling on it's way through the cowling.
>
> I'm not expert either, but I have a plenum and it works well.
>
> Jeff Point
>
> GMC wrote:
>
> >Seems to me the cooling depends mostly on the airflow created by the
> >pressure differential above/below the cylinders. I can't see how reducing
> >the volume above the cylinders with a box type plenum will change that
> >pressure (anyone measured that).
> >
> >
> >
> >
> >
>
>
Message 3
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| Subject: | Re: Orange County CA Tax Assessor, Redux |
--> RV-List message posted by: "Bob 1" <rv3a.1@comcast.net>
> --> RV-List message posted by: "Tim Bryan" <flyrv6@bryantechnology.com>
>
> Have you considered registering this plane in another state? Might help
> with liability too if registered to a Nevada Corp or other entity in
another
> state.
>
> Tim
==============================================
FWIW Department....
When the great state of Missouri got on my case about an airplane that I
never brought into the sate, they cared not where it was for tax purposes.
Their position to me simply was, as a resident, I was obliged to pay taxes
on ALL property..... no matter where on earth the property might physically
exist.
ARRRGH !!!! <g>
I do hope YMMV.
Bob - living within sight of the Kansas border
do not archive
Message 4
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| Subject: | Re: Plenum closure (& CHT)(& Long) |
--> RV-List message posted by: Fiveonepw@aol.com
> I think being able to seal much better than with baffles is
> what makes the difference. With a good plenum (and plenty of RTV) you
> can reduce the air leaks inherent with airseal baffles, and force every
> little bit of air to do some cooling on it's way through the cowling.
>>>>
Howdy Jeff!
That was one of the things I was most interested in- My plenums have a LOT of
leakage, particularly where it was difficult shaping the pieces along the
base of the cylinders- I originally didn't seal ANY of it since initial flight
testing was in winter, and if it needed better sealing right away, or started
overheating as summer came on, I could easily RTV all the holes up to see how
much it helped. Didn't have to as I really didn't see any significant change in
CHTs at all as ambient temps climbed into the ninetys. All four are
monitored via EIS... Oddly, #1 is coldest & #2 hottest, with maybe 75 deg difference
in climbs, with #2 sometimes hitting 425 where the EIS limit is set. Very
rarely have I had to level off to lower the temps, and my normal regimen is to
get high as fast as possible to cooler air in the summer. They get closer in
cruise, about 30 deg difference with 3&4 in between.
See ya at OSH! Hopefully you won't recognize the plane since it better be
painted by then!
Mark
Message 5
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--> RV-List message posted by: "Stewart, Michael (ISS Atlanta)" <mstewart@iss.net>
4 easily with high/low wings.
4 easily rv's
This will allow for about 20' depth in the back for tools, storage
lockers, potty room or what ever.
One of our 48 square hangers has a twin Comanche, 2 Sukois, and an Extra
300, plus depth in the back. We have a row of 8 of these 48 square
hangers and 4 of the hangers have 4 planes in em.
You will have to move the front plane to get to the one behind it.
Mike
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com]
Subject: RV-List: Hangar Usage
--> RV-List message posted by: "" <tx_jayhawk@excite.com>
Do Not Archive All, Can anyone provide some thoughts on how many small
aircraft (RV/Cessna/Piper types) might fit in a 48x48 hangar? I am
looking into purchasing one, and I was trying to plan accordingly. I
know it depends on high wing/low wing, but I am trying to get a rough
idea. I am assuming three planes could probably fit? Also, any bits of
advice that might be had when renting spaces to others. Appreciate any
help that can be provided (off-line if necessary). Thanks,ScottQB
(Cheater) fuse comingwww.scottsrv7a.com
Join Excite! - http://www.excite.com
The most personalized portal on the Web!
Message 6
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| Subject: | Re: Hangar Usage |
--> RV-List message posted by: Gary Zilik <zilik@excelgeo.com>
Depend on how hi the ceiling is. You can pile a lot of RVs in a 48x48
hangar.
tx_jayhawk@excite.com wrote:
> --> RV-List message posted by: "" <tx_jayhawk@excite.com>
>
> Do Not Archive All, Can anyone provide some thoughts on how many small aircraft (RV/Cessna/Piper types) might fit in a 48x48 hangar? I am looking into purchasing one, and I was trying to plan accordingly. I know it depends on high wing/low wing, but I am trying to get a rough idea. I am assuming three planes could probably fit? Also, any bits of advice that might be had when renting spaces to others. Appreciate any help that can be provided (off-line if necessary). Thanks,ScottQB (Cheater) fuse comingwww.scottsrv7a.com
>
> Join Excite! - http://www.excite.com
> The most personalized portal on the Web!
>
>
>
>
>
>
>
Message 7
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| Subject: | Re: Hangar Usage |
--> RV-List message posted by: Rick Galati <rick6a@yahoo.com>
I share free standing 45X48 insulated hangar. BTW Craig,
(hangarmate), I know you monitor this list so feel free to
jump in with any additional comments. The bi-fold door
is 43 wide. Inside, you will find my RV-6A, my C-150 and
his C-172. Both of us have workbenches and assorted storage
shelves on our respective side of the hangar. All three
airplanes fit well enough to walk around with the door closed.
We share the electric bill and supply our own portable
propane tanks if one of us wants to work in cold weather.
If one or the other of us is not present, we do not allow
visitors access to the others space and tools. Believe me
at some small airports, someone is always coming around
looking to borrow something, and sometimes they will be
people you dont recognize. The key is compatability. Its
not exactly like sharing a house but being respectful of the
other persons space is not only the right thing to do, but is paramount if harmony
is to reign so pick your partner(s) wisely!
Rick Galati RV-6A finished, not yet flying
Can anyone provide some thoughts on how many
small aircraft (RV/Cessna/Piper types) might
fit in a 48x48 hangar? I am looking into
purchasing one, and I was trying to plan accordingly.
I know it depends on high wing/low wing, but I am trying
to get a rough idea. I am assuming three planes could
probably fit? Also, any bits of advice that might be
had when renting spaces to others. Appreciate any help
that can be provided (off-line if necessary).
Thanks,ScottQB (Cheater) fuse comingwww.scottsrv7a.com
Message 8
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| Subject: | Re: Hangar Usage |
--> RV-List message posted by: "Tim Bryan" <flyrv6@bryantechnology.com>
Recommend you check on insurance also. I owned a 50 X 60 hangar and was
told by my insurance if I didn't put hangar keepers insurance (very
expensive) they would not insure it with my airplane in there along with
others. I got told if I had anything in there they would drop my coverage.
Or I could be the only one in there. I sold the hangar.
Tim - RV-6
Redmond, OR
-------Original Message-------
From: tx_jayhawk@excite.com
Subject: RV-List: Hangar Usage
--> RV-List message posted by: "" <tx_jayhawk@excite.com>
Do Not Archive All, Can anyone provide some thoughts on how many small
aircraft (RV/Cessna/Piper types) might fit in a 48x48 hangar? I am looking
into purchasing one, and I was trying to plan accordingly. I know it
depends on high wing/low wing, but I am trying to get a rough idea. I am
assuming three planes could probably fit? Also, any bits of advice that
might be had when renting spaces to others. Appreciate any help that can be
provided (off-line if necessary). Thanks,ScottQB (Cheater) fuse comingwww
scottsrv7a.com
Join Excite! - http://www.excite.com
The most personalized portal on the Web!
Message 9
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| Subject: | Shortening Exhaust Pipes |
--> RV-List message posted by: "DAVID REEL" <dreel@cox.net>
I'm thinking of shortening my Vetterman cross-over exhaust pipes so they terminate
in the vertical plane of the firewall. This would allow me to insert the
bottom cowl's bottom hinge pins without the interference I currently experience
on my RV8A. Is there any down side to this approach? Are there other solutions?
I have positioned my pipes to have 1/2" clearance from the fuselage cooling air
exit ramp and engine mount tubes. They are about 3/8" too low to permit a straight
shot at the hinge pin. There is a 3" space between the inboard end of
the hinge and the pipe but the pins are too stiff to bend much over that short
distance. I presume that reducing the pipe-to-exit-ramp gap, to 1/4" say, is
not an option as the pipe would hit the ramp during engine lurches & the exhaust
would drum against the fuselage. I read in Kent Paser's book that he shortened
the pipe to improve scavenging of the outlet air & it appears that the firewall
plane would be my RV8A's air-flow equivalent of about where his were placed.
So I'm wondering if anyone has had or heard of any other peoples experience
with this type of a solution?
Dave Reel - RV8A
Message 10
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| Subject: | Re: Shortening Exhaust Pipes |
--> RV-List message posted by: Sam Buchanan <sbuc@hiwaay.net>
DAVID REEL wrote:
> --> RV-List message posted by: "DAVID REEL" <dreel@cox.net>
>
> I'm thinking of shortening my Vetterman cross-over exhaust pipes so
> they terminate in the vertical plane of the firewall. This would
> allow me to insert the bottom cowl's bottom hinge pins without the
> interference I currently experience on my RV8A. Is there any down
> side to this approach? Are there other solutions?
>
> I have positioned my pipes to have 1/2" clearance from the fuselage
> cooling air exit ramp and engine mount tubes. They are about 3/8"
> too low to permit a straight shot at the hinge pin. There is a 3"
> space between the inboard end of the hinge and the pipe but the pins
> are too stiff to bend much over that short distance. I presume that
> reducing the pipe-to-exit-ramp gap, to 1/4" say, is not an option as
> the pipe would hit the ramp during engine lurches & the exhaust would
> drum against the fuselage. I read in Kent Paser's book that he
> shortened the pipe to improve scavenging of the outlet air & it
> appears that the firewall plane would be my RV8A's air-flow
> equivalent of about where his were placed. So I'm wondering if
> anyone has had or heard of any other peoples experience with this
> type of a solution?
Dave, the RV-6 is different from the RV-8A in the firewall area but I
can tell you about my pipe shortening experience. The Vetterman pipes on
my plane originally had a significant turndown just aft of the firewall.
I decided to pick up some free speed (!) by cutting off the turndowns so
the pipes wouldn't protrude below the cowl vent.
Result was considerably more noise in the cabin and the necessity of
periodically removing gray exhaust residue from the belly of the plane.
There was no measurable improvement in airspeed or engine
cooling.......but I have convinced my hangar mate that the plane is
faster! ;-)
In retrospect, I would leave the hacksaw in the toolbox. :-)
Sam Buchanan (RV-6, 615 hrs.....thank goodness for Lightspeed headsets...)
http://thervjournal.com
Message 11
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| Subject: | Re-using oil hose fittings |
--> RV-List message posted by: Scott Vanartsdalen <svanarts@yahoo.com>
I have a question about oil hoses. I need to make a longer hose because I'm going
to move my oil cooler to the front baffle. Can I take the fittings off the
old hose and put them on a new hose? Thanks.
--
Scott VanArtsdalen
RV-4 N311SV, FLYING!!
When a man does all he can
though it succeeds not well,
blame not him that did it."
-- George Washington
Message 12
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| Subject: | Attitude indicator for sale |
--> RV-List message posted by: Fiveonepw@aol.com
I have a Falcon attitude indicator 8 degree tilt, that I bought new at
OshKosh this year, for sale. It works fine in my RV4 But, I decided to go with
something else. I also have an Edo Aire vacuum pump and a 2 1/4 in. indicator.
I
haven't removed the regulator yet but will soon. I paid $350 for the Att. Ind.
If anyone on this list is interested I will sell all three for $300. plus
shipping. I will leave this offer open until 1/10 before advertising elsewhere.
Contact me offlist, Please.
Thanks and Do Not Archive , Mike Kellems mkellems@tnweb.com
Message 13
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| Subject: | Shortening Exhaust Pipes |
--> RV-List message posted by: "Stewart, Michael (ISS Atlanta)" <mstewart@iss.net>
I cut mine, turned my smoke system on, and in about 2 seconds, the
cockpit was full!.
I welded them back on and the problem was solved.
I would NOT cut them.
Mike
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of DAVID REEL
Subject: RV-List: Shortening Exhaust Pipes
--> RV-List message posted by: "DAVID REEL" <dreel@cox.net>
I'm thinking of shortening my Vetterman cross-over exhaust pipes so they
terminate in the vertical plane of the firewall. This would allow me to
insert the bottom cowl's bottom hinge pins without the interference I
currently experience on my RV8A. Is there any down side to this
approach? Are there other solutions?
I have positioned my pipes to have 1/2" clearance from the fuselage
cooling air exit ramp and engine mount tubes. They are about 3/8" too
low to permit a straight shot at the hinge pin. There is a 3" space
between the inboard end of the hinge and the pipe but the pins are too
stiff to bend much over that short distance. I presume that reducing
the pipe-to-exit-ramp gap, to 1/4" say, is not an option as the pipe
would hit the ramp during engine lurches & the exhaust would drum
against the fuselage. I read in Kent Paser's book that he shortened the
pipe to improve scavenging of the outlet air & it appears that the
firewall plane would be my RV8A's air-flow equivalent of about where his
were placed. So I'm wondering if anyone has had or heard of any other
peoples experience with this type of a solution?
Dave Reel - RV8A
Message 14
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| Subject: | Re: Shortening Exhaust Pipes |
--> RV-List message posted by: RGray67968@aol.com
Cut the exhaust pipes??? I cut the Vetterman exhaust on my RV6 as Sam
described. Not sure if it's any louder in the cockpit (Lightspeeds) but my buds
tell
me it sounds great from outside :
). Mine are about an inch aft of the
firewall but no longer hang 'out in the breeze' and I know my 6 is a tad faster
than
it was :
). I wipe down the 'exhaust film' from my belly with simple green
about every 10 hours or so.....takes about 1 minute. And, I'd say there's no
increase in the film since my pipes were cut. Yes, I'd do the same on my next
plane. Oh yea, I don't have a smoke system like Mike does......if I did I'd still
leave the pipes short and just wear a gas mask :
)
Another Option: Not sure if your 8 is painted yet or not, but, if you don't
want to shorten the pipes, I recommend REMOVING the lower hinges and installing
a doubler to the fuse where the hinges 'were' with
platenuts/screws/tinnermans or camlocks. Piece of cake removing the cowl this way
and you don't have the
problem of broken hinge eyelets......and I've seen LOTS of eyelets broken in
this area......just ask around.
Rick Gray in Ohio at the Buffalo Farm
http://groups.yahoo.com/group/OhioValleyRVators/
for the archives
I cut mine, turned my smoke system on, and in about 2 seconds, the
cockpit was full!.
I welded them back on and the problem was solved.
I would NOT cut them.
Mike
Message 15
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| Subject: | Re: Re-using oil hose fittings |
--> RV-List message posted by: linn walters <lwalters2@cfl.rr.com>
That depends on the hose ends. Some are crimped and can't be re-used.
Aeroquip (look on the fitting) fittings are reuseable. The best thing
to do is order the mandrel for the size fitting (again, look at the
fitting .... -6, -8, -10 are most common). Do not assemble the new hose
without a mandrel or some other guide. You can use a drill bit and a
straight fitting to accomplish the same thing. Use the drill shank.
Aircraft Spruce has a great page on making hoses.
Linn
do not archive
Scott Vanartsdalen wrote:
>--> RV-List message posted by: Scott Vanartsdalen <svanarts@yahoo.com>
>
>I have a question about oil hoses. I need to make a longer hose because I'm going
to move my oil cooler to the front baffle. Can I take the fittings off the
old hose and put them on a new hose? Thanks.
>
>
>--
>Scott VanArtsdalen
>RV-4 N311SV, FLYING!!
>
> When a man does all he can
> though it succeeds not well,
> blame not him that did it."
> -- George Washington
>
>
>
>
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Message 16
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| Subject: | Re: Re-using oil hose fittings |
--> RV-List message posted by: "Phil Sisson, Litchfield Aerobatic Club" <sisson@consolidated.net>
Scott Vanartsdalen wrote:
>--> RV-List message posted by: Scott Vanartsdalen <svanarts@yahoo.com>
>
>I have a question about oil hoses. I need to make a longer hose because I'm going
to move my oil cooler to the front baffle. Can I take the fittings off the
old hose and put them on a new hose? Thanks.
>
>
>--
>Scott VanArtsdalen
>RV-4 N311SV, FLYING!!
>
>
They most likely can be re-used unless they were specially made by
Swaging them on...
Phil in Illinois
do not archive
Message 17
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| Subject: | Shortening Exhaust Pipes |
--> RV-List message posted by: "Stein Bruch" <stein@steinair.com>
I feel your pain having burnt my various fingers/hands more than once.
There is one REALLY Good solution...Use camlocks or skybolts fasteners. No
more burnt/scraped hands, no more cussing, and only about 15 seconds of
work.
Did it on mine and I'll never go back to hinges there or on the top of the
cowl either.
Just my 2 cents!
Cheers,
Stein.
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com]On Behalf Of DAVID REEL
Subject: RV-List: Shortening Exhaust Pipes
--> RV-List message posted by: "DAVID REEL" <dreel@cox.net>
I'm thinking of shortening my Vetterman cross-over exhaust pipes so they
terminate in the vertical plane of the firewall. This would allow me to
insert the bottom cowl's bottom hinge pins without the interference I
currently experience on my RV8A. Is there any down side to this approach?
Are there other solutions?
I have positioned my pipes to have 1/2" clearance from the fuselage cooling
air exit ramp and engine mount tubes. They are about 3/8" too low to permit
a straight shot at the hinge pin. There is a 3" space between the inboard
end of the hinge and the pipe but the pins are too stiff to bend much over
that short distance. I presume that reducing the pipe-to-exit-ramp gap, to
1/4" say, is not an option as the pipe would hit the ramp during engine
lurches & the exhaust would drum against the fuselage. I read in Kent
Paser's book that he shortened the pipe to improve scavenging of the outlet
air & it appears that the firewall plane would be my RV8A's air-flow
equivalent of about where his were placed. So I'm wondering if anyone has
had or heard of any other peoples experience with this type of a solution?
Dave Reel - RV8A
Message 18
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| Subject: | [PLEASE READ NOW] - Addressing Upgrade At Matronics TONIGHT! |
--> RV-List message posted by: dralle@matronics.com (Matt Dralle)
Dear Listers,
Tonight, Friday 1/7/2005 at 7pm PDT, I will be working with my Internet
Service Provider to upgrade to a larger IP subnet. I will be
re-addressing all of the machines on the network including the
Matronics Web Server and Matronics Email Server at that time. Name
Service will be updated at that time as well and most things should
work again pretty quick. There may be some bounced email for a few hours
or even a day or so as the new name-to-ip-address resolutions propagate
into the depths of the Internet.
If you have problems posting a message to one of the Lists or get a
bounced message back, please wait a couple of hours and try sending it
again. Generally, access to the web site should work within 1-hour of
the update or around 8pm PDT.
Hopefully the transition will go smoothly and you'll hardly even
notice! :-)
Thanks for your patience!
Matt Dralle
List Administrator
--
Matt G. Dralle | Matronics | P.O. Box 347 | Livermore | CA | 94551
925-606-1001 Voice | 925-606-6281 FAX | dralle@matronics.com Email
http://www.matronics.com/ W.W.W. | Featuring Products For Aircraft
Message 19
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| Subject: | Shortening Exhaust Pipes |
--> RV-List message posted by: "Larry Bowen" <Larry@BowenAero.com>
Mine are low enough that I can eeek the pins past the exhaust by going over
the top of them. Is that an option on the 8A?
-
Larry Bowen, RV-8
Larry@BowenAero.com
http://BowenAero.com
> -----Original Message-----
> From: DAVID REEL [mailto:dreel@cox.net]
> Sent: Friday, January 07, 2005 3:50 PM
> To: rvlist
> Subject: RV-List: Shortening Exhaust Pipes
>
> --> RV-List message posted by: "DAVID REEL" <dreel@cox.net>
>
> I'm thinking of shortening my Vetterman cross-over exhaust
> pipes so they terminate in the vertical plane of the
> firewall. This would allow me to insert the bottom cowl's
> bottom hinge pins without the interference I currently
> experience on my RV8A. Is there any down side to this
> approach? Are there other solutions?
>
> I have positioned my pipes to have 1/2" clearance from the
> fuselage cooling air exit ramp and engine mount tubes. They
> are about 3/8" too low to permit a straight shot at the hinge
> pin. There is a 3" space between the inboard end of the
> hinge and the pipe but the pins are too stiff to bend much
> over that short distance. I presume that reducing the
> pipe-to-exit-ramp gap, to 1/4" say, is not an option as the
> pipe would hit the ramp during engine lurches & the exhaust
> would drum against the fuselage. I read in Kent Paser's book
> that he shortened the pipe to improve scavenging of the
> outlet air & it appears that the firewall plane would be my
> RV8A's air-flow equivalent of about where his were placed.
> So I'm wondering if anyone has had or heard of any other
> peoples experience with this type of a solution?
>
> Dave Reel - RV8A
>
>
> =========
> Matronics Forums.
> =========
> =========
>
>
>
>
>
>
Message 20
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| Subject: | Re: Shortening Exhaust Pipes |
--> RV-List message posted by: "Phil Sisson, Litchfield Aerobatic Club" <sisson@consolidated.net>
Stein Bruch wrote:
>--> RV-List message posted by: "Stein Bruch" <stein@steinair.com>
>
>I feel your pain having burnt my various fingers/hands more than once.
>
>There is one REALLY Good solution...Use camlocks or skybolts fasteners. No
>more burnt/scraped hands, no more cussing, and only about 15 seconds of
>work.
>
>Did it on mine and I'll never go back to hinges there or on the top of the
>cowl either.
>
>Just my 2 cents!
>
>Cheers,
>Stein.
>
>
Just wondering if anyone has used screws down the sides and forward. I
put screws over the top and across the bottom. They are working out
great. I left hinges in the lower sides and forward sides and they are a
pain.... I get them in but they are tight. and hard to work with. I hate
'em.....
Phil in Illinois
Do not archive
Message 21
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| Subject: | Shortening Exhaust Pipes |
--> RV-List message posted by: "Kosta Lewis" <mikel@dimensional.com>
MMMM, mmmmm, mmmmm. Wear a gas mask. Yikes.
Well, I cut mine at an angle, matching the angle of the belly. I thought
it looked more streamlined (read: cool) and would decrease drag and the
force of the exhaust gas out of the stacks would push the exhaust away
from the airplane belly.
Right.
I have since welded a set of extensions back on to get the exhaust
further out in the slipstream. The belly of the airplane was WHITE with
exhaust stains with them cut short. Now it is an almost invisible grey
and only on the right side. Which has the longest stacks, by the way. No
noticeable change in noise level, on the ground or in the air. They
sound cool regardless.
Several things to consider: engine exhaust is corrosive. If you want to
see the effects, find one of the older Cessna 310s with the exhaust
exiting at the end of the engine nacelle. Big corrosion problems. There
is a reason they stopped doing it that way and no one else tried it.
If the exhaust is on the bottom of your airplane, how much of it is
getting INSIDE the airplane. Carbon monoxide is not much fun. Gas mask,
eh?
Clean it with Simple Green: look in the archives as to the general
opinion of the stuff, including what the Air Force thinks of it.
I would NOT cut the ends. Vetterman makes one of the best designs on the
market and has it cut the way he does for good reasons. As far as drag,
the cooling air coming out of the engine compartment is pretty draggy
anyway and the cut exhaust stacks is not going to increase your speed
enough, if at all, for you to notice. I gained or lost no airspeed with
the changes.
IMHO, of course. Experimental means you can do what you think is right.
Remember you have to completely remove the exhaust system to get the
extensions welded back on. After you get a new set from Larry. You might
call him and ask how many extensions he has sent out to correct them
being cut too short.
Michael
RV-4 N232 Suzie Q
Message 22
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| Subject: | Re: Re-using oil hose fittings |
--> RV-List message posted by: Scott Vanartsdalen <svanarts@yahoo.com>
Well I made my own hoses so I have the mandrels I just wasn't sure the ends could
be reused. Thanks a lot guys!
"Phil Sisson, Litchfield Aerobatic Club" <sisson@consolidated.net> wrote:--> RV-List
message posted by: "Phil Sisson, Litchfield Aerobatic Club"
Scott Vanartsdalen wrote:
>--> RV-List message posted by: Scott Vanartsdalen
>
>I have a question about oil hoses. I need to make a longer hose because I'm going
to move my oil cooler to the front baffle. Can I take the fittings off the
old hose and put them on a new hose? Thanks.
>
>
>--
>Scott VanArtsdalen
>RV-4 N311SV, FLYING!!
>
>
They most likely can be re-used unless they were specially made by
Swaging them on...
Phil in Illinois
do not archive
--
Scott VanArtsdalen
RV-4 N311SV, FLYING!!
When a man does all he can
though it succeeds not well,
blame not him that did it."
-- George Washington
Message 23
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| Subject: | Re: Re-using oil hose fittings |
--> RV-List message posted by: Hopperdhh@aol.com
Scott,
I am going to go against the rest of the listers, and bet that you can't
reuse them. I have tried. The problem you will run into is that you can't get
the rubber out of the gap where the sharp edge is inside the fitting. I
tried all kinds of ways to do it. Ended up getting some new fittings from Van's.
Maybe I would have gotten by with the used ones, but I feel better not
using them after the damage I inflicted on them. The kind of fitting that Van
supplies really doesn't need a mandrel if you are careful. Ask for Van's
instruction sheet when you order the fittings.
I pressure tested the hoses after assembly to 1000 psi using a hydraulic
jack with a pipe thread drilled and tapped into the base. That's a whole other
story! One lister suggested using a grease gun for the pressure source.
Fill the hose with oil so you don't build a bomb!
Let us know how it goes.
Dan Hopper
Walton, IN
RV-7A
N766DH (Flying since July if the weather is good enough!)
In a message dated 1/7/05 4:22:19 PM US Eastern Standard Time,
svanarts@yahoo.com writes:
I have a question about oil hoses. I need to make a longer hose because
I'm going to move my oil cooler to the front baffle. Can I take the fittings
off the old hose and put them on a new hose? Thanks.
--
Scott VanArtsdalen
RV-4 N311SV, FLYING!!
Message 24
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| Subject: | Re: Shortening Exhaust Pipes |
--> RV-List message posted by: "J. Rion Bourgeois" <rion@att.net>
When I first flew my RV-4, I turned the turndowns on my Vetterman 4 by 4
horizontal and towards the center of the fuselage bottom so that they
wouldn't stick out into the slipstream and so I wouldn't have to trim my
cowl. Way too loud and lots of drumming on the floor. I then turned them
45 degrees down and still angled towards the center. Still too loud. Now I
have them pointing straight back and down. May be a little slower, but
much more pleasing on the ears. No appreciable difference as far as odors
go. Rion
----- Original Message -----
From: "Kosta Lewis" <mikel@dimensional.com>
Subject: RE: RV-List: Shortening Exhaust Pipes
> --> RV-List message posted by: "Kosta Lewis" <mikel@dimensional.com>
>
> MMMM, mmmmm, mmmmm. Wear a gas mask. Yikes.
>
> Well, I cut mine at an angle, matching the angle of the belly. I thought
> it looked more streamlined (read: cool) and would decrease drag and the
> force of the exhaust gas out of the stacks would push the exhaust away
> from the airplane belly.
>
> Right.
>
> I have since welded a set of extensions back on to get the exhaust
> further out in the slipstream. The belly of the airplane was WHITE with
> exhaust stains with them cut short. Now it is an almost invisible grey
> and only on the right side. Which has the longest stacks, by the way. No
> noticeable change in noise level, on the ground or in the air. They
> sound cool regardless.
>
> Several things to consider: engine exhaust is corrosive. If you want to
> see the effects, find one of the older Cessna 310s with the exhaust
> exiting at the end of the engine nacelle. Big corrosion problems. There
> is a reason they stopped doing it that way and no one else tried it.
>
> If the exhaust is on the bottom of your airplane, how much of it is
> getting INSIDE the airplane. Carbon monoxide is not much fun. Gas mask,
> eh?
>
> Clean it with Simple Green: look in the archives as to the general
> opinion of the stuff, including what the Air Force thinks of it.
>
> I would NOT cut the ends. Vetterman makes one of the best designs on the
> market and has it cut the way he does for good reasons. As far as drag,
> the cooling air coming out of the engine compartment is pretty draggy
> anyway and the cut exhaust stacks is not going to increase your speed
> enough, if at all, for you to notice. I gained or lost no airspeed with
> the changes.
>
> IMHO, of course. Experimental means you can do what you think is right.
> Remember you have to completely remove the exhaust system to get the
> extensions welded back on. After you get a new set from Larry. You might
> call him and ask how many extensions he has sent out to correct them
> being cut too short.
>
> Michael
> RV-4 N232 Suzie Q
>
>
>
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