Today's Message Index:
----------------------
1. 05:36 AM - Horizpntal Pitot Hunt (James H Nelson)
2. 06:23 AM - Re: Wing skin crack (Hopperdhh@aol.com)
3. 07:18 AM - Reiff Engine preheater (Tom & Cathy Ervin)
4. 08:25 AM - Re: Wing skin crack (John Jessen)
5. 09:06 AM - Re: Pitot Hunt (N395V)
6. 11:37 AM - Re: Young Eagles Fuel (JOHN STARN)
7. 12:11 PM - Re: Reiff Engine preheater (Ernie & Margo)
8. 03:13 PM - Re: Reiff Engine preheater (Mike Kraus)
9. 05:45 PM - Re: EGT Span (Kelly Patterson)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Horizpntal Pitot Hunt |
--> RV-List message posted by: James H Nelson <rv9jim@juno.com>
Chuck,
I had on on my Cessna 195. Try that!
Jim Nelson
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Wing skin crack |
John,
Like you, I have looked closely at the holes after dimpling, and see a
roughness -- even though the holes were deburred before dimpling. For sure, a
smaller hole would be more likely to have stress cracks after dimpling than a
bigger hole, so no. 40 is the right drill to use, not 41 as some have done, or
no drill at all.
Maybe the best thing to do is to deburr the hole AFTER dimpling. But many
airplanes have been built without doing this and none (that I know of) have
fallen out of the sky due to skin cracks. Aluminum does fatigue and eventually
all of the RV's will start cracking! Maybe in 50,000 hours?
Dan Hopper
RV-7A
In a message dated 9/21/2006 11:45:52 A.M. Eastern Daylight Time,
jjessen@rcn.com writes:
I've matched drilled and deburred and dimpled and I still don't see a
smoothness around the hole. I often see little nibbles or some such thing. Not
cracks, but it does make me wonder if I'm doing things correctly. Should be
smooth, should it not?
John Jessen
#40328
____________________________________
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Jim Peoples
Sent: Thursday, September 21, 2006 7:20 AM
Subject: RE: RV-List: Wing skin crack
Search the archives on 'match drill' and you will find there have been
several lengthy discussions about this (March '04 and April '02, etc.)... in my
mind there is a connection, in the mind of others there may not be.
I will use my judgement, you will use yours... Perhaps this is why i am
committed to building my own RV rather than buying one from somebody else.
jp
com/Navigator?RV-List
(http://www.matronics.com/Navigator?RV-List)
(http://www.matronics.com/contribution)
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Reiff Engine preheater |
List-Group, I have been trying to contact the Reiff people via Email and
phone with no success? Are they still in business?? I need to install a
preheater at my annual next month.
Tom in Ohio (RV6-A)
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Just makes one a little quizzical after all the preparation, but something
has to happen with the deformation.
John Jessen
do not archive
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Hopperdhh@aol.com
Sent: Friday, September 22, 2006 6:22 AM
Subject: Re: RV-List: Wing skin crack
John,
Like you, I have looked closely at the holes after dimpling, and see a
roughness -- even though the holes were deburred before dimpling. For sure,
a smaller hole would be more likely to have stress cracks after dimpling
than a bigger hole, so no. 40 is the right drill to use, not 41 as some have
done, or no drill at all.
Maybe the best thing to do is to deburr the hole AFTER dimpling. But many
airplanes have been built without doing this and none (that I know of) have
fallen out of the sky due to skin cracks. Aluminum does fatigue and
eventually all of the RV's will start cracking! Maybe in 50,000 hours?
Dan Hopper
RV-7A
In a message dated 9/21/2006 11:45:52 A.M. Eastern Daylight Time,
jjessen@rcn.com writes:
I've matched drilled and deburred and dimpled and I still don't see a
smoothness around the hole. I often see little nibbles or some such thing.
Not cracks, but it does make me wonder if I'm doing things correctly.
Should be smooth, should it not?
John Jessen
#40328
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Jim Peoples
Sent: Thursday, September 21, 2006 7:20 AM
Subject: RE: RV-List: Wing skin crack
Search the archives on 'match drill' and you will find there have been
several lengthy discussions about this (March '04 and April '02, etc.)... in
my mind there is a connection, in the mind of others there may not be.
I will use my judgement, you will use yours... Perhaps this is why i am
committed to building my own RV rather than buying one from somebody else.
jp
com/Navigator?RV-List
="http://www.matronics.com/Navigator?RV-List">http://www.matronics.com/Navig
ator?RV-List
.matronics.com/">http://forums.matronics.com
ronics.com/">http://wiki.matronics.com
://www.matronics.com/contribution">http://www.matronics.com/contribution
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> RV-List message posted by: "N395V" <n395v@hughes.net>
You might try a 28V twin cessna pitot and see if 12v at 6 amps will give enough
heat.
--------
Milt
N395V
F1 Rocket
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=63239#63239
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Young Eagles Fuel |
I'll talk to my pilots about the gas... We have an open house at APV on
the first Saturday, Oct. 7th and something of a race. Time vs distance
vs fuel burn estimates. If your free, drop by and enjoy a burger on us.
No "official" meeting on the 7th. JACK
----- Original Message -----
From: randy banks
To: AAYoungEagles Jack Starn
Cc: AATowerBoss Tom Gummo
Sent: Friday, September 22, 2006 5:53 AM
Subject: Young Eagles Fuel
Dear Jack,
We need to take care of the fuel for your Young Eagles pilots that
flew at our Airshow.
Unless you have a better idea, please give me the gallons of fuel
needed for each pilot, and their names and addresses so that we may mail
them a check.
We would like to visit at your next EAA/Pilots Association meeting if
you might set that up.
Stay well Jack, and thank you very much for all of your efforts!
r
Randy Banks
home (760) 948 9594
cell (909) 964 3021
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Reiff Engine preheater |
Tom: Within the last month I have ordered the Reiff engine preheater
from Van's catalogue (Page 16). It is fully installed and works
perfectly. I set it up so that I can plug it in through my oil door.
Perhaps you can deal with Vans or contact me off-line. Reiff may not
sell direct. Don't know but I certainly had no reason to. I am very
happy.
----- Original Message -----
From: Tom & Cathy Ervin
List-Group, I have been trying to contact the Reiff people via Email
and phone with no success? Are they still in business?? I need to
install a preheater at my annual next month.
Tom in Ohio (RV6-A)
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Reiff Engine preheater |
Reiff is still in business, I just purchased a heater from them for my
RV-10. Purchased it directly. Try calling them, many small companies
are not good at e-mail for some reason....
262-968-2342
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Ernie & Margo
Sent: Friday, September 22, 2006 3:10 PM
Subject: Re: RV-List: Reiff Engine preheater
Tom: Within the last month I have ordered the Reiff engine preheater
from Van's catalogue (Page 16). It is fully installed and works
perfectly. I set it up so that I can plug it in through my oil door.
Perhaps you can deal with Vans or contact me off-line. Reiff may not
sell direct. Don't know but I certainly had no reason to. I am very
happy.
----- Original Message -----
From: Tom <mailto:tcervin@valkyrie.net> & Cathy Ervin
List-Group, I have been trying to contact the Reiff people via Email and
phone with no success? Are they still in business?? I need to install a
preheater at my annual next month.
Tom in Ohio (RV6-A)
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> RV-List message posted by: "Kelly Patterson" <kbob@cox.net>
My only experience with this issue was the result of carb ice. I was
cruising at 17K, WOT and checking on my engine EGT's. The carb O-320 is not
making much HP at this elevation, and DA of approx. 19-20K. The EGT's began
to spread and this really puzzled me. Messing with the mixture did nothing.
Remembering something I read on this list got me to pull the carb heat and
see what happens. After a few seconds the EGT's were even again and I
removed the carb heat. Didn't happen again, so I chocked it up to
experience.
Kelly Patterson
RV-6A N716K Chandler, AZ
O-320 carb 9.2:1 CR & Emag
108 hrs of good times
Time: 04:04:46 PM PST US
From: "Ed Holyoke" <bicyclop@pacbell.net>
Subject: RE: RV-List: EGT Span
--> RV-List message posted by: "Ed Holyoke" <bicyclop@pacbell.net>
Steve,
Carbureted Lycomings have lousy fuel/air distribution and the EGTs are gonna
be all over the place. I've found that pulling off about a tenth of an inch
of manifold pressure helps even out the fuel distribution and brings the
EGTs closer together on our O-320. The slightly deflected throttle causes
turbulence and better mixing. You can experiment with a touch of carb heat
too which has a similar effect. If you use carb heat, you may need to
re-lean a little to account for the extra richness.
All that said, the EGT spread doesn't mean too much. Absolute EGT values
aren't very important and could be off because of probe errors anyway. What
you really want to watch for is changes in temperatures from the normal way
it runs that might tell you something has happened. A rise in EGT in one
cylinder might mean a fouled plug or a bad valve. A rise in all of them
could be a bad mag. If your 170 degree spread is normal for your engine, you
could always set the alarm for 180 and quit worrying or just keep punching
the acknowledge button when the alarm goes off.
Pax,
Ed Holyoke
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Steve Glasgow
Sent: Thursday, September 21, 2006 2:32 PM
Subject: RV-List: EGT Span
--> RV-List message posted by: "Steve Glasgow" <willfly@carolina.rr.com>
I have my EIS system set to 150 Max EGT Span. Sometimes at high power
settings the warning light comes on indicating a span of greater than 150
F. When I look at the actual EGTs the span is between #1 and #4 cylinders
and is sometimes as great as 170. A reduction in power extinguishes
the
warning light. Shortly there after, all EGTs are closer together and
run
somewhere between 50 25 of each other. At cruise and leaned out
sometimes they are within 15 of each other.
Is it normal for a 0-360 carburated engine to have more than 150 Span at
high power settings?
I have tightened the rubber intake connectors and changed plugs.
Is it possible to have a sticking valve? Should I do a compression check?
If this is normal, what is the highest span recommended?
Thanks for any input you may have.
Steve Glasgow-Cappy
N123SG RV-8
Cappy's Toy
360 Hours
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|