Today's Message Index:
----------------------
1. 05:11 AM - Re: Homebuilders list (John Mireley)
2. 06:51 AM - Re: Homebuilders list (Doon47@aol.com)
3. 07:01 AM - Re: Homebuilders list (Pwalsh4539@aol.com)
4. 07:49 AM - Re: Homebuilders list (Doon47@aol.com)
5. 11:32 AM - Matco Brake apply forces (charles.long@gm.com)
6. 12:35 PM - Re: Matco Brake apply forces (Rick)
7. 01:59 PM - [ Gig Giacona ] : New Email List Photo Share Available! (Email List Photo Shares)
8. 02:01 PM - Surge supressor (Shay King)
9. 02:16 PM - 3 watt bulb and holder (Shay King)
10. 02:40 PM - Re: Homebuilders list (Matthew Mucker)
11. 04:25 PM - Galvanic Corrosion Information (Brandon Tucker)
12. 04:57 PM - Re: Surge supressor (ZSMITH3rd@aol.com)
13. 06:22 PM - Re: Surge supressor (Matthew Mucker)
14. 09:36 PM - Re: Galvanic Corrosion Information (CLOJAN@aol.com)
15. 10:09 PM - Re: Galvanic Corrosion Information (Gary Gower)
Message 1
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| Subject: | Re: Homebuilders list |
--> Zenith-List message posted by: John Mireley <mireley@pilot.msu.edu>
Matthew Mucker wrote:
>--> Zenith-List message posted by: "Matthew Mucker" <matthew@mucker.net>
>
>
>I was able to find lat/lon data for United States postal codes (ZIP codes)
>and airports. I haven't found such data for other countries. If anyone can
>forward to me a source for such data, I'll gladly update the homebuilders
>directory with that information.
>
>-Matt
>
>
>
Matt;
Could you share where you found this data on the zip codes?
Message 2
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| Subject: | Re: Homebuilders list |
--> Zenith-List message posted by: Doon47@aol.com
I've tried a couple of times to find Mathew Mucker's cite at
www.mathewmucker.com, but am told the site cannot be found. Perhaps this is
why enrollment has dropped off. Chip Muldoon doon47@aol.c0m
do not archive
Message 3
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| Subject: | Re: Homebuilders list |
--> Zenith-List message posted by: Pwalsh4539@aol.com
It is MaTThewmucker.com.....2 Ts.
Do not archive
Message 4
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| Subject: | Re: Homebuilders list |
--> Zenith-List message posted by: Doon47@aol.com
Thanks for correcting me on maTThewmucker.com - it works Chip Muldoon
doon47@aol.com
do not archive
Message 5
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| Subject: | Matco Brake apply forces |
01/08/2003 02:31:11 PM
--> Zenith-List message posted by: charles.long@gm.com
I talked to George at Matco brakes. He gave me some useful
information I thought I should pass along to everyone:
The 601 kit uses a MC5 master cylinder with a 5/8" diameter
piston. The rework previously discussed on the list to improve brake
forces results in a 1/2" piston. The new piston increases mechanical
advantage by 50%. George commented that the biggest problem we have is
with the mechanical advantage in the pedals. Matco recommends a 2.5 : 1
minimum mechanical advantage, 4.0 :1 being ideal. To determine the
mechanical advantage on your plane, simply measure the distance from the
toe brake pivot point to toe brake apply tube centerline and divide by the
distance from the toe brake pivot point to the master cylinder pivot point.
George commented that the large diameter of the built in reservoir on the
MC5 system does not allow for a short moment arm length. He suggested
replacing the MC5 with the smaller diameter MC4 (no reservoir) and adding a
remote reservoir. This provides the added advantage of a better location
for checking fluid level. The cost of the trade in would be roughly $80.
The Matco Internet sight provides an application drawing that is helpful:
www.MatcoMfg.com I'm going to look over my parts to see what can be done
with the existing hardware. If I'm near the 2.5 : 1, the reworked MC5
will take me up close to 4.0 :1 If I'm less than 2.0:1, I'm going to spend
a few bucks and go to the remote resevoir MC4.
Regards,
Chuck Long,
Controls Design Engr.
Message 6
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| Subject: | Re: Matco Brake apply forces |
--> Zenith-List message posted by: Rick <rick.pitcher@verizon.net>
charles.long@gm.com wrote:
>
> --> Zenith-List message posted by: charles.long@gm.com
>
> I talked to George at Matco brakes. He gave me some useful
> information I thought I should pass along to everyone:
>
> The 601 kit uses a MC5 master cylinder with a 5/8" diameter
> piston. The rework previously discussed on the list to improve brake
> forces results in a 1/2" piston. The new piston increases mechanical
> advantage by 50%. George commented that the biggest problem we have is
> with the mechanical advantage in the pedals. Matco recommends a 2.5 : 1
> minimum mechanical advantage, 4.0 :1 being ideal. To determine the
> mechanical advantage on your plane, simply measure the distance from the
> toe brake pivot point to toe brake apply tube centerline and divide by the
> distance from the toe brake pivot point to the master cylinder pivot point.
> George commented that the large diameter of the built in reservoir on the
> MC5 system does not allow for a short moment arm length. He suggested
> replacing the MC5 with the smaller diameter MC4 (no reservoir) and adding a
> remote reservoir. This provides the added advantage of a better location
> for checking fluid level. The cost of the trade in would be roughly $80.
> The Matco Internet sight provides an application drawing that is helpful:
> www.MatcoMfg.com I'm going to look over my parts to see what can be done
> with the existing hardware. If I'm near the 2.5 : 1, the reworked MC5
> will take me up close to 4.0 :1 If I'm less than 2.0:1, I'm going to spend
> a few bucks and go to the remote resevoir MC4.
>
> Regards,
> Chuck Long,
> Controls Design Engr.
>
Deja vu !!!
I was just reading an almost identical post on the Avid list.
http://groups.yahoo.com/group/avid_flyer/message/713
Someone posted a nice diagram showing the geometry for the MC-5's.
http://groups.yahoo.com/group/avid_flyer/files/Brake%20Efficiency.jpg
I just got my shipment from Aircraft Spruce yesterday. 50 feet of
assorted 4130 steel tubing, a couple dozen pieces of AN hardware, some
cable and thimbles, and 4 of the MC-4 master cylinders with the spiffy
Matco remote reservoir.
Now I gotta figure out how to turn all that into controls and landing
gear...
Rick Pitcher
Message 7
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| Subject: | [ Gig Giacona ] : New Email List Photo Share Available! |
--> Zenith-List message posted by: Email List Photo Shares <pictures@matronics.com>
A new Email List Photo Share is available:
Poster: Gig Giacona <wr.giacona@cox-internet.com>
Subject: Bent corner of skin on 601XL Elevator
http://www.matronics.com/photoshare/wr.giacona@cox-internet.com.01.08.2003/index.html
--------------------------------------------
o EMAIL LIST PHOTO SHARE
Share your files and photos with other List members simply by
emailing the files to:
pictures@matronics.com
Please view the typical Share above and include the Description Text
Fields as shown along with your submission of files and photos.
o Main Photo Share Index:
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Message 8
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--> Zenith-List message posted by: "Shay King" <shaking@eircom.net>
Dear List,
Can anyone tell me if it is necessary to fit the surge suppression diode [that
comes with the ACS ignition switch] to the starter solenoid on the rotax 912s?
The diode assembly that came with mine isn't long enough to fit the starter solenoid
that came with the kit.
Thanks,
Shay King. CH701/Rotax 912s
Message 9
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| Subject: | 3 watt bulb and holder |
--> Zenith-List message posted by: "Shay King" <shaking@eircom.net>
Dear List,
Does anyone have a handy source for the 3 watt bulb and holder for the charging
lamp, as per the Rotax 912 wiring diagram?
Thanks.
Do not archive.
Shay King. CH701/ Rotax912S
Message 10
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| Subject: | Homebuilders list |
--> Zenith-List message posted by: "Matthew Mucker" <matthew@mucker.net>
> Matt;
>
> Could you share where you found this data on the zip codes?
>
I linked my data sources on the homebuilders directory page.
www.matthewmucker.com
do not archive.
Message 11
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| Subject: | Galvanic Corrosion Information |
--> Zenith-List message posted by: Brandon Tucker <btucke73@yahoo.com>
Zenith Warriors,
I posted this message on the Sonex list in response to a question about stainless
steel rivets on an aluminum airplane. Not really applicable here, but
I thought everyone might be interested in this information.
[Tucker, Brandon LT (VFA-27)]
I have read many postings about these concerns and decided to copy word for
word from the NAVAIR 01-1A-509 Naval corrosion control manual. I suppose the
Navy would be an authority when it comes to corrosion control in salty conditions.
Interesting read anyway.
Dissimilar metal coupling (Galvanic Corrosion)
When two dissimilar metals make electrical contact in the presence of an electrolyte,
the rate at which corrosion occurs depends on the difference in their activities,
that is, their positions in Table 2-1. The greater the difference
in activity, the faster corrosion occurs. For example, magnesium would corrode
very quickly when coupled with gold in a humid atmosphere. But aluminum would
corrode very slowly, if at all, in contact with cadmium.
Galvanic corrosion occurs when different metals are in contact with each other
and an electrolyte, such as salt water. It is usually recognizable by the presence
of a buildup of corrosion at the joint between the metals. For example,
aluminum skin panels and stainless steel doublers, riveted together in an aircraft
wing, form a galvanic couple if moisture and contamination are present.
Figure 2-6 shows galvanic corrosion of magnesium adjacent to steel fasteners.
When metals which are known to be in electrical contact are well separated from
each other in Table 2-1 galvanic corrosion is probably occurring.
Anode and cathode surface area. The rate of galvanic corrosion also depends on
the size of the parts in contact. If the surface area of the corroding metal
(the anode) is smaller than the surface area of the less active metal (the cathode),
corrosion will be rapid and severe. But, when the corroding metal is
larger than the less active metal corrosion will be slow and superficial. For
example, an aluminum fastener in contact with a relatively inert monel structure
may corrode severely, while a monel bracket secured to a large aluminum member
would result in a relatively superficial attack on the aluminum sheet.
TABLE 2-1
ANODIC (HIGH CORROSION POTENTIAL)
Lithium
Magnesium alloys
zink (plate)
beryllium
cadmium (plate)
Uranium (depleted)
Aluminum alloys
indium
tin (plate
stainless steel 430 (active)
lead
1010 steel
cast iron
stainless steel 410 (active)
copper (plate)
nickel (plate)
am 350 (active)
chromium (plate)
stainless steels 350, 310, 301, 304 (active)
stainless steels 430 410 (passive)
stainless steel 13-8, 17-7ph (active)
brass, yellow, naval
stainless steel 316l (active)
bronze 220
+
-
stainless steel 347 (active)
copper-nickel 715
stainless steel 202 (active)
monel 400 stainless steel 201 (active)
monel 400
stainless steel 201 (active)
stainless steels 321 316 (active)
stainless steels 309 13-8 17-7 ph (passive)
stainless steels 304, 301 321 (passive)
stainless steels 201 31 6l (passive)
stainless steel 286 (passive)
am355(active)
stainless steel 202 (passive)
carpenter 20 (passive)
am355 (passive)
titanium alloys
am350 (passive)
silver
palladium
gold
rhodium
platinum carbon / graphite
CATHODIC (LOW CORROSION POTENTIAL)
As you can see, monel looks to be pretty similarly charged to most stainless steels
according to the charts, and has minimal galvanic corrosion potential due
to the size of the cathode (rivet). I am not a metallurgical engineer, but due
to the small size of the cathodes (rivets) and the relatively large size of
the anode (skins) I would suppose that galvanic corrosion potential is relatively
small. I would throw some zinc chromated chicken bones at a stainless steel
firewall (large cathode) if installed, just to please the corrosion gods!
If anyone has any corrosion related questions, I can pull out the manual and
attempt to answer them. I am definitely not an air frame tech or an A & P,
but I can type from the manual!
On another note, has anyone used any chemical conversion coatings such as alodine?
The Navy swears by it as a pre- paint treatment and it is incredibly
easy to apply. You just apply with cheese cloth, and when the metal turns a light
gold color (in only a few seconds), simply rinse with water. Our corrosion
techs clean, alodine, and spray with a self priming poly paint. Done!
Brandon
---------------------------------
Message 12
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| Subject: | Re: Surge supressor |
--> Zenith-List message posted by: ZSMITH3rd@aol.com
Add wire to make the diode conveniently long enough to accomodate crimp lugs,
etc.
And yes USE the diode - it helps to quell extraneous zap forces before they
do a number on some unsuspecting integrated circuit in another part of the
aircraft ( like in a radio).
Zed Smith/701/R912
do not archive
Message 13
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--> Zenith-List message posted by: "Matthew Mucker" <matthew@mucker.net>
And those zap forces can be very very large as the magnetic field in the
coil collapses.
Use the diode.
> --> Zenith-List message posted by: ZSMITH3rd@aol.com
>
> Add wire to make the diode conveniently long enough to accomodate
> crimp lugs,
> etc.
> And yes USE the diode - it helps to quell extraneous zap forces
> before they
> do a number on some unsuspecting integrated circuit in another
> part of the
> aircraft ( like in a radio).
>
Unlike Zed, I vote for archiving this information! :)
Message 14
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| Subject: | Re: Galvanic Corrosion Information |
--> Zenith-List message posted by: CLOJAN@aol.com
In a message dated 1/8/2003 4:26:58 PM Pacific Standard Time,
btucke73@yahoo.com writes:
> On another note, has anyone used any chemical conversion coatings such as
> alodine?
Brandon: The 46 Ercoupe I just sold ( to get the XL kit) was a polished- no
paint affair. Parked next to it on the ramp was it's sister which was also
polished. The bottom of my wings were alodined many years ago and the
sister's wings weren't. I never touched the bottom except to wash it and it
stayed pretty much corrosion free. Last year we had to take the sisters'
wings off and paint the bottoms because they were badly pitted. Alodine is
not pretty and I don't know how it works under paint, but it sure worked in
this instance.
Jack Russell -Clovis Ca
Ps. A huge crate arrived yesterday filled with a zillion shinny parts. Let
the fun begin!
Message 15
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| Subject: | Re: Galvanic Corrosion Information |
--> Zenith-List message posted by: Gary Gower <ggower_99@yahoo.com>
Congratulations Jack, I share your emotion, was just like a few days
ago for us (about six months :-) and we still have a happy face.
Is great to make the inventory, we made the shelfs using the ply from
the crate. Dreaming in the first flight! in a few months more...
Saludos
Gary Gower
Guadalajara, Jalisco, Mexico
701 912S
Do Not Archive.
--- CLOJAN@aol.com wrote:
> --> Zenith-List message posted by: CLOJAN@aol.com
>
> In a message dated 1/8/2003 4:26:58 PM Pacific Standard Time,
> btucke73@yahoo.com writes:
>
>
> > On another note, has anyone used any chemical conversion coatings
> such as
> > alodine?
>
> Brandon: The 46 Ercoupe I just sold ( to get the XL kit) was a
> polished- no
> paint affair. Parked next to it on the ramp was it's sister which was
> also
> polished. The bottom of my wings were alodined many years ago and the
>
> sister's wings weren't. I never touched the bottom except to wash it
> and it
> stayed pretty much corrosion free. Last year we had to take the
> sisters'
> wings off and paint the bottoms because they were badly pitted.
> Alodine is
> not pretty and I don't know how it works under paint, but it sure
> worked in
> this instance.
> Jack Russell -Clovis Ca
> Ps. A huge crate arrived yesterday filled with a zillion shinny
> parts. Let
> the fun begin!
>
>
>
>
>
>
>
>
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