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condition of kit parts.

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rebel

condition of kit parts.

Post by rebel » Sat Feb 18, 2012 9:20 am

I received my Rebel tail kit the other day. My set of right hand aileron nose
ribs arrived without any plastic covering, and they are all covered in a
greyish-white powder. Is this OK? Should I request new ones, or clean them
before assembly? What is the best way to clean the oxidation? My rudder skin
was also sent without plastic. It is not oxidized, but it has fairly bad
scratches all over the outer surface. I will request a replacement for that.
Also, some of the fittings like the rudder horn and the aileron end plates
look like they have been drug behind a car. The surfaces are completely
marred and scratched. This is in contrast to the other fittings which are
perfectly machined and shiny-smooth. Is all this acceptable/normal?
Thanks.
Jesse Jenks





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David Ricker

condition of kit parts.

Post by David Ricker » Sat Feb 18, 2012 9:20 am

Hi Jesse

Welcome to the Rebel experience!

The rudder horns etc. that have the kind of roughed up look probably feel smooth
and have no sharp edges? If this is the case then they have been run through a
vibratory de-burring machine. The parts are put in a bin with a bunch of
"stones" with a specific composition and have been vibrated. The idea is the
stones wear off all of the sharp edges left by machining. This is a normal
secondary operation and leaves an irregular mat finish on the surface.

Is the powder on the parts attached or can it be wiped/washed off? If it is not
attached it is likely a talc powder used during the press forming process. If it
is attached then you are correct that it is probably corrosion product and you
need to talk to MAM.

Hope this is helpful,

Cheers,

Dave R.

elite583.cjb.net



rebel@dcsol.com wrote:
I received my Rebel tail kit the other day. My set of right hand aileron nose
ribs arrived without any plastic covering, and they are all covered in a
greyish-white powder. Is this OK? Should I request new ones, or clean them
before assembly? What is the best way to clean the oxidation? My rudder skin
was also sent without plastic. It is not oxidized, but it has fairly bad
scratches all over the outer surface. I will request a replacement for that.
Also, some of the fittings like the rudder horn and the aileron end plates
look like they have been drug behind a car. The surfaces are completely
marred and scratched. This is in contrast to the other fittings which are
perfectly machined and shiny-smooth. Is all this acceptable/normal?
Thanks.
Jesse Jenks



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https://www.dcsol.com/default.htm
username "rebel" password "builder"
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List administrator: mike.davis@dcsol.com
-----------------------------------------------------
--
David A. Ricker
Fall River, Nova Scotia
Canada






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Jesse Jenks

condition of kit parts.

Post by Jesse Jenks » Sat Feb 18, 2012 9:20 am

Dave,
Thanks. You are correct about the fittings, so I guess this is normal,
although I would have rather just de-burred them with a file. Does the
"abused" finish require paint for corrosion protection any more than an
un-marred surface would? I am planning on a bare metal finish.
As for the ribs, the powder seems to come off rather easily for the most
part. There are some areas that don't wipe clean with a finger pass though.
Also they are pretty scratched up in general, and they seem to be aged. For
comparison, the other set is plastic wrapped like all the other parts, and
has none of these problems. Seems like they found an old batch on the back
of the shelf and decided to get rid of it.
What do you think, should I just forget about it, or ask for new ones?
Thanks again
Jesse


From: David Ricker <ricker@inherentsys.ca>
Reply-To: <rebel-builders@dcsol.com>
To: rebel-builders@dcsol.com
Subject: Re: condition of kit parts.
Date: Sun, 01 Aug 2004 22:13:38 -0300

Hi Jesse

Welcome to the Rebel experience!

The rudder horns etc. that have the kind of roughed up look probably feel
smooth
and have no sharp edges? If this is the case then they have been run
through a
vibratory de-burring machine. The parts are put in a bin with a bunch of
"stones" with a specific composition and have been vibrated. The idea is
the
stones wear off all of the sharp edges left by machining. This is a normal
secondary operation and leaves an irregular mat finish on the surface.

Is the powder on the parts attached or can it be wiped/washed off? If it
is not
attached it is likely a talc powder used during the press forming process.
If it
is attached then you are correct that it is probably corrosion product and
you
need to talk to MAM.

Hope this is helpful,

Cheers,

Dave R.

elite583.cjb.net


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Reed Britt Civ OO-ALC/MAD

condition of kit parts.

Post by Reed Britt Civ OO-ALC/MAD » Sat Feb 18, 2012 9:20 am

Jesse - My original flap skins were misformed and MAM sent me new ones - the
new ones resembled what you are talking about - one with no plastic and lots
tooling marks and the other with half the plastic gone to inspect the large
(unacceptable) scratch in the skin -

This is not including the shipping damage to the trailing edge - about an
inch ripped and deformed. I neglected to uncrate and inspect since the
crate looked ok and I didn't need the parts yet - My bad and I wont do it
again.

I called and forget who I talked to but they were receptive and I have to
get around to sending the photos to justify.

Bottom line - I don't think it is acceptable or normal -

Britt - 194SR - Salt Lake City

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
rebel@dcsol.com
Sent: Sunday, August 01, 2004 4:15 PM
To: rebel-builders@dcsol.com
Subject: condition of kit parts.

I received my Rebel tail kit the other day. My set of right hand aileron
nose
ribs arrived without any plastic covering, and they are all covered in a
greyish-white powder. Is this OK? Should I request new ones, or clean them
before assembly? What is the best way to clean the oxidation? My rudder skin

was also sent without plastic. It is not oxidized, but it has fairly bad
scratches all over the outer surface. I will request a replacement for that.
Also, some of the fittings like the rudder horn and the aileron end plates
look like they have been drug behind a car. The surfaces are completely
marred and scratched. This is in contrast to the other fittings which are
perfectly machined and shiny-smooth. Is all this acceptable/normal?
Thanks.
Jesse Jenks





-----------------------------------------------------
List archives located at:
https://www.dcsol.com/default.htm
username "rebel" password "builder"
Subscription services located at:
https://www.dcsol.com/public/code/html-subscribe.htm
List administrator: mike.davis@dcsol.com
-----------------------------------------------------





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David Ricker

condition of kit parts.

Post by David Ricker » Sat Feb 18, 2012 9:20 am

Jesse

The vibratory deburred surface will be just as susceptible to corrosion a
s any
exposed aluminum surface. As for the ribs, if they apear to be corroded
it is
worth talking to MAM.

Dave

Jesse Jenks wrote:
Dave,
Thanks. You are correct about the fittings, so I guess this is normal,
although I would have rather just de-burred them with a file. Does the
"abused" finish require paint for corrosion protection any more than an
un-marred surface would? I am planning on a bare metal finish.
As for the ribs, the powder seems to come off rather easily for the mos
t
part. There are some areas that don't wipe clean with a finger pass tho
ugh.
Also they are pretty scratched up in general, and they seem to be aged.
For
comparison, the other set is plastic wrapped like all the other parts,
and
has none of these problems. Seems like they found an old batch on the b
ack
of the shelf and decided to get rid of it.
What do you think, should I just forget about it, or ask for new ones?
Thanks again
Jesse
From: David Ricker <ricker@inherentsys.ca>
Reply-To: <rebel-builders@dcsol.com>
To: rebel-builders@dcsol.com
Subject: Re: condition of kit parts.
Date: Sun, 01 Aug 2004 22:13:38 -0300

Hi Jesse

Welcome to the Rebel experience!

The rudder horns etc. that have the kind of roughed up look probably f
eel
smooth
and have no sharp edges? If this is the case then they have been run
through a
vibratory de-burring machine. The parts are put in a bin with a bunch
of
"stones" with a specific composition and have been vibrated. The idea
is
the
stones wear off all of the sharp edges left by machining. This is a n
ormal
secondary operation and leaves an irregular mat finish on the surface.

Is the powder on the parts attached or can it be wiped/washed off? If
it
is not
attached it is likely a talc powder used during the press forming proc
ess.
If it
is attached then you are correct that it is probably corrosion product
and
you
need to talk to MAM.

Hope this is helpful,

Cheers,

Dave R.

elite583.cjb.net


_________________________________________________________________
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Jesse Jenks

condition of kit parts.

Post by Jesse Jenks » Sat Feb 18, 2012 9:20 am

Thanks guys,
I will talk to the Mam obout it then.
Jesse

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