Polishing your prop?

[Jay Honeck]

Is polishing your prop legal?

Now that we've got ours almost done, of course one of our airport wags
mentioned that it might not be acceptable -- despite the fact that every
10th plane you see has one.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

[Dave Butler]

Jay Honeck wrote:
> Is polishing your prop legal?
>
> Now that we've got ours almost done, of course one of our airport wags
> mentioned that it might not be acceptable -- despite the fact that every
> 10th plane you see has one.

http://www.aopa.org/whatsnew/newsitems/2003/03-3-140x.html

Remove SHIRT to reply directly.

Dave

[G.R. Patterson III]

Jay Honeck wrote:
>
> Is polishing your prop legal?

Probably not. See http://www.aopa.org/whatsnew/newsitems/2003/03-3-140x.html

George Patterson
The British drink warm beer because they all own Lucas refrigerators.

[Steven P. McNicoll]

"Jay Honeck" > wrote in message
news:1wDcb.578743$o%2.261452@sccrnsc02...
>
> Is polishing your prop legal?
>

I never thought about the legality. I've been using lemon Pledge furniture
polish on mine for years.

[Ron Natalie]

"Jay Honeck" > wrote in message news:1wDcb.578743$o%2.261452@sccrnsc02...
> Is polishing your prop legal?
>
> Now that we've got ours almost done, of course one of our airport wags
> mentioned that it might not be acceptable -- despite the fact that every
> 10th plane you see has one.

Someone recently circulated a document (not official) claiming that removing the
paint removes the "corrosion resistance that was part of certification." I'm
not sure I buy that. Certainly people have stripped other parts of their aircraft
and not run afoul of such complaints. I'm sure Hartzell will tell you not to do
it, but I'm not sure that there is anything concrete that prohibits it (that is, you
are once again at the mercy of your local FSDO if they ever notice it).

[Ron Natalie]

"Steven P. McNicoll" > wrote in message nk.net...
>
> "Jay Honeck" > wrote in message
> news:1wDcb.578743$o%2.261452@sccrnsc02...
> >
> > Is polishing your prop legal?
> >
>
> I never thought about the legality. I've been using lemon Pledge furniture
> polish on mine for years.
>
I think he means stripping the paint and polishing the bare aluminum.

[Steven P. McNicoll]

"Ron Natalie" > wrote in message
m...
>
> I think he means stripping the paint and polishing the bare aluminum.
>

Mine has no aluminum.

[Ron Natalie]

"Steven P. McNicoll" > wrote in message nk.net...
>
> "Ron Natalie" > wrote in message
> m...
> >
> > I think he means stripping the paint and polishing the bare aluminum.
> >
>
> Mine has no aluminum.
>
I wouldn't recommend striping the varnish off of it then.

[Steven P. McNicoll]

"Ron Natalie" > wrote in message
m...
>
> I wouldn't recommend striping the varnish off of it then.
>

Sound advice.

[G.R. Patterson III]

Ron Natalie wrote:
>
> that is, you
> are once again at the mercy of your local FSDO if they ever notice it.

And all of us know how merciful Jay's FSDO is.

George Patterson
The British drink warm beer because they all own Lucas refrigerators.

[Kevin McCue]

Just had this go round at Ryan. The argument is that the hypothetical
prop was manufactured, alodined and painted. Some FSDO's consider the prop
to no longer comply with the TC when stripped and polished.
My friend (an A&P) contacted Sensenich about his polished prop. He
asked them if polishing it affected its airworthiness. They said no. He
asked them to put that in writing. They declined. His prop went to the prop
shop and returned painted.

--
Kevin McCue
KRYN
'47 Luscombe 8E
Rans S-17 (for sale)




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[Jay Honeck]

> > Is polishing your prop legal?
>
> Probably not. See
http://www.aopa.org/whatsnew/newsitems/2003/03-3-140x.html

Dang. And we just finished it today.

It took two days of stripping, Scotch Guarding, wet sanding with 220, then
400, then 600, and a whole bunch of Simichrome and Mother's polish -- but it
looks fabulous!

Guess I'll have to ground myself now... ;)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

[Ron Natalie]

"Jay Honeck" > wrote in message news:jbLcb.581953$o%2.262844@sccrnsc02...

> It took two days of stripping, Scotch Guarding,

ScotchGuarding? Well it won't stain now. Maybe you meant Scotch-Brite?

[Stu Gotts]

On Thu, 25 Sep 2003 23:50:39 GMT, "Jay Honeck"
> wrote:

>> > Is polishing your prop legal?
>>
>> Probably not. See
>http://www.aopa.org/whatsnew/newsitems/2003/03-3-140x.html
>
>Dang. And we just finished it today.
>
>It took two days of stripping, Scotch Guarding, wet sanding with 220, then
>400, then 600, and a whole bunch of Simichrome and Mother's polish -- but it
>looks fabulous!
>
>Guess I'll have to ground myself now... ;)

I could have sworn it came from the factory that way!

[Jay Honeck]

> ScotchGuarding? Well it won't stain now. Maybe you meant Scotch-Brite?

Ha! Yeah, I had it pressed and steam-cleaned, too... Sheesh.

My hands are so sore from sanding, Scotch Guarding would probably do them
good. How the hell do people strip planes for a living? And how do people
keep bare aluminum planes shiny?

Speaking of which, why is THAT legal, if a polished prop isn't? Weren't
those planes "painted at the factory", and now they don't have sufficient
"anti-corrosion protection"?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

[Dave Stadt]

"Ron Natalie" > wrote in message
m...
>
> "Jay Honeck" > wrote in message
news:jbLcb.581953$o%2.262844@sccrnsc02...
>
> > It took two days of stripping, Scotch Guarding,
>
> ScotchGuarding? Well it won't stain now. Maybe you meant Scotch-Brite?

No wonder it took him so long. Maybe all that rubbing caused him to become
disoriented and all the Cardinals to look like upside down Cherokees

[Steven P. McNicoll]

"Jay Honeck" > wrote in message
news:9mOcb.579817$YN5.419612@sccrnsc01...
>
> My hands are so sore from sanding, Scotch Guarding would probably do them
> good. How the hell do people strip planes for a living? And how do
people
> keep bare aluminum planes shiny?
>
> Speaking of which, why is THAT legal, if a polished prop isn't? Weren't
> those planes "painted at the factory", and now they don't have sufficient
> "anti-corrosion protection"?
>

Actually, I believe most of the shiny, polished, bare aluminum planes I've
seen were not painted at the factory.

[Larry Smith]

"Stu Gotts" > wrote in message
...
> On Thu, 25 Sep 2003 23:50:39 GMT, "Jay Honeck"
> > wrote:
>
> >> > Is polishing your prop legal?
> >>
> >> Probably not. See
> >http://www.aopa.org/whatsnew/newsitems/2003/03-3-140x.html
> >
> >Dang. And we just finished it today.
> >
> >It took two days of stripping, Scotch Guarding, wet sanding with 220,
then
> >400, then 600, and a whole bunch of Simichrome and Mother's polish -- but
it
> >looks fabulous!
> >
> >Guess I'll have to ground myself now... ;)
>
> I could have sworn it came from the factory that way!
>

Welp, 2025 alloy and 7075 alloy, two of the alloys of aluminum props,
develop intergranular corrosion and die if the passivating layer of chromic
acid conversion and paint are not left on the prop. But I guess if it is
polished every day . . .

[Newps]

Paint is an option.

Jay Honeck wrote:
>>ScotchGuarding? Well it won't stain now. Maybe you meant Scotch-Brite?
>
>
> Ha! Yeah, I had it pressed and steam-cleaned, too... Sheesh.
>
> My hands are so sore from sanding, Scotch Guarding would probably do them
> good. How the hell do people strip planes for a living? And how do people
> keep bare aluminum planes shiny?
>
> Speaking of which, why is THAT legal, if a polished prop isn't? Weren't
> those planes "painted at the factory", and now they don't have sufficient
> "anti-corrosion protection"?

[Jeremy Lew]

It's legal, but mama said it would make me go blind.

"Jay Honeck" > wrote in message
news:1wDcb.578743$o%2.261452@sccrnsc02...
> Is polishing your prop legal?
>
> Now that we've got ours almost done, of course one of our airport wags
> mentioned that it might not be acceptable -- despite the fact that every
> 10th plane you see has one.
> --
> Jay Honeck
> Iowa City, IA
> Pathfinder N56993
> www.AlexisParkInn.com
> "Your Aviation Destination"
>
>

[Jay Honeck]

> Welp, 2025 alloy and 7075 alloy, two of the alloys of aluminum props,
> develop intergranular corrosion and die if the passivating layer of
chromic
> acid conversion and paint are not left on the prop. But I guess if it is
> polished every day . . .

"Welp"? How'd THAT get past your chell-specker? :)

Anyway, of COURSE the very first flight we took with the polished prop was
to Door County -- where the plane literally spent 60 hours sitting outside
in the rain. (We don't even use water to WASH the plane, for gosh-sakes,
and then we immerse the bare aluminum in a shower for two days...)

Well, I'm happy to say that the Simichrome polish we used on the prop
apparently leaves some kind of a protective coating on the metal, because no
corrosion was evident when we returned. We gave it a light polishing when
we parked Atlas in the hangar, and the prop still looks GREAT.

(We actually had two line-guys on this trip comment on how good it looked!
:)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

[John Godwin]

"Jay Honeck" > wrote in
news:t3Mdb.626827$o%2.289964@sccrnsc02:

> Well, I'm happy to say that the Simichrome polish we used on the prop
> apparently leaves some kind of a protective coating on the metal,
> because no corrosion was evident when we returned. We gave it a light
> polishing when we parked Atlas in the hangar, and the prop still looks
> GREAT.

Is Simichrome Polish the famous Prop Wash that I've heard so much about?

>:)



--
John Godwin
Silicon Rallye Inc.

(remove SPAMNOT from email address)