Aluminum Prop Dings

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone can
give me some guidance in regards to the little aluminums dings that occurred
on the back side of the tip on the prop. These are tiny dings the prop has
picked up over the years from sucking up debris while taxing. They vary
from tiny pin pricks to small scratches, maybe .015" at the deepest and
maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander (grinder)
because to get them all out, I'd be taking off some serious aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene

This is a very serious question and one that deserves a professional answer.
Visit a propeller shop and look at their scrap pile. There's plenty of
evidence of what a pit or scratch can do. Talk it over with the shop
manager.

Warning, this will be a VERY sobering visit.

bildan

"canflyboy" wrote in message
...
Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone can
give me some guidance in regards to the little aluminums dings that
occurred
on the back side of the tip on the prop. These are tiny dings the prop
has
picked up over the years from sucking up debris while taxing. They vary
from tiny pin pricks to small scratches, maybe .015" at the deepest and
maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander (grinder)
because to get them all out, I'd be taking off some serious aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene

The curved side of the blade is called the "back" or "cambered side". The
flat side is called the "face" or "thrust side". The back usually doesn't
get many nicks in it. AC43-13-1B change 1 has all the information you
could desire about blending out nicks in your propeller, including
limitations. You shouldn't repaint the blade without closely inspecting
and repairing the nicks, You might paint over a developing crack.



"canflyboy" wrote in
:

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone
can give me some guidance in regards to the little aluminums dings
that occurred on the back side of the tip on the prop. These are tiny
dings the prop has picked up over the years from sucking up debris
while taxing. They vary from tiny pin pricks to small scratches,
maybe .015" at the deepest and maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander
(grinder) because to get them all out, I'd be taking off some serious
aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene





--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

Here's another perspective on blimps.

Interesting factoids from chief engineer: Fins are in 2 parts so they
fit easily into a standard container. They usually operate the blimp as
well as manufacture it. American Blimp in Hillsboro, OR has manufactured
80% of all blimps flying. American Blimp is manufacturing and operating
new blimps for Goodyear. All blimps currently flying have bullet holes
in them, and there is a standard, FAA approved bullet hole repair.
Pressure inside the envelope is a few inches of water, maintained by
either a duct collecting propwash or by electric fans at low power. It
costs $40,000US for the helium for each inflation, and it's not practical
to try and recycle the gas. The next project is to put those goddamned
annoying television billoards on their blimps. The blimps are called
"lightships" because the envelope is translucent, and they shine a couple
1000 watt light bulbs in it, so it glows in the dark. This means that
the evelope is also vulnerable to UV from the sun, which means that it
has to be replaced every few years.


"canflyboy" wrote in
:

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone
can give me some guidance in regards to the little aluminums dings
that occurred on the back side of the tip on the prop. These are tiny
dings the prop has picked up over the years from sucking up debris
while taxing. They vary from tiny pin pricks to small scratches,
maybe .015" at the deepest and maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander
(grinder) because to get them all out, I'd be taking off some serious
aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene





--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

Here's another perspective on blimps.

Interesting factoids from chief engineer: Fins are in 2 parts so they
fit easily into a standard container. They usually operate the blimp as
well as manufacture it. American Blimp in Hillsboro, OR has manufactured
80% of all blimps flying. American Blimp is manufacturing and operating
new blimps for Goodyear. All blimps currently flying have bullet holes
in them, and there is a standard, FAA approved bullet hole repair.
Pressure inside the envelope is a few inches of water, maintained by
either a duct collecting propwash or by electric fans at low power. It
costs $40,000US for the helium for each inflation, and it's not practical
to try and recycle the gas. The next project is to put those goddamned
annoying television billoards on their blimps. The blimps are called
"lightships" because the envelope is translucent, and they shine a couple
1000 watt light bulbs in it, so it glows in the dark. This means that
the evelope is also vulnerable to UV from the sun, which means that it
has to be replaced every few years.


"canflyboy" wrote in
:

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone
can give me some guidance in regards to the little aluminums dings
that occurred on the back side of the tip on the prop. These are tiny
dings the prop has picked up over the years from sucking up debris
while taxing. They vary from tiny pin pricks to small scratches,
maybe .015" at the deepest and maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander
(grinder) because to get them all out, I'd be taking off some serious
aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene





--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

Here's another perspective on blimps.

Interesting factoids from chief engineer: Fins are in 2 parts so they
fit easily into a standard container. They usually operate the blimp as
well as manufacture it. American Blimp in Hillsboro, OR has manufactured
80% of all blimps flying. American Blimp is manufacturing and operating
new blimps for Goodyear. All blimps currently flying have bullet holes
in them, and there is a standard, FAA approved bullet hole repair.
Pressure inside the envelope is a few inches of water, maintained by
either a duct collecting propwash or by electric fans at low power. It
costs $40,000US for the helium for each inflation, and it's not practical
to try and recycle the gas. The next project is to put those goddamned
annoying television billoards on their blimps. The blimps are called
"lightships" because the envelope is translucent, and they shine a couple
1000 watt light bulbs in it, so it glows in the dark. This means that
the evelope is also vulnerable to UV from the sun, which means that it
has to be replaced every few years.


"canflyboy" wrote in
:

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone
can give me some guidance in regards to the little aluminums dings
that occurred on the back side of the tip on the prop. These are tiny
dings the prop has picked up over the years from sucking up debris
while taxing. They vary from tiny pin pricks to small scratches,
maybe .015" at the deepest and maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander
(grinder) because to get them all out, I'd be taking off some serious
aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene





--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

Here's another perspective on blimps.

Interesting factoids from chief engineer: Fins are in 2 parts so they
fit easily into a standard container. They usually operate the blimp as
well as manufacture it. American Blimp in Hillsboro, OR has manufactured
80% of all blimps flying. American Blimp is manufacturing and operating
new blimps for Goodyear. All blimps currently flying have bullet holes
in them, and there is a standard, FAA approved bullet hole repair.
Pressure inside the envelope is a few inches of water, maintained by
either a duct collecting propwash or by electric fans at low power. It
costs $40,000US for the helium for each inflation, and it's not practical
to try and recycle the gas. The next project is to put those goddamned
annoying television billoards on their blimps. The blimps are called
"lightships" because the envelope is translucent, and they shine a couple
1000 watt light bulbs in it, so it glows in the dark. This means that
the evelope is also vulnerable to UV from the sun, which means that it
has to be replaced every few years.


"canflyboy" wrote in
:

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone
can give me some guidance in regards to the little aluminums dings
that occurred on the back side of the tip on the prop. These are tiny
dings the prop has picked up over the years from sucking up debris
while taxing. They vary from tiny pin pricks to small scratches,
maybe .015" at the deepest and maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander
(grinder) because to get them all out, I'd be taking off some serious
aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene





--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

Here's another perspective on blimps.

Interesting factoids from chief engineer: Fins are in 2 parts so they
fit easily into a standard container. They usually operate the blimp as
well as manufacture it. American Blimp in Hillsboro, OR has manufactured
80% of all blimps flying. American Blimp is manufacturing and operating
new blimps for Goodyear. All blimps currently flying have bullet holes
in them, and there is a standard, FAA approved bullet hole repair.
Pressure inside the envelope is a few inches of water, maintained by
either a duct collecting propwash or by electric fans at low power. It
costs $40,000US for the helium for each inflation, and it's not practical
to try and recycle the gas. The next project is to put those goddamned
annoying television billoards on their blimps. The blimps are called
"lightships" because the envelope is translucent, and they shine a couple
1000 watt light bulbs in it, so it glows in the dark. This means that
the evelope is also vulnerable to UV from the sun, which means that it
has to be replaced every few years.


"canflyboy" wrote in
:

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone
can give me some guidance in regards to the little aluminums dings
that occurred on the back side of the tip on the prop. These are tiny
dings the prop has picked up over the years from sucking up debris
while taxing. They vary from tiny pin pricks to small scratches,
maybe .015" at the deepest and maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander
(grinder) because to get them all out, I'd be taking off some serious
aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene





--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

Here's another perspective on blimps.

Interesting factoids from chief engineer: Fins are in 2 parts so they
fit easily into a standard container. They usually operate the blimp as
well as manufacture it. American Blimp in Hillsboro, OR has manufactured
80% of all blimps flying. American Blimp is manufacturing and operating
new blimps for Goodyear. All blimps currently flying have bullet holes
in them, and there is a standard, FAA approved bullet hole repair.
Pressure inside the envelope is a few inches of water, maintained by
either a duct collecting propwash or by electric fans at low power. It
costs $40,000US for the helium for each inflation, and it's not practical
to try and recycle the gas. The next project is to put those goddamned
annoying television billoards on their blimps. The blimps are called
"lightships" because the envelope is translucent, and they shine a couple
1000 watt light bulbs in it, so it glows in the dark. This means that
the evelope is also vulnerable to UV from the sun, which means that it
has to be replaced every few years.


"canflyboy" wrote in
:

Hi All

I'm repainting my McCauley Aluminium prop and was wondering if anyone
can give me some guidance in regards to the little aluminums dings
that occurred on the back side of the tip on the prop. These are tiny
dings the prop has picked up over the years from sucking up debris
while taxing. They vary from tiny pin pricks to small scratches,
maybe .015" at the deepest and maybe about .05" inches long.

I'm not sure if I should try and dress these out with a sander
(grinder) because to get them all out, I'd be taking off some serious
aluminium.

Any tips on sanding would be appreciated.

Thanks

Eugene





--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

Another usenet newbie who doesn't know better than to post images to a
non-binaries group....