Aluminum Prop Dings

guynoir wrote:
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.

I get more dings in the back (the side facing the pilot) than I ever get
in the front.

While well intentioned, there are many ISP's that have issues with the
bandwidth used by posting large files, such as photos, on usenet. There
is a specific usenet newsgroup that is appropriate for posting pics. You
can post ABOUT em here, and say go check it out there.... or you can
post a link to a website that hosts the picture files.. Actually putting
them here is discouraged, from what I understand.

alt.binaries.pictures.aviation is the place that most of us use.

NOT the USENET police... and nice pics, by the way..
Dave

The side facing the pilot is the face. The side away from the pilot is the
back, unless you fly a pusher.

Ron Natalie wrote in
m:

guynoir wrote:
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.

I get more dings in the back (the side facing the pilot) than I ever
get in the front.




--
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.

Filing or dressing out prop nicks is a job for a licensed
mechanic, since there are legal specs that must be adhered to, and the
prop manufacturer has more dimensional limits that need to be checked.
They learned these things the hard way; don't you go doing the same.
The right sort of nick, in the right place, given enough time in
operation, will result in a crack that could see a chunk of prop
disappear, and the imbalance could tear the engine off the airplane.
The airplane will not glide with its engine missing, so nicks need to
be taken seriously.
I've seen some badly repaired nicks that actually make the
prop more likely to fail.
Dan

Do NOT try to dress out the prop yourself. Even a small nick can cause a
prop to fail in flight. If this happens at full power, the engine can be
ripped off the airplane in less than a second! Without the engine, the
airplane becomes extremely tail heavy and a violent crash is unavoidable.

Certain types of nicks on certain models or propellor are fixable. A
licensed mechanic with a powerplant rating knows how to properly dress a
prop if it's possible, and rebalance and repaint the prop. Don't try to
paint the prop yourself. Even a small amount of paint on one side can
seriously unbalance a prop. Some propellors are balanced by simply
applying varnish to one side...that's all it takes! Get a prop shop or a
powerplant mechanic to work on it.

wrote:
Filing or dressing out prop nicks is a job for a licensed
mechanic, since there are legal specs that must be adhered to, and the
prop manufacturer has more dimensional limits that need to be checked.
They learned these things the hard way; don't you go doing the same.
The right sort of nick, in the right place, given enough time in
operation, will result in a crack that could see a chunk of prop
disappear, and the imbalance could tear the engine off the airplane.
The airplane will not glide with its engine missing, so nicks need to
be taken seriously.
I've seen some badly repaired nicks that actually make the
prop more likely to fail.
Dan

On Wed, 25 May 2005 14:00:21 -0500, guynoir
wrote:

The side facing the pilot is the face. The side away from the pilot is the
back, unless you fly a pusher.

That terminology is as intuitively backwards as some of the computer
stuff I work with.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

Ron Natalie wrote in
om:

guynoir wrote:
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.

I get more dings in the back (the side facing the pilot) than I ever
get in the front.

In article ,
Roger wrote:
On Wed, 25 May 2005 14:00:21 -0500, guynoir
wrote:

The side facing the pilot is the face. The side away from the pilot is the
back, unless you fly a pusher.

That terminology is as intuitively backwards as some of the computer
stuff I work with.

Just think of it as 'little endian' vs. 'big endian'. *GRIN*

It makes sense, if you think of it in terms of which 'side' of the prop is
doing the work. It's the one to the rear that actually pushes the air around.

On Tue, 07 Jun 2005 12:44:23 -0000,
(Robert Bonomi) wrote:

In article ,
Roger wrote:
On Wed, 25 May 2005 14:00:21 -0500, guynoir
wrote:

The side facing the pilot is the face. The side away from the pilot is the
back, unless you fly a pusher.

That terminology is as intuitively backwards as some of the computer
stuff I work with.

Just think of it as 'little endian' vs. 'big endian'. *GRIN*

It makes sense, if you think of it in terms of which 'side' of the prop is
doing the work. It's the one to the rear that actually pushes the air around.

But...but... but... I was taught a prop "pulls" the air rather than
pushing it.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

In article ,
Roger wrote:
On Tue, 07 Jun 2005 12:44:23 -0000,
(Robert Bonomi) wrote:

In article ,
Roger wrote:
On Wed, 25 May 2005 14:00:21 -0500, guynoir
wrote:

The side facing the pilot is the face. The side away from the pilot is the
back, unless you fly a pusher.

That terminology is as intuitively backwards as some of the computer
stuff I work with.

Just think of it as 'little endian' vs. 'big endian'. *GRIN*

It makes sense, if you think of it in terms of which 'side' of the prop is
doing the work. It's the one to the rear that actually pushes the air around.

But...but... but... I was taught a prop "pulls" the air rather than
pushing it.

Not my fault if you were lied to. *BIG* grin


In the standard configuration, the prop "pulls" the airplaine through the
air, yes.

Absent a "sky hook" to anchor to, it has to push against 'something else' to
accomplish that pulling.



Lastly, there are two things one must know, to be an "injuneer" --
First: "F equals M A"
Second: "You can't push on a rope."

Air is _not_ a rope. you *can* push it. snicker