[f-AA] Props

[Vand...@aol.com]

Please allow me one more post on this subject.  I have seen an otherwise very well maintained Piper Cherokee with the engine attached by only one motor mount after the prop tip was lost on departure.  The pilot had the presence of mind to chop the power and the skill and good fortune to make an emergency landing back on the field.  The vibration stresses on the aircraft were dramatic.  I urge all of us to give the prop the utmost tender and loving of care.  For whatever reason(s) too many pilots regard the prop as a lethal object to be feared only by the careless on the ground.  Believe me it can bite your whole airplane if it fails in flight.

As I have mentioned before, I couldn't find a pedigree for the props in the logs of the 3 aircraft I've purchased in the last decade.  Do you know your propeller's history?  Would you bet your life on it?

Fly safe,

Dan vdMeer

[Tom Holmes]

Dan,

I have made it a policy to have the prop of my latest pride and joy overhauled before commiting my tender behind to it.  It's about $300 for a prop that has no issues.  Money well spent IMHO.

Tom

---

From: "Vand...@aol.com" <Vand...@aol.com>
To: aer...@westmont.edu
Sent: Tue, July 6, 2010 9:50:52 PM
Subject: [f-AA] Props

[Tom Pederson]

We've been talking about metal props. Not trying to perpetuate this thread forever, but what are the most common failures in wood props? Never did have one. 

Regards,
Tom

_______________________________________________
Aeron

 

ca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[Tom Holmes]

I had a wood prop delaminate in a Cub once.  Parked it on the side of Mt Diablo in a cow pasture.  Hung a new prop on it and flew it out.  17 and indestructable!!

Tom

---

From: Tom Pederson <tpede...@gmail.com>
To: aer...@westmont.edu
Sent: Wed, July 7, 2010 12:21:34 AM
Subject: Re: [f-AA] Props

[j...@joea.com]

I have several that are about to be taken over to a prop shop for repair and overhaul.

Wooden props can be repaired or in many cases overhauled. They can even remove the
leading edges, add sections and so on, something that you cannot even think about
doing with a metal prop.

Joe A

On 7 Jul 2010 at 8:18, Tom Holmes wrote:

>
> I had a wood prop delaminate in a Cub once. Parked it on the side of Mt Diablo
> in a cow pasture. Hung a new prop on it and flew it out. 17 and indestructable!!
> Tom
>
>

> From: Tom Pederson <tpede...@gmail.com>
> To: aer...@westmont.edu
> Sent: Wed, July 7, 2010 12:21:34 AM
> Subject: Re: [f-AA] Props
>
> We've been talking about metal props. Not trying to perpetuate this thread forever, but
> what are the most common failures in wood props? Never did have one.
>
> Regards,
> Tom

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[CaptG...@aol.com]

 

While we have been on props--all props should have their own log book. If any one need the specs for installing/maintaining  wood props I have them from Sensenich and would be glad to post.

 

Doug

[j...@joea.com]

If you do not have one, Sensenich will send you a prop log for free.

Joe A

[11...@comcast.net]

Here's an interesting twist on the polished prop saga.  There is an 11AC on Barnstormers that advertises that it has a "new Sensenich polished prop".  Picture shows that it is indeed a polished prop.  I asked the seller if he indeed bought the prop polished new.  Here's his answer.  "I purchased it new from Sensenich, polished by Sensenich."   What's the story here?  

[j...@joea.com]

Roger,

I brought this up earlier yet was shot down. This is the second case I have heard of lately
of Sensenich polishing a prop and selling it that way.

Joe A

[11...@comcast.net]

Joe.  It almost seems as though the prop manufacture just makes it up as required, depending on the question.   If it was painted, then paint is a must to protect the prop, polished is bad.  If they send it out polished, then keep it clean and polished to protect the prop, polished is good.  I certainly understand the Agency's requirement to enforce as the manufacture says they must.   I additionally however, after about 50 years of looking at props old, new, pretty, ugly, and in all states of condition, I seriously doubt during all that time that  paint or no paint  had anything to do with the props overall condition.  I would venture to say the polished props had better inspections and care than all the old beat up ugly painted scratched chipped ones I've seen.    Just opinions.  But Sensenich selling new polished ones makes me question some previous truths.  roger

[Rich Dugger]

I would call Sensenich and ask them.

Rich

[11...@comcast.net]

I might do that tomorrow.  Good idea.  

----- Original Message -----
From: "Rich Dugger" <66l...@verizon.net>
To: aer...@westmont.edu
Sent: Wednesday, July 7, 2010 9:41:26 PM GMT -06:00 US/Canada Central
Subject: Re: [f-AA] Props...still

I would call Sensenich and ask them.

Rich

From: 11...@comcast.net

Sent: Wednesday, July 07, 2010 7:56 PM

To: aer...@westmont.edu

Subject: Re: [f-AA] Props...still

Here's an interesting twist on the polished prop saga.  There is an 11AC on Barnstormers that advertises that it has a "new Sensenich polished prop".  Picture shows that it is indeed a polished prop.  I asked the seller if he indeed bought the prop polished new.  Here's his answer.  "I purchased it new from Sensenich, polished by Sensenich."   What's the story here?  

 

 

 

 

_______________________________________________
Aeronca mailing list
Aer...@westmont.edu
http://mail.westmont.edu/mailman/listinfo/aeronca

[j...@joea.com]

All its going to take is for one person to come forwards with a receipt from when they
purchased the prop from the factory polished, and its going to be a frenzy after that.

Joe

On 8 Jul 2010 at 2:16, 11...@comcast.net wrote:

>
> Joe. It almost seems as though the prop manufacture just makes it up as
> required, depending on the question. If it was painted, then paint is a must to
> protect the prop, polished is bad. If they send it out polished, then keep it clean
> and polished to protect the prop, polished is good. I certainly understand the

> Agency's requirementto enforce as the manufacture says they must.I

> additionally however, after about 50 years of looking at props old, new, pretty,
> ugly, and in all states of condition, I seriously doubt during all that timethat
> paint or no paint had anything to do with the props overall condition. I would
> venture to say the polished props had better inspections and care than all the
> old beat up ugly painted scratched chipped ones I've seen. Just opinions. But
> Sensenich selling new polished ones makes me question some previous truths.
> roger
> ----- Original Message -----
> From: j...@joea.com
> To: aer...@westmont.edu
> Sent: Wednesday, July 7, 2010 8:24:29 PM GMT -06:00 US/Canada Central
> Subject: Re: [f-AA] Props...still
>
> Roger,
>
> I brought this up earlier yet was shot down. This is the second case I have heard
> of lately
> of Sensenich polishing a prop and selling it that way.
>
> Joe A
>
> On 8 Jul 2010 at 0:56, 11...@comcast.net wrote:
>
> >
> > Here's an interesting twist on the polished prop saga. There is an 11AC on
> > Barnstormers that advertises that it has a "new Sensenich polished prop".
> > Picture shows that it is indeed a polished prop. I asked the seller if he
> indeed
> > bought the prop polished new. Here's his answer. "I purchased it new from
> > Sensenich, polished by Sensenich." What's the story here?

> > &nb

[11...@comcast.net]

Joe.  As Rich suggested, I'll contact Sensenich tomorrow and see what the real story is.  roger

[ryan...@gci.net]

Joe,

Gimme a call on my cell....907-597-6137

Gregg

[ryan...@gci.net]

correction...907-957-6137.....fatt fingers :^)

[j...@joea.com]

Tried to call three times and it will not go through.

Try 602 418 5642. Or home is 480 699 2339.
Sent via BlackBerry by AT&T

-----Original Message-----
From: ryan...@gci.net
Sender: aeronca...@westmont.edu
Date: Wed, 07 Jul 2010 19:10:22
To: <aer...@westmont.edu>
Reply-To: aer...@westmont.edu
Subject: Re: [f-AA] Props...still

[CaptG...@aol.com]

Evidently the man with the Chief is exaggerating here is the official word from Sensenich--I emailed them and this is the answer  about a polished prop from Sensenich--

 

Doug:

No we do not sell high polished units. In fact, I think there is service bulletin out from the FAA that bans them from use due to glare? At any rate, our type certificate calls out that the propeller must be painted one of the two approved colors...that being Hartzell grey, or flat black, and it must have white stripes at the tips for safety.

Denise : )

[11...@comcast.net]

Same answer I got today.   Not a very informed answer from Sensenich though.  It implies that polished is prohibited because of "glare" and it's the FAA's fault...and it mandates only two colors be used on props.  Now we have an issue of custom colors on props....airworthy or not.  Oh well...it was a fun discussion.   roger   

----- Original Message -----
From: CaptG...@aol.com
To: aer...@westmont.edu
Sent: Thursday, July 8, 2010 9:12:10 AM GMT -06:00 US/Canada Central
Subject: Re: [f-AA] Props

[Sam Burke]

Attached are the McCauley propeller painting Instructions for their props, it lists six approved colors. Note that the tips must be painted a contrasting color for safety.

[Brooks Ladd]

Anxious back in January I bought a 7ECA project mostly ready to go, however
the engine was an O-320-A3A. The previous owner (AP/AI) was going to submit
for a one time STC, but was selling all his posessions to move south.

I can buy a one time STC for an O-320-A2B, but then I still need an A2B
engine and not the A3A. The pitch on my prop does not match the one in the
STC either.

I've seen a few 7ECA's with O-290-D2's in them via 337. This I think would
be the best solution cost wise, but I'd like to know I could do it before
investing in the engine.

Lastly I can put an O-235-C1 back in, but would need to change the exhaust,
prop, move the battery back to the front.

Any thoughts? Mostly I'm wondering if I can put the O-290-D2 in easily or
whether it may be too difficult to get approval. I have about 8k left in my
budget before I start having to beg for money. Ideally the 7ECA would be
sold shortly after to allow money to be spent on my Champ project, but I
could end up flying it for awhile to build time.

-Brooks

[11...@comcast.net]

Thanks Sam.  It's been all an interesting education on props.