Matronics Email Lists :: View topic - CS prop slinging grease

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

CS prop slinging grease

Matronics Email Lists Forum Index -> RV-List

View previous topic :: View next topic

Author Message

czechsix(at)juno.com
Guest

Posted: Mon Mar 20, 2006 9:16 pm Post subject: CS prop slinging grease

Guys,



I have 15.8 hours now on my RV and my new Hartzell is still slinging out

some grease....just enough to see a few fine streaks down the blade and

get drops of grease on my windshield, cowl, and wings.  I believe

Hartzell says that if you let the prop sit in the box for over 18 months

the seals will dry out and need to be replaced because they'll leak.  Of

course when I ordered my prop I knew I'd be flying in a year so this

wouldn't be a problem for me.  Yeah right.  It sat in the box for two

years before I first ran the engine...  



I have a hard time believing I'm the only one like this so I'm wondering,

has anybody else experienced this problem?  If so, did it ever go away? 

I'm not concerned about it from a safety perspective--I can lube the hub

occasionally and make sure it doesn't dry out in there--but it's a real

pain to clean up especially in the canopy.  If anybody's replaced these

seals, can you remember how much it set you back and where you had the

work done?



Thanks,



--Mark Navratil

Cedar Rapids, Iowa

RV-8A N2D flying 15.8 hours....love the flying, hate the cleanup

afterwards....

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

Bruce(at)glasair.org
Guest

Posted: Mon Mar 20, 2006 9:57 pm Post subject: CS prop slinging grease

The shelf life is 2 years. A prop shop should charge around $500 for a

reseal job.



Bruce

www.glasair.org

 



--

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

tcervin(at)valkyrie.net
Guest

Posted: Tue Mar 21, 2006 2:08 am Post subject: CS prop slinging grease

Mike, My Hartzel sat in a box for 3 years and works fine. No leaks or 

issues.

                                                                        Tom 

in Ohio (RV6-A...362CT)

---

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

RGray67968(at)aol.com
Guest

Posted: Tue Mar 21, 2006 4:15 am Post subject: CS prop slinging grease

Mark, I had this 'problem' as well with my Hartzell. My didn't have  anything 

to do with 'shelf life'. All I did was remove the spinner and retorque  all 

the hub bolts. A couple of the bolts had been removed to fit the spinner and  

these were the culprits in my case. Once the bolts were retorqued the slinging  

ceased for me.

 

Also, I'll mention that (in my case) the grease was building up inside of  

the spinner  before it worked it's way out of the prop root cutouts and was  

able to fly back to the windsreen......make sure you check the inside of your  

spinner real good and remove any grease that may be present before you replace  

the spinner.

 

For the archives

 

Rick Gray in Ohio at the Buffalo Farm - RV6 sold, RV8 completed, RV4  

finished and painting, RV10 and F1 Rocket under construction

_http://rv6rick.tripod.com/ohiovalleyrvators/_ 

(http://rv6rick.tripod.com/ohiovalleyrvators/) 



Guys,



I have 15.8 hours now on my RV and my new Hartzell is  still slinging out

some grease....just enough to see a few fine streaks  down the blade and

get drops of grease on my windshield, cowl, and  wings.  I believe

Hartzell says that if you let the prop sit in the  box for over 18 months

the seals will dry out and need to be replaced  because they'll leak.  Of

course when I ordered my prop I knew I'd be  flying in a year so this

wouldn't be a problem for me.  Yeah  right.  It sat in the box for two

years before I first ran the  engine...  



I have a hard time believing I'm the only one like  this so I'm wondering,

has anybody else experienced this problem?  If  so, did it ever go away? 

I'm not concerned about it from a safety  perspective--I can lube the hub

occasionally and make sure it doesn't dry  out in there--but it's a real

pain to clean up especially in the  canopy.  If anybody's replaced these

seals, can you remember how much  it set you back and where you had the

work  done?



Thanks,



--Mark Navratil

Cedar Rapids, Iowa

RV-8A N2D  flying 15.8 hours....love the flying, hate the  cleanup

afterwards

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

mstewart(at)iss.net
Guest

Posted: Tue Mar 21, 2006 4:58 am Post subject: CS prop slinging grease

Ditto for me.

Mine looked like it was build-up from the grease fittings, which I

replaced, before figuring out it was the hub bolts.



Do not archive.

Mike

--

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

alexpeterson(at)earthlink
Guest

Posted: Tue Mar 21, 2006 5:04 am Post subject: CS prop slinging grease

Mark, good advice from Rick, I had the same experience.  There was a pile of

grease inside the spinner, presumably from outside the seal, but within the

hub.  This grease worked its way out of the prop during the first handful of

hours, but then slowly crept out of the spinner.  My prop did, however, need

resealing around 500 hours/3 years.  If you should need to reseal, there are

two shops in this general area.  One is Maxwell at Crystal airport in

Minneapolis, and the other is Midwest Props in Kenosha, WI.  Both of these

shops will tell you that there are two problems with Hartzell factory props

- one is that they use a non O-ring seal, some sort of non circular section

seal.  These shops will use O-rings instead, as did Hartzell in the past.

The other problem is that the grease that is used by Hartzell is Aeroshell 6

for extremely cold operations, i.e., lower viscosity. They both recommend

using the higher viscosity grease Aeroshell 5 after reseal.



Alex Peterson

RV6-A N66AP 729 hours

Maple Grove, MN

 

 	  Quote: 	
		   

 

  

 Mark, I had this 'problem' as well with my Hartzell. My 

 didn't have  anything to do with 'shelf life'. All I did was 

 remove the spinner and retorque  all the hub bolts. A couple 

 of the bolts had been removed to fit the spinner and these 

 were the culprits in my case. Once the bolts were retorqued 

 the slinging ceased for me.

  

 Also, I'll mention that (in my case) the grease was building 

 up inside of the spinner  before it worked it's way out of 

 the prop root cutouts and was able to fly back to the 

 windsreen......make sure you check the inside of your spinner 

 real good and remove any grease that may be present before 

 you replace the spinner.

  

 For the archives

  

 Rick Gray in Ohio at the Buffalo Farm - RV6 sold, RV8 

 completed, RV4 finished and painting, RV10 and F1 Rocket 

 under construction _http://rv6rick.tripod.com/ohiovalleyrvators/_

 (http://rv6rick.tripod.com/ohiovalleyrvators/)

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

Larry Bowen

Joined: 09 Jan 2006
Posts: 802
Location: NC, USA

Posted: Tue Mar 21, 2006 6:04 am Post subject: CS prop slinging grease

My H. prop was resealed under warrenty because the quad seal was twisted 

during original assembly at the factory -- which resulted in a leak at 

the root of the prop.  I haven't heard of the o-ring and grease issues 

mentioned below....interesting.

More here:

http://bowenaero.com/mt3/archives/2005/06/prop_seal.html

--

Larry Bowen

Larry(at)BowenAero.com

http://BowenAero.com

Alex Peterson wrote:

 	  Quote: 	

 Mark, good advice from Rick, I had the same experience.  There was a pile of

 grease inside the spinner, presumably from outside the seal, but within the

 hub.  This grease worked its way out of the prop during the first handful of

 hours, but then slowly crept out of the spinner.  My prop did, however, need

 resealing around 500 hours/3 years.  If you should need to reseal, there are

 two shops in this general area.  One is Maxwell at Crystal airport in

 Minneapolis, and the other is Midwest Props in Kenosha, WI.  Both of these

 shops will tell you that there are two problems with Hartzell factory props

 - one is that they use a non O-ring seal, some sort of non circular section

 seal.  These shops will use O-rings instead, as did Hartzell in the past.

 The other problem is that the grease that is used by Hartzell is Aeroshell 6

 for extremely cold operations, i.e., lower viscosity. They both recommend

 using the higher viscosity grease Aeroshell 5 after reseal.

 Alex Peterson

 RV6-A N66AP 729 hours

 Maple Grove, MN

>

>

> 

>Mark, I had this 'problem' as well with my Hartzell. My 

>didn't have  anything to do with 'shelf life'. All I did was 

>remove the spinner and retorque  all the hub bolts. A couple 

>of the bolts had been removed to fit the spinner and these 

>were the culprits in my case. Once the bolts were retorqued 

>the slinging ceased for me.

> 

>Also, I'll mention that (in my case) the grease was building 

>up inside of the spinner  before it worked it's way out of 

>the prop root cutouts and was able to fly back to the 

>windsreen......make sure you check the inside of your spinner 

>real good and remove any grease that may be present before 

>you replace the spinner.

> 

>For the archives

> 

>Rick Gray in Ohio at the Buffalo Farm - RV6 sold, RV8 

>completed, RV4 finished and painting, RV10 and F1 Rocket 

>under construction _http://rv6rick.tripod.com/ohiovalleyrvators/_

>(http://rv6rick.tripod.com/ohiovalleyrvators/)

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress...

Stu McCurdy

Joined: 10 Jan 2006
Posts: 5
Location: Round Rock, TX

Posted: Tue Mar 21, 2006 6:20 am Post subject: CS prop slinging grease

After the residual grease stopped slinging within the first few hours on my RV-8, CS Hartzell, I had about 140 hrs when it started slinging again.  I took the spinner off and could see the grease trail coming from the parting surface on one side between two of the three bolts.  I called Hartzell, told them when I started flying it (still under the one year warranty from first flight) and how many hours I had on it, and they paid for a reseal under warranty at Jordan Propellor.  I watched when Jordan took it apart, you could definitely see where the white sealant between the parting surfaces was very thin at that area where the leak was.  No problems since reseal with 950 hours.



Stu McCurdy

RV-8 Flying

RV-3 Flying



-----------------------------------------------------

Time: 09:16:44 PM PST US

Subject: CS prop slinging grease

From: Mark E Navratil <czechsix(at)juno.com>






Guys,



I have 15.8 hours now on my RV and my new Hartzell is still slinging out

some grease....just enough to see a few fine streaks down the blade and

get drops of grease on my windshield, cowl, and wings.  I believe

Hartzell says that if you let the prop sit in the box for over 18 months

the seals will dry out and need to be replaced because they'll leak.  Of

course when I ordered my prop I knew I'd be flying in a year so this

wouldn't be a problem for me.  Yeah right.  It sat in the box for two

years before I first ran the engine...  



I have a hard time believing I'm the only one like this so I'm wondering,

has anybody else experienced this problem?  If so, did it ever go away? 

I'm not concerned about it from a safety perspective--I can lube the hub

occasionally and make sure it doesn't dry out in there--but it's a real

pain to clean up especially in the canopy.  If anybody's replaced these

seals, can you remember how much it set you back and where you had the

work done?



Thanks,



--Mark Navratil



<!-- BEGIN WEBMAIL STATIONERY -->

<!-- WEBMAIL STATIONERY noneset -->

After the residual grease stopped slinging within the first few hours on my RV-8, CS Hartzell, I had about 140 hrs when it started slinging again. I took the spinner off and could see the grease trail coming from the parting surface on one side between two of the three bolts. I called Hartzell, told them when I started flying it (still under the one year warranty from first flight) and how many hours I had on it, and they paid for a reseal under warranty at Jordan Propellor. I watched whenJordan took it apart, you could definitely see where the white sealant between the parting surfaces was very thin at that area where the leak was. No problems since reseal with 950 hours.



Stu McCurdy

RV-8 Flying

RV-3 Flying



-----------------------------------------------------

Time: 09:16:44 PM PST US

Subject: CS prop slinging grease

From: Mark E Navratil czechsix(at)juno.com



-- RV-List message posted by: Mark E Navratil czechsix(at)juno.com



Guys,



I have 15.8 hours now on my RV and my new Hartzell is still slinging out

some grease....just enough to see a few fine streaks down the blade and

get drops of grease on my windshield, cowl, and wings. I believe

Hartzell says that if you let the prop sit in the box for over 18 months

the seals will dry out and need to be replaced b

 ecause

 they'll leak. Of

course when I ordered my prop I knew I'd be flying in a year so this

wouldn't be a problem for me. Yeah right. It sat in the box for two

years before I first ran the engine... 



I have a hard time believing I'm the only one like this so I'm wondering,

has anybody else experienced this problem? If so, did it ever go away? 

I'm not concerned about it from a safety perspective--I can lube the hub

occasionally and make sure it doesn't dry out in there--but it's a real

pain to clean up especially in the canopy. If anybody's replaced these

seals, can you remember how much it set you back and where you had the

work done?



Thanks,



--Mark Navratil



<!-- END WEBMAIL STATIONERY -->

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

robbinsrv8(at)msn.com
Guest

Posted: Tue Mar 21, 2006 12:10 pm Post subject: CS prop slinging grease

 	  Quote: 	
		  Subject: RE: CS prop slinging grease

I have 15.8 hours now on my RV and my new Hartzell is still slinging out

some grease....>


	


 	  Quote: 	
		  

--Mark Navratil


	


Mark



I've had that problem since day one - that day being four years and 590 

hours ago.  However my situation may be a little different.  On my first 

flight, just seconds after liftoff, grease (at the time I thought it was 

oil) began covering my windscreen.  I made a quick trip around a shortened 

pattern and landed it by looking out the side as the grease had obsured my 

forward vision.



Found out that Hartzell had left out the ball in one of the grease fittings. 

  Got a new fitting and serviced the prop, but ever since then I get streaks 

on the windscreen.  I may have overserviced it.  I skipped one service 

interval and put less in now, and it seems to be getting better, but still 

just a little grease after each flight.  It's not enough to make me change 

the seals.



Mike Robbins

RV-8 N88MJ

Paine Field, Washington



do not archiive

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

Display posts from previous:

	Matronics Email Lists Forum Index -> RV-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum