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viable alternatives to the Hartzell C/S Prop

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windsaloft(at)rmisp.com
Guest

Posted: Fri Jan 05, 2007 4:25 pm Post subject: viable alternatives to the Hartzell C/S Prop

I've not been able to find anything in the archives on this, so will ask:



What viable alternatives to the Hartzell C/S props exist for my RV-6A?



I just got popped by the hub AD -- it is mounted on my O-360 A1A engine. 

I think that electrofluxing each 100 hrs AND at annual will break me

quickly ($375/iteration plus labor).  In addition to the hub hitting this

AD, the blades have been identified by the prop shop as barely out of

thickness tolerances at the 30" station, so new blades are needed.



My options that I am aware of, a new Hartzell hub ($1700) plus blades

($4400) plus labor ($1700) puts me up in new prop realm rather than foot

the bill for a rebuild.



I have been out of building since 1999, and am simply flying (or trying

to!) and now need to do a quick survey of available C/S prop alternatives

that I can use to replace mine.



Email direct is preferred:

windsaloft(at)rmisp.com

terri watson

RV-6A N1977D

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lamar(at)takeflighttexas.
Guest

Posted: Fri Jan 05, 2007 5:16 pm Post subject: viable alternatives to the Hartzell C/S Prop

I know the American Propeller guys have something that does not have a speed 

restriction or AD.  Bob Honig there can help you.  Good luck!!

Lamar

N969LS



---

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pitts_pilot(at)bellsouth.
Guest

Posted: Fri Jan 05, 2007 6:00 pm Post subject: viable alternatives to the Hartzell C/S Prop

I don't know anything about the AD, but was Just thinking on the 

problem.  If you can dye check instead of electrofluxing, you can do 

that yourself ..... it just depends on when/where the failure mode is. 

 As for the blades, you don't need a certified blade so thank the prop 

shop and continue to use them.  You were comfortable using the prop 

before the prop shop got it, weren't you???

Just musing.

Linn



windsaloft(at)rmisp.com wrote:



 	  Quote: 	
		  



I've not been able to find anything in the archives on this, so will ask:



What viable alternatives to the Hartzell C/S props exist for my RV-6A?



I just got popped by the hub AD -- it is mounted on my O-360 A1A engine. 

I think that electrofluxing each 100 hrs AND at annual will break me

quickly ($375/iteration plus labor).  In addition to the hub hitting this

AD, the blades have been identified by the prop shop as barely out of

thickness tolerances at the 30" station, so new blades are needed.



My options that I am aware of, a new Hartzell hub ($1700) plus blades

($4400) plus labor ($1700) puts me up in new prop realm rather than foot

the bill for a rebuild.



I have been out of building since 1999, and am simply flying (or trying

to!) and now need to do a quick survey of available C/S prop alternatives

that I can use to replace mine.



Email direct is preferred:

windsaloft(at)rmisp.com

terri watson

RV-6A N1977D

- The Matronics RV-List Email Forum -

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rocketbob(at)gmail.com
Guest

Posted: Fri Jan 05, 2007 6:28 pm Post subject: viable alternatives to the Hartzell C/S Prop

My prop shop guy told me in the small number of hubs he'd seen with cracks, they start from the zerk holes.  He also told me that when the zerk holes in the are properly chamfered, he's never seen cracks in those hubs, and he's overhauled hundreds of compact-hub Hartzell's.  The ones that did have cracks spit grease, and did not fail catastrophically. 



Regards,

Bob Japundza

RV-6 flying F1 under const.



On 1/5/07, windsaloft(at)rmisp.com (windsaloft(at)rmisp.com) < windsaloft(at)rmisp.com (windsaloft(at)rmisp.com)> wrote:[quote]--> RV-List message posted by:  windsaloft(at)rmisp.com (windsaloft(at)rmisp.com)



I've not been able to find anything in the archives on this, so will ask:



What viable alternatives to the Hartzell C/S props exist for my RV-6A?



I just got popped by the hub AD -- it is mounted on my O-360 A1A engine. 

I think that electrofluxing each 100 hrs AND at annual will break me

quickly ($375/iteration plus labor).  In addition to the hub hitting this

AD, the blades have been identified by the prop shop as barely out of 

thickness tolerances at the 30" station, so new blades are needed.



My options that I am aware of, a new Hartzell hub ($1700) plus blades

($4400) plus labor ($1700) puts me up in new prop realm rather than foot 

the bill for a rebuild.



I have been out of building since 1999, and am simply flying (or trying

to!) and now need to do a quick survey of available C/S prop alternatives

that I can use to replace mine.

 

[b]

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khorton01(at)rogers.com
Guest

Posted: Fri Jan 05, 2007 6:37 pm Post subject: viable alternatives to the Hartzell C/S Prop

Considering the potential consequences of a prop hub or blade failure  

(engine comes off the mount, then loss of control due to very aft CG,  

followed by fatal crash), this is not a place to cut corners.  I  

highly recommend compliance with the AD, and following Hartzell's  

guidelines on blade dimension tolerances.



Kevin Horton



On 5 Jan 2007, at 21:02, linn Walters wrote:



 	  Quote: 	
		   

 <pitts_pilot(at)bellsouth.net>



 I don't know anything about the AD, but was Just thinking on the  

 problem.  If you can dye check instead of electrofluxing, you can  

 do that yourself ..... it just depends on when/where the failure  

 mode is. As for the blades, you don't need a certified blade so  

 thank the prop shop and continue to use them.  You were comfortable  

 using the prop before the prop shop got it, weren't you???

 Just musing.

 Linn



 windsaloft(at)rmisp.com wrote:



> 

>

> I've not been able to find anything in the archives on this, so  

> will ask:

>

> What viable alternatives to the Hartzell C/S props exist for my  

> RV-6A?

>

> I just got popped by the hub AD -- it is mounted on my O-360 A1A  

> engine. I think that electrofluxing each 100 hrs AND at annual  

> will break me

> quickly ($375/iteration plus labor).  In addition to the hub  

> hitting this

> AD, the blades have been identified by the prop shop as barely out of

> thickness tolerances at the 30" station, so new blades are needed.

>

> My options that I am aware of, a new Hartzell hub ($1700) plus blades

> ($4400) plus labor ($1700) puts me up in new prop realm rather  

> than foot

> the bill for a rebuild.

>

> I have been out of building since 1999, and am simply flying (or  

> trying

> to!) and now need to do a quick survey of available C/S prop  

> alternatives

> that I can use to replace mine.

>

> Email direct is preferred:

> windsaloft(at)rmisp.com

> terri watson

> RV-6A N1977D

>

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LessDragProd(at)aol.com
Guest

Posted: Fri Jan 05, 2007 8:19 pm Post subject: viable alternatives to the Hartzell C/S Prop

There are some practical propeller alternatives listed on my website, www.lessdrag.com

  

 There are no midrange RPM restrictions on these propellers when used  on the Lyc. 360 engine.

  

 Regards,

 Jim Ayers

 (805) 795-5377

  

 In a message dated 01/05/2007 4:27:13 PM Pacific Standard Time,  windsaloft(at)rmisp.com writes:

  	  Quote: 	
		  -->    RV-List message posted by: windsaloft(at)rmisp.com



I've not been able to    find anything in the archives on this, so will ask:



What viable    alternatives to the Hartzell C/S props exist for my RV-6A?



I just got    popped by the hub AD -- it is mounted on my O-360 A1A engine. 

I think that    electrofluxing each 100 hrs AND at annual will break me

quickly    ($375/iteration plus labor).  In addition to the hub hitting this

AD,    the blades have been identified by the prop shop as barely out of

thickness    tolerances at the 30" station, so new blades are needed.



My options    that I am aware of, a new Hartzell hub ($1700) plus blades

($4400) plus    labor ($1700) puts me up in new prop realm rather than foot

the bill for a    rebuild.



I have been out of building since 1999, and am simply flying    (or trying

to!) and now need to do a quick survey of available C/S prop    alternatives

that I can use to replace mine.



Email direct is    preferred:

windsaloft(at)rmisp.com

terri watson

RV-6A  N1977D

	


 

  

  [quote][b]

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Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Fri Jan 05, 2007 9:31 pm Post subject: viable alternatives to the Hartzell C/S Prop

If you know your blades are about worn out, the best alternative is 

Hartzell's offer of a trade in for new prop at ~$5600. Putting a new hub 

together with new blades at individual parts pricing and labor makes no 

sense. Also, a new prop will have more meat to it, and give you full 

design performance, something old blades won't.

BTW, the testing is eddy current, not magnaflux or dye penetrant. Shops 

have been doing it for as little as $150.



Kevin Horton wrote:

 	  Quote: 	
		   



 Considering the potential consequences of a prop hub or blade failure 

 (engine comes off the mount, then loss of control due to very aft CG, 

 followed by fatal crash), this is not a place to cut corners.  I 

 highly recommend compliance with the AD, and following Hartzell's 

 guidelines on blade dimension tolerances.



 Kevin Horton



 On 5 Jan 2007, at 21:02, linn Walters wrote:



> 

>

> I don't know anything about the AD, but was Just thinking on the 

> problem.  If you can dye check instead of electrofluxing, you can do 

> that yourself ..... it just depends on when/where the failure mode 

> is. As for the blades, you don't need a certified blade so thank the 

> prop shop and continue to use them.  You were comfortable using the 

> prop before the prop shop got it, weren't you???

> Just musing.

> Linn

>

> windsaloft(at)rmisp.com wrote:

>

>> 

>>

>> I've not been able to find anything in the archives on this, so will 

>> ask:

>>

>> What viable alternatives to the Hartzell C/S props exist for my RV-6A?

>>

>> I just got popped by the hub AD -- it is mounted on my O-360 A1A 

>> engine. I think that electrofluxing each 100 hrs AND at annual will 

>> break me

>> quickly ($375/iteration plus labor).  In addition to the hub hitting 

>> this

>> AD, the blades have been identified by the prop shop as barely out of

>> thickness tolerances at the 30" station, so new blades are needed.

>>

>> My options that I am aware of, a new Hartzell hub ($1700) plus blades

>> ($4400) plus labor ($1700) puts me up in new prop realm rather than 

>> foot

>> the bill for a rebuild.

>>

>> I have been out of building since 1999, and am simply flying (or trying

>> to!) and now need to do a quick survey of available C/S prop 

>> alternatives

>> that I can use to replace mine.

>>

>> Email direct is preferred:

>> windsaloft(at)rmisp.com

>> terri watson

>> RV-6A N1977D

>>

>>

>>

>>

>>

>>

>>

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

JVanLaak(at)aol.com
Guest

Posted: Sat Jan 06, 2007 5:31 am Post subject: viable alternatives to the Hartzell C/S Prop

Does anyone have experience with Avia automatic propellers http://www.aviapropeller.com/ ?  I  looked at one on display at Sun N Fun and it was appealing.

  

 Jim Van Laak

 RV-6 N79RL

  [quote][b]

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