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Hartzell-Style Propeller Wrench

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Matt Dralle
Site Admin

Joined: 08 Nov 2005
Posts: 25935
Location: Livermore CA USA

Posted: Mon Feb 08, 2010 8:22 pm Post subject: Hartzell-Style Propeller Wrench

Dear Listers,



I've got this Propeller wrench from Avery:



http://www.averytools.com/p-734-hartzell-style-propeller-wrench.aspx



But what is the multiplier for the torque conversion when using this extension on a standard 1/2" drive torque wrench?



One other question, on those hartzell prop bolts, do you run a safety wire though those rollpins pins in the bolt heads?



Matt Dralle

RV-8 #82880 N998RV

http://www.mattsrv8.com Matt's RV-8 Construction Log

Fiberglass Around Wheel Pants...

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_________________
Matt Dralle
Matronics Email List Administrator

dsvs(at)ca.rr.com
Guest

Posted: Mon Feb 08, 2010 9:16 pm Post subject: Hartzell-Style Propeller Wrench

Matt,

I can't remember the conversion and I am sure that someone else will answer

that before I can get to my hangar and look at my torque wrench that has the

conversion in the box.  I can say yes you do safety wire the bolts.  Alxo it

looks like the piece you made behind the prop cut out in the spinner is very

close to the prop.  You should be very carefull with that as the4 prop will

flex backwards and will wear if the spinner filler is too close.  Both Dan C

and I had this problem.  Don



--

JohnInReno

Joined: 08 Sep 2007
Posts: 150

Posted: Mon Feb 08, 2010 9:49 pm Post subject: Hartzell-Style Propeller Wrench

Matt,

 

 First, thanks for the list.

 

 The torque is a ratio of the claw to the handle. If the crow foot is 1" from the square hole to the center of the nut and the handle is 10" from the square peg to the center of the handle, then the ratio is 10%. If you apply 100 in/lbs it will be 110 at the nut.

 

 John Morgensen

 RV4 - flying

 RV9A - Wiring

 

 Matt Dralle wrote: [quote]    	  Quote: 	
		  Dear Listers,



I've got this Propeller wrench from Avery:



http://www.averytools.com/p-734-hartzell-style-propeller-wrench.aspx



But what is the multiplier for the torque conversion when using this extension on a standard 1/2" drive torque wrench?



One other question, on those hartzell prop bolts, do you run a safety wire though those rollpins pins in the bolt heads?



Matt Dralle

RV-8 #82880 N998RV

http://www.mattsrv8.com Matt's RV-8 Construction Log

Fiberglass Around Wheel Pants...

  	
   

   

   

      



      

   

    [b]

_________________
John Morgensen
RV-9A - Born on July 3, 2013
RV4 - for sale

n8zg(at)mchsi.com
Guest

Posted: Tue Feb 09, 2010 4:52 am Post subject: Hartzell-Style Propeller Wrench

…and if you clock the adapter so it’s 90-deg from the torque wrench, no math is required.  

   

Neal  

RV-7 N8ZG  

   

==================  

Matt,

 

 First, thanks for the list.

 

 The torque is a ratio of the claw to the handle. If the crow foot is 1" from the square hole to the center of the nut and the handle is 10" from the square peg to the center of the handle, then the ratio is 10%. If you apply 100 in/lbs it will be 110 at the nut.

 

 John Morgensen

 RV4 - flying

 RV9A - Wiring

 

 Matt Dralle wrote:    	  Quote: 	
		  Dear Listers, I've got this Propeller wrench from Avery: http://www.averytools.com/p-734-hartzell-style-propeller-wrench.aspx But what is the multiplier for the torque conversion when using this extension on a standard 1/2" drive torque wrench? One other question, on those hartzell prop bolts, do you run a safety wire though those rollpins pins in the bolt heads?  	
0 	  Quote: 	
		   	
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        [quote][b]

FisherPaulA(at)johndeere.
Guest

Posted: Tue Feb 09, 2010 5:29 am Post subject: Hartzell-Style Propeller Wrench

Matt,

You can use one of the converters online to do the calculations for you like this one:

http://www.norbar.com/Calculators/TorqueWrenchExtensionCalculator/tabid/70/Default.aspx



They also show you the math behind it if you'd rather do it yourself.



Paul A. Fisher

RV-7A N18PF ~70 hours waiting for the snow to stop!



--

timb

Joined: 16 Apr 2008
Posts: 77
Location: Frankston, Texas

Posted: Tue Feb 09, 2010 6:00 am Post subject: Hartzell-Style Propeller Wrench

I would be interested in hearing from any prop shop folks on the list about

the safety wire.  I was told by my inspector the roll pins were not there

for safety wire and the prop was not required to be safety wired.  I

contacted a repair shop nearby at the time and was told the same thing.  My

prop bolts are not and have never been safety wired.  I know this will bring

lots of comments but just know I am not advocating it either way.  I am

curious if there is anybody that knows the real answer based on something

real.  Out of curiosity does anyone know if they are safety wired on

certified aircraft when they leave the factory?



Tim Bryan

RV-6 Flying



--

_________________
Tim Bryan
RV-6 Flying
N616TB

Kellym

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

Posted: Tue Feb 09, 2010 6:24 am Post subject: Hartzell-Style Propeller Wrench

Go look around the ramp. I doubt you will find any certified planes with 

Hartzells that are not safety-wired. Yes, safety wiring the prop nuts is 

a major pain in the backsides.

Or you could just read the owners manual(aka RTFM) available for download at

http://www.hartzellprop.com/product_support/index_support.htm



Basically, it says to safety wire if required by the aircraft 

maintenance manual. Since you create that, I guess you could avoid 

safetying. So I guess your inspector was technically correct, but I 

think you will find in general Hartzells are safetied like most props 

retained by conventional bolts.

Kelly

EAA Tech counselor

A&P/IA



Tim Bryan wrote:

[quote] 

 

 I would be interested in hearing from any prop shop folks on the list about

 the safety wire.  I was told by my inspector the roll pins were not there

 for safety wire and the prop was not required to be safety wired.  I

 contacted a repair shop nearby at the time and was told the same thing.  My

 prop bolts are not and have never been safety wired.  I know this will bring

 lots of comments but just know I am not advocating it either way.  I am

 curious if there is anybody that knows the real answer based on something

 real.  Out of curiosity does anyone know if they are safety wired on

 certified aircraft when they leave the factory?

 

 Tim Bryan

 RV-6 Flying

 

 --

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

dickseiders(at)gmail.com
Guest

Posted: Tue Feb 09, 2010 6:25 am Post subject: Hartzell-Style Propeller Wrench

ditto on the spinner clearance. The view shown will definitley cut te prop. (happened to me). I cut the filler plate all the way back to the backing plate to achieve sufficent clearance, and it was just enough. 

  I am 99% certain the safety wire passes thru the roll pins.

 Dick

 On Mon, Feb 8, 2010 at 11:17 PM, Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)> wrote:

 [quote]

Dear Listers,



I've got this Propeller wrench from Avery:



http://www.averytools.com/p-734-hartzell-style-propeller-wrench.aspx

 

But what is the multiplier for the torque conversion when using this extension on a standard 1/2" drive torque wrench?



One other question, on those hartzell prop bolts, do you run a safety wire though those rollpins pins in the bolt heads?

 

Matt Dralle

RV-8 #82880 N998RV

http://www.mattsrv8.com Matt's RV-8 Construction Log

Fiberglass Around Wheel Pants...

[b]

yenduc(at)me.com
Guest

Posted: Tue Feb 09, 2010 7:40 am Post subject: Hartzell-Style Propeller Wrench

Yes you so use safety wire. I used .041.  It is very difficult to use  

-- particularly in the close quarters.  A propeller shop near here  

recommends .032.  Hartzel recommends .041 in the manual .  I've heard  

some say that they know of individuals who don't use safety wire at  

all --- I would not recommend this!!



good luck

dave

On Feb 8, 2010, at 9:12 PM, Don wrote:



[quote] 



 Matt,

 I can't remember the conversion and I am sure that someone else will  

 answer

 that before I can get to my hangar and look at my torque wrench that  

 has the

 conversion in the box.  I can say yes you do safety wire the bolts.   

 Alxo it

 looks like the piece you made behind the prop cut out in the spinner  

 is very

 close to the prop.  You should be very carefull with that as the4  

 prop will

 flex backwards and will wear if the spinner filler is too close.   

 Both Dan C

 and I had this problem.  Don



 --

Gary.A.Sobek

Joined: 09 Jan 2006
Posts: 217
Location: SoCAL USA

Posted: Tue Feb 09, 2010 7:43 am Post subject: Hartzell-Style Propeller Wrench

Matt:



The Owner's Manual for the prop says that it needs to be safety wired.



I will confess that I flew my RV-6 for 12-years and over 2 C000 hours without the safety wire.  I did safety wire it after I had it overhauled.  I looked up the torque in the Owner's Manual and found the note about safety wiring it after the overhaul re-installation.



The easy way for the torque is to just make sure that the wrench is 90 degrees to the torque wrench so that the conversion is one to one.



Gary A. Sobek 

"My Sanity" RV-6 N157GS O-320 Hartzell C  

2 C2341+ Flying Hours So. CA C USA 



[quote] --

Larry Bowen

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

Posted: Tue Feb 09, 2010 8:33 am Post subject: Hartzell-Style Propeller Wrench

I think I recall finding answers to all these questions in the

hartzell manual that came with the prop.



On 2/9/10, richard seiders <dickseiders(at)gmail.com> wrote:

 	  Quote: 	
		   ditto on the spinner clearance. The view shown will definitley cut te prop.

 (happened to me). I cut the filler plate all the way back to the backing

 plate to achieve sufficent clearance, and it was just enough.

 I am 99% certain the safety wire passes thru the roll pins.

 Dick



 On Mon, Feb 8, 2010 at 11:17 PM, Matt Dralle <dralle(at)matronics.com> wrote:



>

> Dear Listers,

>

> I've got this Propeller wrench from Avery:

>

> http://www.averytools.com/p-734-hartzell-style-propeller-wrench.aspx

>

> But what is the multiplier for the torque conversion when using this

> extension on a standard 1/2" drive torque wrench?

>

> One other question, on those hartzell prop bolts, do you run a safety wire

> though those rollpins pins in the bolt heads?

>

> Matt Dralle

> RV-8 #82880 N998RV

> http://www.mattsrv8.com Matt's RV-8 Construction Log

> Fiberglass Around Wheel Pants...

>




	




-- 

--

Larry Bowen

Larry(at)BowenAero.com

http://BowenAero.com

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

n223rv(at)wolflakeairport
Guest

Posted: Tue Feb 09, 2010 9:50 am Post subject: Hartzell-Style Propeller Wrench

I have always safety wired mine.....  Through the roll pins....



Sent from my iPhone



On Feb 9, 2010, at 9:24 AM, richard seiders <dickseiders(at)gmail.com (dickseiders(at)gmail.com)> wrote:



[quote]ditto on the spinner clearance. The view shown will definitley cut te prop. (happened to me). I cut the filler plate all the way back to the backing plate to achieve sufficent clearance, and it was just enough. 

  I am 99% certain the safety wire passes thru the roll pins.

 Dick

 On Mon, Feb 8, 2010 at 11:17 PM, Matt Dralle <[url=mailto:dralle(at)matronics.com]dralle(at)matronics.com (dralle(at)matronics.com)[/url]> wrote:

  	  Quote: 	
		  

Dear Listers,



I've got this Propeller wrench from Avery:



http://www.averytools.com/p-734-hartzell-style-propeller-wrench.aspx

 

But what is the multiplier for the torque conversion when using this extension on a standard 1/2" drive torque wrench?



One other question, on those hartzell prop bolts, do you run a safety wire though those rollpins pins in the bolt heads?

 

Matt Dralle

RV-8 #82880 N998RV

http://www.mattsrv8.com Matt's RV-8 Construction Log

Fiberglass Around Wheel Pants...



	


[b]

Tailgummer(at)aol.com
Guest

Posted: Tue Feb 09, 2010 10:49 am Post subject: Hartzell-Style Propeller Wrench

Hmmm. My Hartzell manual specified 0.032" safety wire.

    John D

  [quote][b]

Tailgummer(at)aol.com
Guest

Posted: Thu Feb 11, 2010 12:01 pm Post subject: Hartzell-Style Propeller Wrench

Hmmm. My Hartzell manual specified 0.032" safety wire.

    John D

  [quote][b]

FrancisWong

Joined: 18 Aug 2020
Posts: 1

Posted: Wed Nov 25, 2020 5:35 am Post subject: Re: Hartzell-Style Propeller Wrench

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