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Hartzell-Style Propeller Wrench

 
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Matt Dralle
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Joined: 08 Nov 2005
Posts: 21398
Location: Livermore CA USA

PostPosted: Mon Feb 08, 2010 8:22 pm    Post subject: Hartzell-Style Propeller Wrench Reply with 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...


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

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JohnInReno



Joined: 08 Sep 2007
Posts: 150

PostPosted: Mon Feb 08, 2010 9:49 pm    Post subject: Hartzell-Style Propeller Wrench Reply with quote

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]


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PostPosted: Tue Feb 09, 2010 4:52 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

…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]


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PostPosted: Tue Feb 09, 2010 5:29 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

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!

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timb



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

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

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Kellym



Joined: 10 Jan 2006
Posts: 1654
Location: Sun Lakes AZ

PostPosted: Tue Feb 09, 2010 6:24 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

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

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PostPosted: Tue Feb 09, 2010 6:25 am    Post subject: Hartzell-Style Propeller Wrench Reply with 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 (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]


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yenduc(at)me.com
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PostPosted: Tue Feb 09, 2010 7:40 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

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

--


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Gary.A.Sobek



Joined: 09 Jan 2006
Posts: 212
Location: SoCAL USA

PostPosted: Tue Feb 09, 2010 7:43 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

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] --


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Larry Bowen



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

PostPosted: Tue Feb 09, 2010 8:33 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

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


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PostPosted: Tue Feb 09, 2010 9:50 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

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]


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PostPosted: Tue Feb 09, 2010 10:49 am    Post subject: Hartzell-Style Propeller Wrench Reply with quote

Hmmm. My Hartzell manual specified 0.032" safety wire.
John D
[quote][b]


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PostPosted: Thu Feb 11, 2010 12:01 pm    Post subject: Hartzell-Style Propeller Wrench Reply with quote

Hmmm. My Hartzell manual specified 0.032" safety wire.
John D
[quote][b]


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Joined: 18 Aug 2020
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PostPosted: Wed Nov 25, 2020 5:35 am    Post subject: Re: Hartzell-Style Propeller Wrench Reply with quote

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