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Wood prop torque?

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mjurotich(at)hst.nasa.gov
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Posted: Mon Jan 15, 2007 2:11 pm Post subject: Wood prop torque?

Folks



I have a RV 6A with 180 hp O260 A1A using 1/2 inch prop bolts for a 

wood prop.  What is the proper torque?  How often to re-torque?



Thanks in advance.

Matthew M. Jurotich



e-mail   mail to: <mjurotich(at)hst.nasa.gov>

phone   : 301-286-5919

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panamared5(at)brier.net
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Posted: Tue Jan 16, 2007 5:04 am Post subject: Wood prop torque?

 	  Quote: 	
		  

I have a RV 6A with 180 hp O260 A1A using 1/2 inch prop bolts for a wood 

prop.  What is the proper torque?  How often to re-torque?



Thanks in advance.


	


Normally this is determined by the prop manufacture.  Mine stated torque to 

312 inch pounds.  I also have an 180 0-360.  Re-torque every 25 hours (per 

manufacture).  I retorque after significant change in the weather, ie. from 

real hot to real cold (winter vs summer).



Bob

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johnd(at)wlcwyo.com
Guest

Posted: Tue Jan 16, 2007 7:12 am Post subject: Wood prop torque?

I used 240 to 280 inch pounds.

Can't remember where I got that. You might

Search the archives.



John L. Danielson

--

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ekells(at)sympatico.ca
Guest

Posted: Tue Jan 16, 2007 2:39 pm Post subject: Wood prop torque?

Wood props are "owned" by the manufacturer.  Do not search the archives. 

Look at the documentation supplied with the prop.  My prop was supplied by 

Ed Sterba.  I was the first RV-9A builder to use a wood prop with a 

O-235-N2C engine.  He was very PARTICIPATIVE.  Extremely helpful regarding 

my flight profile, offering several reworks to make my prop perfect  - 

aircraft to engine to personal mission profile.  The proven craftsmen take 

your prop as a personal obligation. I have recently run my engine at full 

strength - very quiet, little vibration, totally smooth.  I am anxious to 

repeat this with the canopy closed - and wearing my ANR headsets.  It's 

looking really good. I'm getting very itchy about spring ! !



Ernest Kells  RV-9A C-FKEL



 	  Quote: 	
		   



 I used 240 to 280 inch pounds.

 Can't remember where I got that. You might

 Search the archives.



 John L. Danielson

 

>

>I have a RV 6A with 180 hp O260 A1A using 1/2 inch prop bolts for a

 wood

>prop.  What is the proper torque?  How often to re-torque?

>

>Thanks in advance.



 Normally this is determined by the prop manufacture.  Mine stated torque

 to

 312 inch pounds.  I also have an 180 0-360.  Re-torque every 25 hours

 (per

 manufacture).  I retorque after significant change in the weather, i.e..

 from

 real hot to real cold (winter vs. summer).



 Bob

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