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Torque Wrench

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luis(at)cristabelle.net
Guest

Posted: Fri Feb 05, 2010 12:43 pm Post subject: Torque Wrench

How soon is the torque wrench needed and what size is needed?



thanks

Luis



On Jan 31, 2010, at 12:03 AM, Michael Kraus wrote:

 	  Quote: 	
		  I have a MT, but not flying yet.  Bought it because it is smoooooth.....  Wish I hadn't because it makes taking the lower cowl off a biotch.....  Since the blended airfoil Hartzell is faster and makes the cowl infinitely easier to get off, I wish I'd have purchased it....

That is just my opinion.....

-Mike



Sent from my iPhone



On Jan 30, 2010, at 9:54 PM, Roxanne and Mike Lefever <roxianmike(at)msn.com (roxianmike(at)msn.com)> wrote:



 	  Quote: 	
		   Anyone on the list purchase the three blade MT and if so what is the opinion of this set up versus the Hartzell which is about 50%more expensive? 		 	   		  	  Quote: 	
		  

	






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href="http://forums.matronics.com">http://forums.matronics.com

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 [quote][b]

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jeff(at)westcottpress.com
Guest

Posted: Fri Feb 05, 2010 2:08 pm Post subject: Torque Wrench

Hi Luis,



You'll need to torque the counter balance weight on the rudder, but that can be done later... you get in to much more significant use of the wrench on the wings/fuel tanks and a painful amount when joining the fuselage halves.

A ratchet style wrench, 1/4" or 1/2" drive measuring in inch lbs from Craftsman suffers a little bit for accuracy, but you'll have to monkey around quite a bit with the more accurate beam style wrench to access the nuts when joining the spar pass-throughs.  I'm sure Snap-On has the perfect tool.  I'm also sure I can't afford it.

Jeff Carpenter

40304





On Feb 5, 2010, at 12:42 PM, Luis wrote:

 	  Quote: 	
		  How soon is the torque wrench needed and what size is needed?



thanks

Luis



On Jan 31, 2010, at 12:03 AM, Michael Kraus wrote:

 	  Quote: 	
		  I have a MT, but not flying yet.  Bought it because it is smoooooth.....  Wish I hadn't because it makes taking the lower cowl off a biotch.....  Since the blended airfoil Hartzell is faster and makes the cowl infinitely easier to get off, I wish I'd have purchased it....

That is just my opinion.....

-Mike



Sent from my iPhone



On Jan 30, 2010, at 9:54 PM, Roxanne and Mike Lefever <roxianmike(at)msn.com (roxianmike(at)msn.com)> wrote:



 	  Quote: 	
		   Anyone on the list purchase the three blade MT and if so what is the opinion of this set up versus the Hartzell which is about 50%more expensive? 		 	   		  	  Quote: 	
		  

	






href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List

href="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/contribution



	






href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List

href="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/contribution



	


	


 [quote][b]

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Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Fri Feb 05, 2010 6:22 pm Post subject: Re: Torque Wrench

Smaller is better. A foot-lb wrench is nearly useless. AN3 bolts only go to 25 inch pounds. I suggest a 1/4" drive, inch pound one. It is easy enough to check their calibration.

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_________________
Bob Turner
RV-10 QB

johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Sat Feb 06, 2010 7:04 am Post subject: Re: Torque Wrench

Luis,

Definitely go for a 1/4" drive that measures in inch-pounds. I use mine a lot, while my 3/8" drive I've only used once or twice. A 1/2" drive is virtually useless for our kind of work, except maybe the engine.

You can probably find a decent one on ebay:



http://shop.ebay.com/?_from=R40&_trksid=p3907.m38.l1311&_nkw=torque+wrench&_sacat=See-All-Categories



Hope the link works,

John

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_________________
#40572 Phase One complete in 2011

AirMike

Joined: 27 Feb 2007
Posts: 514
Location: Nevada

Posted: Sat Feb 06, 2010 11:16 pm Post subject: Torque Wrench

You will be using it a lot, so you might as well get it now. The 1/4" drive is the most used, but as you move to final assembly you need the others sizes also. Since you are literally betting your life on it's measurement get a good one that is calibrated. Otherwise buy a good used one that is calibrated or get it calibrated. Cleveland tools 

 ( cleavelandtoolstore.com )

 sells a very good CDI branded wrench  (calibrated) that is actually a snap-on wrench (identical) except for the logo. It is not cheap (about $189) but do you want to trust your torque values to a Harbor Freight wrench. Also a couple of tubes of torque lacquer, so that you do not forget what you worked on.

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_________________
See you OSH '18
Q/B - sold.

bwestfall

Joined: 22 Oct 2008
Posts: 131
Location: Portland, OR

Posted: Sun Feb 07, 2010 8:55 am Post subject: Torque Wrench

I'd second that.  The CDI brand torque wrenches work great.  The only thing

I'd add it that you get the model that starts at 10 in/lbs instead of 20

in/lbs.  AN3 nuts get tightened to 20-25 in/lbs and it best not to use a

wrench right at the starting value.  I got a brand new cdi wrench on ebay

for $89.  Deals can be had if you have the time to wait and look.



-Ben



--

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