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torque wrench

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carlossa52(at)gmail.com
Guest

Posted: Tue Jul 24, 2007 6:10 pm Post subject: torque wrench

Hello, all

I am ready to acquire a torque wrench. (Actually, it'll have to be two - read on.)

I took a look on the net and found a wide range of prices (from around $30 to many hundreds).

Then I searched the Z-list archives and found several tips. This one, in response to a query from Bill Morelli is on top of my list: 



 	  Quote: 	
		  [b]I have two torque wrenches.  One 20 to 200 Inch/Lbs.  The other is 10 to 150Foot/Lbs.Bought them from JC Whitney $22 for one and $24 (US) for the other.Leo Gates

[/b] 	
These wrenches are still in the approximate price range, even though the posting dates to July 31, 1998!

http://www.jcwhitney.com



 QUESTION: the specs mention 1/4" and 1/2" drive (and some others 3/8").  Is that the size of the square "peg" where the socket inserts?



Thanks in advance



Carlos

CH601-HD, plans 

Montreal, Canada



  [quote][b]

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Jeyoung65(at)aol.com
Guest

Posted: Tue Jul 24, 2007 6:21 pm Post subject: torque wrench

In a message dated 7/24/2007 10:11:38 P.M. Eastern Standard Time,  carlossa52(at)gmail.com writes:

  	  Quote: 	
		  Carlos 	


 

 Carlos, you are right, 1/4, 3/8. and 1/2 is the size of the  sq. drive. 3/8 would be a good size for building this aircraft. Jerry  Ga

 DO NOT ARCHIVE



Get a sneak peek of the all-new AOL.com.

  [quote][b]

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planecrazydld(at)yahoo.co
Guest

Posted: Wed Jul 25, 2007 2:18 am Post subject: torque wrench

Hi Carlos;



This is not meant to be offesnive in any way - smiply information that is critical.



The use of a torque wrench is a skill - and MANY ways of using it will result in incorrect values. This is one place where I cannot think of any source other than the AC65-9, -12, or -15 that MIGHT define limits for use.



Among the issues involved in the use of a torque wrench:



Use a torque wrench in such a way that the force applied to the end of the handle is the only force applied to the fastener; take pains to isolate gripping or positioning forces (hand over the socket end to position, etc) from adding or reducing the torque applied/measured.



Do not torque the head of a fastener unless specifically instructed to and the torque requirement listed is for that condition. Since the bolt "washer face" is turning with the bolt and not providing an intermediate sliding interface like a washer under a nut, there is a torque value that is related to  that condition - as there is for any shank friction between the fastener and the stack clamped.



Make sure that the threads are dry or lubricated as specified in the instruction as that will grossly affect the clamping force of the fastener.



If torque is required on a "self-locking" nut make sure that you measure the "running torque" or the torque value that is required to simply run the nut down the threads due to the locking feature of the nut. Usually the running torque is added to the torque required for the installation.



The use of an extension arm or crows foot wrench with a torque wrench involve other considerations. Refer to the referenced ACs.



Jeyoung65(at)aol.com wrote: 	  Quote: 	
		        In a message dated 7/24/2007 10:11:38 P.M. Eastern Standard Time,  carlossa52(at)gmail.com writes:

  	  Quote: 	
		  Carlos 	


 

 Carlos, you are right, 1/4, 3/8. and 1/2 is the size of the  sq. drive. 3/8 would be a good size for building this aircraft. Jerry  Ga

 DO NOT ARCHIVE



Get a sneak peek of the all-new [/b] 	
[/quote]



    [quote][b]

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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hrs1(at)frontiernet.net
Guest

Posted: Wed Jul 25, 2007 5:13 am Post subject: torque wrench

try Harbor Freight.  Robert Schoenberger  do not archive



Carlos Sa wrote:

 	  Quote: 	
		   Hello, all

 I am ready to acquire a torque wrench. (Actually, it'll have to be two 

 - read on.)

 I took a look on the net and found a wide range of prices (from around 

 $30 to many hundreds).

 Then I searched the Z-list archives and found several tips. This one, 

 in response to a query from Bill Morelli is on top of my list:



 **I have two torque wrenches.  One 20 to 200 Inch/Lbs.  The other is 10 to 150

 Foot/Lbs.

 Bought them from JC Whitney $22 for one and $24 (US) for the other.



 Leo Gates

 **

 These wrenches are still in the approximate price range, even though 

 the posting dates to July 31, 1998!

 http://www.jcwhitney.com



 QUESTION: the specs mention 1/4" and 1/2" drive (and some others 

 3/8").  Is that the size of the square "peg" where the socket inserts?



 Thanks in advance



 Carlos

 CH601-HD, plans

 Montreal, Canada



 *

 *

 ------------------------------------------------------------------------

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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larry(at)macsmachine.com
Guest

Posted: Wed Jul 25, 2007 6:19 am Post subject: torque wrench

Carlos,

The ranges you've selected are fine.  The ground adjustable prop is 

probably where most of your repeat

tightening will occur.  I'd look carefully at the head size for its 

clearance within the hub on a nut.  Otherwise, you'll

find the torque wrench has to be applied to the bolt from outside on the 

front face. I recommend you go with 3/8" if

that's what's mostly in your tool box.  Not sure why it seems that only 

expensive torque wrenches have good clearance

heads.  That by itself is not a deal breaker. Torquing the bolt rather 

than the nut is acceptable when necessary.



Larry McFarland 601HDS at www.macsmachine.com



Carlos Sa wrote:

 	  Quote: 	
		   Hello, all

 I am ready to acquire a torque wrench. (Actually, it'll have to be two 

 - read on.)

 I took a look on the net and found a wide range of prices (from around 

 $30 to many hundreds).

 Then I searched the Z-list archives and found several tips. This one, 

 in response to a query from Bill Morelli is on top of my list:



 **I have two torque wrenches.  One 20 to 200 Inch/Lbs.  The other is 10 to 150

 Foot/Lbs.

 Bought them from JC Whitney $22 for one and $24 (US) for the other.



 Leo Gates

 **

 These wrenches are still in the approximate price range, even though 

 the posting dates to July 31, 1998!

 http://www.jcwhitney.com



 QUESTION: the specs mention 1/4" and 1/2" drive (and some others 

 3/8").  Is that the size of the square "peg" where the socket inserts?



 Thanks in advance



 Carlos

 CH601-HD, plans

 Montreal, Canada



 *=================================



 *

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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milreed(at)wildblue.net
Guest

Posted: Wed Jul 25, 2007 12:22 pm Post subject: torque wrench

I find the HF 1/4 " drive air impact wrench very  useful, small, light, and fast. Be careful not to over torque. Use adapters  for other sizes.

 Mil    

    [quote][b]

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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ashontz

Joined: 27 Dec 2006
Posts: 723

Posted: Wed Jul 25, 2007 1:20 pm Post subject: Re: torque wrench

[quote="milreed(at)wildblue.net"]I find the HF 1/4 " drive air impact wrench very  useful, small, light, and fast. Be careful not to over torque. Use adapters  for other sizes.

 Mil    

     	  Quote: 	
		  [b] 	




I hope you don't use that as a torque wrench. A torque wrench is intended to torque a nut (or bolt) down to a specific torque value, not just "hey that's purdy tight."

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rduns(at)sasktel.net
Guest

Posted: Wed Jul 25, 2007 9:08 pm Post subject: torque wrench

I appreciated the info on toque wrenches because I am learning to use these 

on my corvair conversion.  In his video,

WW recommends use of the plain bar type torque wrench rather than the cheap 

dial type imports which he claims are not consistently accurate.  He 

suggested the one sold by Sears. I purchased a Sears 3/8" ft/lbs for about 

$20.00 but could not find a Sears torque wrench in in/lbs.  I was glad to 

see the one on this that is available from  J.C. Whitney.



Bob D.

6012HD/Corvair

Melfort, SK

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