Torque Wrenches

[Robert Mangas]

  My beam-type has a teeter-totter handle, but my clickers are just steel 
tubes.  I'm not accepting these statements that the length of the handle has 
an effect on the measured torque with a clicker.  I'd guess that the 
restrictions on handle extensions were to prevent an overzealous user from 
going to far and killing the elves.  On the larger of the two clickers (24" 
or so) the handgrip area is knurled and maybe 6" long.  If I grab that at 
the extreme outer edge is the torque applied at 'click' different than if I 
grabbed it at the extreme inner edge?  If so, that's a crappy design for 
what is purportedly a 'precision' tool.  (Precision is in quotes 'cause I 
got it for $10 on sale at Harbor Freight ;) ).

Robert

>From: Todd Young <auditodd at comcast.net>
>To: Alan Pritchard <apritchard at seaeye.com>
>CC: Q-List <quattro at audifans.com>
>Subject: Re: Torque Wrenches
>Date: Tue, 02 Dec 2003 10:32:23 -0600
>
>As I understand it, the handle on the clicker type wrenches has a pivot 
>point built in to it so that you apply force at a specific point on the 
>wrench to get "true" torque.
>
>I'm going strictly off what I have read in manuals for the clicker type 
>wrenches, and as someone else has pointed out the manuals for the clicker 
>type state NOT to use any type of extension.
>
>Plus, a handle extension wouldn't help anyway. You can't apply torque 
>beyond what's set on the clicker type, since it "clicks" once the set 
>torque is reached. For example, if you set it for 100lb-ft it will "click" 
>once that torque is reached, there's no way to accurately go to 120lb-ft 
>with an extension if the wrench is set to 100lb-ft.
>
>Alan Pritchard wrote:
>>
>>im afraid im having great difficulty with that concept. After all, torque 
>>is
>>a force about an axis at a given distance. As long as you are rotating 
>>that
>>wrench about the axis of the square drive the mechanism will always react 
>>at
>>the same point.
>>
>>  -----Original Message-----
>>From: 	Todd Young [mailto:auditodd at comcast.net] Sent:	02 December 2003 
>>16:07
>>To:	Alan Pritchard
>>Cc:	Q-List
>>Subject:	Re: Torque Wrenches
>>
>>Not true for the "clicker" type torque wrenches. You MUST apply force ONLY 
>>on the handle of the wrench. Applying torque any other place or with a 
>>handle "extension" will NOT give you the proper torque.
>>
>>Alan Pritchard wrote:
>>
>>>Untrue, the style of torque wrench, where you dial in a torque and it
>>clicks
>>>once that point is reached, will always click at the same torque,
>>>independent of lever length.
>>
>>
>
>--
>Todd Young
>7079 Dawn Ave. E.
>Inver Grove Heights, MN 55076
>
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>quattro at audifans.com
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