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Re: Europa-List: prop bolts

Subject: Re: Europa-List: prop bolts
From: Sidsel & Svein Johnsen <sidsel.svein@oslo.online.no>
Date: Tue, 12 Sep 2006 17:52:03

Paul:  Glad to be of help.

All:  If for some reason you should find the 90 degree orientation awkward 
for some application, where the spanner and wrench in straight line would be 
better, here's the equation to use for setting the adjusted torque limit on 
the wrench if you do not have a table for your wrench:

Twa = T x Lw / (Lw + Ls)

where
Twa = adjusted torque wrench setting
T = specified torque for the bolt
Lw = length of the torque wrench (from center of connection to the spanner 
to the middle of the grip of your hand)
Ls = length of spanner (from center of bolt to center of connection to 
wrench)

Examples:  Wrench and spanner of equal length then set wrench to 1/2 of the 
specified torque.
                  Wrench twice the length of the spanner then set wrench to 
2/3 of the specified torque.

Again:  Direction of your pull vs. wrench is not an issue (need not be 90 
degr.), but the spanner and the wrench must be aligned.  Somewhat sensitive 
to where your grip is on the handle, but if you mark with tape or felt pen 
and measure to the middle you should be all right for the applications in 
question.

Best regards,
Svein

----- Original Message ----- 
From: "Paul Stewart" <europa@pstewart.f2s.com>
Sent: Tuesday, September 12, 2006 10:04 AM
Subject: Re: Europa-List: prop bolts


>
> Svein
>
>
> Many thanks for your solution - torqued up the airmaster last night  no 
> problem at all. Even did a bench test with and without the  spanner  just 
> to get the 90 degree pull correct.
>
> Regards
>
> Paul
> G-GIDY 



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