[rebel-builders] Torque wrench

[Dick Wampach]

There are a lot of sources. Automotive, Aviation, Snap-on, Proto, Mac,
Craftsman, etc. What do you want to torque?

I have a Snap-on 0" to 200"/lb clicker type with the quarter inch drive that
I use for most of my work (A/P, IA, Titan Rocket engine builder) prior to
retirement.
I also have a Proto 100" - 1500"/lb 3/8" drive clicker that I use for the
higher values. These meet most of my needs.
I also have some much bigger and much smaller ones for specialty
requirements. On a Slick magneto the "P" lead is about 20"/lb you will
brake the ceramic insulator of the capacitor if you do it by hand to what
you feel is tight. On some Rocket engine components I have applied 600
foot/lb to the mounts.

Another type of Tq Wrench is the bending arm with a pointer, or a Dial. Now
days I believe they make digital versions.

When a torque of drag plus specific torque is called out, I always used a
dial to get the drag of each nut, then add that amount and continue to the
called out value + drag.

Calibration: At the Rocket factory we had purchased about 25 new wrenches
at one time, we sent them to our cal. Lab., 5 of them were rejected as
outside of our 5% requirement. Another tid-bit, we did not use a tq wr in
the bottom 20% of it's range, so if it was a 200"/lb we did not use it at
less than 40"/lb. I believe that is a good policy myself, because most were
not accurate in that range when we did our required daily tests. Yes this
may have been over kill but in several hundred pay-load launches our engines
never caused a failure to place a satellite in proper orbit.

SO be aware, not all torque wrenches are calibrated equal. Another thing if
one is dropped!!! God forbid the Dog knocked it on the hard cement
floor...It SHOULDE BE re-checked.
The FAA wants to have you have them calibrated each 2 years. Of course we
are building Experimental Airplanes so if a wrench is out of calibration it
shouldn't matter...right.

At a big shop that, I once operated the single engine department, WELL the
multi eng guys installed a prop on a 421C and pulled 2 of the studs out of a
prop before the mechanic questioned if it was a bad prop, or his torque
wrench. Needless to say ALL torque wrenches, company and personal, went out
for calibration. About 20% needed repair or retirement. We also added a
torque meter for daily checks.


Dick Wampach SR-108 N331RW



-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Kelly
M. Ewing
Sent: Thursday, August 05, 2010 11:49 AM
Subject: [rebel-builders] Torque wrench


Good afternoon all, anyone know where to get a decent torque wrench? I know
spruce has them, just want another source.

Thanks
Kelly ( Moose )
Canada
kelly@tru-form.ca




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[Ken]

Princess auto carries 1/4", 3/8", and 1/2" drive torque wrenches. The
1/4" one is fine for everything on the airframe except the engine. They
do mail order and have a website if you aren't close to a store.
Occasionally they go on sale. Probably not the most accurate things but
mine was fine when I checked the calibration.
Ken

Kelly M. Ewing wrote:

Good afternoon all, anyone know where to get a decent torque wrench? I know spruce has them, just want another source.

Thanks
Kelly ( Moose )
Canada
kelly@tru-form.ca
Enjoy your day !

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[Andrew Burr]

I have a Snapon that I have been using for 25 years now. Not the cheapest but it is the best.

Andrew E Burr XIV

Vertical performance LLc

Po Box 213

Cassville MO 65625



VPHelo, LLc has paid for the design and engineering for every component and holds ownership of all intellectual property for each component.

--- On Fri, 8/6/10, Ken <klehman@albedo.net> wrote:

From: Ken <klehman@albedo.net>
Subject: Re: [rebel-builders] Torque wrench
To: rebel-builders@dcsol.com
Date: Friday, August 6, 2010, 12:15 AM

Princess auto carries 1/4", 3/8", and 1/2" drive torque wrenches. The
1/4" one is fine for everything on the airframe except the engine. They
do mail order and have a website if you aren't close to a store.
Occasionally they go on sale. Probably not the most accurate things but
mine was fine when I checked the calibration.
Ken

Kelly M. Ewing wrote:
[quote]Good afternoon all, anyone know where to get a decent torque wrench? I know spruce has them, just want another source.

Thanks
Kelly ( Moose )
Canada
kelly@tru-form.ca
Enjoy your day !

[J Portman]

I am a real Craftsman fan. Free replacement for life. I've got several
different TW's around the hangar, but the important jobs get the Craftsman.

Had it checked once after I got it, then once every couple years.

JP



On Thu, 5 Aug 2010 20:30:02 -0700 (PDT), Andrew Burr wrote

I have a Snapon that I have been using for 25 years now. Not the
cheapest but it is the best.

Andrew E Burr XIV

Vertical performance LLc

Po Box 213

Cassville MO 65625

VPHelo, LLc has paid for the design and engineering for every
component and holds ownership of all intellectual property for each component.

--- On Fri, 8/6/10, Ken <klehman@albedo.net> wrote:

From: Ken <klehman@albedo.net>
Subject: Re: [rebel-builders] Torque wrench
To: rebel-builders@dcsol.com
Date: Friday, August 6, 2010, 12:15 AM

Princess auto carries 1/4", 3/8", and 1/2" drive torque wrenches.
The 1/4" one is fine for everything on the airframe except the
engine. They do mail order and have a website if you aren't close to
a store. Occasionally they go on sale. Probably not the most
accurate things but mine was fine when I checked the calibration. Ken

Kelly M. Ewing wrote:

Good afternoon all, anyone know where to get a decent torque wrench? I

know spruce has them, just want another source.

Thanks
Kelly ( Moose )
Canada
kelly@tru-form.ca
Enjoy your day !

[Miller, Ross W]

Same here on the Craftsman.

RM
203SR

----- Original Message -----
From: mike.davis@dcsol.com <mike.davis@dcsol.com>
To: rebel-builders@dcsol.com <rebel-builders@dcsol.com>
Sent: Thu Aug 05 23:42:46 2010
Subject: Re: [rebel-builders] Torque wrench

I am a real Craftsman fan. Free replacement for life. I've got several
different TW's around the hangar, but the important jobs get the Craftsman.

Had it checked once after I got it, then once every couple years.

JP



On Thu, 5 Aug 2010 20:30:02 -0700 (PDT), Andrew Burr wrote

I have a Snapon that I have been using for 25 years now. Not the
cheapest but it is the best.

Andrew E Burr XIV

Vertical performance LLc

Po Box 213

Cassville MO 65625

VPHelo, LLc has paid for the design and engineering for every
component and holds ownership of all intellectual property for each component.

--- On Fri, 8/6/10, Ken <klehman@albedo.net> wrote:

From: Ken <klehman@albedo.net>
Subject: Re: [rebel-builders] Torque wrench
To: rebel-builders@dcsol.com
Date: Friday, August 6, 2010, 12:15 AM

Princess auto carries 1/4", 3/8", and 1/2" drive torque wrenches.
The 1/4" one is fine for everything on the airframe except the
engine. They do mail order and have a website if you aren't close to
a store. Occasionally they go on sale. Probably not the most
accurate things but mine was fine when I checked the calibration. Ken

Kelly M. Ewing wrote:

Good afternoon all, anyone know where to get a decent torque wrench? I

know spruce has them, just want another source.

Thanks
Kelly ( Moose )
Canada
kelly@tru-form.ca
Enjoy your day !
     

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