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RVNewsletter
Class E
Joined: 29 Mar 2006
Posts: 249
Location (Optional): St. Paul, MN.
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 Posted: Tue May 27, 2008 2:00 pm Post subject: Stupid torque wrench questions |
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Yes, I know I'm embarrassing myself for even asking but I have to:
Is 7 foot pounds of torque equivalent to 84 inch pounds of torque?
I ask because -- if memory serves -- the nose gear bolt through the wheel is to be torqued to 7-10 foot pounds and I want to be sure I can use my inch-pound wrench for that.
Yes, I'm stupid. |
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prestwich
Class D
Joined: 20 May 2005
Posts: 267
Location (Optional): Santa Barbara
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| Posted: Tue May 27, 2008 2:21 pm Post subject: |
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| Yep. Arithmetic even applies to torque. |
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tmbg
Class D
Joined: 07 Feb 2007
Posts: 472
Location (Optional): Atlanta, GA (KRYY)
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| Posted: Tue May 27, 2008 3:23 pm Post subject: |
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it's not a stupid question! Not everything converts linearly like that, and it's not always obvious. In this case it works that way, because you're only converting the pounds to feet, but if you try to do something like lb/ft to oz/in, you gotta convert both terms. lb/ft = 16oz/12in, so you have to scale by 12/16 or 3/4.
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Ian
RV-7 SB Fuselage
N773WW reserved!
http://rv7.z-toys.com/ |
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RVNewsletter
Class E
Joined: 29 Mar 2006
Posts: 249
Location (Optional): St. Paul, MN.
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| Posted: Tue May 27, 2008 4:04 pm Post subject: |
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Thanks, everybody! That's a big help.
So the good news is that I don't have to buy (at least right now) a new torque wrench.
The bad news is I have one less excuse to get out of this post-long-weekend funk by sneaking out of work and going up to the (very good) Sears hardware store up the street.  |
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smittysrv
Class E
Joined: 03 Sep 2005
Posts: 222
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tmbg
Class D
Joined: 07 Feb 2007
Posts: 472
Location (Optional): Atlanta, GA (KRYY)
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| Posted: Tue May 27, 2008 4:24 pm Post subject: |
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depending on your level of tool obsession, you may want to skip the sears torque wrench. I've been lusting over a snapon digital torque wrench for a long while, but they're INSANELY expensive.
Well, turns out you can get them here: http://www.cditorque.com/main.html
CDI makes them for snap-on, they're the same wrenches with the same warranty, but different name stamped on it. They're less than half the price of the snap-on ones.
These torque wrenches are far nicer than the sears ones, and they're legal to use on airplanes (not that it matters for our stuff, but having nice tools is nice!)
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Ian
RV-7 SB Fuselage
N773WW reserved!
http://rv7.z-toys.com/ |
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Thermos
Class E
Joined: 06 Nov 2004
Posts: 217
Location (Optional): KBED
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| Posted: Wed May 28, 2008 11:07 am Post subject: Re: Stupid torque wrench questions |
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| RVNewsletter wrote: | Yes, I know I'm embarrassing myself for even asking but I have to: Is 7 foot pounds of torque equivalent to 84 inch pounds of torque?
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Don't be embarrassed Bob, I've asked A&Ps the same question. It's amazing how the things that seem obvious at first glance, often aren't.
Dave
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Dave Setser
Arlington, MA
RV-7 Fuselage
http://www.mightyrv.com |
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BrickPilot
Class E
Joined: 09 Apr 2007
Posts: 73
Location (Optional): Lehi, UT
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| Posted: Thu May 29, 2008 3:42 pm Post subject: |
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| tmbg wrote: | | depending on your level of tool obsession, you may want to skip the sears torque wrench. I've been lusting over a snapon digital torque wrench for a long while, but they're INSANELY expensive. |
I'd never even used a torque wrench before starting my kit, so I don't know what I missed, because I bought a SnapOn digital back when I was flush with tool funds.
I can't express in words how very freakin' cool this thing is! Set it and forget it. You don't have to look at the display while using it, 'cause it will beep at you as you get close to the set value, and then chirp as you get right on it. It's a thing of beauty and wonder!
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Jeff Klug
Bearhawk #1053 (QB #91)
Shop cam! |
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