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scott1977
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Join Date: Aug 2008
Posts: 9

Torque

09/26/2008 6:37 AM

Can anyone help me: I currently have a test rig and I am trying to measure the torque on the crankshaft. I am looking to purchase a Transducer to fit inline between couplings. The problem I have is the Tools Steel shaft I have is hollow and I do not know the inside diameter. Without this I am only going to have an estimated torque value - strain accuracy would be accurate - ?

Can anyone advise as to my best course of action?

Many Thanks
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standarded
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United States - Member - Member Hobbies - DIY Welding - New Member

Join Date: Mar 2008
Location: Southeast US of A
Posts: 555
Good Answers: 50
#1

Re: Torque

09/26/2008 11:39 PM

Can you give us a better explanation of what type of setup you are running; what are you testing?

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Chazl
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Join Date: Nov 2007
Posts: 85
Good Answers: 4
#2

Re: Torque

09/27/2008 2:48 AM

how about a Dynomometer?
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dadw5boys
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Join Date: Feb 2006
Location: Piney Flats, Tennessee
Posts: 1740
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#3

Re: Torque

09/27/2008 3:10 AM

A local machine shop should be albe to measure it for you.

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awelch
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Join Date: Sep 2008
Location: Vancouver, BC
Posts: 68
Good Answers: 4
#4

Re: Torque

09/27/2008 7:09 PM

I am not sure about your exact question, but it sounds like you want to measure torque from an engine crankshaft or perhaps an electric motor.

If you use a calibrated inline torque meter, the exact dimensions of the crankshaft, couplings or mating parts are not required in calculating torque. The inline torque meter transmits torque from one end to the other and is pre-calibrated at the facory. Seconday checks (with a torque arm/ calibrated weight set) during maintenance intervals assure accuracy. You may want to check this company's site: http://www.himmelstein.com/ .
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unclefastguy
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Location: In a mushroom field somewhere in Canada. Kept in the dark and fed sh--, well you know.
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#5

Re: Torque

09/29/2008 9:13 AM

Place a strain gauge on area of crankshaft that you are most worried about failing.

www.omega.ca good source for reasonably priced strain gauges and readouts.

Calculate torque from stress/strain values obtained.

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rakesh_semwal
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India - Member - New Member Engineering Fields - Electromechanical Engineering - New Member

Join Date: Oct 2006
Location: India, 200 Km. North of Delhi.
Posts: 1393
Good Answers: 53
#6

Re: Torque

09/30/2008 12:37 PM

Why don't you use a simple rope pulley and weight method?
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scott1977
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Join Date: Aug 2008
Posts: 9
#7

Re: Torque

09/30/2008 2:20 PM

thanks for all your input fellas, I think i have it nailed now.
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Users who posted comments:

awelch (1); Chazl (1); dadw5boys (1); rakesh_semwal (1); scott1977 (1); standarded (1); unclefastguy (1)

Previous in Forum: II have about junction box and the nema 4x question   Next in Forum: Wiring Diagram
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