Donate!
Welcome, Guest. Please Login or Register :: View Members
Pages: 1
Send Topic Print
Cheap Torque wrench (Read 366 times)
vtail
Senior Member
****
Offline

life's short, ride
fast

Posts: 408
Portland,OR
Gender: male
Cheap Torque wrench
07/05/07 at 17:00:33
 
Yes ,yes I have 2 torque wrenches, On in ft/lbs and one in inch/lbs. But many times they do not fit in the limited space available. Solution;  At any good hardware store get a old fashioned hook scale. Put boxwrench (preferred) on the nut (bolt) and hook the scale onto the other end of the boxwrench. Just pull at 90 degree angle to boxwrench for proper torque. Example; Nut needs to be torqued till 25 ft/lbs= 300 inch/lbs (25x12). If box wrench is 8 inches long from center to center, devide 300 thru 8 = 37.5 lbs of pull at 90 degree angle to wrench for proper Torque. Great,inexpensive and works in tight spots like oil drain plug, cylinder head cover nuts etc Shocked
Back to top
 
 

'07, White spacer REMOVED, 152,5 main jet, K&N drop-in filter, Mac exh, Sigma 906, ENM PT15B2 tach, factory s bags, shield, backrest/lug rack, crashbar, Kuryakyn 7980 ext hwy pegs,412-4233C+'09 C50T
  IP Logged
Paladin.
Serious Thumper
*****
Offline

Hamster

Posts: 4929
Sunny Southern California
Gender: male
Re: Cheap Torque wrench
Reply #1 - 07/05/07 at 18:55:20
 
If not the hardware store try sporting/fishing goods -- the scale used to check the weight of a fish should be under $15.  Many here will already have one.
Back to top
 
 
WWW   IP Logged
Todd Perry
YaBB Newbies
*
Offline

Straighten up and
fly right....

Posts: 28
Orlando, FL
Gender: male
Re: Cheap Torque wrench
Reply #2 - 06/21/08 at 10:22:46
 
Good idea, and I've used it myself. However, keep in mind that you need to stay reasonably close to the 90 degree angle as you can through the arc if the wrench turns (i.e. don't pull in a straight line, pull keeping the scale perpendicular to the wrench.) As you deviate from a straight line, the effective torque drops off (with the sine of the angle, in case you're a geek like me.) So, at 90 degrees, you get full torque, and it's not bad until about 65 degrees (90%), but drops off pretty quickly (45 degrees = 70% and so on) This is usually a problem at lower (i.e. inch-pound) strength torques as many times the tolerances are tighter and you may not get enough torque. At serious foot-pound settings, you usually can't make much of a difference  Cheesy
Back to top
 
 

Which way to the BBQ joint?
  IP Logged
northshore_paul
Junior Member
**
Offline

Keep it
simple....less to
break!

Posts: 68
South Louisiana
Gender: male
Re: Cheap Torque wrench
Reply #3 - 06/22/08 at 16:42:13
 
I have purchased the harbor freight 1/2" drive wrench for less than $20 on sale...I know you ask how accurate is it...well now that you ask it is within 5% from 10lbs to 100 ft lbs. When the calibration van came to work I asked them to do a check and I was pleasantly surprised. Also had them check my Harbor freight voltmeter and it was spot on!
Back to top
 
 
  IP Logged
Digger
Serious Thumper
2005 No Login
*****
Offline

Ya gotta be tough to
ride singles!

Posts: 1604
Colorado Springs, CO
Gender: male
Re: Cheap Torque wrench
Reply #4 - 06/25/08 at 21:31:07
 
Here's another way to torque fasteners that are impossible to access with a plain torque wrench:

I've got lots of impromptu torque adapters I use while working on my bikes.  For instance, here are two that I've rigged up to torque the two 6mm nuts that are on the starboard side of the bottom of the cylinder assy.

This one uses a standard 10mm combination wrench.  The open end of the wrench fits perfectly on the drive square of my 3/8" torque wrench:




This one uses a 10mm crow's foot popped onto the drive square of my 3/8" drive torque wrench:



Just get an accurate measurment of the new perpendicular moment arm and do the math.  The offset angle of the 10mm wrench is small enough such that it can be neglected, by my calculations.

I keep the conversion factors in a book in my garage.  I currently have nine different torque adapters listed in that book.
Back to top
 
 

Digger
2001, Metallic Glacial Blue, Raptor Petcock, Verslavy (first hole) (otherwise, mechanically, the bike is stock), 13,xxx miles
I don't own a cage.
www.astronautbiker.com
WWW   IP Logged
Pages: 1
Send Topic Print


« Home

 
« Home
SuzukiSavage.com
11/04/24 at 03:15:33



General CategoryTechnical Documents/Reference › Cheap Torque wrench


SuzukiSavage.com » Powered by YaBB 2.2!
YaBB © 2000-2007. All Rights Reserved.