Machine Shop Mathmatics

Ted in NE-OH

Well-known Member
I have a right triangle, the base side is 1.13 in., The opposite side is .111 in. What is the acute angle. This is how I am figuring the angle (taper) for a steering wheel for an AC B tractor as I need to make a new steering wheel shaft.
 
Although I get along decently with math and geometry I have always struggled with that type of problem in the machine shop. I find it easier when duplicating a non critical taper such as a steering wheel shaft to chuck the old part and mount an indicator on the cross slide. Then adjust the taper attachment until the indicator says I am spot on. When making a part from print that has tight tolerances? I call the family math wiz,,,
 
If you can figure out the Trig { it is not that hard ]. You can make all kinds of parts. Kinsler Fuel Injection used to give out a card called "pocket Trig" . That little card helped me with a lot of math.
 

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