tolerances question

[dweymer]

This is actually for a 944, but there is much more action over here, and is an interpretation of the specs in the manual. In the manual it lists runout, diameter, out of round etc. I am assuming these are in MM not inches. Is this correct? And, how do I convert to inches?

Specifically, the crank runout is listed as .04-.06 which I am pretty sure converts to
16/1000-24/1000, or 16-24 thousanths.

Can someone correct me on this?

[304065]

Donnie,

"She was 25.4 years old, she was beautiful." The guy from Griffiths taught me that and I always remember it.

Inches to mm is 25.4. All the specs are listed in millimeters. So crank runout is 0.0016, or sixteen ten-thousands to twenty-four ten-thousands. That is not easy to measure but it can be done.

If you don't have access to metric metrology equipment, OK, not a huge deal. Personally I don't think there is any difference in user-friendliness for Decimal-Inch vs. Metric, at least at the level of tool-room tolerances-- it's all powers of ten in either case.

[MBruns]

to convert mm to in.

multiply the metric value by .03937

divide by .03937 to go from in. to mm


4.0 mm x .03937 = .1579 in

.1579 in. / .03937 = 4.01

quick and easy
Mike Bruns

[Walt Fricke]

Even easier is to Google "metric converter" or some similar search words. There are plenty of free programs which will convert one unit into another. I have on on my desktop. I don't often convert furlongs into versts, so it has a lot of not very useful stuff. But it has all you want. Remembering 25.4 will get you there, but you have to haul out your calculator.

Just do it with a click and some typing of numbers on your desktop.

Here is the one I've used for years called "convert.exe":

Convert for Windows | Josh Madison