Gear Center to Center question (and discrepancy)

[R.C.]

Originally Posted by DampRobot

Could you be measuring point to point or shortest distance instead of center to center in SW? Sometimes SW decides to switch the measuring tool to closest or point to point measurements randomly, when what us FRC folk want 99% of the time is center to center (for holes, etc).

The nominal value for the 40-44 20 DP gearset is 2.1000". Whether or not you add in the .002" adder depends where you're using the gears in your design, and the quality of the gears.

Totally agree with Roger, Solidworks sometimes gets funky on the measure tool. But just verified real quick:

http://puu.sh/90hqe/ecce375103.jpg

and

http://content.vexrobotics.com/vexpr...g-20130104.pdf
http://content.vexrobotics.com/vexpr...g-20130104.pdf

Let me know if you have any other questions

[TheHolyHades1]

Thanks everyone for the speedy replies. I must have just been doing something wrong with SolidWorks then.

Now that I know that the WCP calculator is correct (not that there should've been much doubt, I suppose), I've created this spreadsheet with values for the center to center distances with various gears sold by WCP/VexPro: http://www.chiefdelphi.com/media/papers/3036

Thanks again!