Posted by Brian Dengel on November 20, 2000 at 14:56:52:

In Reply to: Re: Involute Gear Geometry Calculations posted by Brian Dengel on November 20, 2000 at 12:23:19:

The formula that I previously specified is for a straight tooth spur gear. If you are dealing with a helical gear then you need to modify the equation.

A sample calculation for the BASE CIRCLE can be found at
http://www.drgears.com/GearTerms/terms/bcd.htm.

- Re: Involute Gear Geometry Calculations - addendum
**Luis Dunne***03/14/02*(0)