I have an internal spur gear with (101 teeth, minor dia. 48.81889 in .. and pitch about 1.57 in) ... I cannot draw it in solidworks ... because diametral pitch 2 gives me minor dia. 49.488 in... any one can help
Did you try with GearTrax 2013 for Solidworks? If you know all the gear parameters, you sholud be able to create it.