Originally Posted by Buckaroo

"Teach a man to fish....."

48 pitch # of teeth / 1.5 * 2 = 64 pitch # of teeth

64 pitch # of teeth / 2 * 1.5 = 48 pitch # of teeth

Example: 48p 87 tooth spur / 1.5 = 58 * 2 = 116 64 pitch