As a noob hobby machinist, I needed to do some research on gearing and ran across the following sites that
helped me and I thought might be of interest to others
http://geargenerator.com/#200,200,1...,1,12,1,12,20,-60,2,0,60,5,12,20,0,0,0,2,-563
http://507movements.com/index01.html
http://www.amazon.com/Gears-Cutting..._14_img_2?ie=UTF8&refRID=10CVJ0PK3MSKCJEFSWCQ
There is also a rather expensive, professional reference - that seems a bit out of the typical hobby budget, but also seems to be pretty much the definitive reference
http://www.amazon.com/Dudleys-Handbook-Practical-Manufacture-Edition/dp/1439866015
Cheers
helped me and I thought might be of interest to others
http://geargenerator.com/#200,200,1...,1,12,1,12,20,-60,2,0,60,5,12,20,0,0,0,2,-563
http://507movements.com/index01.html
http://www.amazon.com/Gears-Cutting..._14_img_2?ie=UTF8&refRID=10CVJ0PK3MSKCJEFSWCQ
There is also a rather expensive, professional reference - that seems a bit out of the typical hobby budget, but also seems to be pretty much the definitive reference
http://www.amazon.com/Dudleys-Handbook-Practical-Manufacture-Edition/dp/1439866015
Cheers