An integrated drive generator comprising: an input shaft to be driven by a gas turbine engine; a gear differential including a carrier shaft connected to said input shaft and including a ring gear (40,46) connected to a generator; an accessory drive gear; an intermediate gear; a governor drive gear; said ring gear also connected to the accessory drive gear, said accessory drive gear connected to the intermediate gear, characterized in that outer gear teeth of the governor drive gear engaged to said intermediate gear and said governor drive gear connected to a governor; wherein the governor drive gear comprises: a gear body extending between a first end and a second end and having a disc extending radially outwardly, and a boss extending from said disc toward said second end, there being said outer gear teeth outwardly of an outer diameter of said disc, said outer gear teeth having a gear tooth profile with roll angles A, B, C, and D, wherein the roll angle at A for said outer gear teeth being between 20.9 and 22.4 degrees, the roll angle at B for said outer gear teeth being between 22.8 and 24.3 degrees, the roll angle at C for said outer gear teeth being between 28.4 and 29.9 degrees, and the roll angle at D for said outer gear teeth being between 30.2 and 31.7 degrees; wherein said outer gear teeth have a pitch diameter of 7.62 centimeters (3.00 inches) with a tolerance of +/-.025 centimeters (.01 inch), and wherein there are 60 of said outer gear teeth, and wherein said outer gear teeth have a maximum form diameter, FD, of 7.39 centimeters (2.91 inches) with a tolerance of +/-.025 centimeters (.01 inch), wherein the roll angle at A is applied at the form diameter, FD, the roll angle at B is 20 percent away from roll angle A and between roll angle A and roll angle D, roll angle C is 80 percent away from roll angle A and between roll angle A and roll angle D, and the roll angle D is at the outer diameter of the gear tooth. an input shaft to be driven by a gas turbine engine; a gear differential including a carrier shaft connected to said input shaft and including a ring gear (40,46) connected to a generator; an accessory drive gear; an intermediate gear; a governor drive gear; said ring gear also connected to the accessory drive gear, said accessory drive gear connected to the intermediate gear, characterized in that outer gear teeth of the governor drive gear engaged to said intermediate gear and said governor drive gear connected to a governor; wherein the governor drive gear comprises: a gear body extending between a first end and a second end and having a disc extending radially outwardly, and a boss extending from said disc toward said second end, there being said outer gear teeth outwardly of an outer diameter of said disc, said outer gear teeth having a gear tooth profile with roll angles A, B, C, and D, wherein the roll angle at A for said outer gear teeth being between 20.9 and 22.4 degrees, the roll angle at B for said outer gear teeth being between 22.8 and 24.3 degrees, the roll angle at C for said outer gear teeth being between 28.4 and 29.9 degrees, and the roll angle at D for said outer gear teeth being between 30.2 and 31.7 degrees; wherein said outer gear teeth have a pitch diameter of 7.62 centimeters (3.00 inches) with a tolerance of +/-.025 centimeters (.01 inch), and wherein there are 60 of said outer gear teeth, and wherein said outer gear teeth have a maximum form diameter, FD, of 7.39 centimeters (2.91 inches) with a tolerance of +/-.025 centimeters (.01 inch), wherein the roll angle at A is applied at the form diameter, FD, the roll angle at B is 20 percent away from roll angle A and between roll angle A and roll angle D, roll angle C is 80 percent away from roll angle A and between roll angle A and roll angle D, and the roll angle D is at the outer diameter of the gear tooth. a gear body extending between a first end and a second end and having a disc extending radially outwardly, and a boss extending from said disc toward said second end, there being said outer gear teeth outwardly of an outer diameter of said disc, said outer gear teeth having a gear tooth profile with roll angles A, B, C, and D, wherein the roll angle at A for said outer gear teeth being between 20.9 and 22.4 degrees, the roll angle at B for said outer gear teeth being between 22.8 and 24.3 degrees, the roll angle at C for said outer gear teeth being between 28.4 and 29.9 degrees, and the roll angle at D for said outer gear teeth being between 30.2 and 31.7 degrees; wherein said outer gear teeth have a pitch diameter of 7.62 centimeters (3.00 inches) with a tolerance of +/-.025 centimeters (.01 inch), and wherein there are 60 of said outer gear teeth, and wherein said outer gear teeth have a maximum form diameter, FD, of 7.39 centimeters (2.91 inches) with a tolerance of +/-.025 centimeters (.01 inch), wherein the roll angle at A is applied at the form diameter, FD, the roll angle at B is 20 percent away from roll angle A and between roll angle A and roll angle D, roll angle C is 80 percent away from roll angle A and between roll angle A and roll angle D, and the roll angle D is at the outer diameter of the gear tooth.