A pair of helical gears is to be cut for parallel shafts whose center distance is to be about 3.5 in to give a velocity ratio of approximately 1.8. The gears are to be cut with a standard 20◦ pressure angle hob whose diametral pitch is 8 teeth/in. Using a helix angle of 30◦, determine the transverse values of the diametral and circular pitches and the tooth numbers, pitch radii, and center distance.