If you are talking about water, the answer is 50. But if you are talking about air or murcury, it would be different. This is because cc (cubic centimeter) measures volume, while milligrams measure mass. So the more dense the substance, the less volume it would take to be 50 mg.
50 and below. Anything over 50 you must have the motorcycle endorsement.
1000mg
there are 1,000,000 milligrams in a kilogram
320 miligrams
1 gram are 1000 miligrams.
There are approximately 384 cubic centimeters (ccs) in 13 ounces.
This happens to be about 2 grams.2g
10 milligrams in 1 centigram.
1.5 g = 1500 mg
Miligrams are 1000 times smaller than grams. So to make 2,000 grams you need 2,000,000 miligrams.
According to S&S a 234" motor is equivalent to 2030 CCs.
480