Quote:
Originally Posted by DonRotolo
Can you elaborate on your experience in the flight differences between a 175 disk and a 180 disk? Are they different sizes as well?
Also  emphasis mine) So these could weigh as little as 175 g |
I tossed one in school today, but didn't notice much of a difference - take that with a big grain of salt though.
There are a number of differences between the FIRST disc and a regulation Ultimate disc. Regulation discs are 10.75" wide, 1" thick, and as pointed out, 175g - which, obviously, is also a nominal figure. The more noticeable difference, however, is that the FIRST discs are made of a much more brittle and "hard" plastic, so to speak, and seem to have been produced with a different mass distribution (denser around the rim than the center, as opposed to the regulation disc).