can anyone confirm what frame/ fork geometry was changed when the '82 GT Pro came out. The large down tube frames felt different to the last of the small down tube frames. the head tube or the fork rake seemed slacker on the '81. also i suspect that the rear triangle of the '82 was shorter. I don't have any data. i bet someone will have data sheets for before and after. ( this question struck me as i was riding my '81 around my office today )

this is a repost from the another forum. so i wasn't riding around the office today.

however, i am sitll without any info. can someone help