I'm wanting to calculate the gear ratios for a bike my dad gave me as a gift but I can't find it listed anywhere, nevermind being able to find a manual. Based on the stickers it's a Performance Cross X100 and, from what my dad has told me, it was made sometime prior to 1999. However, after multiple searches I have only found that the first X model Performance made was the X103 for the year 1993 and no X100 model is listed.
And no, I don't want to count gear teeth by hand