Inseam is perhaps not the very most appropriate measurement. Another way to put it, it : how much seatpost extention (hear of saddle rail) will he need with a 20.8" seattube?
Inseam is measured by standing in the door opening (find one that fits you for prepore posture). Shove a book up your groin, and pencil mark how high it reaches. That's considered inseam. I have 995mm, just over 39", and 20.8" is pushing it with a 410mm seat post, it's actually over the max with 180mm cranks, FLite TT seat and Egg Beater Pedals. I could get a seat that's taller, or even longer cranks, but the latter is not the first choice plan with a Fisher frame.
In the year 2004, I cannot imagine agreeing a 6'8" is fitting his ANY stock bike correctly. For MTB, 630mm top tube should be the absolute dead minimum, 650mm closer to ideal. I say : most simple yet burly custom frame, 23" ST, 25.5" TT, 72/72º, basic parts, 36h strong rims, and your friend is go! If despite his 4" extra, he's got legs no longer than mine, than get him on that XL Fisher with long seatpost, and throw on a 120-130mm stem, you should be close to a perfect fit then.
Good luck!
J
Padre said:
thanks Cloxxi
Would you say, though, that the Fisher would be a much better selection than the Trek?
The 4300 has only a 24.0" top tube while the Fisher is 25.5".
Are there any other options?
Oh yes.. where can I go to get the proper way to measure inseam?
Thanks for your help.