Great Topic! I actually did 1000 Miles of the TAT, OK.N.M. & CO. on a fairly stock TW last summer. Yes, had the Clarke tank, 2 Sigg Bottles of extra fuel, that I never needed. Farthest between gas for this trip for me was 128 miles. 47T rear sprocket, OEM rear rack, and carried all my camping gear. Stock jet's and all. Cinnamon Pass and Engineer Pass were fun! (I broke this bike in on Pikes Peak the summer before) Was great seeing all on a slow bike. No problems. Did ride some slab back to OK. a bit Buzzy of course at 60mph. (CO.Hwy.160)
So Eric, have you bought the Sections of Maps from Sam that you want to ride? I had a GPS, never used it. had the roll charts, checked them against the maps and took those with me. Would like to do more of it this Summer. Oh yea, I'm 56 and Retired, so no time constraints.
Need any info on camping gear or whatever, Ask. You can do any of the TAT and then do any of it you don't, side trips, etc. Just have fun.