i forgot to mention that i wear earplugs everwhere i ride. seems to make the noise more tolerable. i feel a difference on top end power depending on weither im running ethanol or 100% gas. 100% gas seems to have more power.
i have read in other threads that these bikes are under powered for their build and can be run wot without damage.
Yes, TWs are very mildly tuned for there construction. The basic architecture will live at ~double the TW's stock power output. Over that, they become grenades. The consequence of such a mild state of tune is a very wide powerband.
A taller sprocket ratio really won't make much difference in top speed EXCEPT when riding down a long, steep hill, of which there are several around Chattanooga. Monteagle is a white knuckler for truckers and RVers. Tall enough ratios to make a real difference will likely be problematic with excessive spread between 3-4 and 4-5 gears resulting in upshiftting causing the engine to fall too far off the torque peak, necessitating constant downshifting and slower speeds uphill.
An assortment of vehicles moving together at speed will carry along a plug of air and can make a big difference in top speed, as much as 8-10mph at times. TDub's been tooling along WOT at, say, 65mph, a clump of cages passes, she gets swept up in the draft, and next thing you know she's keeping up with the rest of traffic at 75mph.