I got some questions to ask. Here is the break down, I am 275'ish lbs, 6'4" tall got a Specialized mountain bike with some nice wide tires on it, 2.6's I believe. My riding style is mostly road and paved/hard-packed bike path, some single track. The current issue is, I got a long gentle sloping hill that I ride everyday. Its just a long steady uphill climb everynight, I do not go crazy, just steady pedalling, takes me 20-25 minutes. As per usual I am tempted to go big or go home, but I never bought no gassie before. So I read the break-down on 2 stroke and 4 stroke. Learned that the Grubee 2 strokes are the ones to buy for 2 stroke (probably the "80cc" which is the 65cc. The 4 strokes are Honda or Subaru. I do not want to wrench on the motor all the time, I would prefer a quieter engine and of course I prefer more reliability. I believe the 4 stroke is the answer for me. Would the Honda GHX50 cc have enough power for a dude like me, I guess it would totally for the gradual grades. And I could gear it appropriately. Should I be more looking at the GX100 or the 118 or 121cc. Its only a 0.7HP (1.8N-m) difference, the size is similar along with the weight. I would like to know the name or term for the belt drive system where the belt goes from shaft, to something mounted on the spokes. I cant tell if this is an addition to the wheel or sold like that. Its hard to explain without a picture, but its mounted on like the one side spokes, and its like 4 inches from the place where V brakes contact. I have this idea in my mind, tell me if this is crazy or not. I would prefer my engine rear rack mounted, slightly backwards so I have room to "squat" on my rack for steep downhills, sometimes I get the urge for a quick short steep downhill, like sidewalk to road, or shortcutting. Now quietness is crucial for me, I know stealth is unlikely, unless electric. Now if I enclose the engine, with air scoops maybe even a DC powered fan. Make it look like some odd mounted pannier bags. This idea has some merritt I do believe. Mounting a geared hub via chain, from shaft, to hub. Then 2nd chain hub to wheel. Would have like 8 speeds to choose from.