Well, I get idea that quite a few members of this forum are oldsters, reliving their youth. That's me. I built a HT on an 80's Schwinn Comfort cruiser that I had and it works pretty well. Although I have replaced so many parts that the LBS is tired of seeing me walk in. I plan to build another bike (like everyone else) and I am leaning toward a GEBE. The friction bikes seem simple and efficient, but my concern is a large number of flats on long rides due to the friction on the tire. The story of the trip to Mammoth Mountain by Backaximuth made me think that might have been his problem. Anyway, Hello, and what's your feeling on heat affecting the durability of the rear tire?