My vintage motobecane wieghs 27 pounds, and cost ten bucks, plus some new tires in 1990. Now it might be more, since vintage roadbikes are becoming collectable. Bike weight matters, but even a fairly heavy one like the motobecane can be fast if the tires have good rolling resistance. The sub $100 roadbike will be slow compared to a light bike, but carbon frames start at $600 and go up from there. A vintage aluminum frame roadbike would be a good place in the middle of the price range. Garage sales and flea markets are the place. Look for a frame that won't let a magnet stick to it.
Getting fit took me one summer, but I was 14 at the time. A summer in Santa Fe with no TV did it. I was riding to the Ski area daily, and went from a pud to a stud in 3 months. Back at school, people went WTF! have you been doing.
Now, at 50, I can still hit 30 mph on the motobecane, for about 10 seconds. :lol: :lol: Sustained riding, 15 mph for about 3 miles, or till I puke. I don't know your age, Morph, but under 30 you can make it to 20-25 mph under pedal power if you try, above 40, it'll take a lot more trying.
Liveforphysics, you're evil! I've had similar fun, just with my weak 25 mph bike. I got passed one day by a fit but older roadie. I was riding into a good 20 mph headwind, and going about 12 mph on a test of maximum range on my battery. The roadie, eyeing my wallbike FS mtb, with panniers all over, gives me the yer an idiot look. Riding through rolling hills, I let him get ahead of me on each climb, and as soon as he dropped out of sight, hit full throttle. When I topped the hill, I'd be right behind him again. He'd kick a bit harder up the next hill, and I'd be right there again, but never going fast when he could see me. It was evil mean but fun, you could tell he was determined to leave me in the dust, but somehow, there I still was, five miles later, not 1/4 mile behind him on my f---ing wallbike while he's riding $3000 of carbon. Poor shmuck never knew how I was doing it.