Re: Typical top speed......
My top speed on my OCC with a HT was 32 mph, it was a PK80 without mods, and I think I was running against redline, not drag due to the characteristics of how it ran at top speed, plus the 44t on the 22" rear tire diameter. Some guys have maneaged 50+ mph on a HT but have done almost every possible power modification. I've strayed away from 66cc HT's but one thing I do miss is the good torque that the displacement at a low compression provides, and hill climbing ability of the motors when pedal asssisted to keep the fire lit.
KTM50 Schwinn Chopper - 6000W E-Motard - 52cc Auger BMX - 9sp+CVT 52cc Cagllari Moped