Huge 10hp HTengine?

Discussion in '2-Stroke Engines' started by Bikeuser, Aug 18, 2008.

  1. Bikeuser

    Bikeuser Member

    Does anybody know the bore and stroke of a 80cc and 70cc engine?

  2. Bronzebird

    Bronzebird Member

    40mm bore x 38mm stroke = 48cm, 1.6HP@5,000rpm

    45mm bore x 40mm stroke= 60cm, 2HP@ 5,000 rpm

    47mm bore x 40mm stroke= 80cm, 3 HP@ 5,000 rpm

    Manual state 500Km for 16:1 break-in oil to fuel ratio (instruction manual states 200Km. I believe the life of the motor depends on oil quality and mild rpms at 15 mph with stock gearing.

    These motors are sold by Powerking on ebay or also known by nickname of happy times or HT.