Re: How fast will a beach cruiser with 49cc 4 stroke motor go with a 155ib user on it
My eyes aren't what they used to be so I missed the "4 stroke" reference. However it doesn't change my original answer except to ignor my comment about "fuel/oil mix". The other factors remain the same...sorry for the oversight.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"