My first engine the Kings 70 or 80 cc whatever it is was pushin 40 with the 36 tooth but that was on a heavy bike and it had brake issues (coaster) so I got over the need for speed and got into crusin and now have a 44 tooth on it and putt around at 20 to 25 mph all the time. She'll still do 30+ easily but I got over the need for speed . I'd much rather take in the sights and (enjoy the ride). Where have I heard that before ? ? ?It now runs the 65 cc from Dac's but not for long. I'm puttin the 70 back on and puttin the 65 on a Firestone bike I got at a yard sale for 10 bucks. Turns out its a 1965 so the 65 cc seemed like the right thing to do.The 65 cc runs good but the 70cc pulls hills much better. Also I run both with all the natural oil they can stand ( at least 16 to 1 ) and rarely go full tilt anymore. Now as for me I was pushin 40 a long time ago. October 27th was my 56th birthday 65-56 those two numbers seem to be comming up alot lately. Hope I make it to 65 myself........ VW..T..in WV
My Kings 70cc/ 44T, on max-inflated 26-inch street tires, with me hunkered down low and throttle wide open, clocks in at 37 mph at my nearby "Your speed" radar warning display before a sharp turn.
Coming from the other side of the turn is uphill at a pretty decent grade, with another radar warning, and I consistently clock 30mph UPHILL. I weigh 180, and my bike weighed 29 or 30 lbs before the motor.
Funny thing is, as long as I watch out for bumps, the bike/motor felt stable at the speed. At least till it busted the bike frame last night. The engine leaks quite a bit fuel from... somewhere... but runs strong.
I use 87 octane, which someone told me was less sensitive to humidity, and I put a little bit of isoHEET and Stabil in each tank.
Oh yeah... I took off the lower part of the muffler and drilled a hole in the bottom of the pipe to let the gases flow straight through. The sound bouncing of the pavement is probably 95dB and I have to wear earplugs, but I appreciate the fact that drivers can hear me comin. From WAY back. Sounds like a 2-stroke Harley.