Hehe, I guess I'm just expecting too much of it then, I used to run a HT engine, but stopped due to high maintenance, boy did that thing take off...
Do you pedal? lol
If you are just sitting on your bike and pulling the trigger it is going to
be pretty slow......
I am not your typical motorized bike rider and I know lots of them from
local rides and my race. I beat all of them through the intersection from
a stop and half way down the block because I pedal.
I like to pedal hard. I love the exercise and I use a 7 speed beach
cruiser that I leave in 6th gear on my 35cc Robin Subaru FD.
I have wide motorcross bars and a set back seat post that allows
for hard pedal action even standing up.
The first few stokes are a little hard but I gas the motor from the start
and the straight bars allow for a lot of down force.
I loosen up bottom bearings and bend set back seat posts. I have to
reinforce the posts with a piece of 7/8" water pipe driven inside the thin
tubing.
I get up off the seat and crank the pedals while gassing it off every
stop. I normally sit down at about 22 mph which is why the posts bend
and keep pedaling until I hit about 25 mph which is a minimum cruising
speed.
With my set up in 6th gear i can increase the speed to about 27 to 28 mph
by pedaling.
Bike goes about 28 to 29 mph as long as there isn't a head wind. Will hit
30 mph with a tail wind.
I have never cruised at under 21 mph in over 3000 miles and the only
reason to go that slow is a head wind or an uphill grade.
Anyway if you don't like to pedal you might want a bigger motor. LOL
I have 2 Honda 50's and a Huasheng 50 4 stroke now.