This week end i finally had a chance to ride with my new ported motor. It has alot more power up top. But im having a mid range problem. If im riding i 3rd gear 1/2--3/4 throttle in the powerband it runs sweet, it you let the revs down just enough to loose the band and hit the gas to bring it back up it bogs. If you pull the clutch and rev and dump the clutch it will scream back into the pipe. Plugs look like a dark redish brown.
Builder said that i should adjust the needle, any suggestions?
Also, a gearing question.
a bigger front sprocket will spin the tires faster but you will have less top speed, Is this right. Or do i have i backwards. And the back would be reverse, small spins faster but less top speed?