OK. Checked speed with gps tonight. Fastest I got it on level ground was 25 mph. Not sure of the rpms because I don't have a tachometer. Where do you guys get yours? I weigh in at 200 lbs, bike with motor weighs 60 lbs. I have no problems pulling the hills, it even accelerates going up them. I am thinking of going to front=10t rear=44t. I would like to see a cruising speed of 30, max 35.
25 mph with 29" wheels is 5600 rpm
something is wrong with your motor.
Check your valves, you will lose power if they are too loose.
10 tooth to 44 tooth would give you a theoretic top speed of 55 mph with 29ers at 7800 rpm
6500 rpm would be 42.5 mph
Never going to work!
if you can't go faster than 25 mph with a 18.75 to 1 ratio how is going to a 13 to 1 ratio going to help?
You don't need a tach if you have all the accurate gearing ratios and tire diameter.
The TTO tachs are the best, look on Amazon.
what do you base your decision on to go with front=10t rear=44t.????