Originally Posted by
gregf83
For how long? Unless you are riding with a parachute you should be averaging a much higher speed than 18-22.
If you really can avg 300-350 watts for any reasonable length of time at 145 lbs you should be capable of winning Cat 3 races. Not sure what the problem is although I suspect your powermeter may need calibrating.
IME, a chronic problem. i've seen it run through and entire cycling club in a matter of hours.