Originally Posted by
digibud
Realize that if you go from being able to ride at 15mph to 16mph that is a 6% (roughly) improvement. That's a pretty good improvement in itself ...
This. And realise also that the 6% increase in speed requires a (roughly) 20% increase in power becasue of wind resistance. This is why building speed takes time, the amount of extra power high speeds require is disproportionate.