Originally Posted by
tomato coupe
Give it up. The bottom line is that your legs make very poor flywheels, and spinning at a very high RPM is not very efficient due to the energy input required to keep those big sacks of meat moving.
This is trivial to demonstrate. Put your bike on a trainer, remove the chain, and spin the pedals at 30 RPM for 10 minutes while monitoring your heart rate. Repeat at 120 RPM -- your heart rate will clearly show it takes a lot more effort to keep the pedals turning at 120 RPM.
I did 60 bpm at 30 rpm and 75 bpm at 120 rpm. My current RHR is at 44 bpm.
One thing I probably should have told earlier is I only weigh 56 kg with height of 173 cm. It could have been a factor but then, a Pro TT racer example in this thread 20 kg heavier than me is also spinning very high cadence at nearly 110 rpm. If those cadences have poor efficiency then pro racers would not do it. Race cadence rpm would show a decreasing trend but instead, we're seeing the opposite!