Originally Posted by
PeteHski
Well I'm pretty sure you would have to be putting out well north of 300W to cruise at a genuine 28 mph (that's the speed pro road racers ride solo on £20k bikes) and you weighed 54.4 kg. So that's at least 5.5 W/kg i.e. world pro level power/weight ratio. You might get there with a massive tailwind, but otherwise no chance unless you are Philippo Ganna!
I'm still slower than local athletes going the same route so maybe the draft we're getting is that good.
Otherwise, the 150mm does make difference to me. With 170mm crank, I feel the "burn" in my legs and back off the effort and slow down.