Originally Posted by
couldwheels
I used to have a 26'er 90's MTB with 150 mm crank and I can hold 28 mph on that with small knob tires. Today, with road bike with 170 mm crank with 700c x 32 smooth, touring tires, I can only hold up to 25 mph. I'm 3 mph slower on a road bike, and the speed difference in climbs (identical weight) is even bigger. The irony!
re. Bike Calculator
28 mph on the flat, no wind, mtb tires = 600W
25 mph, road tyres = 380W
So a difference of some 220W right there
.....and you say the speed difference is even bigger on the climbs?
That's it, I'm ordering some 150 mm cranks and turning pro, lol.