Originally Posted by
torque cyclist
i'm looking to increase my power output. Both HP (or watts) and Torque. So what i'm interested in noting is how much most cyclist are concerned about each factor; Power, RPM and Torque.
My bike has a 21 speed Shimano EF40, 48 tooth front (highest) and as low as 14 tooth rear. 26 inch rim
Personal stats
195 lbs, 5 foot 5
bike 45lbs (about)
Now, I personally like to cruise in the final gear (48x14) and turn about 50-60 rpm. according to bike calc, that plots me at 12.5-15 mph cruise speed. ranging 120 watts- 170 watts. Torque being around 17 lb/ft and 20lb/ft. I hope to be able to cruise 20mph in the future, and that's calculated for 305 watts, @ around 80 rpm 27lb/ft torque.
(MTB tires, and normal handlebars etc.)
I feel most comfortable at those lower RPM, but I can feel alright at about 80 in a lower gear. I was wondering if anyone else prefers a lower cadence as well. My legs are generally strong, but spinning faster is a bit more difficult.
Power is a function of torque and RPM. Trying to push big gears is a common beginner mistake. You want to work to build a smooth cadence around 80 - 90 RPM or so, using lower gears. A higher cadence with lower gears gives you more of an aerobic workout, and works your legs less. Keep in mind, on a longer ride if your heart rate goes too high you can slow down and recover. However, if you push big gears and tire your legs, you're pretty much done. Spinning a lower gear is difficult at first, but is worth the effort.