This is (like) a high school physics exam for @Jonathan (and mostly the rest of you cycling geeks).
I recently raced a 30k XCM circuit on my 32lb heavy enduro bike. Total climb 1100m. TOpography was mostly climb for 18.5k, rest was half steep, quasi enduro descent, and half fire roads that allowed for some serious speed. As fun as it can get.
Race conditions were dry, no wind, warm, but not too much once in motion.
(Irrelevant, but interesting event location on google maps: https://goo.gl/maps/BKmNHjTFXJrvWKpx8)
Total race-ready weight (me+bike+supplies) was 182lb. (Pro tip: Water bottle was only half full at start because aid-station spacing allowed for precise refill. This saved me carrying uphill about 300g XD.
My ftp is 193.
My race NP was 143.
Total work recorded 1175kJ.
My total race time was 2h 48min.
What could have been my total time, had I used my wife’s DC bike that weights only 25 pounds?
What could have been my total time (had I managed to survive the gnarly DH) with an 18 pound scott scale?
My next XCM is a 50km circuit with a 1500m climb.
Who of you would be next to me when I explain my new equipment needs to my wife?