Customerjohn, I got a pair this spring and quickly adapted to doing a century ride within 3 weeks of riding outdoors (did 3 weeks on the rollers as I got ready for Boston Marathon). As far as I see, you can get both quality and quantity. This year, at the age of 37, in my 18th year of doing triathlon, I took 4 min off my bike PB at the Tupper Lake Half Ironman, going from a 2:27 bike split to a 2:23 (the race times included 2 transitions). I rode the bike, like there was no run after, then I got onto the run and took a min off my run PB going from 1:25 to 1:24. In 18 years of racing I have tried every form of training on the planet, and I have never had such huge bike run gains in a year. My results at other races also indicate improvements, but since I have done Tupper Lake Half Ironman 10 times, this is the race where I can compare results the best.
Sadly, I was unable to guage the real benefits of powercranks at my "A" race, Ironman USA where I hoped to PB in my 11th Ironman with my new found efficiency on the bike-run. I made poor execution choices during the race, got dilutional hyponatremia, gained 12 lbs, walked lots on the the run (I had never walked before in 10 Ironmans) and ended up in the medical tent in VERY bad shape. We'll have to wait until the future to discover how much PC's will help my Ironman racing, but the results up to half Ironman have been very encouraging.
I'm also looking forward to getting back on XC skis after a season of PC riding. I suspect with stronger core muscles that are now "aerobic engines", I should be able to hold a "flatter ski" and really put the hammer down and not succumb easily to fatigue at the end of 50K races.
Sadly, I was unable to guage the real benefits of powercranks at my "A" race, Ironman USA where I hoped to PB in my 11th Ironman with my new found efficiency on the bike-run. I made poor execution choices during the race, got dilutional hyponatremia, gained 12 lbs, walked lots on the the run (I had never walked before in 10 Ironmans) and ended up in the medical tent in VERY bad shape. We'll have to wait until the future to discover how much PC's will help my Ironman racing, but the results up to half Ironman have been very encouraging.
I'm also looking forward to getting back on XC skis after a season of PC riding. I suspect with stronger core muscles that are now "aerobic engines", I should be able to hold a "flatter ski" and really put the hammer down and not succumb easily to fatigue at the end of 50K races.