When Power to Weight Ratio is King (or Queen)
October 30th, 2010by George Villarreal
When I first met Lee S. I saw a new novice cyclist with reflectors still on her wheels. She had the new cyclist enthusiasm and clothes to match. Sporting a new Cat-Like helmet she looked the part, but the one thing stood out in my mind was that she was destined to have a very formidable power to weight ratio. After years of riding most cyclists loose pounds of fat and look thinner than your average Joe. But Lee was already there, and even thinner than most. She was Tour de France thin. Her body was that of a young Audry Hepburn or in contemporary terms Taylor Swift and had the long skinny legs to match. Now before I get in to trouble here. I have to add that Lee’s husband Craig is a super strong rider in our club and has great legs too. He’s not a Audry or a Taylor but he is a guy after all.
Power to weight ratio is simple. Take your power output and divide by your weight. This simple formula is used extensively in the engineering fields to calculate automotive, airplane, vessel, etc. speeds and efficiency. There are all kinds of fancy equipment that can measure this with scientific calculations abound. But for me the bottom line is who will dominate in the hills. For serious cyclists this is the King of the Mountains (KOM). The polka-dot jersey. The figure of the lone rider, riding way ahead of his comrades. And the famous quote “catch me if you can”.
There doesn’t need to be a huge difference in weight for someone to gain a 30 second lead on a 20 minute hill climb. Given two riders with similar power outputs, and one 5 lbs lighter, the lighter rider will slowly pull away. A gallon of water or milk weighs about 8 lbs, think about it next time your next to someone on the hills. How much extra milk are you carrying? “Milk does a body good”, but a few extra milk gallons will slow you down. Lee and I are about the same height, but she probably weighs 25 lbs less than me. I have more muscle, but she has way less weight. And the steeper the hills get, the greater advantage she gets. I guess that we are about even on a 3-4% grade, but above that I am toast. But if I lost an additional 5lbs, I could probably keep up with her on a 5% grade. Lee has never divulged her exact weight to me. And for a matter of fact neither has her husband Craig. These figures are well guarded as they would give their competitive edge away. So for now I can only guess and it only looks bad for me.
So in the interim, I have decided to pick on someone my own size, and that’s Tall Joe. Tall Joe is 6′6″, and skys over me but his power-to-weight ratio is very close to mine when I am around 150 lbs. In messing around with Joe for KOM points, Joe’s height doesn’t matter only his power-to-weight ratio does. Joe and I don’t like losing KOMs, and we sure have a fun time beating each other up. Joe and I are also heavily involved in Time Trials, here there is another measurement, its called power to aerodynamic ratio, but that is another story.
Just the other day on our club’s Tuesday ride, climbing up Cummings Skyway Lee had a chance to show her power-to-weight ratio. We had several good riders show up including Tall Joe. As we rode out of town toward the Zampa Bridge, I could see that there was going to be some, lets say “fun”. A ride pace and dynamics are always determined by the people who show up. Mix a dozen ultra light bicycles, with ample spandex, add a pinch of testosterone, stir vigorously and bake on a hot road for 120 minutes or until the group crumbles apart.
As we left the last regroup before the climb, Tall Joe bolted to gain an early lead. Catching someone on the climb is no fun and there’s a psychological advantage to being up ahead. Ed W. responded quickly with a quick “he’s not going anywhere” came around Greg D. and I. So as Greg and I watched Ed cross over the 80 Fwy to catch Tall Joe, we slowly picked up the pace. Greg was out to regain his fitness as he has been out months and is recovering from back surgery. I was also out recovering. Recovering from all the food I ate the previous week and Greg was riding strong. As he pick up the pace, so did I. I wasn’t about to let him open up any distance. Then to my surprise, along came Lee and passed us both. As we watched her climb away, Greg looked at me and commented, there goes Andy Schleck (2nd place Tour de France 2010). All ready suffering this didn’t comfort me any. Greg and I took turns leading and clawing our way back up to Lee. It was only when she slowed down to talk with my wife Lisa who started 3 minutes ahead of the group, did we catch her. We both thought that she cracked and I could see Greg was not going to slow down. We both came around Lee and Lisa quickly.
Now I was wondering what they could have been talking about? You know how women team up against you. I think Lee was thanking my wife Lisa for fattening me up, and how that extra 5 lbs is really making a difference slowing me down. My wife is an excellent cook and I would put her up against many of the chefs in the Bay Area. Having a great cook at home doesn’t help, I think its a women conspiracy.
Greg opened up a small lead as we rode the final 5 minutes of the climb. As I closed the gap, I notice Lee right on my wheel. I only had one burst of speed left and I wanted to save it for the top. When I caught Greg, Lee again quickly came around both of us and there was nothing we could do. She was in the drops, pushing hard and quickly opened up a nice gap. Lee’s power to weight ratio was impressive to watch. I know what I need to do to better mine. I am sure when Lee went home that day she talked to Craig about how she smoked his buddies on the hill. There’s quote that goes “he who runs away today lives to fight another day”. In cycling its “he who doesn’t get a heart attack today lives to ride another day”. It was that day for Greg and I.
