The hour record took 6.6 watts per kilogram.
I also found this article written by Chris Carmichael.
"Maintaining an efficient power-to-weight ratio is a key concern for athletes during the mountain stages of the Tour de France. To determine your power-to-weight ratio, perform a 30-minute uphill time trial using a powermeter to monitor the watts you are able to generate on the bike. Next, record your waking body weight and divide this number into the average power you produced during the 30-minute uphill time trial. This will give you your watts-per-kilogram, or power-to-weight ratio. To be a true Tour de France contender like Lance Armstrong, you need to produce six to seven watts per kilogram of body weight."
Maybe you should tell him about your 30mph average Mountain bike Buddy
