RCGroups.com user, EddieWeeks, tries out the "bigger is better theory."
"Starting with small 14 x 8 wood props, it almost lifted 16 lbs. (7.3 kg) on the first night of flying. It's very noisy and does not vibrate much at all. As time goes on I will be testing the efficiency of the whole system by measuring grams/watt in the hover. Once I know g/w, I will be able to calculate the proper number of batteries…all at 8S."