It's gona depend a lot on how hard you fly it, but then you already knew that didn't you????

I'll give you what I get for fuel burns on my ZDZ-50 and ZDZ-100 based on the type of flying you're talking about. These are estimates based on "eyeballing" the fuel level in the tank after a flight.

The 50 will go through about 1oz. per minute and the 28% WildHare Extra that it's mounted in has the 20oz. tank. I'm usually right about 10 minutes per flight and turn on the timer just before the takeoff roll and it burns about 1/2 that 20oz. tank. The 100 is in an H9 33% Edge and flown the same way using a 32oz. tank, it appears to go through about 1 1/2oz. per minute.

Now that's very little full throttle use practicing IMAC sequences, uplines only and on the Edge even uplines don't require anything near full throttle while I do use full throttle on the WildHare. I usually try a bit of 3D stuff each flight but not much.

Hope that helps but I'm afraid I'd be nervous on a 75cc engine and anything smaller than a 24oz. tank...