Hi Matt,

I was only speaking from a power to weight ratio. If one considers that 20oz of fuel weighs approximately 600 grams halving that amount does affect the vertical performance. It certainly did in my old Pinnacle with a 140RX. I did a lot of work lightening this model and it made significant difference at the top of a vertical. The YS would probably not suffer here but I can only presume that performance would benefit. Like towing a trailer behind the car.

A 20 minute flight is probably too much for me. Personally, I like to have a flight (8 min) and then review it in preparation for the next flight. It also gives other members a fair go at the flight line. ;-) Everyone to their own though so if it works for you and you have the field to yourself then do it.

Cheers,
Jason.