I don't have the flip yet but should be less than 5 lbs. For some reason the local hobby shops carry 10, 15 or 30% nitro but not 20%. I'm too cheap to buy the 30% heli fuel. I may be able to special order the 20% though.

As far as the lube, Wildcat has 18% oil and Bryons has 16% - I've added Byrons castor oil to bring the % to 20 for my Saito .72. Some at the field I go to use regular glow fuel (10 or 15% nitro and 16% oil mixture) on Saito's w/o any problems.

Have you run the YS on 15% w/o starting or other problems? Thanks for the feedback
Bill