You can delete one if you want.

The 30% nitro is awesome in a 4-stroke and even YS recommends using 20-30%. It's only a cost issue that people don't like. It makes a big increase in performance. The only thing I can say with 4-strokes is to add castor or synthetic oil to the fuel you buy at the store to bring it up to 20% lube. The engines last a lot longer. 4-strokes need plenty of oil.

how much is 30% fuel?

What firewall mods do you have to do when useing a Saito 100?

I just wanted to add a post here as the trend to over power planes is so strong. The Funtana and I went to the field last night for the maiden flight as in Minnesota we are finally getting some nice weather. It is powered by an OS MAX .46FX. It weighed in at 5 lbs 11 oz and was pulled by a zinger 12x4 prop. It flew so nice! Although I'm really not into hovering the plane it performed most every thing I was comfortable to throw at it on it's first two flights. I found myself running at 1/4 to 1/2 throttle most of the time. It is a nice flying plane. So if your out there wondering if you can get away with the smaller engine I would say give it a try, you might be surprised!

One of the prototype Jett BSE-76L 3D engines was tested in a Funtana. Still flying, and the combination flys AWSOME!! Using an APC 14x4W. Top end turns about 11K rpm.

The 3D engine uses a non-tuned muffler. Linear throttle, tons of midrange torque.

The Jett 76L with the lite muffler weighs 4 grams less than an OS46fx. Drops into the OS bolt pattern.

My .76L is currently in an AeroWorks 40 size Edge 540. Flying weight is about 6.25 lbs. This too flys awesome with the 14x4 out front. I've also had good success with a standard APC 14x6. It never sees full throttle unless accelerating vertically.

Bob

Saito recommends running NO castor in their motors, They also state that they got better performance and lower temps with 30% Heli fuel!