For people considering buying a Saito 125 for this plane go for the (hard to get) YS 110. Probably cheaper and runs way much better. Mine turns an APC 16x6 on 30% cool power at 9600 rpm and because they're super charged they have a blistering fast throttle response and they even consume less fuel than Saito's! centralhobbies.com will have them in stock again within a few weeks. Also order a Tettra 14-16 oz tank because they can handle the high pressure of the YS engines. Sullivan will also work. I flew my Funtana 90 with a Saito 150 for some time and to get the most power out of this engine I needed a 17x6 prop which makes the throttle response very slow, even on 30% fuel. The engine also broke twice within 6 months and I just sent it back to Horizon today after sitting in a box for 3 months. Saitos are nice for sports flying, but they'll break in pieces with intensive 3D.

However, I have a Saito 100 I initially purchased over a year ago for my Funtana and I'll use it for the Seagull's Edge 540. Also consider that for best performance a fuel regulator is a better option than the stock muffler pressure, especially when you use 30% fuel. With the adjustment right for an almost empty tank will make the engine run very rich on leveled flights with a full tank. The Cline regulator is a good alternative, but this thing costs $70 which makes it even more tempting to go for a YS engine with build in fuel regulator. Once my 150 is repaired I'll put it in a biplane and I'll never go for a Saito again. Go for OS 4 strokes for sports flying, YS for 3D.

Does someone have pics of the 540 with a pull-pull configuration? I don't want to add weight and the Saito 100 will most likely result in a tail heavy plane. Is the pull-pull enough to balance the plane right? I'm going to use the Hitec's 635's or if I can get a good deal the slightly heavier digital 6965HB's with a JR R770 receiver and I try to get a 5 cell RX pack with cells between the size of AAA and AA (penlights) and a capacity of at least 1100 mah.

Thanks

Martin