CAP232S:

Did somebody talk about propeller slippage? although I don't own a BME 110 yet, that's one of my concerns. I have seen spinners and propellers damaged by this nasty inconvenient. I submitted the same question in this forum as well, here you will found some answers too:

[link=http://www.rcuniverse.com/forum/m_2526295/anchors_2590325/mpage_1/key_/anchor/tm.htm#2590325]BME 110 Owners [/link]

I don't know a lot about engine design, evidently the single bolt propeller along with other weight savings tricks, together are the key behind the weight reduction of this engine, however that's the little something that makes me thing twice about investing in this engine. I am with you I wish I had a BME 110 with 6 bolts to attach the propeller (having same power and same weight), however so far owning and flying my airplane with that engine is just a project.