I am glad Cemelia found my comments entertaining.
! 200 or 300 cm³, whatever! I am running a 24 inch propeller on a Zenoah G 62, less than half the size of that the V 12. So I'm still wondering about that. By the way, if this message seems punctuated strangely, it is because I am dictating it to my iPhone's Siri while driving!

I just did something that has been on my list for a long time! I have these Black and Decker electric screwdrivers with nickel metal hydride batteries that are always dead when I go to use the screwdriver. I replaced all the battery packs with home made low self discharge batteries from the hardware store. You can tell because usually the label says precharged. I only mention this because I suspect I am not the only one who is annoyed by these older electric screwdrivers. Yes you can buy new lithium-ion screwdrivers, but why spend the extra money when it's not necessary.