RE: Where can I find some modern combat engines?
I got a used one from Yaro as above for about $100 less than new. It has a few casting fins broken off but runs good. It had a hard life. He wanted to update to the newer 2012 model. You could email him and ask. I don't think he is in the used business though. I think the lines are .4 mm or .016"by 52 feet.He has them cheap ready made too. I think $7 with a nice reel. Mine measured .018". I think .015" by 52' would be ok to fly on your own. Just give it a pull test once in a while and after each boink. He is around Toronto but I think his planes at least are dropshipped from Russia or whatever. He has some shutoffs that are not needed but actually make the plane easier to start with the bladders, and will shut off if there is no centrifugal force. I got the $15 plastic one but everyone says the aluminum one stands up better.