I'm not sure how well it will work in an RC airplane, but I can assure you from my own experience that Shindaiwa weedeaters are the best weedeaters you can get. I've tried Stihl, Echo, Husky, etc but I'd take a Shindaiwa over any of them. Years and years of realiablity out of those engines. They start first pull after sitting in storage all winter. Shindaiwa makes an entry level weedeater that you can get for around $200. I think it's a smaller displacement. However, most Shindaiwa's have smaller displacement engines comapred to Ryobi, Homelite, and other cheaper brands. Larger displacement doesn't automatically mean loads more power in this case.