Hi bbrown2828 . I am the Australian distributor for the Pterodactyl PTE50i engine. Yes they use some of the same components as other engines, but the crankcase, prop hub, spark plug and reeds are different. As far as Aussie Steve's comments about some engines being shiny and no good, that is not correct. Pterodactyl polish their crankcase as a matter of pride in their engine. They now have their own CDI ignition unit which has a much hotter spark than the original Rcexel unit. My engines do 7400 rpm on a Hawk 22x8 prop and drag around 8.3Kg Yak 54 like it was a rag doll. They are a very reliable engine. I offer a money back guarantee on my engines and for all the engines i have sold no one has asked for a refund. All my customers are extremely satisfied with them. I have one customer who is trying to sell his DA50 to buy a second PTE50i from me. They are a lot cheaper to buy than other engines in the same class, but they are worth a lot more than i sell them for. I don't believe in making huge profits like some other retailers. What they do is bring the 50cc models down to the price that anyone can afford. I have been using one of these engines for the past 6 months and it has never deadsticked, other than when i forgot to refuel. The bearings are not cheapie chinese, they are quality Japanese NSK. The carb is a Walbro Japan, not a cheapie Chinese. The cylinder is plasma coated for long life. Reeds are carbon fiber for quicker response. There was an engine review done by Brian Winch who is a world class Australian engineer, and he has nothing but good praise for the engine and the way it is constructed. His engine review can be read on my website, www.wolfmodels.net
Let me know if there is any question that you want answered.

Bob