They were marketed as the Fox Falcon. I had an earlier version of it from the 60's that I got for a swap of a brand new Cox TD049. I was a kid that wanted a 60 and then soon realized that He got the gold mine and I got the shaft. It wasn't pretty .it drank fuel, spewed a lot of it out the exhaust and was obnoxiously loud. I dumped it for something else.
Dennis