In our current fast advancing hobby, products are changing rapidly. The problem with this is that there are still many good older generation products being used and traded which are no longer documented by the manufacturer and may have been acquired without documentation. The data on this web site started as my personal collection of articles and documentation. It  represents a significant effort on my part and is placed here for the benefit of the Heli R/C community. You are welcome to view, download, and print any information you desire. You are welcome to link or direct any other individual to this site. You are not authorized to republish the data in any form without my permission. Is that too much to ask for? Thanks for visiting--Al