Chris Reed wrote:

I have read, occasionally, about this add-on auxiliary/turbo engine for
gliders, but can't find any information via Google.

Does anyone know of links or have more information?

http://64.233.183.104/search?q=cache...hl=it&ie=UTF-8

This is what I found. It's in German, but automatic translation
(Google) will help.

Aldo