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--- Begin Message --- Guys. . .a very lively discussion in presently going on in RC Groups about installing a Rotary Driver System (no external wing hardware) in moldies. Those of you who have those might want to get into the act.

The pertinent link is http://www.rcgroups.com/forums/showthread.php?t=775640&page=13. There are presently over 185 posts including some by JW and Mark Drela.My initial contribution is in Post 66 on page 5. Some others with mechanical engineering expertise are doing their own R & D to contribute their finding

My own contribution to RDS development started about 20 years ago. Subsequently there were articles on the concept published in the September, 1993 issues of Model Aviation and RCSD. In my website at http://genie.rchomepage.com I have a lot of RDS material in File 6, but I consider the RDS surface only scratched. More thinking needs to be done on it to maximize its potential and ease of installation..

This morning I did a drawing now viewable in Post #186 on page13 that offers some ideas for pre-fabbed and more refined RDS parts that would require some precision machining. What I illustrate is certainly doable and may be of interest to look over.

It's been a long road to get the RDS into broader use, largely stymied by the advent of moldies with pre-made wells to accommodate traditional hardware. However, I hear some of the Europeans, who compete at high level, are custom installing their own RDS versions in the molding process without even having any well covers. It's very good news to hear that RDS systems to assure nothing hanging out of the wings are being now employed in high end airframes.

One of the things about RDS that I find very intriguing and that I use in my Genie line of sailplanes, is that in 3-piece wings, no wells, servo mounts, servos, leads, connectors or well covers, as well as horns, clevises, pushrods, etc. are needed in the tip sections. This simplifies tip construction and moves mass closer in for better response in the roll axis.I get into this in File 3 of my website.

In any event, you may find that RC Groups link to provide some interesting reading and hopefully, have something to contribute to the discussion.


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