Steve's observations are correct. Further the friction involved in the RDS is largely in the mind of the modeler. In practice, it has negligible effect. I have done well over 40 installations. Check out the RDS website, http://www.proptwisters.org/rds2 for details. ----- Original Message ----- From: "Steve Witt" <[EMAIL PROTECTED]> To: "sloppymoeley" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Sunday, March 24, 2002 9:40 PM Subject: Re: [RCSE] RDS in EPP
> On Sat, 23 Mar 2002, sloppymoeley wrote: > > > I am about to start construction of an EPP foam plank/wing for > > dynamic soaring. I was considering using the Rotary Drive System on > > the elevons to keep drag to a minimum and help protect the servos > > from damage. However, I think that the EPP may not provide a rigid > > enough surface to mount the servos to as the "squishiness" of the > > foam may allow some rotational play. This play might cause some slop > > and flutter. > > Has anyone had experience with this system in EPP airplanes? How > > were the results? > > Thanks for your time, > > Joe Morley > > I've never used an RDS system, but I've built 7 or 8 EPP airplanes with > wing-mounted servos. I'm not sure why the torque developed in a servo > twisting an RDS linkage to the elevon would be any different from the > torque developed in a servo pushing a conventional control rod. If there > was no (or small) friction in the RDS linkage and the elevons were hinged > similarly, it would seem the same force would be necessary to deflect the > elevons, resulting in the same torque back at the servo that the wing > would have to resist. > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
