Just spent some time looking at the Parker Mountain F3F pics (http://www.gliderking.com/race/parker.3.10.01/index.htm). Nicely done. I noticed all the fastmovers had traditional external (presumably draggy) linkages. Wouldn't the drag reduction of RDS be significant in maximizing the speed potential of these planes? Curious jtm RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]