I was surprised to hear some one say that potentiometers only have a useful life of 350 hours. This seems awfully low to me. I'd suspect that the limiting factor is not time but rather motion cycles. The limit of which I wouldn't hazard a guess. Bill Swingle [EMAIL PROTECTED] Pleasanton, CA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]

