I installed two for aileron servos in a slope ship. I noticed while perfect with a 4 cell pack, the hum pretty loud with a 5 cell pack, but still work great. Jerry R. Craft VWP -----Original Message----- From: Bradley J Smith [SMTP:[EMAIL PROTECTED]] Sent: Thursday, August 12, 1999 7:43 PM To: [EMAIL PROTECTED] Subject: [RCSE] Hitec HS-81MG Servo Fix Hi all, I too had trouble with some HS-81MG servos I had bought, but found an easy fix. Two were jamming and jittering a lot. I opened mine up since I had already soldered new connectors on them. After opening the case they worked fine, but when I screwed the case back together they started jittering and binding again. After a few tries I discovered there is zero clearance between the metal gears and case -- and no lubrication between the top gear and case or on the bottom of the drive shaft (bottom of the pot). When I tightened the case down, the top gear was apparently binding on the plastic cover. The Fix: Put some non-conductive small motor lubricant (radio shack stuff) between the top drive gear and case. If you are careful you can remove the top cover without taking the gears off and do this. Also I put a little on the bottom of the main drive shaft where it sticks out of the pot under the little circuit board. On all of my servos this fixed any erratic behaviour, and all are working well now. Your actual mileage may vary...and this probably voids your warranty, but its better than missing a good thermal or losing a good plane! Thermals! Brad Smith 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]
