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Winch Linkage

For the linkage system I used 8mm x , the first piece from the servo I tapped a M2 hole at servo end with a flat washer between the servo this is then adjusted for free movement and secured with a lock nut. Second angle piece had both holes tapped M2 and again fitted with flat washer and fastened with locknut. The pivot piece I soldered a brass tube in centre as seen in photo also had to add spacer pillar of 10 mm to get correct height as a straight pull on pillar is required so no twist on pivot as with the magnet pull there is a lot of strain hence the reason for upgrading from micro servo to 3kg servo. This is fitted with thick washer and nyloc nut to allow free movement but not sloppy. The final part of the linkage is the most critical this is 2mm brass rod with a long thread for adjustment and ease of fitting, other end is 6mm dia x 2mm thick brass disc also tapped M2 and screwed onto the rod then soldered for for security. Next the two brass pillars one drilled for the rod the other solid both have 1mm shoulders and tapped M2 with the link approx 12mm between centres (may change according to servo movement) on top to move freely on pillars. The hole going through the motor mounting for the rod also tapped M2 with locknuts either side to keep secure. This must be exactly below the centre of the motor shaft to ensure a straight pull from the magnet drum. The operation of servo. When magnet is against chain drum and servo in neutral position inside pillar should be resting against disc on the rod. When servo moves to down position it should pull the the magnet totally free from the chain drum and allow the it to revolve freely the motor at this stage will also turn but if servo is fully over should not affect the free fall. When the servo is returned to neutral position the outside pillar will tap the disc on the rod and the magnet pull draws the magnet drum back home. Now when the servo goes to the raised position the linkage slides along but does not press on disc and the motor will be raising the anchor. Bother motor and servo are connected to same receiver plug. The speed controller allows inching of the anchor as it comes home. Adjusting servo movement on transmitter is not advisable as it will effect motor speed. Best to adjust linkage to get correct. Hope this is all clear any queries with this just ask and I will try to help. Elsrickle

4 years ago by Elsrickle