RADIO CONTROLLED CHOKERS

Operation

In the case of cable yarding, the RCC is set in the same manner as conventional chokers. When the turn arrives at the landing, the yarder operator slackens the rigging or carriage line and releases the chokers using a remote keypad mounted in the cab. Choker tension creates sufficient friction between the latch pin and arm to prevent accidental release when the logs are in the air. The chokers can be released simultaneously with one button press, or individually.

To release the chokers individually, the yarder operator must be able to identify each one at a distance. Keypad buttons are numbered 1-9 plus an 'A' button for releasing all chokers. Color codes on the keypad buttons matched to fluorescent paint on each choker, or hanging the chokers on the rigging (i.e. front=button 1, middle=button 2, rear=button 3) such that the yarder operator can identify them, are two possibilities.

Example of a Typical Operating Set Up of the Choker System.