Hanging heavy loads or devices from the Starbird SB-1 with it’s long wingspan extended may call for more weight than it’s 10 lb counterweight can balance. For those times, the SB1-BB adds another 6 lbs to the counterweight. SB1-BB is easy to install, just remove the cover from the back of the counterweight and slide the ballast bag in. Once the ballast bag is installed, it is recommended to check the counterweight bike lock and adjust the lock as necessary to insure the counterweight does not move with the added weight.
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