A second blip was also generated by equipment attached to the rangefinder's handwheel. Traverse of the turret was with a handwheel. A retractable radiator, deployed via a handwheel in the cockpit, was mounted under the nose. The handwheel does not move during motor operation. The treadle belt was shortened to run only from the motor's pulley to the handwheel. However, the valve was overhead, and the handwheel was below an overhead valve. The add-on motor drives the handwheel by means of a rubber belt.