McFarlane Aviation Products has introduced the Vernier-Assist mixture and throttle controls. This new type of control has all of the fine adjustment benefits of an old style push-button release vernier control, with the simplicity, responsiveness, and jam-proof safety of a friction lock control, company officials said.
These lightweight controls use a patent-pending drive mechanism. The new roller action vernier provides smooth, jam-proof coarse and fine adjustment without a release button, according to company officials. Coarse adjustments are made by pushing the knob inwards or pulling the knob outwards. Fine adjustments are made by rotating the knob clockwise or counterclockwise.
The new Vernier-Assist mixture control is a drop-in replacement for many existing non-vernier mixture controls because it only requires a 3/8-inch dash hole. It also only extends about 3.5 inches behind the dash, officials note.
The new Vernier-Assist throttle control is adjustable for friction and vernier engagement and is available with two different push rod end configurations. Both the mixture and throttle controls are available in a variety of standard lengths or can be custom fabricated to the customer’s unique requirements.
Currently McFarlane offers these new controls for use on non-certified aircraft, but they plan to obtain FAA-PMA approval to offer the new Vernier-Assist mechanism as an option on many of their currently approved controls for Cessna and Piper and their popular MC600 universal mixture control approved for most aircraft with carbureted engines.
For more information: McFarlaneAviation.com, 800-544-8594 or 785-594-2741