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Vernier-Assist Mixture and Throttle Controls

McFarlane invents a new type of vernier engine control

This brand new type of control has all 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.

These light weight controls use a patent pending drive mechanism. The new roller action vernier provides smooth, jam-proof coarse and fine adjustment without a release button. 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.

We currently offer these new controls for use on non-certified aircraft only. However, we plan to obtain FAA-PMA approval to offer the new Vernier-AssistTM mechanism as an option on many of our currently approved controls for Cessna and Piper, as well as our popular MC600 universal mixture control.

  • Light weight and compact behind the panel
  • Safer - no vernier threads to jam!
  • US Patent No. 8,485,057

MCMV Mixture Series:
Vernier action with only a 3/8" panel hole!

The new Vernier-AssistTM mixture control offers vernier action in a light weight, compact package. It is a drop in replacement for many existing non-vernier mixture controls because it only requires a 3/8" panel hole. It also only extends about 3.5 inches behind the dash making it ideal for aircraft with tight space constraints. Available in a variety of standard lengths or can be custom fabricated to your unique requirements.

Mixture Control Specifications

Installation Instructions 


Mixture Control with 0.061" diameter solid wire end:
Order part number MCMV0241-LLL (knob included) or MCVA0241-00-LLL (without knob).
         - LLL is the length in inches
         - Choose control length 048, 072, or 120
   

MCTV Throttle Series:
Vernier and friction lock - The best of both!

The new Vernier-AssistTM throttle control is adjustable for friction and vernier engagement and is available with three different end configurations. Requires a 3/4" panel hole. Available in a variety of standard lengths or can be custom fabricated to your unique requirements.

Throttle Control Specifications

Installation Instructions - Standard Throttle and Dual Throttle Styles 
Installation Instructions - Piper Style

Throttle Control with 10-32 threaded end:
Order part number MCTV1035-LLL (knob included) or MCVA1035-20-LLL (without knob).
         - LLL is the length in inches
         - Choose control length 036, 048, 060, 072, 084, or 096

Throttle Control with 1/4-28 threaded end: 
Order part number MCTV2035-LLL (knob included) or MCVA2035-20-LLL (without knob).
         - LLL is the length in inches
         - Choose control length 036, 048, 060, 072, 084, or 096

Throttle Control with 5/64" dia 1x7 twisted stainless steel wire end: 
Order part number MCTV3035-LLL (knob included) or MCVA3035-20-LLL (without knob). 
         - LLL is the length in inches
         - Choose control length 048, 072, 096, or 144 

Dual Throttle Control with 1/16" dia 1x7 twisted stainless steel wire ends: 
Order part number MCTV0005DLLL (knob included) or MCVA0005-30DLLL (without knob). 
         - LLL is the length in inches
         - Choose control length 048, 072, 096, or 144 

For ordering information, go to Vernier-Assist Mixture and Throttle Controls.



Updated: 10/20/2012

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