Verniers

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What They Are and What They Are Used For:

Verniers are used for accurate length measurement.

The length of the linkages on the helis controls are critical – so being able to accurately measure (to within 0.1mm) is vital to setting the heli up properly.

Digital verniers are not compulsory, but they make life much easier and aren’t too expensive these days.

How to use them:

Verniers have jaws for measuring both outside and inside dimensions.  Open the jaws to match the length of what you are measuring, then read off the length.

Linkages can be measured by the overall length, centre of the ball or rod length.  The heli manual usually gives recommended lengths for all linkages to start with.

Measure the linkage, then use the ball link pliers to disconnect, then screw the linkage to adjust.

Verniers are also used to make sure the fly bar is installed exactly central, and that the fly bar paddles and fly bar weights are equally spaced from the centre of the main shaft.