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ClearNav Vario Displays
ClearNav Vario Displays Club Variometer Digital Pointer Club Variometer Mechanical Pointer

ClearNav Variometer

Sale Price: $1,350.00

SKU: 5388

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Detailed Description

ClearNav Vario

Vario overview

The ClearNav Instruments vario system has been designed to provide glider pilots with the best possible climb and speed-to-fly guidance, as well as valuable secondary information, including wind speed and direction, air and ground speeds, and altitudes.

The vario can use either probe or purely electronic Total Energy compensation. It fits into a single 57 MM hole and the “black box” (Air Data Computer or “ADC”) can mount either directly to the display module or separately for maximum flexibility.

The vario has been designed to be fully compatible with the “ClearNav” display and, through the use of a serial data port, can also integrate with other moving map/glideslope devices. Go to CNv Vario Features for details.


Both types, the mechanical pointer and digital display offer state-of-the-art total energy variometry for climb and cruise. High performance pressure transducers and advanced digital filtering yield rapid, but well damped response.

Feedback from our customers confirms that the vario has an uncanny ability to respond to lift without the frequent false alarms which plague other fast varios.

A highly visible mechanical pointer responds rapidly and smoothly to glider vertical motions, and a high resolution digital display shows both a short-period average rate of climb, and the average since the climb began.

Audio tones allow for centering without reference to the display.

Both models provide netto and speed to fly information and both are extensively user-configurable to accommodate any sailplane and any pilot preference.

Speed-to-Fly information is presented by visual display, audio tones or both.

Other features common to both models are a unique “Get Home” screen which provides navigation and glideslope information to the home field, winds (headwind/tailwind and vector wind) and electronic Total Energy options.

A simple user interface and a profile editor make the products both easy to use and easy to configure

The Cross Country model adds: a secure flight recorder, navigation to a point in a waypoint database, serial communications to both the ClearNav flight Computer and other third part devices.

Mechanical pointer

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We have chosen a particularly simple UI which is easy to learn and hard to forget. There are two rotary knobs, one (at the top left) selects which screen is displayed (Cruise/Climb, MacCready, wind, etc). The other (at the bottom right) changes the value of a number on the selected screen (such as MC, altimeter setting, ballast, pointer time constants etc). For screens presenting multiple choices (such as flight logs, profiles etc) the knob highlights the active choice. Display screens are grouped to simplify their use: Flying Screens are used for items most commonly needed in flight, Settings Screens are typically used on the ground and are seldom used in flight, and Tools and Information screens are reserved for items which are not frequently used.

In general there is no “set/acknowledge” function – after a parameter is changed it remains at its new value on paging away to another screen.

Almost all set values are “sticky” – once set they remain as set until set again. Generally the stickiness is indefinite. Some parameters, such as MC, bugs and ballast, are reset to default values when the vario is turned on the next day.

ClearNav Integration

If the vario is connected to a ClearNav display, MC, bugs, and ballast values are synchronized and tasks created using the ClearNav display may be copied to the vario. Copying a task to the vario gives the pilot a completely independent navigation and task management option as a backup.

Total Energy

Audio and pointer give fast Total Energy feedback to the pilot and the climb screen has two averagers for longer term assessment of climb:

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The “smart” 20 second digital averager (top right) is a filtered average climb rate. On the transition from cruise to climb this averager is reset. It initially shows the one second average, then the two second average etc until at twenty seconds and longer it shows the twenty second moving average.

A second averager (bottom right) shows the average climb for the current thermal from the start of the climb to now. This value is just the change in total energy divided by elapsed time since the start of the climb. Both averagers have associated timers (top left and bottom left).


The winds screen shows headwind/tailwind component (left) and vector wind (lower right). The arrow (top center) shows the direction of the wind relative to the nose of the aircraft.

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Electronic Total Energy

“Electronic” Total Energy does not make use of a Total Energy probe but uses the pitot and static pressures instead. This allows the vario to be used in gliders not equipped with a Total Energy probe. The electronic Total Energy system may also be used in conjunction with a Total Energy probe to make adjustments to the probe response. This can be very useful for Total Energy probes with under-compensation behavior

Task Management

Two levels of task management exist. The simplest allows a third party device to export a declaration (including the task and its control points) to the Secure Flight Recorder. Normally the task would be managed automatically so that after the start the active waypoint becomes the first task control point etc. We also provide a task screen which gives the pilot the ability to select the active waypoint using the lower right encoder.

It is also possible to export waypoint databases to the vario using the Profile Editor and a USB drive. If a waypoint database is present then there are additional options, including the ability to select landpoints ranked by distance:

Using the all-control-points option it is possible to manage any task quite independently. This provides a valuable backup in the event of a primary nav failure.

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The system
Club vario
Cross country vario
Air Data Computer
Display and Controller
Profile Editor
Simple User Interface
“ClearNav” Integration  
Club vario
Cross country vario
Total Energy
Get Home Navigation
Electronic Total Energy
Secure FR  
Task Management  
CAI Dataport  
In-Flight Information and Settings Screens
Club vario
Cross country vario
Netto and Relative Netto
Outside Air Temperature  
MacCready Value
Other settings
Club vario
Cross country vario
Time Constants
Dry Weight Adjust
Local Time
Tools and information
Club vario
Cross country vario
Flight Logs  
Pointer Zero
Software Updates
Other features
Club vario
Cross country vario
Cruise/Climb Switching

Speed to fly

Speed to Fly is displayed both in traditional push/pull format (left) and numerically as a smoothed Speed to Fly number (lower right). Audio tones allow accurate speed control without reference to the display.

The profile editor provides full control over the audio, including deadband width and optional suppression of sink tones. The time constant controlling the numeric Speed to Fly value is also controlled via the profile editor.

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Get Home Navigation

This screen gives all the information needed to get home including distance, bearing and track, and an arrow which points to the home field, When the arrow is aligned with the nose of the glider it is flying direct to home. The arrival height is on the bottom of the screen. If this value is zero the glider will land just as it gets home (assuming sink and lift balance!).

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Why Buy From Us?

Wings & Wheels has been serving the sport aviation and soaring community for more than 20 years.  We have the largest and most comprehensive inventory of sailplane and soaring supplies.  Nearly everything you find here is in stock and can ship the same day.  We are here for aviators, businesses, mechanics and government.  Our goal is to fulfill your order promptly and as conveniently as our resources allow.

Wings & Wheels is proud to be the American representative for HpH Ltd, producer of the finest quality 304 sailplanes.

Our staff has over 8,000 hours of flying experience in gliders and airplanes. Wings & Wheels is staffed by Sean, Garret, Miki, Matt and Linda. You will have a friendly voice pick up when you call. Our staff is trained to promptly take your orders and ship your products.

Shipping Information

Same Day Shipping

Orders placed by 3:00 pm PST Monday-Friday for “off-the-shelf“, in-stock items are normally shipped same day by UPS.  Although we stock the vast majority of the items on our online store, we cannot assure that they will all be on hand at all times. We ship every order as quickly as possible, and in the event of a delay, be assured that we are working hard to get your order shipped promptly. Due to order volume during holidays, we cannot guarantee that all orders placed can ship on the day after the holiday closure. 

Orders for special cut products may take a few days to ship depending on order volume. Special order products ship based on the lead times of each manufacturer. 

Shipping Service

UPS LogoUPS Shipping

UPS orders will need to be placed before 4:00 pm EST and 4:00 pm PST Monday-Friday to ship out the same business day.  We apply UPS retail rates to calculate shipping costs.  Packages may not qualify for actual wieight due to size.  If dimensional weight is applied by UPS your shipping & packing rate will be adjusted.  Packages are only insured aganst theft if signature delivery is accepted.  Request signature delivery.


Priority Mail & 1st Class order has to be placed by 11am. We will use the flat rate box service if your parts fit in the box and the service cost is less than USPS Priority Mail. USPS may not always have tracking information available.  If you request lower cost USPS shipping you agree to accept all responsibility for lost, stolen and damaged packages.

Delivery Timing

UPS Ground Delivery

USPS Delivery Timing

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