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Overview
I do my best to keep a good stock of the latest high-tech gadgets.  But yesterdays latest toy is out of date today and worth less than when it was new.  The page includes a combination of new but slightly out of date items and a used items.

My plan is to keep reducing the prices on this page until all the items sell. The items will sell to the first person that orders them at the listed price. Please don't contact me with offers. The longer you wait, the lower the prices, but I have only 1 or 2 of most items - so if you wait too long someone will buy the item you are interested in before you.

Limited Availability
The items on this page are all units in my stock.  When they are sold the price is no longer available.  I cannot order additional units for sale at these liquidation prices.


How to Order
To order a product, click on the
button next to the product. 
When you are ready to complete your order, click on the
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Click on the small images to view larger versions.

Part # Description Photo
(Click on images below to view large versions)

Price

Lead-time

Compaq

CompaqAero1500 Compaq Aero 1500 Pocket PC - Used
I have purchased a few of these classic and valuable Pocket PCs from customers that traded up to other devices.  Many glider pilots still love this old PDA because its black and white display is easier to read in sunlight than newer color PDAs.  Glide Navigator II soaring flight software runs great on it.  All the units have been thoroughly tested and approved by Cumulus Soaring, Inc.

Let me know if you have any good, used power/data cables or cradles for the Compaq Aero 1500 PDAs.  I need any I can find because the power/data connectors used in the cables are no longer available.

All units include:

  • Good screen with no major defects or deep scratches - some units with defects are available at a lower cost
  • Wall charger
  • Desktop cradle (not for use in a glider)
  • Good (as far as I can tell) main battery
  • New main battery
  • New backup battery
  • Soft case
  • Stylus
  • All buttons tested
  • Serial port tested

Note: Many used Compaq Aero 1500 units have a broken cover for the backup battery.  Many require the use of tape to keep them closed.  It is not a problem.

$75 In Stock
Segelflug-Bildkalender
Calendar-Segel-Bild-2018

Segelflug-Bildkalender (Sailplane Photo Calendar), 2018
by Werbe-Verlag - Cornelia Temlitz
The Segelful-Bildkalender offers fantastic soaring photos in a large format. 

Suggestion: Add a 2017, 2014, 2013, 2012, 2011, or 2010 Segelful-Bildkalender to your order for only $10. They're out of date, but the very large photos make great posters - the calendar tab is perforated for easy removal.

With 13 brilliant shots, fascinating motifs, high-quality workmanship and great stories and reports are our maxim for the new gliding picture calendar.

The 49th edition presents a selection of diverse aircraft types and famous vintage cars. In an "orchid" with a span of 28 meters, the season is opened in a training camp in Vinon. The perfect wave "on top" found an LS7 and an ASW 20 in 2,500 MSL in the Alps. Two completely different double-seaters are used in the Austrian Alps for the higher school of gliding. Thermals up to 4000 meters and visibility to the horizon had an Arcus-T in the French mountains near Gap. The restoration of a PIK 5 from 1946 took 10 years. There are only 3 airworthy specimens of the DFS Habicht E worldwide, we introduce one. Do you want to know how 10,000 kilometers of track came together, what a surveying glider serves and much more?

This calendar offers extremely well written and interesting information on the back of each photo.  It makes this calendar really stand out from all others. 

Note: This calendar includes a very basic calendar.  It does not have a large grid of days that can be used to write appointments or notes.  The SSA Soaring Calendar is more suited to use writing notes on specific dates.  But this calendar's large photos look great on the wall of your office or soaring club clubhouse.

Makes a great gift!

Dimensions
18.9 inches (48 cm) x 11.4 inches (29 cm)


Click on the images above to view larger versions. NOTE: The "Aero Dreams" logo will not be on the printed calendar pages.


Sale: $19

In Stock

AddToCart
2018 - $19

 

AddToCart
2014 - $10

AddToCart
2013 - $10

AddToCart
2012 - $10

AddToCart
2011 - $10

AddToCart
2010 - $10

Calendar-Segel-Bild-2013

Segelflug-Bildkalender (Sailplane Photo Calendar), 2013
by Werbe-Verlag - Cornelia Temlitz
The Segelful-Bildkalender offers fantastic soaring photos in a large format. 

Note: These calendars are somewhat out of date, but the photos are still awesome.  The calendar data is at the bottom of every page that is perforated so that it can be removed easily.  I have just a few of these remaining in stock.  $10 is a great deal for 13 very nice soaring posters.

This 44th edition of the Soaring Calendar has 13 brilliant color photos and captures the fascination and aesthetics of this wonderful sport. The reverse of each page bears further details about the how, where and when of the picture; for example: the "Adventure Sailplane" - agile in the air, and convenient on the ground; nine months' preparation for the World Championships; a Winter Dream ; the ASW 27 B - the long-distance runner. Another page tells of the further development of the Akaflieg Braunschweig SB 10. Also the first flight of Cumulus III f D-6059, nearly 60 years ago. We may not have been there at the time, but know what happened next. And there are other surprises; in large format 48 x 29 cm (18.9 x 11.4 inches) and the folding monthly dateline.

This calendar offers extremely well written and interesting information on the back of each photo.  It makes this calendar really stand out from all others. 

Note: This calendar includes a very basic calendar.  It does not have a large grid of days that can be used to write appointments or notes.  The SSA Soaring Calendar is more suited to use writing notes on specific dates.  But this calendar's large photos look great on the wall of your office or soaring club clubhouse.

Makes a great gift!

Dimensions
18.9 inches (48 cm) x 11.4 inches (29 cm)


Click on the images above to view larger versions.



$10

In Stock
Calendar-Segel-Bild-2012

Segelflug-Bildkalender (Sailplane Photo Calendar), 2012
by Werbe-Verlag - Cornelia Temlitz
The Segelful-Bildkalender offers fantastic soaring photos in a large format. 

Note: These calendars are out of date, but the photos are still awesome.  The calendar data is at the bottom of every page that is perforated so that it can be removed easily.  I have just a few of these remaining in stock.  $10 is a great deal for 13 very nice soaring posters.

Once again, the annual soaring calendar features 14 fantastic color photographs revealing the dynamism and beauty of soaring flight.  The is the 43rd edition of our popular yearly publication, with related stories printed in English, German and French.  This year's subjects include: solar-power; the latest in small jet engines; the safety factor of sustaining motors; and modern instrumentation.  Our photographers guide us along the Pyrenees mountains, ride wave lift above Germany's Black Forest, and soaring over southern Australia.  The beautiful wood of the Grunau Baby III is a photogenic counterbalance to plastic.  Have you ever heard the story of the Baba Jaga?  If not, try and get a hold of a copy.  Once again, the unique soaring calendar is spine-bound in a unique large-format of 48 x 29 cm (18.9 x 11.4 in).

This calendar offers extremely well written and interesting information on the back of each photo.  It makes this calendar really stand out from all others. 

Note: This calendar includes a very basic calendar.  It does not have a large grid of days that can be used to write appointments or notes.  The SSA Soaring Calendar is more suited to use writing notes on specific dates.  But this calendar's large photos look great on the wall of your office or soaring club clubhouse.

Makes a great gift!

My favorite photo from this year's calendar is the one of the Schempp-Hirth Arcus E electric-powered sailplane.  What a lovely glider - with an elegant, clean powerplant!

Dimensions
18.9 inches (48 cm) x 11.4 inches (29 cm)


Click on the images above to view larger versions.



$10

In Stock
Calendar-Segel-Bild-2011 Segelflug-Bildkalender (Sailplane Photo Calendar), 2011
by Werbe-Verlag - Cornelia Temlitz
The Segelful-Bildkalender offers fantastic soaring photos in a large format. 

Note: These calendars are out of date, but the photos are still awesome.  The calendar data is at the bottom of every page that is perforated so that it can be removed easily.  I have just a few of these remaining in stock.  $10 is a great deal for 13 very nice soaring posters.

The 42nd issue of our internationally popular wall calendar has 13 color photos revealing the fascination and beauty of soaring flight.  The rear face of each page bears a description in English, German and French. Subjects include the very latest sailplanes under test, popular vintage and veteran gliders such as the L-Spatz III and OSV bungee launching, coastal soaring, circumnavigating Cologne in an ASW 15b, plus the story of the only woman flying in the Unlimited National Team.

Do you know where the 2011 FAI World Sailplane Grand Prix Finale is to be held, and the anniversary commemoration date of Soaring’s most important event?  All this and more in the latest issue of the Soaring Picture Calendar; make sure of your copy and you will be up-to-date with coming events. Produced in the popular wall format 48 x 29 cm with an unfolding weekday panel: this is a unique product – so order now!

This calendar offers extremely well written and interesting information on the back of each photo.  It makes this calendar really stand out from all others. 

Note: This calendar includes a very basic calendar.  It does not have a large grid of days that can be used to write appointments or notes.  The SSA Soaring Calendar is more suited to use writing notes on specific dates.  But this calendar's large photos look great on the wall of your office or soaring club clubhouse.

Makes a great gift!

Dimensions
18.9 inches (48 cm) x 11.4 inches (29 cm)


Click on the images above to view larger versions.

$10

In Stock
Calendar-Segel-Bild-2010 Segelflug-Bildkalender (Sailplane Photo Calendar), 2010
by Werbe-Verlag - Cornelia Temlitz
The Segelful-Bildkalender offers fantastic soaring photos in a large format. 

Note: These calendars are out of date, but the photos are still awesome.  The calendar data is at the bottom of every page that is perforated so that it can be removed easily.  I have just a few of these remaining in stock.  $10 is a great deal for 13 very nice soaring posters.

We are proud to present the 41st annual Segelflug-Bildkalender, with 13 fabulous color photos showing a wide range of beautiful sailplanes and landscapes.  The back of each monthly page has an extended description in English, French and German.  Subjects include the very newest sailplanes, "jet-flying made easy", much-loved vintage and veteran gliders, flying over the Mojave Desert, and historic early attempts at flight.  This exciting range of subjects is rounded off by: "Four generations of the same flying family" and "Hans Jacobs' Rhönsperber".  Each page is 48 x 29 cm (18.9 x 11.4 inches) with a fold-out monthly calendar panel.

This calendar offers extremely well written and interesting information on the back of each photo.  It makes this calendar really stand out from all others. 

Note: This calendar includes a very basic calendar.  It does not have a large grid of days that can be used to write appointments or notes.  The SSA Soaring Calendar is more suited to use writing notes on specific dates.  But this calendar's large photos look great on the wall of your office or soaring club clubhouse.

Makes a great gift!

Brochure-Segelflug-Bildkalender-2010.pdf

Dimensions
18.9 inches (48 cm) x 11.4 inches (29 cm)


Click on the images above to view larger versions.

$10
 

In Stock
Soaring Society of America
Calendar-SSA-2016

SSA Soaring Calendar, 2016

Sale: These are out of date, but the photos are still awesome.  $5 is a great deal for 13 very nice soaring posters.

From the Soaring Society of America
The 2016 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions. Makes a great gift!

Discount for quantity purchases - If you purchase 3 or more you will be charged $13.95 each rather than $15.95 each. 

Dimensions
14 inches (35.6 cm) x 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)

Sale: $5
(formerly $15.95)

In Stock


2016 - $5

Calendar-SSA-2015

SSA Soaring Calendar, 2015

Sale: These calendars are almost out of date, but the photos are still awesome. The photographs look great on your home or office wall.  I have just a few of these remaining in stock.  $5 is a great deal for 13 very nice soaring posters.

From the Soaring Society of America
The 2015 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions. Makes a great gift!

Dimensions
14 inches (35.6 cm) x 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)


Click on the images above to view larger versions.

Sale: $5
(formerly $15.95)

 

In Stock


2015 - $5


2014 - $5


2012 - $5


2011 - $5


2010 - $5


2009 - $5


2007 - $5

Calendar-SSA-2014

SSA Soaring Calendar, 2014

Sale: These calendars are almost out of date, but the photos are still awesome. but the photographs can be cut-out and look great on your home or office wall.  I have just a few of these remaining in stock.  $5 is a great deal for 13 very nice soaring posters.

From the Soaring Society of America
The 2014 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions. Makes a great gift!

Discount for quantity purchases - If you purchase 3 or more you will be charged $13.95 each rather than $15.95 each. 

Dimensions
14 inches (35.6 cm) x 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)

SSA Calendar 2013

Sale: $5
(formerly $15.95)

 

In Stock


2014 - $5


2012 - $5


2011 - $5


2010 - $5


2009 - $5


2008 - $5


2007 - $5

Calendar-SSA-2012 SSA Soaring Calendar, 2012
Sale: The calendar is out of date, but the photographs can be cut-out and look great on your home or office wall.
From the Soaring Society of America
The 2012 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions. Makes a great gift!

Discount on quantity purchases.  If you purchase 2 or more you will be charged $8.95 each rather than $12.95 each.  The discount will be applied when the order is entered into my accounting software. 

Dimensions
14 inches (35.6 cm) x 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)

$5
 

In Stock
Calendar-SSA-2011 SSA Soaring Calendar, 2011
Sale: The calendar is out of date, but the photographs can be cut-out and look great on your home or office wall.
From the Soaring Society of America
The 2011 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions. Makes a great gift!

Discount on quantity purchases.  If you purchase 2 or more you will be charged $8.95 each rather than $12.95 each.  The discount will be applied when the order is entered into my accounting software. 

Dimensions
14 inches (35.6 cm) x 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)

$5


 
In Stock
Calendar-SSA-2010 SSA Soaring Calendar, 2010
Sale: The calendar is out of date, but the photographs can be cut-out and look great on your home or office wall.
From the Soaring Society of America
The 2010 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions. Makes a great gift!

Dimensions
14 inches (35.6 cm) x 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)

$5

In Stock
Calendar-SSA-2009 SSA Soaring Calendar, 2009
Sale: The calendar is out of date, but the photographs can be cut-out and look great on your home or office wall.
From the Soaring Society of America
The 2009 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions. Makes a great gift!

Dimensions
Width: 14 inches (35.6 cm)
Height (of photo pages): 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)

$5

In Stock
Calendar-SSA-2007 SSA Soaring Calendar, 2007
Sale: The calendar is out of date, but the photographs can be cut-out and look great on your home or office wall.
From the Soaring Society of America
The 2007 SSA Calendar is custom-designed with spectacular full color photos of sailplanes from photographers spanning the globe. Monthly grids feature plenty of space to write notes, make appointments and keep special occasions.

Dimensions
Width: 14 inches (35.6 cm)
Height (of photo pages): 11 inches (27.9 cm)
Height (open): 22 inches (55.9 cm)

$5

In Stock
Tasman
VRM10-Sprite

Tasman VRM10 Sprite Digital Audio Variometer

Overview

Tasman Instruments Variometers perform beyond expectations, leading their competitors in performance and value.

Note: I am out of stock of the version with scale from -10 to +10 knots. I don't currently plan to order more. It is a very nice vario, but perhaps hasn't sold well because of the non-color display. I have one in stock in m/s with scale from -5 to +5 m/s for sale for $395 - former price $495.

Tasman VRM10 Sprite Vario
Overview Video, by Paul Remde


Tasman VRM10 Sprite Variometer is one of 80+ videos in the Soaring Product Training series.
Duration: 11 minutes, 27 seconds
You can rent this video for 30 days for $3, or buy it for $10, or rent the entire Soaring Product Training series for $60 for one year.

The VRM10 Sprite fulfills the needs of both sport and competition pilots alike. It enhances the information to the pilots own “feel” to maximize use of available sources of lift when flying around the field or cross country. The response is both rapid and controlled, it is true to the “feeling” of the air by the pilot, re-enforcing the pilots mental image of air being sampled by the aircraft. Technology employed in both hardware and software has many innovations developed by Tasman Instruments and includes features suggested by users of the Tasman Instruments V1000/2000 previous products.

VRM10 Sprite’s key design element is a software module that is able to reject rather than filter inputs from the pressure sensor/TE probe. Because the filter is not” loaded up” working on inputs that are not relevant to the pilot, a faster response in the filtering can be used than otherwise would be possible.

The high resolution that is available from the digital converter results in the instrument being able to respond accurately. High resolution digital converters are slower in operation. To minimize this Sprite uses multiple simultaneous measurements which provide a rapid initial response. Most other pressure sensor Variometers have a small delay to respond, just a fraction of a second, but still a delay that is significant when in flight.

Key Features

  • Advanced Gust Rejection
  • Easy to use (simple user-interface)
  • Easy to install with built-in speaker (external SP100 speaker available as an extra cost option - not usually needed)
  • Easy to view (easy-to-read LCD display)
  • Reliable (no moving parts)
  • Inputs for landing gear and airbrake sensors
  • Built-in voice warnings: landing gear, low-voltage
  • 20 second average and "time since power-up" timer on main display
  • Select from 2 different audio tone styles
  • Sink tone - only when below selected threshold for a period of time
  • Low power consumption (50 to 200 mA)
  • Operates on as little as 6 V
  • Optional PK312 Back-up Battery with 12 hours of operation from a new 9V battery, with automatic switching from main to backup power and automatic power-off
  • Optional FP10-s5V Flight Pack Air Data Sensor box with pitot and static inputs for airspeed sensing, will eventually display speed-to-fly indicators on the VRM10 vario display (future feature).

Simple user operation suitable for club or demanding cross country performance with a "lead the gaggle" optimal response, even have the confidence to leave the gaggle, find your own climbs.

Greater lookout safety as clear audio minimizes the pilot "head in the cockpit" or needle watching with only a quick scan to monitor average climb result required

Personalized settings are available to adjust many features of operation using a simple menu.

Compact size with all required materials supplied for Vario installation. Internal loudspeaker with magnetic shielding, simple connections all make installation easy.

Design Considerations
The most difficult task faced by the Tasman Instruments research and development team was to extend the performance of our previous V1000/V2000 Variometer products. We devoted many hours of intensive laboratory testing and in-flight evaluation, including comparison of competitor products, incorporation of suggestions and feedback collected over many years from our valued customers, all of which have been integrated into the design of our new Variometer range.

Low Power consumption Minimal power consumption with VRM10 Variometers using reflective, non backlit displays and high efficiency audio. Backlights have high power demands that reduce valuable battery life that is better conserved for communications and navigational functions.

Gust Interference rejection provided a strong focus in the development of the VRM10 Variometer. The VRM10 has at its core, fast response with rejection of spurious pressure signals, i.e.. rejected not filtered, leaving for processing pure high resolution barometric data that we glider pilots need.

Improved performance utilizing an interlaced sampling technique, resulting in a sharp attack time, no waiting for a response from the instrument, with the feel in the seat matching the audio from the instrument, where even a quarter of a second is too long causing confusion with extra workload for the pilot.

In summary, our VRM10 glider variometers overcome the common shortfalls of pressure sensor Variometers. Combined with rejection of spurious signals and faster filter response times, real time response performance has been realized, meaning more accurate data for the pilot.

Altitude compensated >>50,000 ft.

Bright clear display with simulated pointer or bar graph, numeric average value and elapsed time clock.

Gear warning input with spoken word message for peace of mind in busy traffic.

3 year warranty. (conditions apply)

Features & Benefits
Features: Benefits:
Simple installation arrowTwo buttons-power and volume
arrowInternal speaker
Display features arrowCentre screen average display numbers (default setting)
arrowTime of flight clock display
arrowTrend arrows for "decision to leave" assistance
arrowLCD pointer display
Fast controlled response arrowMinimal initial delay
arrowGust signals "rejected" not filtered
arrowMinimal stick response
arrowLCD pointer display
High resolution, 0.1 knot arrowStay airborne in light conditions
arrowResponds to small changes for better lift optimization
arrowCentre screen average display in numbers
arrowLCD pointer display
Pleasant audio sound arrowMinimal "head in cockpit" time
arrowLow fatigue
arrowSink tone start time delay
arrowLCD pointer display
Spoken word warnings

arrowClear voice "Low Battery" warning
arrowClear voice "Undercarriage Warning" if connected to switches

Compact size MIL standard housing arrowEfficient use of panel real estate
arrowConforms to 2.25 inch standard
Minimal power consumption arrowReflective display-No display backlight required
arrowHigh efficiency audio
arrowSelf turn off if not flying
Future proof arrowNew speed to fly segments for future add-ons
3 year warranty arrowPurchase with confidence

Audio

The VRM10 has front ports to allow sound produced from its internal speaker to exit directly from the panel. An external speaker can be simply connected automatically disconnecting the internal speaker for minimal power use.

Climb tone can be selected as "Tasman" or "classic" - interrupted sliding tone which changes in pitch and interval.

Sink tone has a timer so that the sink value has to be Continuously below the selected threshold for sink tone to be produced. Sink tone threshold can be either -2.5 or -4.0 knots (-1.25 or -2 m/sec).

Audio response is arranged to give the greatest resolution at the lower climb rates. At climb rates below about 2.5 knots, a change of 0.1 knot can readily be detected in the audio tone. This gives the maximum amount of Variometer information to the pilot at times when a Variometer is most important i.e when trying to recover in weak lift, or to extend a flight on winter days or during wave flights.

Safety
Concise audio is essential to maximize the lookout time for the pilot. Concise audio information maximizes the pilots achieved climb rate without the need for visual reference to the Variometer for confirmation of the current climb rate.

External speaker is easily connected.

Specifications

Variometer

  • Resolution: 0.1Kts.
  • Maximum reading: +/-19.9Kts
  • Drift: Negligible
  • Accuracy: +/- 0.5 Kts Full scale
  • Noise: +/- 0.1Kts max 1.0 second response time

Electrical

  • Operating voltage: 6 to16 volts DC. 12V nominal.
  • Operating current: 50mA @12V and minimum volume setting, Max 200mA (Internally fused)

Temperature

  • Operating Range: -30 to 60 degrees celcius (non condensing)

Mechanical

  • Dimensions: 61.3 x 61.3 x 69mm (2.41 x 2.41 x 2.72 inches) W-H-Depth to tip of tube barb
  • Mass: 175gm (6.2 ounces)

Versions

  • VRM10-k, Units: Knots, Range: +/-10, in stock
  • VRM10-m, Units: m/s, Range: +/-5, in stock

Two Seat Glider Installations
Tasman offers a repeater for use in 2 seat gliders.  However, they don't cost much less than a standard vario and they have less resale value.  They can only be sold to owners of 2 seat gliders.  I recommend buying 2 VRM10 varios for 2 seat gliders.  That way each pilot can adjust the vario to suit their needs and resale value is as high as possible.

Documents

  • sprite-01-150w
  • sprite-02
  • sprite-03
  • sprite-ui-1
  • sprite-dwg-1
Sale: $395

In Stock


VRM10-m
Units: m/s
Range: +/-5

Winter
W-5001-DG1000 Winter MacCready Ring for DG-1000, 80 mm - Sale

I'm not sure how I ended up with this extra ring, but I don't need it. It is designed for use on a standard 80 mm Winter W-5253 variometer (or similar) in knots or ft/min. The ring is marked for use with an airspeed indicator that is in units of knots. A bezel ring is not included. A ring like this normally sells for $100. I am selling it for $45.

The MacCready type ring is an indispensable aid in cross-country soaring.  The ring is rotatable and is marked with speeds and a white triangle.  The chief use of the MacCready ring is to achieve the highest possible cruising speed (average cross-country flying speed) on thermal cross-country flights.  This involves setting the white arrow to the anticipated rate of climb for the next thermal.  Optimum flight performance is assured when the airspeed indicated by the airspeed indicator corresponds to the preselected flying speed to which the MacCready ring has been set.  The MacCready ring allows gliding distance and final approach  to be optimized.  Please refer to relevant literature for further details.  When ordering, please do not forget to state the type of aircraft in which the ring will be used.  If the ring is retrofitted to a variometer of older design, the original threaded ring of the instrument must be removed and replaced by a grooved threaded ring onto which the MacCready ring can be fixed with ease.

$45 In Stock
W-5011-DG-1000 Winter MacCready Ring for DG-1000, 57mm - Sale

I'm not sure how I ended up with this extra ring, but I don't need it. It is designed for use on a standard 57 mm Winter W-5453 variometer (or similar) in knots or ft/min. The ring is marked for use with an airspeed indicator that is in units of knots. A ring like this normally sells for $105. I am selling it for $45.

The MacCready type ring is an indispensable aid in cross-country soaring.  The ring is rotatable and is marked with speeds and a white triangle.  The chief use of the MacCready ring is to achieve the highest possible cruising speed (average cross-country flying speed) on thermal cross-country flights.  This involves setting the white arrow to the anticipated rate of climb for the next thermal.  Optimum flight performance is assured when the airspeed indicated by the airspeed indicator corresponds to the preselected flying speed to which the MacCready ring has been set.  The MacCready ring allows gliding distance and final approach  to be optimized.  Please refer to relevant literature for further details.  When ordering, please do not forget to state the type of aircraft in which the ring will be used.  If the ring is retrofitted to a variometer of older design, the original threaded ring of the instrument must be removed and replaced by a grooved threaded ring onto which the MacCready ring can be fixed with ease.

photo above not correct
bezel-ring not included

$45 In Stock
W-6001-Nimbus4DM

Großkinsky - Variable-Camberflap Ring, 80 mm - for Nimbus 4DM - Sale
I'm not sure how I ended up with this extra ring, but I don't need it. It is designed for use on a standard 80 mm Winter W-6423 airspeed indicator (or similar) in knots. A bezel ring is not included. A set like this normally sells for $170. I am selling it for $50.

Application
As is generally known, wing load and, in turn, the optimum flap positions for the varios speed ranges of a variable-flap glider changes with take-of weight.  Until now, selecting the right flap position has involved using special tables carried on board or observing a confusingly large number of marks on the airspeed indicator.  The new adjustable ring for airspeed indicators makes these complicated methods things of the past.

Features
As the illustration shows, the ring has a double scale for aircraft weight "G": and wing loading "G/F".  Four arrows can also be seen, showing the corresponding angles for the flap positions.  The number of arrows depends on the number of flap positions for the type of glider in question.  Like the MacCready ring of the variometer, the rotatable ring is simply push-fitted onto the airspeed indicator.

Use
One the take-off weight has been calculated by adding the empty weight of the aircraft, the weight of the pilot and the weight of any water ballast on board, the "G" scale is simply turned until this figure is aligned with the 0 mark on the airspeed indicator.  The arrows on the ring now automatically show the correct flap positions on the airspeed indicator scale.  Furthermore, the correct wing load for the take-off weight can be read from the "G/F" scale and entered in an electronic variometer or flight computer, if fitted.  If wing load changes in the course of the flight, due to a reduction in ballast, for example, the ring need only be turned back to the new flying weight, and immediately, the arrows show the new, flight-dependent flap positions.  The ring is calibrated for a standard preset acceleration of 1 g.  If values as high as 1.2 g should occur, as they do in high-performance competition gliding, a second ring with the appropriate values can be fitted during the flight, or changed as required.  If the  Großkinsky ring is not ordered along with a new airspeed indicator, please send us the airspeed indicator and state the type of aircraft in which it is installed, because the scales vary from model to model.  Only the 6 FMS 4 or 7 FMS 4 series airspeed indicators with 510° scales are suitable.
Note: Airspeed indicator not included.

If the  Großkinsky ring is not ordered along with a new airspeed indicator, please send us a digital photo of the airspeed indicator and state the type of aircraft in which it is installed, because the scales vary from model to model. 

$50 In Stock
 

Cumulus Soaring, Inc.
Paul E. Remde

8661 Connelly Place
Savage, Minnesota 55378
USA


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