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Homebuilts with spring steel landing gear have the advantages of light weight and simplicity over traditional shock absorber or trailing link arrangements. What they sacrifice, however, is controllability over rough terrain. Beringer Aero seeks to remedy that trade-off with their new Shock Wheel suspension units. Shock Wheels simply bolt on to the leaf spring main gear to provide instant shock absorption and better control. Each Shock Wheel contains two oleo shock absorbers, an axle a Beringer wheel (no tire) and a disc brake assembly, with caliper and disc.

Once the Shock Wheel unit is bolted onto the spring steel gear, the shock absorbers are adjustable with air pressure fed through a Schrader valve. Each valve is readily accessible at the top of the shocks. Then, rolling over a rock in the runway or off airport landing field will a much smaller problem than before. The Shock Wheel units come in two iterations, a Sport Edition (SE) that will be well suited to wheel pants and an All Terrain Edition (AT) meant to accommodate larger tundra tires and inhospitable terrain. Each unit has 3.2” of oleo-pneumatic absorption and weighs 6.5 pounds per side. The units are designed to work on aircraft with gross weights up to 1430 pounds.

Beringer is rolling out the Shock Wheels for the Zenith 701 and the Kitfox line of aircraft at this time. They are working on making them fit other aircraft, including the Vans RV series. You can get more information at beringer-aero.com.

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The $999 IntelliKey is a combination wireless key fob and a control module that is, essentially, inserted between your airplane’s key switch and the starter relay. When the system recognizes the small squarish fob in your possession (and the master is on) it enables a simple illuminated push switch for engine start. Naturally, the setup expects you to have separate mag/ignition switches. Push the button, and the engine turns over. There are also fail-safes to ensure that once the engine is running it can be restarted with or without the fob, and the system is designed to allow engine starts in the event of an IntelliKey failure.

But this is just scratching the surface of IntelliKey’s capabilities. The app can alter functionality that ensures the engine can’t start (airshow mode) and so it can be started without the fob present (for maintenance). Plus, you can use the app to arm the system without having the fob in your possession. You can also wire an ingress light to illuminate when you approach the airplane.

IntelliKey can be wired to the aircraft’s audio system to intercept radio and intercom traffic to be recorded. It’s designed to connect to popular EFISes for data logging.

More information: startyourplane.com

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Well, not Lightspeed. Late in 2022, the company introduced the Delta Zulu headset, which in the bigger picture offers a refinement and several improvements on its familiar over-the-ear ANR headsets. But it also brings some truly new features to the category—features that caused Lightspeed to give the Delta Zulu the moniker of “safety wearable.”

Cough, Cough

A key feature of that safety suite is the DZ’s built-in carbon monoxide detector. If you’ve flown with a CO detector you probably don’t want to fly very often without one—especially if you’ve used one to detect a cabin leak or exhaust-system malady. (And, no, those passive panel dots don’t really constitute state-of-the-art protection.) Lightspeed’s Delta Zulu includes a small CO detector in the ear cup designed to issue an audible warning of abnormal levels. You can turn on the DZ and it’ll do everything you need right out of the box or you can use the free smartphone app (Apple iOS only) to set alarm thresholds and track, in real time, CO levels in the cabin. Within the app, you can set the caution threshold from 10 to 50 ppm (parts per million) and the critical threshold from 51 to 100 ppm. You can have it provide a voice alert with or without a warning tone.

In flight, the DZ’s CO alerting closely followed warnings from a Sentry mounted in the airplane. The Sentry is above and behind the pilot’s head, a bit closer to a suspected point of CO ingress, and so it alerted slightly sooner. (My airplane has a known case of very slight CO intrusion only during the winter when the cabin is closed up; it only happens during taxi and the very start of the takeoff roll. By the time the airplane is doing 60 knots, CO levels drop to zero.) As with the Sentry’s sensor, the one in the Delta Zulu is good for 10 years; Lightspeed says that it can be refurbished at the factory for a nominal cost.

Power Options

As in the Delta 3 headset, which is still available, Lightspeed gives you the option of ship’s power via a LEMO plug or battery power through two AA cells in an inline control module. The Delta Zulu includes a slide-in battery case that can use AAs as well as a separate cassette with a lithium-ion battery. My brief evaluation period with the Delta Zulu prevented me from fully running a battery pack, of either type, to exhaustion but the Zulu 3s I’ve been using for three years have very good battery life from quality AAs. Recharge of the battery is via a new kind of USB connection called UAC. With adapter cables you can charge the device or connect through USB-C, 3.5mm plugs or a Lightning connector for external audio—though the Bluetooth works so well that’s probably what you’ll use most of the time.

Speaking of audio, the Delta Zulu includes an equalizer function it calls HearingEQity. Recognizing that older pilots are likely to have high-frequency deficiencies, Lightspeed created a feature that allows you to listen to canned tones and tell the headset (again, through the app) the minimum levels you can discern. From there, it creates an equalizer curve. The goal is to tailor the headset’s response curve to your own hearing for better intelligibility—and the results are impressive.

Comfort and Quiet

With all the new features, I wasn’t expecting the Delta Zulu to be a better ANR headset as well. But it is. After several flights where I was able to switch directly from the DZ to my Zulu 3, the differences in ANR quality were very noticeable. Simply put, the DZ’s ANR is flat-out more effective, removing more of the low-frequency rumble presented to the pilot. As a result, the headset makes the airplane seem quieter, the ride more serene. I didn’t have many very long flights with my evaluation unit, but the Zulu 3 has proven to be a really comfortable headset. I wear Flying Eyes sunglasses when flying and the Delta Zulu’s ear seals managed them without fuss—the ear seals and headband pads are just soft enough to be comfortable and firm enough to keep the headset under control.

Bottom Line

Lightspeed has taken the Zulu line up a notch with the Delta Zulu—up in performance, features and price. The DZ retails for $1099, $200 more than the popular Zulu 3. However, Lightspeed undercuts Bose’s A20 headset by about $100. The only piece of bad news here is that the DZ’s new control pod is larger (both wider and longer) than the Zulu 3’s, so if you have a mounting solution for your existing Zulu 3, you’ll have to come up with something else. But that’s hardly a reason to resist an upgrade to the Delta Zulu—the CO detector and the HearingEQity features alone are worth the $200 investment, making the improved ANR performance and added app features icing on the proverbial cake.

For more information, call 800-332-2421 or visit www.lightspeedaviation.com.

Photos: Marc Cook and courtesy of Lightspeed.

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Portable satcom communicators are a worthy addition to the survival gear when cell coverage quits. Press the SOS button and a response center will dispatch first responders to the rescue. But today’s portable locator devices, or PLDs, take the rescue process to a better level with text capability through an app. Staying in touch with responders while they find you could mean a better survival chance. In flight on an active flight plan, there’s a healthy level of third-party tracking capability, which could automatically trigger search and rescue if you’re overdue.

Serving double duty outside the aircraft for boating and adventure sports, the current-gen PLDs have matured and offer two-way communications via text and email, plus they have Bluetooth. All require a satellite subscription data plan, and while the names SPOT and inReach are familiar, and most do the same things, choosing one may not be easy. Here’s a primer to kick off the shopping.

How They Work

Think satellite smartphone. Short messages can be texted or emailed to your contacts, and custom predefined messages with your location can be sent to a predefined contact list. The devices drop electronic breadcrumbs, with refresh frequency based on the data plan.

With GPS lat/lon included in the tracking and SOS messages, the search area can be narrowed—a good thing. A 7.5-minute tracking resolution at 120 knots indicated airspeed delivers a search area of 706 nautical miles, and reduced to 2.5 minutes, the search is narrowed to 78.5 nautical miles.

Two-way messengers have a dedicated telephone number and email address. When you send a message from your smartphone, the recipient will see either the email address or telephone number of the PLD—not your smartphone’s email or telephone number. Pro tip: Include your PLD’s telephone number and email address in your smartphone’s email signature, and share the device’s info with your contacts so your messages don’t end up in their junk mail folders.

All the PLDs we focused on, with the exception of SPOT Gen4, have lithium batteries and USB charging ports. Battery life will be impacted by factors like sky obstructions, air temperature, tracking interval and battery capacity. All brands have dedicated apps. We suggest trying them all at AirVenture or Sun ’n Fun for a feel of the interface and hardware. Some countries (India, China, Iran, North Korea, Thailand, Vietnam, Cuba and Russia) prohibit these devices, and yours could get you fined and jailed.

Satcom networks are growing. There are 4852 satellites in orbit, up from 2200 in 2020. First- and second-gen low Earth orbit satellite networks (LEO) deliver connectivity upward of 1.4 Mbps, making LEO perfect for voice calls, text messages and short emails. PLD manufacturers purchase satellite connectivity from provider Iridium on a wholesale basis, add margin and bundle their services into their service plan subscriptions. The SPOT product is unique as a division of the Globalstar satellite network.

Globalstar invested big starting in 2010 on its second-gen LEO network, which doesn’t provide worldwide coverage. If ferrying, keep in mind there may not be a usable signal over the poles, the high Arctic and Greenland.

The Iridium satellite constellation is made up of a fully meshed network of 66 cross-linked satellites that orbit 485 miles above the Earth. In 2019, Iridium upgraded the network with next-gen satellites. Traveling at more than 18,000 mph, each satellite makes a full orbit of the planet every 1.5 hours. That means one passes overhead every 10 minutes, and there is generally worldwide coverage.

No matter the network, consider limitations in reception because direct line of sight is required. Obstructions (buildings, trees, your own body) can block the line of sight, which can slow transmission time for your messages. They need a good shot of the sky, and close to the aircraft’s windshield is usually the best location.

Bivy Stick

In 2021 ACR Electronics acquired Bivy, adding subscription revenue to ACR’s business model. The Bivy Stick’s shape is unique and has a lithium-ion polymer 1400 mAh battery with a USB-C port and includes a USB-C to USB-A cable. Charge time is between two and four hours, depending on power source. To preserve battery life, Bivy hibernates for 15 minutes and automatically wakes up to check for messages (then hibernates five minutes after checking for messages). The Bivy Stick, measuring 3.19 x 1.57 x 6.77 inches, comes ready to use with any GoPro mounting system, using the provided GoPro adapter.

During our testing, we found the waterproof switches difficult to press with a finger. Bivy recommends using a dull instrument like the eraser end of a pencil to press the buttons—not the best in an emergency activation. The next production run, we’re told, will solve the issue.

Bivy uses message credits as the basis of the subscription plans. The Basic and Plus plans have 20 and 60 credits per month (respectively). Each message, standard weather report and location share is one credit. With Bivy set to two-minute tracking, five credits will be charged every hour. Unused credits will roll over to the next month. Without an unlimited plan, overages—including spam and unsolicited messages—are charged at 50 cents per message. If you get spam messages, let the company know about it for a credit.

Garmin inReach Mini 2

Garmin’s latest-gen Iridium-based inReach Mini 2 is $399. For now, Garmin said the original $349 Mini will stay in the product line along with the new Mini 2, which works the same way and has a tight Bluetooth interface with the Garmin Pilot and Garmin Explore apps, plus it interfaces with some Garmin wearables and portable navigators. It weighs 3.5 ounces and in our testing, we found the Mini’s receiver performance good. There are good reasons to spring for the Mini 2 for the extra $50. It has a better—not bigger—display (0.9 by 0.9 inches, with a 176 by 176 pixel resolution, versus the 128 by 128 count on the original Mini) and an IPX7 waterproof case. The inReach Mini series has a simple control set with a total of six buttons, and the Iridium satellite antenna is nicely molded into the chassis. The control set is logical and durable.

Free-form messages allow you to type as you wish directly from the Mini and also from the Garmin D2 Charlie aviator watch, plus from some Garmin Forerunner and Fenix-series watches. It connects wirelessly with Garmin’s ANT+ technology, which is also used for many other Garmin products.

When sending messages from the Mini, you scroll through the functions using the up and down keys on the right side of the case. To type out a new message from scratch, scroll through the menus and select the Write Message option (with the OK key). Typing a message can be slow because you pluck each character (including space and backspace/delete)—one at a time—from a vertically scrolling alphabetical list on the far right side of the display. Once you have your message in place, hit Send and it’s off. You’re limited to 160 characters per message. Forget about photos, although you can post a message to social media, including Facebook, Twitter and to your MapShare page.

You can also receive messages, of course, and the device checks for new ones at predefined 10-second intervals. You can customize the time intervals, but the more you update, the more battery life you’ll eat. You can manually check for new messages, but the most frequent two-minute interval is only available on the premium subscription plan.

SPOT

SPOT Gen4 is the company’s latest one-way PLD, launched in August 2020. On the Gen4, SPOT moved the Micro-USB port to the battery compartment. There’s a tradeoff. While this design change allows the unit to obtain IP68 water-resistant certification (up to 6 feet for up to 30 minutes), it requires the battery cover to be removed to connect it to an external power source like a USB power bank or aircraft panel power.

The SPOT Gen4’s physical design has changed: It’s slightly larger with a rectangular (versus oval) shape. The chassis color was changed to slate grey with orange accents. The SPOT Gen4 uses four Energizer lithium AAA batteries, and there’s a built-in motion detection circuit, placing it into sleep mode if no motion is detected. The motion detection can be used to monitor your aircraft while parked, sending an email/text when it’s moved.

Some pilots have found that SPOT devices will create interference with aircraft GPS systems. SPOT advises to keep the unit away from aircraft navigation systems or GPS antennas. That may not be easy in some aircraft. [Our experience at KITPLANES® is that the Gen4 is generally benign to onboard GPS receivers when in the passive mode, but the signals it issues when in the tracking mode can swamp even the best GPS receivers, so for that reason it’s advised to avoid using the track feature in flight. —Ed.]

SPOT X, launched in May 2018, is a two-way communicator and while the most current model has Bluetooth, SPOT sells refurbished models without Bluetooth at a $50 savings. Unlike the other PLD devices, SMS and email addresses must be added to the device either through the app or website. SPOT X cannot use the contacts on your smartphone’s native contact list, and it does hold up to 70 contacts and/or contact groups.

SPOT X sports a sunlight readable 2.7-inch screen, weighs 7 ounces and is IP67 waterproof rated. The keyboard is backlit and we found it easy to type with. The kit includes a Micro-USB cable and AC/DC charger with a full charge achieved overnight. The rechargeable battery provides 240 hours of battery life when in 60-minute tracking mode.

A rocker-style cursor pad called the Directional Pad allows the user to navigate between menu pages and to make selections. The key in the center of the Directional Pad acts as the Select key.

Working alongside SPOT X is the SPOT App for iOS and Android, which can be used to send and respond to messages using your smartphone. Those with smaller fingers should find that typing on SPOT X’s keyboard is not an issue. But for folks with larger fingers, we think the app might be more convenient. To date, SPOT said its devices are responsible for over 8000 saves.

Zoleo

Perhaps an unfamiliar name to many, Zoleo is a joint venture between Beam Communications (founded in 2000) and Roadpost Inc. (founded in 1991). Beam manufactures the Zoleo hardware, while Roadpost looks after sales, marketing, billing, Iridium wholesale activities and technical support.

Zoleo’s PLD has an IP68 water-resistant case when submerged to 4.9 feet for 30 minutes and it weighs 5.3 ounces. It uses a Micro-USB Type B connector to recharge the lithium-ion battery, which has a 200-hour battery life based on checking messages every 12 minutes. It has GPS and GLONASS navigation, plus Bluetooth that supports one connected user at a time.

Optional accessories include a cradle kit for attaching it to a GoPro style mount, and the device has a belt clip insert and camera mount insert, a universal mount kit that includes a USB vehicle charger, RAM suction cup and a float designed specifically to keep the Zoleo device afloat when placed in water.

Zoleo’s app supports both iOS and Android devices, but is really built for smartphones. The app will run on a tablet, but only in portrait mode, which might be an issue for use in the cockpit. The number of characters in a message is limited to 160 in SMS/texts, 200 in emails and 950-plus in app-to-app messaging. The app supports English/French, with six other languages in the works. The app has a nifty Find My Device feature that when activated causes the Zoleo hardware to initiate an audible signal and flash the LEDs purple.

To economize satellite communications costs, the Zoleo app is able to send and receive messages in three ways: natively over the Iridium satellite network, using your smartphone’s Wi-Fi connection or using your smartphone’s cellular connection. Technically this is called least-cost routing. Sending a message over the app will use the satellite network if it cannot send a message over cellular or Wi-Fi—a definite billing advantage.

By default, the Zoleo device will check for new satellite messages every 12 minutes, supporting settings for 12, 24, 60 and always on. However, the less often the device checks for messages, the longer the battery will last.

Pricing

Pricing for the mini PLDs evaluated are similar. There is a one-time hardware acquisition price, monthly or annual service fees, optional services, hardware replacement fees and message overage fees. All of the PLDs include 24/7 SOS monitoring and alerting. All of the vendors have different subscription levels, delivering different amounts of messages before overage costs are applied.

SPOT Gen4 is the least expensive, with a total first-year cost of $313.34. Garmin’s inReach Mini 2 is the most expensive, with a total first-year cost of $1029.34 (unlimited plan). Frankly, the complexity of the plans creates an eye chart suitable for your next aviation medical exam. And, don’t forget that the plans auto-renew every year and are automatically billed to your credit card. There’s also tax on all plans.

Garmin’s bare-bones Safety plan is the company’s cheapest one, using a pay-as-you-play approach to pricing. At $11.95 per month, the plan includes unlimited SOS and preset messages, with 10 text messages per month. However, location requests and send/track points are $0.10 each, with message overages at $0.50 a message. Garmin offers a Freedom plan, where the service is billed monthly during the months that the service is used. The Freedom plan’s monthly cost is more expensive than an annual contract and has an annual charge of $34.95. Service can be suspended one month at a time.

Zoleo’s plan can be suspended for $4 per month, and will not transmit messages, including SOS. Zoleo has a fair-use policy, allowing it to limit usage or suspend your service if your actual monthly usage greatly exceeds average customer usage.

All of the PLD vendors offer an optional crisis assistance plan delivered by the emergency response organization that they are aligned with. These services are similar in nature, typically including travel, medical and SAR assistance.

Pro tip: Read the fine print of the provider’s terms and conditions.

Conclusion

These mini satellite communicators all do what they’re intended to do, which is maintaining the cyber umbilical cord. Aside from SOS and tracking, they fill in the gaps left by your cellphone at higher altitudes and in the wilderness. As they say, an ounce of technology is worth a pound of cure.

How you choose will depend on your taste of the device’s app, the hardware’s size, control set and data plans. We’re impressed with Garmin’s Mini interface capability, the control set on the Spot X and the small stature of the BIVY Stick. We’ll see how they all hold up after a year in our long-term test pool.

These stories originally appeared in our sister publication, Aviation Consumer.

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Taildragger pilots all eventually are confronted wit the need to lift their aircraft’s tail by its tiny little tail wheel to perform service. Somehow, they have to lift the whole shebang without pranging the elevator or rudder and then balance the tail wheel on a sawhorse or some other equally rickety object. What could possibly go wrong?

Enter Tail Mate, a specialized device designed to easily lift and securely hold tail dragger tails. Originally invented a few years ago, the Tail Mate never reached production. Flyboys Accessories obtained design and production rights to the Tail Mate and its President, Blake Frazier, proceeded to enhance and improve the design. Formerly, the Tail Mate utilized a winch and cable to lift a tail wheel cradle. Frazier redesigned the unit to employ a safer and easier to use lifting strap, as well as a stronger vertical lift component. Finally, Frazier made the whole unit more stable to hold a tail while at the same time making it easier to move with the tail wheel locked in place. Flyboy Accessories hopes to begin production on the Tail Mate soon.

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