Helite e-Turtle 2 Airbag Review

• About Helite
• Sayings I Appreciate
• Construction
• Testing the ET2’s Battery Life to Verify Helite’s Claim of 25 hours of Operation
• Triggering the Vest
• Updating the ET2’s Algorithms
• Storing the ET2 (or HT2)
• Conclusion
• Specs
• Important Links / Where to Buy

I reviewed the analog version of the Helite Turtle 2 (HT2) vest in August of 2022 after wearing it from April of 2022. Since then I have never ridden without it. In my piece about Why I Wear Safety Gear, I detail my reasons. The primary difference between the HT2 and the just released in the USA, e-Turtle 2 (ET2) is the elimination of the physical tether on the HT2 which is replaced by an electronic trigger on the ET2 called the Computer Display Unit or CDU. Don’t ask me why it’s called a display unit, I didn’t name the thing!

About Helite

Helite was founded in 2002 by Gérard Thevenot, a French engineer who specialized in fluid mechanics and was passionate about light aeronautics (ULM, hang gliders, paramotors). The high accident rate in these sports led him to look for solutions for pilot protection, and so a first patent was filed for individual protection airbags.

As airbag technology applies to all high-risk activities, Helite has become an expert in this field, dedicating itself exclusively to the development of individual protection systems. Helite airbags are already used in a wide variety of fields such as motorcycling, horse riding, cycling, health, aeronautics, and industrial work; they are also highly appreciated in top-level sports.

From Helite’s website:

Our Ambition:

Helite’s mission is to make the world safer by developing new intelligent solutions to protect people in their sports and daily activities. Our special recipe: innovation, technology, and simplicity, all made in France with our touch of authenticity.

Our R&D Approach:

From the idea to the design of an airbag, a long process and many skills are involved. In this sense, our airbag technology is still validated by numerous prototypes and crash tests.

Sayings I Appreciate

“Just think how happy you would be if you lost everything you have right now, and then got it back again.” — Frances Rodman

“You don’t get something for nothing.” 

To me, these both apply to almost everything I do in life. But in the context of the vest, it’s especially poignant. Had I not worn great safety gear, some of my track crashes would have resulted in me losing things like bone connections, vertebrae, dermis, or worse. Had I lost any of those things and then through some miracle they were restored, YES I’d be damn happy! DUH. Because I chose to wear great gear, I didn’t have to face ‘losing something’ since those body parts never left…aka Happiness. And sure things I choose to wear while riding may be hot, bulky, etc., but I’m trading some comfort for protection. Second-chance bulletproof vests are both hot and more uncomfortable than a simple t-shirt. If I was a law enforcement officer and given the choice of which to wear, I know which I’d choose. You never get something for nothing and I’m really happy to retain the important things in my life through the choices I make. But everyone is different.

Let’s move on to the features and performance of ET2.

Construction

• Interior textile 3D mesh for maximum air circulation
• Vest 100% polyester 600D textile 
• Airbag 100% polyurethane
• Exterior pocket for small objects such as credit cards or cash
• Reflective stripes on the back for added visibility
• Soft neoprene collar for better comfort around the neck
• Comfortable and light allows full body motion
• Multi-sensor technology enables 360° detection and covers a wide range of accidents: from 0km/h, at low speed, and any angle of impact
• Fork sensor (optional and sold separately)
• The system can be reactivated in 2 minutes to change the e-cartridge, no tools are needed
• TURTLE technology with SAS-TEC 1621 level 2 back protector
• 100% autonomous system
• 25 hours of battery life (USB charging) – Verified by my own testing
• Adjustment straps for a fit over any motorcycle garment
• Big protection volume: between 17L and 28L depending on the airbag size
• Water-resistant
• CE Certified Airbag System

The back of the vest incorporates vertical reflective accents along with the Helite logo which is reflective when exposed to lights like headlights. The small Helite logo on the left chest area is also reflective.

Please note that Helite sent me an XL e-vest which is too large for me. I wear their L in the tethered version and it fits me well. Sitting on my bike the tail of the vest is too long in an XL size, as is the overall size.

It includes a SAS-Tec Level 2 back protector which can be removed by separating the Velcro seam on the right side of the vest (as you are facing the vest with it on a surface buckle side up) and then sliding the back protector out from the vest.

The stitching of the vest is excellent with no fraying threads to be found anywhere on the garment. On the left side of the chest is a small zippered pocket covered with a Velcro flap. The pocket is relatively small and can hold currency, credit cards or ID, and a key or two. I’ve included photos of a ruler in photos to illustrate its size.

Underneath the pocket is another Velcro flap that houses the three adjustment straps to custom fit the vest to the person and jacket it’s worn over. On the HT2, both the right and left sides of the vest front contain straps to adjust the fit. On the ET2, only the left side contains adjustment straps. Because only one side can lengthen the straps, I would like to see the middle and upper adjustment straps increase in length. Examining the straps shows that the bottom strap’s length extends the entire span of the matching Velcro portion. The adjustment straps above it do not. This is the only area of construction that I have issues with on this vest.

I would choose to store an extra CO2 canister in this area. Having fallen with my HT2 vest. I know firsthand that having the extra canister close at hand is key when being mentally rattled just after a crash.

The right side of the front of the vest houses both the Computer Display Unit (CDU) that contains the sensor, battery, and the CO2 canister inside a zippered pocket.

Under the right zipper is the CDU on the left with two wires coming out. One is a female 5mm x 10mm charging cable, the other is the CO2 trigger wire. The 5x10mm pigtail is a standard size utilized by many battery makers.

1.  If the CDU trigger wire is not connected to the CO2 canister wire and the CDU is powered on, a red light will flash alerting you that the CO2 cartridge is not connected. 
2. The CDU cannot operate while the USB power wire is connected and the CDU is being charged. So if you’re hoping the vest can be charged whilst riding, nope it cannot. But fret not, I explain how I’ve tested the battery life later in this article.

Here is the CDU removed from its elastic mesh pouch.

The back side of the CDU has its information label that contains the serial and model numbers.

The CDU wire connection is shown with the female tab with the locking tab and the male portion with the locking pin. The image shows the connection fully and properly seated.

A close-up shot of the female portion of the CO2 canister’s CDU connection reveals two separate channels along with the locking tab at the top.

Testing the ET2’s Battery Life to Verify Helite’s Claim of 25 hours of Operation

I’m a bit of a stickler about battery life claims. So I tested the battery life by removing the CDU from the vest and attaching the CO2 wire to the CDU WITHOUT A CO2 cartridge attached to the wire unit. I didn’t want to chance the CO2 going off in the middle of the night.

The top canister shows the CDU wire unit disconnected from the CO2 canister. That’s the one I plugged into the CDU. I strapped the CDU to a simple fan with the CO2 canister’s wire attached and let it run for 25 hours. The small vibrations from the fan ‘tricked’ the CDU into thinking there was constant movement. I was very impressed that the slight vibrations from the fan provided enough movement to register on the CDU. Even though I stopped the test at 25 hours, I feel that the internal battery would have lasted another hour. I didn’t want to stress the battery by taking it lower than designed. I do not doubt that the CDU battery sleeps after 45 seconds of no movement. This makes the actual life of the battery while riding even better. Stop to eat, piss, etc? Take the vest off and either leave it on a chair where you won’t be wiggling it and it will sleep while you do your business. It is a brilliant piece of technology.

At this point, I charged the CDU at the recommended 5v (4.99v for those who LOVE TO split hairs) and it took 3 hours and 47 minutes to fully charge the battery, indicating full as per the user manual when the CDU light turned green.

The female 5×10 mm USB charging port is attached to the CDU. The male portion of the USB charging cable is supplied with the ET2.

E-Turtle2 Triggering information (information supplied by Helite USA)

• • Detection time of the CDU sensor in the airbag vest: 62ms  
  • Detection time for non-Helite autonomous airbags: 95 ms

• Detection time of the SDU sensor on the motorcycle fork: 31 ms Please note that the fork sensor is not yet available in the USA due to supply issues and pending FCC approval so the ET2 will NOT work with the EU fork sensors. They are a different frequency and will NOT pair with the USA e-Turtle 2 vest.

Mechanical Turtle2 (information supplied by Helite USA)

• Inflation time: Very fast in less than 100 ms (faster than the blink of an eye) before ground impact.

The 25-hour battery life got me thinking about multiple long-day rides…bike camping to be specific. A six-day, five-night trip riding 8 hours a day would theoretically deplete the CDU’s battery in three days. What I plan to do is take my little portable USB battery along with me. After three days of riding and I’m going to assume I’m not near AC power, I’d simply plug the CDU into my battery to charge it at night. Then plug my battery into the USB charge socket on my bike as I ride during the day. Using this method I could keep the CDU charged as long as I’m out on the road. I have also used a small solar panel that easily fits in my top box to charge my little battery…..

OK, I got distracted, so let me move on to how the CO2 cartridge is deployed.

Triggering the Vest

Since the ET2 utilizes a completely different triggering mechanism than the HT2, no spring forces a sharp pin into the CO2 canister to release the gas. Instead, it uses a small ‘nib’ which releases a small explosive charge which forces a rupture pin into the canister thus releasing the gas. After disassembling the CDU and CO2 canister, this process is very apparent.

The CO2 canister, the CDU wire removed from the canister, the view looking straight down into the CO2 canister with the CDU wire removed. The nib is electronically triggered by the CDU and finally, the nib’s small ballistic charge forces the pin down rupturing the cartridge and releases the CO2 gas. This short video illustrates how this functions.

Here is how the ruptured CO2 cartridge appears after being pierced, along with the nib that electronically initiates the penetration.

This is the connection where the CO2 canister is inserted. It’s important to note that a good seal must be achieved when screwing down the canister during replacement.

It’s also important to be cautious when screwing the CO2 canister into the ET2’s receptacle so as not to allow the wires to twist and tangle. Simply holding the canister and the housing receptacle allows the wire to turn as you are tightening the canister into the vest.

Because I have first-hand experience replacing a CO2 cartridge on the HT2 mechanical vest, immediately after a fall(s), I can appreciate not needing any tools to replace the canisters on the ET2 vest. Even though a cartridge replacement is relatively easy on the HT2 when adding in the emotions of having just fallen, making anything more simple is a welcome feature. The canister replacement on the ET2 is very easy.

Here is a video of the ET2 being remotely deployed by using a wireless trigger Helite sent with the vest, along with photos of how the vest looks inflated.

I really appreciate how the Helite air chambers cradle my spine area when the vest is deployed. It gives me a real sense of security, especially since a level 2 back protector resides on the exterior of the back air chambers. Helite’s data for the inflation time of the e-Turtle is listed at 62MS versus the HT2 tethered version at 100MS. This is a complete seat of my pants (or chest) ‘feeling’ but when I deployed the vest with a Helite-supplied remote control trigger, I COULD FEEL THAT IT INFLATED FASTER than the HT2. I was shocked at just how fast it inflates! Can I feel 38MS? I would not have mentioned it if I couldn’t feel the difference, that’s for sure.

“Really Mark, who gives a good hot sh!t about all of this anyway? I just care that it works.” Yep, I get that, but I’m a guy who likes to know how sh!t works and I’m the one writing this review. I often marvel at great design and engineering and ignore those who do a sh!t job. I explain why I’ll buy, trust in, and wear Helite vests in my Conclusion section.

Updating the ET2’s Algorithms

Helite’s e-Turtle 2 has been selling in Europe for many years and the FCC just recently approved the CDU’s radio frequency for the USA. As such the development and continuous updating of the CDU’s algorithms have been ongoing and incorporated into Helite’s CDUs for years. If further updates are implemented, Helite will notify customers and they have the opportunity to send their vests in which would then be updated. The only charge is shipping the CDU to/from Helite, no charge for the software update.

Storing the ET2 (or HT2)

In my previous HT2 review, one of the commenters asked if the vest could be stored in panniers or other carrying methods. I was not able to illustrate how since the review was already published so I will discuss this later in this article. I can show you how the vest can be rolled up with the back protector removed. I have folded the back protector like a taco when I want to store it in a tail pack but doing so length-wise. My hand is shown for size reference in this photo. It easily fits in this tail pack I own when it’s expanded. I can ‘almost’ fit it in there when the tail pack is not expanded, but I don’t want to force the back protector into an overly contorted shape.

Since my review of the HT2, I purchased a new bike, a 2022 Ducati Multistrada V4S which came with side panniers. I can store the HT2 vest into the right side pannier, the much smaller one due to the clearance needed for the exhaust.  I placed the ET2 into the right side pannier without needing to remove the back protector or the need to contort the vest in any extreme way. Of course, everyone’s available storage is different, but I hope this helps you decide if it will fit in your luggage. And before having ANY LUGGAGE. I use to run a chain through the sleeves of my jacket, the chin bar of my helmet, and through the rim of my bike to lock things up. No not the most elegant method, but I did this at an untold number of World Superbike race events at Laguna Seca without any issues. Just adding the vest would be no big deal. I never use a cable, only a chain. I can cut through the cable, even thick ones with side cutters…easily.

Conclusion

Having used an HT2 since April of 2022 and experienced it firsthand in crashes, I won’t ride without one. In my review of my Ducati Multistrada, I explain my falls. In the time I’ve used one I have not had an issue removing the tether after a ride, but instead FORGETTING to tether myself to the bike. Having those senior moments would be eliminated with the ET2. Charging? Forget to charge? Not likely for me. I’m religious about charging my phone, my portable air compressor for the bike, etc. I’d simply run the charging cable to where I hang up the vest and plug it in when I return home. The ET2 has been available and used in Europe for years now, Helite had updated the firmware to incorporate new algorithms.

They notify dealers when new algorithms are available so customers can choose to have their units updated. All that’s needed is to send the CDU to the dealer where you purchased the vest or to Helite. No subscription fees, and no need to send the unit in if it gets inflated. Sure if you crash hard enough where the fabric is compromised, send it in. The E-Vest Replacement Canister is more expensive than the canister replacement for the HT2, but even at $85.00 to me, that’s a bargain since replacing one does not mean sending the vest in, simply screwing out the old and replacing it with the new one.

I may buy two, one tethered, and one electronic. When my gf rides with me, I want her to wear a Helite. And if by chance I forget to charge the ET2 (unlikely but possible), then I have the tethered one to ride with. Expensive? Compared to what?! Broken ribs? Broken neck or clavicle? Ruptured vertebrae? Missing work? Depending on someone else to take care of me because I chose to not wear something!? No effing way, I’m old school. I go back to one of my favorite sayings, “Just think how happy you would be…” Reference my piece, “Why I Wear Safety Gear” and you’ll understand or not. To each their own. I’m just damn happy someone developed this incredible piece of kit, in the same way, I’m happy that Bell developed the Star full-face helmet back in 1968 and the off-road full-face in 1971. Yeah, some bitched about those too when they were released. Some still do….it’s called Natural Selection.

Specs

• Manufacturer: Helite
• Price: (When Tested) $679-$799
• Colors: Black, Hi-Viz Yellow
• Sizes: Adult X-Small, Adult Small, Adult Medium, Adult Large, Adult XL, Adult Large+, Adult XL+ 
• Review Period: January 2023

Important Links / Where to Buy

• Helite USA
• Revzilla

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