A Conversation with Lezyne

By Stan Purdum
Those of you who read Road Bike Rider regularly will likely recall that recently I posted two articles about my purchase of the Lezyne Radar React System. That system consists of a rear radar unit with an LED red light and a headlight, which, in addition to the forward-facing LED light, has a rear facing white lens. That lens, when paired with the radar unit, glows red and emits a beep to alert the rider to traffic coming from behind.
A good video describing the Lezyne system can be found below. It’s from GPLama, which is the alter ego of Shane Miller, a popular Australian reviewer known for his in-depth analysis of cycling technology and gadgets. He’s quite positive about the Lezyne system.
I have now ridden twice using the system and am pleased to report that it works as advertised. I too now recommend it as an effective radar system.
However, you may remember that my complaint about the system is that the radar unit is designed so that the only means of mounting it is by a stretchy strap to your seat post, which makes a problem for people like me who, because of a sizeable under-the-saddle bag, have no seat post space available for the radar unit. The design of the unit rules out any of the third-party under-the-saddle hitches currently available.
In fact, even Miller, positive was he is about the Lezyne system overall, does say, after showing the provided stretchy straps and shims to accommodate various shaped seat posts, “It’s not the worst mount that I’ve used for radar, but this is the only radar that I can recall where the strap mounts directly to the radar itself; there’s no quarter-turn mount. I’m not really a fan of this ….” (If you want to hear it yourself, Miller’s comment comes just after minute 5 in the video.)
So, yes, the seat-post-dependent mounting arrangement for this system limits how many riders can easily use it. Thus, my first article on this topic was a request for suggestions from you RBR readers regarding alternative ways to mount the Lezyne radar unit. My second article was a description of a not-very-handsome hack I had come up with to attach the radar unit from under the saddle.
But following that, I decided to contact Lezyne directly for their input, which I did, via email. In response, two things happened. First, Lezyne added a comment of their own below my first article. They started by quoting my line from my article that said, “And if someone at Lezyne is reading this, how about coming up with a classy solution?”
They then added, “We read it! Your article has been shared internally with the product team. We are really good at classy solutions. But other than a 3rd party 3D printed adapter, there’s currently no easy way to attach to your setup. Shoot! Thanks for the article!”
The second thing was that Dillon Clapp, who is Director of Content in Lezyne’s Media Relations department, sent me his direct phone number and invited me to call him, which I did.
He told me of the company’s belief that their radar is on par with the best radars available, a claim I don’t disagree with after using it on the road. He also mentioned the company’s notion that most riders do not have their seat post area blocked and thus could use the direct-to-seat-post mount arrangement. I’m not in a position to know about the majority of riders, but I am aware that such is not the case for several of my cycling friends. But he went on to say that the current Radar React System is the first generation of the product, and there will likely be generations two and three. (He indicated that he could not reveal what plans for it might be in the works, which I understand, due to R&D being a competitive arena in the bike gadgetry industry.)
I told Dillon that if Lezyne did come out with another mounting arrangement to let me know so I can announce it in RBR. He said he would.
Just an update on my homemade mounting hack: I am now on version 1.2. I cut about an inch off both of the “arms” so I could move the post closer to the saddle. This also made the MacGyver device look less like the handles of yard shears. And I wrapped the wood dowel post with friction tape to reduce the tendency of the radar unit to slide around a bit on the post.
I told Dillon I’d be writing this article for RBR, and he said some Lezyne people would look at it when it goes live, so that if you readers post any questions in the comments section about their system, they will respond to those in the same section.
Stan Purdum has ridden several long-distance bike trips, including an across-America ride recounted in his book Roll Around Heaven All Day, and a trek on U.S. 62, from Niagara Falls, New York, to El Paso, Texas, the subject of his book Playing in Traffic. Stan, a freelance writer and editor, lives in Ohio. See more at www.StanPurdum.com.

I disagree with this radar technology, I guess if you’re a tech geek it might be “cool”, but it is a very unnecessary and expensive item.
For less than $20 you can buy a small mirror that attaches to your sunglass frame, these in my opinion from trying the other types, works the best, there is no mirror shaking and you can move your head to get a different view. Take A Look cycling mirror is what I have been using for years, and it works great. Just like driving a car you are supposed to be using your mirrors, that’s all you’re doing with a mirror when riding a bike, using the mirror, it’s not rocket science, we’ve been doing the same thing in our cars for 100 years!
Then buy a bright 300 lumen or so rear taillight, these will cost you under $40, check out the ones that NiteRider has, they use a better Chinese OEM battery that has a longer service life battery than Lezyne does typically. The Lezyne battery will last 3 to 5 years before it degrades in the length of run time, without knowing for sure which OEM battery they spec’d the light with the range is about on par with how Chinese OEM batteries last.
Some lights, like the Exposure, has a more rear concentrated beam instead of a spread out beam, the concentrated beam is better for daytime use, so a 120 lumen Exposure Tracer light will show up the same or better than a 300 lumen spread out type of beam pattern, those spread-out types are better for night use.
So, I just saved someone $110 the first 3 to 5 years, and more in proceeding years since the mirror doesn’t need replacing.
The longest lasting service life rear taillight is the Exposure, they use Japanese made batteries which are the best in the world, these batteries can last 8 to 12 years depending on how you charge a battery, vs 2 to 5 years for others.
To maximize battery life, try not to let them drop below 30% charge, 20% at the most on a regular basis; then charge them up to about 90% which is nearly impossible to do, so the simplest thing to do is not leave them plugged in overnight. Also do not charge any battery that has been in use right away, wait an hour to charge, the same is true after you are done charging wait an hour to use it.
Frank, I can save you the $20 for a mirror. Just turn your head around and look! Seriously, I’ve tried mirrors but because I wear Rx sunglasses (with lens inserts), I could never make them work for me. I always found my ears to be the best first line of defense, then turning my head for a look was next.
I actually started using a radar unit this year and like the ease of use. I now can hear and “see” cars approaching without having to turn around for a look (though I still do look on occasion). I think NOT having to look back (whether through a mirror or otherwise) improves safety a bit by keeping your focus up the road. I equate radar units to good backup cameras in cars. I no longer use my rear view mirror for backing up, because the camera is simply far better.
Finally, for a non-“tech geek,” you sure seem to know a lot about batteries and recharging cycles! 😀
I commend Lezyne for responding to your product review. Sometimes I wonder if product developers fail to perform adequate testing themselves as users to correct shortcomings before release to the public. I am currently writing this from a “resort” on a beach front. The walk-in shower has a floor pan with a short lip and the shower is contained only by a sheet of glass on the shower head end. Water always gets out on the floor on the open end of this design. I’ve also experienced this at some other hotels before. Over time, the water degrades everything it gets on outside of the shower pan. I always wonder if the manufacturer ever used their own product. I am very supportive of product improvement as tech and learning progresses over time.I just wonder how products are so rushed to market that developers overlook basic requirements that can be fixed for little to no additional cost. Lezyne has good products and I’ve bought some. But I think it whiffed on this one. May short people will give them a Mulligan with a free mount if they write Lezyne and reference this RBR review.
Thanks for the comments!