Lezyne's CNC Tubeless Drive Pump has a Secret - Pond Beaver

Apr 13, 2020
by Mike Levy  


Are you the kind of rider who heads off into the bush with nothing but blissful ignorance in your pockets? Or do you carry every tool you'd ever need on-trail and a bunch you don't? I mean, you can probably leave those cone wrenches and mini-espresso machine at home... Somewhere in the middle of parasite and doomsday prepper is the responsible rider with a pump strapped to their bike 24/7. Just in case. Lezyne's new CNC Tubeless Drive mini-pump has all the bits you'll need in those just-in-case moments, as well a bunch of features to make the job easier.

The aluminum mini-pump uses a hose, which lessens the chance of you damaging a valve stem while rushing to pump your tire in front of impatient friends, and a there's a small button that, when pressed, releases built-up pressure so that the thread-on chuck unscrews without taking the valve core with it. I've always preferred thread-on chucks for the better seal they can provide, but hated how the core would sometimes come loose; this should fix that. It's also a mountain bike-specific, high-volume pump that moves a lot of air quickly until you reach 30 psi, which is more than enough for most of us.

If you'd rather skip the pumping and get back to the riding sooner, there's a 20-gram C02 cartridge hidden in the handle, along with the inflator, to speed things up. Lezyne has also found room for a bunch of tire plugs and the stabber thingy to install them. The CNC Tubeless Drive mini-pump is 170mm / 6.69” long, is fully rebuildable, and will cost $79 USD when it's available.


91 Comments

  • 39 10
 Lezyne's threaded valve chuck is hyped on COVID19, knocking it out of the respiratory plague top spot. No amount of clever CNC'd aluminum modular hidey-holing can erase the frustration of that persistent pestilence. Can't stand it. Hate that I have three of them!
  • 46 8
 JFC the amount of valve cores I've had come out using these Lezyne pumps...you spend 10 minutes jerking it on the side of the trail...get it to a place where it might be okay to nurse down...unscrew and your valve core comes out...I guess it made all the jerking it worth it as you're back to square one..a flaccid tire.
  • 12 0
 @MikeyMT: don't stop...
  • 49 14
 We're not happy until you're not happy - It's what we live for! /s

In all seriousness, a thread-on connection provides a much more secure and long lasting connection than a press fit or clamp connection. As long as your valve cores are properly tightened and the pump isn’t white-knuckled on to the valve you shouldn’t have any problem. When you’re finished pumping, our patented ABS button will release the backpressure within the pump system to relieve the pressure from the valve.
  • 33 11
 @Lezyne: Sorry guys, gotta disagree with you on this one. I'm pretty meticulous about my setup, and your pumps still have a nasty habit of pulling my valve cores. A latching end like on my Silca Tattico pump works much better, is faster (like 10x), and has never removed my cores. I'd love to give this new pump of yours a chance, but there is a 0% chance I will while it still has your thread on end.
  • 11 2
 @Lezyne: Hey guys...I have three of your pumps...they are the best out there, little question about that. Floor pumps..you guys got it nailed.

But I simply disagree on this callout about the small backpack pumps I've used/own. they are notorious for pulling out cores. The screw in is much better just like you describe but something is not working at least on the small pumps of yours that I have. I never have had this happen with the floor pump FWIW

Figure out how to take the floor pump fitting and get it on these mini pumps and you're golden.

Until then...CO2...which is a bummer as its such a planet killer.
  • 13 0
 @ratedgg13: If you're OK with an O-ring connection, any of our pumps can be adapted with this: ride.lezyne.com/products/1-rp-presta-v1ny04
  • 37 1
 @Lezyne: get out of here, it's too uncomfortable to badmouth you when you're right in front of me.

Seriously. I have three of your pumps. I hate the threaded chucks but the pumps won't die. You've forced me to pay more attention than I want to, but the pumps still live on. You win. Go buy another shiny watch, you deserve it.
  • 23 4
 @Lezyne: If you are getting this lvl o blowback on your threaded chuck and you have a solution that costs nearly nothing, speed chuck, then please start including it as a standard bit of kit with your pumps. If you really want to win the day on the PB forums, PM some of these dissatisfied customers and offer to send them some speed chucks for free and watch them sing your praises from the rooftops. Your move
  • 5 0
 @Lezyne:
"we're not happy until you're not happy" lol
  • 28 2
 @owl-X: Thank…you…?

If it wasn’t obvious, we’re riders too, and we realize that a lot of tubeless systems are good enough today that you’re (hopefully) not getting too many flats in the first place. Our philosophy is that pump you threw in your pack 2 years ago should still work when you do get a flat and should be rebuildable when wear parts wear out. Stories of pumps “that won’t die” put a smile on our faces, so thank you for that.

Not sure about your “shiny watch” comment though. This is still the bike industry after all – If we wanted to get rich we would’ve sold everything and invested in Zoom two months ago.
  • 7 1
 @MikeyMT: Thanks for the feedback Mikey. The ends on the handpump hoses are actually machined to the same spec as the chucks on our floor pumps and tested in the same way, so it’s hard to know for sure what’s happening in your specific setup. If you’d like, feel free to reach out to our customer service team via Support.Lezyne.com. They’d be happy to help troubleshoot exactly what’s going on.
Cheers!
  • 6 0
 @Lezyne: But does that fit in the pump or am I having to carry it around in addition to the pump? I lent a buddy my Lezyne pump and he pulled his valve core out twice after filling up post tire plug and he was livid and stomping around the woods like a mad man. I love the pump, but feel like I need to be super careful when ever I use it because of this issue.
  • 8 0
 @freestyIAM: The Speed Chuck is actually included with most of our pumps! The downside is that it was actually developed for road bike Presta tubes without threads, so the O-rings will actually wear out a bit more quickly than we'd prefer, hence the thread-on connection.
  • 3 0
 @Lezyne: Thanks for the response. Again...no issue with the floor pump, pretty much an issue every time with the small pumps.

I don't know the solution, but worth your engineering team looking into it.
  • 10 0
 @Lezyne: I love your pumps and also have three.

The first time I accidentally yanked a valve core, I *slightly* tightened all the cores on my bikes with a pair of needle nose pliers, and added a drop of WD40 on to the core threads for good measure. No more pulled cores ever again. I push pens for a living and even I figured this out. C'mon guys Smile
  • 7 1
 @Feideaux: I agree. As @Lezyne said, If you tighten the core properly and thread the chuck on without using extreme force it seems to work fine. I've never had an issue in many years and all of my friends use Lezyne and never have that issue either.
  • 1 4
 @Lezyne: It was yours or another, bought the other. But my JoBlow still rock.
  • 5 0
 @Lezyne: I've never had a problem with the valve core using the threaded connection. It takes a touch longer but that's not something that bothers me too much. The threaded gauge on my Travel Floor Drive, on the other hand, broke off despite it being housed for protection and it being in storage for a month. I was hoping to warranty it, but since I bought it while on a road trip, that's more hassle and expensive than it's worth. Do you carry replacement gauges? I figure it may cost less to buy directly. I would still need to figure out how to remove the threaded piece of the gauge that's left in the pump.
  • 3 5
 @Lezyne: I'm trying to figure out who would spend $80 on a pump where half the commenters here day would rip your valve stem out. CO2 cartridges are $1 each as long as you aren't buying them for from bike accessory companies. So, let's say you can get them for even double that price, which would work out to be 40 cartridges, and it only takes one to get an MTB tire to 30psi. Even if it takes 2, that's 20 flats that can be fixed for the same price, and I, being the average mountain biker with a tubeless setup, get maybe one flat every three or four seasons. So it would take me 60-80 years to make the pump worth the price. This is crazy, baby.
  • 11 0
 I have a lezyne pump, it’s awesome. But what makes me like you guys even more is that you are on here answering people (some who are pretty hostile - even though they’ve bought multiple pumps): class act!
  • 1 2
 @MikeyMT: Damn, I have the opposite problem: floor pumps unthread everything, mini-pumps are golden.

SRSLY, I have used the 120psi minis for YEARS with no issues. Bought a fancy-ass CNC floor pump that unscrewed valve cores at least 70% of the time. Lubed the o-rings, got dainty with it, got mean with it, sacrificed a goat, didn't matter. After the gauge failed, I was going to throw it out, but a buddy intervened, saying "These things are the biz! I'll get it going, no problem!" After a couple of weeks, I think he tossed it.
  • 2 0
 @owl-X: I'll have what he's having...
  • 1 0
 Add another kick to the jimmy with the bleed valve right on the chuck, if they're still doing that.
  • 3 0
 @Lezyne: Here's some more anecdotal evidence...I used to consistently, unintentionally remove the valve core when unthreading my Lezyne hand pump but eventually found the sweet spot when threading the pump on and don't often have the issue anymore. Also, the issue comes up more often if my valve sore is bent. So also make sure your valve cores are straight.
  • 2 1
 @Lezyne: that main guy always had a shiny watch. And $250 haircuts. And I think he smelled nice.
  • 4 0
 @Lezyne:
I have had one of your chucks pull a valve-core out once before too. Only once. I re-tapped the chuck and it was great for the rest of time (it was an Alloy drive). FWIW I think the threaded chuck is awesome and I always carry a micro floor drive for longer rides (i've had it for years) - your pumps are some of the best out there - a million times better than any Blackburn or Topeak shite.
  • 2 1
 @Lezyne: Sorry, you say ANY of your pumps can be adapted with the speed chuck, but after going to your site it says it MUST be used in conjunction with a Flip Thread Chuck. When you look at the Flip Thread Chuck on your site, it says it is for use with Floor drive pumps and Micro floor drive pumps... no mention of hand pumps. so, is the speed chuck compatible with the hand pumps or not? I have 2 tech drive HV and 1 pressure drive, and have to confess to having had issues with pulling the cores out, so if this is an option, would love to know.
  • 1 0
 @Lezyne: bicycle019 already asked this (although slightly different wording), but I can't see a reply. Can the speed chuck be left in the hose, or does it have to be carried separately?
  • 4 0
 @owl-X why would you hate something so much but still buy three of them ????
  • 1 0
 @MikeyMT: Yep every time! I've just started using thread locker on my valve cores and will make sure I thread the pump hose on loosely - I've not had to use the pump since but hopefully this fixes it. It is very very annoying after getting a tyre up to pressure only to let all the air back out!!!!
  • 4 2
 @MikeyMT: If CO2 (the planet killer) bothers you, you probably shouldn't ride your bike either. All that huffing and puffing releases CO2.
  • 2 0
 @ratedgg13: I completely agree that the valve stem core extraction feature is a possible issue for some user, however I have yet to experience it myself. I think if you listened to what lezyne has to say regarding how to reduce/eliminate the chances of the valve core coming out you would be happy.

1. Tighten down valve core good and tight with a tool. I've had new factory ones under tightened.
2. The Lezyne fitting only needs screwed on enough to seat the O-ring, it does not require much. The torque of your index finger and thumb is enough.

For every time I've seen a valve core back out with the lezyne pump I've seen valve stems snapped off by people using compression style chucks. Either one happens maybe once every 2-3 years so pick your poison.
  • 3 0
 I did three years of group road riding and at least a couple of times a year someone with a screw on pump would accidentally undo their valve core. It's no fun being that person when you've got twenty other riders who've already been standing round for ages waiting for a tyre to be pumped up again.

I'm sure this can be avoided with careful maintenance, but most people back then weren't using tubeless, so the tube in their bike was whatever had come out of their back pocket. They'd never have thought to check the tightness of the valve applied at the factory.

In the end it got to a point where as soon as someone new in the group got a puncture, someone would check they weren't about to use a screw on pump as they were such a menace!

There surely must be a good engineering solution that has the safety of the screw on thread, but without the potential to back out the valve core?
  • 1 4
 @bbeak: Shut up.
  • 2 0
 @mookmeister: Replacement parts are definitely available - If able, please submit a ticket to Support.Lezyne.com and our customer service team will get you all sorted!
  • 3 0
 @MikeyMT: Sounds like you need to work on your valve-tightening foreplay.
  • 3 0
 @trillot: Our mistake - the Speed Chuck does work with some of our hand pumps, but isn't the ideal solution for all. We do make a presta-only hand pump hose which has a slip fit on one end which would effectively be the same thing, but your're still relying on only the o-ring in the hose at that point: ride.lezyne.com/collections/hand-pumps-accessories/products/1-rp-hose-v2presta
The best solution would be to follow our tips for valve cores in our FAQ: ride.lezyne.com/pages/faq. If you continue to have problems, our customer service team is always happy to help provide a solution via Support.Lezyne.com or even on the phone. Cheers!
  • 1 0
 @enduroNZ: fair question.
My friend was selling them a few years ago. I was injured and itching to buy something bike-related, and I had no floor pump. I got one from him and threw in the ultra-slick looking hand pump with the hidey hose. They looked trick, and still do. That hand pump was the main culprit of the valve issue for sure--I ruined a couple on-trail tire swaps, publicly, and jumped into that more-than-hand-tight valvelife because of it. The worst experience with it was coming up on another rider with a flat in need of a pump...I waffled on offering it up, afraid it'd be more trouble than it would be worth. Watched that poor guy reverse his valve out with my pump, reached into my bag to grab my needlenoses that are the unofficial required companion piece to these things, and performed some PR for goddamn Lezyne. Damn pump.

And then yeah I guess the third pump is one of the mini mini hand pumps with the one-foot stabilizer that is just so damn cool looking. I'm actually not sure I bought it, it may have been a "aw just take this thing out of my garage" piece. I keep that in the giant panniers on my lectrified commuter bike. Thing's a battle wagon with a ton of cargo space, I got like three different sizes of tubes, too many tools, emergency pre-rolls, extra tshirt and underwear, tampons lighters straps and zipties and whatever else so it's not a problem to also bring along the needlenoses in case the Lezyne eats someone's valve.

So yeah. That's why I have three. Floor pump is great, because there's usually other tools around in case it eats a valve. The gauge is precise (may not be accurate, but it's the same every time). The mini floor pump is rad to pull out of the battle wagon. It's that damn hand trail pump. Ruining it for the other two, probably.

I get way fewer flats these days, too, so these mofos are probably with me forever. Congrats again, Lezyne. Buy some polish for that big watch.
  • 1 0
 @rcybak: Problem I have run in to a couple of times on the trail is, what if the CO2 doesn't work? Maybe the hole didn't plug fully, or the plug blows out? What if you lost the bead seat, and it doesn't reset on the first try? What if...

I had several random things happen, and the two CO2's I had in my bike didn't fix the problem. So I ended up either riding out flat (which I did at Sedona, but the wheel was on its way to the trash anyway), or riding very low and cautious in the desert. So I went back to packing a pump where at least I had unlimited attempts to either make the repair, or reinflate a slow leak until I got off the trail. I also carry a tube, patch kit, several plugs, and a bottle of sealant. I ride in very empty areas, often without even cell signal.
  • 1 0
 @Woody25:

Grease is what I would investigate as a way to keep the valve core from removing. Since the threads of the valve core are smaller than the OD of the valve core then the screw on chuck has more leverage to remove the core. Use a dab of grease to reduce the friction. Water might also work.
  • 1 2
 @dsmdan18: Easy fix...change brands!!
  • 3 0
 @curendero: I did, moved to Lezyne because other designs broke the valve stem at the base when pumping, couldn’t seal around the valve properly without leaking, or bent the presta valve in use. It is also lighter, more compact, and mounts to the frame better.
  • 13 3
 How does the head attach to the valve? If it's a screw-on-head, then I hope it comes with a built-in valve core wrench for when you inevitably screw out the valve.
  • 17 4
 It's 2020 and people still can't keep their valve cores tight...
  • 4 2
 @ckunde: I keep them tight as f*ck, with descent valve-core tighteners, yet Lezyne pumps still manage to pull them out. Then when you do pull them out, try to put in a new valve core with a plastic valve core tightener on the trail and then pump that up with a lezyne pump. Been there, done that, pumping up my wheel 6 times in a row.

Now I have topeak pumps.
  • 8 0
 Love hate.
Great reliable small easy ergonomic use floor /foot drive that moves plenty of air.
Pos that unscrews removable valve cores unless there tight to the point of striping threads and you only tighten it to the absolute minimum on the stem.
Locktite your valve cores!
  • 9 1
 I don't get the valve core thing. All of my pumps, home and trail are Lezyne, screw on, and I've never accidentally removed a valve core. (I'm not a shill, BTW.) Maybe my cores are just tighter than I hand-screw on the Lezyne pump? I don't know.

On another note, my anxiety will not let me carry a CO2 cartridge as a pump solution. I've tried. I just need that peace of mind of infinite opportunities to pump up my tires. It freaks me out just thinking about CO2 cartridges.
  • 1 0
 I've never had a valve core unscrew until getting a Lezyne floor pump. Now I have to cinch up the valve cores so they don't unscrew. I have a Giant mini-pump with extending hose that screws on and it doesn't unscrew valve cores like the Lezyne pump does. Agreed regarding C02 cartridges
  • 5 0
 Same. I have multiple lezyne floor pumps and minipumps for years and never had a single problem with a valve core unscrewing
  • 1 0
 @the-joe: it only takes one. It hasn't happened to me in a while but it feels like it was just yesterday!
  • 4 0
 I feel like I could have written this post... I've had a cnc floor drive for almost ten years and don't think I've had an issue. I bought it as the shop I worked in back in the day had one and it was the only pump we couldn't kill! I also feel that I'd be walking if I relied on co2
  • 8 2
 After 3 years of use my lezyne portable pump is 1. Relatively small. 2. Good volume for size 3. Well built 4. Annoying whenever you pull the valve core out. I have learned to tighten my valve cores better. It has pulled out more valve cores from unsuspecting borrowers than me. I would prefer non threaded bu have adapted and am very satisfied with my pump.
  • 5 0
 Love how integrated it is. Nice piece of kit. Have a couple Lezyne pumps and haven't run into the issue with a valve core in years. Just have to be careful and only thread it on a turn or two, not totally tight. Takes a lot less caution than using a hammer, which is apparently how 90% of the commenters here tighten their valve cores.
  • 7 0
 need a video or more pictures to see where and how this all fits and works together
  • 5 0
 Stay tuned!
  • 7 0
 Darn, I thought it converted to a bong...oh crap I have a million dollar idea....
  • 6 0
 I don’t care what y’all think, I like the screw on hose. Just keep your valve cores good n tight.
  • 3 0
 So many comments on valve cores unthreading....I think it happened to me maybe 3 times in 13 years of using their product. Then I figured out I was cranking down the chuck too hard. Problem disappeared. Looking forward to seeing this one in the shop to check it out.
  • 4 1
 I've been in a few very frustrating trail side situations due to my Lezyne pumps. Maybe they aught to ship their otherwise excellent products with a cheap little stamped steel valve core wrench?
  • 4 0
 or include their speed chuck with all the pumps that use a threaded chuck.
  • 11 0
 Our latest hand pump hoses actually a valve core wrench built-in!

Here's an example: ride.lezyne.com/collections/hand-pumps-high-volume-trail/products/1-mp-alldr-v2m04
  • 1 0
 @Lezyne: What would be really cool is if you offered these hoses as an after market product for those of us who already own one (or more) of your hand pumps.
  • 3 1
 @commental: They're available! Upgrade Bikes handles our sales in the UK - we'd recommend you reach out to your nearest dealer or drop us a line via Support.Lezyne.com and we'll help you out. Cheers!
  • 2 0
 @Lezyne: Great, thanks for the reply.
  • 2 0
 @Lezyne: I'm getting mixed messages here. I contacted your company through the link provided and was informed that these hoses aren't available as an after market product.
  • 1 0
 @commental: They might not be in stock in the UK, but they're definitely available as an aftermarket product.
  • 1 0
 @Lezyne: Right...kinda hard to know where to go from here if the person fielding email enquiries on your website doesn't know that.
  • 2 0
 @commental: Sounds like there was just some confusion between in stock vs. overall availability. We'll send you a DM.
  • 2 0
 @Lezyne: Many thanks for coming back to me with the message and the information, great service.
  • 4 0
 would love to see it next to a red bull can or something for reference. not that i drink redbull... it tastes like shit.
  • 5 0
 I read this as "Lezyne's CNC Tubeless Drive Pump has a Secret Pond Beaver"
  • 6 0
 That's the OTHER secret...
  • 3 0
 @Lezyne I want one! When and where can I get one stateside? I just switched to a hip pack and my old pump is to long to fit comfortably.
  • 2 0
 This is just a sneak preview, they're not available just yet - We'll do a big announcement on Ride.Lezyne.com when all of our new product goes live. Thanks for the interest!
  • 4 0
 Wait, does everything fit inside?
  • 5 1
 That's the secret!
  • 2 2
 @Lezyne I have a Lezyne floor pump and used to have a mini pump too. Picture this: Group ride, I get a flat. It's probably something annoying like the rim joint leaking so I can't do a tubeless repair. I get out the brand new tube thats been in my bag for ages. I go to get out my leatherman to pre-tighten the valve core so I can use my Lezyne pump. My mates get annoyed at waiting and give me a non-Lezyne pump.
I don't carry a Lezyne pump anymore.
  • 4 0
 Rich Kilo
  • 4 0
 Rich .45Kilo
  • 2 0
 I immediately saw "espresso machine" and then was just as quickly disappointed. Thanks, Pinkbike.
  • 1 0
 I like the idea, the first variety in OneUp‘s EDC. I still prefer the latter, but I’m curious to see more interpretations.
  • 2 0
 Love my CO2 Blaster! Since having it in my pack, I have not had to install a tube on the trail. Will recommend
  • 1 0
 So you need a pack to carry it? It looks compact but where does it go or does it come with a bottle cage bracket?
  • 1 0
 I wished the hand pumps had a more grippy surface to hold on to.
  • 1 4
 Lezyne, you just keep insisting to yourselves that the thread on chuck is the way to go. I'm sure you're on to something here.
  • 2 1
 ceramic core valve with special locktite coating.
  • 3 4
 SCHRADER. No more problems.
  • 1 2
 Except losing (more) pressure disconnecting the chuck thingy. Maybe I'm just a klutz. Anecdotal evidence from using a Topeak Joe Blow Mountain floor pump on my wife's bike.

P.S. While we're bitching about @Lezyne, I had one of their alloy CO2 inflators and that thing was a pain in the arse. Used to freeze/shrink on to the valve stem. Bashed my kuckles on the cassette a couple of times trying to remove it. Relieved when it developed a leak and I had an excuse to bin it. Replaced it with a Silca one that I haven't had to use yet.
  • 2 2
 Seriously. I don't understand how people tolerate presta valves.

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