Nextie 36" carbon rim

Received two Nextie hooked - presta - rims recently. Application is for a 36er Blacksheep bike. Front is a 36 hole rim built with a Schmidt SON dyno hub. Rear is 36 hole rim built with Onyx racing boost 36 hole XD hub. Both wheels built by Ernie Fisher - guy that has built thousands of wheels in Des Moines and Tuscon. Ernie has been building wheels for decades. He used DT rim tubless rim tape.

Tires were a used set of Vee T-Monsters. I used Vee 36" presta tubes.

Ernie made unsolicited comments when I asked how the wheels built up. This was his first set of 36" wheels. “These rims built up great. Very high quality rim. After initial build and a few tweaks they were spot on. I then stressed the spokes to see if I could get the rim to move out of true. I do this because rims of poor quality will usually need more adjustment. These rims did not. Beautiful rims.”

I mounted the used T-monsters with minimal effort. Tight fit but not too tight. They were tighter than the NR Lights I had mounted on the Dominator rim. More thoughts on that later… I lightly inflated the Vee tubes and inserted tire on one side before mounting the other side of the tire. I did not need to use tire irons. Once inflated to 45 PSI I let them sit for a couple hours. During initial inflating I received audible pops of the tire seating on the rim. I had to move the tires a bit by hand to get proper alignment. I then deflated the tires and disengaged the bead from the hooks / rim. These tires seemed to seat very nicely into the hooked areas of the rim. It took some effort to get the tire bead to unseat which I consider a good sign. I then inflated to 45 PSI and let them sit over night.

The following day I rode the bike about 5 miles. Everything was fine. Last night I rode 20 miles and no issues. Tires were great and appear to be well seated in the hooks.

I am not a unicyclist so my tire/wheel needs, in terms of PSI, are different than a unicycle application where more PSI may be needed. 45PSI for my needs is great. I don’t need 60-65 PSI for a 36er bike application. I did not pump these up to 60 to see what would happen because I simply don’t have the need. I guess others will have to determine if this set up is good at higher PSI’s.

What I can tell you is that I am a 66 year old guy that has built hundreds of bikes (mountain, gravel, road, tandems, recumbent, recumbent trikes). I build high end bikes. I know wheels and I have a lot of experience with carbon rims - both hooked and tubeless (hookless) from a number of different manufactures (Whisky, Mavic, Zipp, Enve, Boyd). Initial impression is that these hooked rims are very similar to others I have used. In fact I would say that the hooked sidewall area has maybe a bit more depth than the others.

I ordered and cancelled the Nextie non-hooked version prior to even getting on this forum. Knowing that there were no tubeless compatible 36"tires available was the cancellation reason. Then I signed up for this forum to see what I could find out about unicyclists experience with this and the Braus rims. I purchased a set of Braus rims from Unicycle.com but sent them back because of the fact that they too are hookless rims. I worked with many of you in order to get the minimum rim order put together in order for Nextie to manufacture a hooked version. I ordered 3.

Many of you started questioning Nextie on testing the rim with the NR tire. Many of you reached out to Alice. My feeling was that there were “too many cooks in the kitchen” so I cancelled my order prior to shipping. I have always had a hunch that many of your complaints were not justified and had nothing to do with the Nextie rim but rather the tire you were using. However, your comments did give me pause so I thought I would just wait for more user experience. Alice was always quick to send me a refund on the same day. I find Nexties customer service to be excellent.

After a couple of you on this forum posted positive feedback about the Nextie rim and the T-Monster I felt I would take the chance and order a couple rims. Personally I believe that the NR light tire is out of spec. My experience with using it on my 36er is that it is larger in diameter than posted. Again, just my opinion. Black Sheep cycles seems to prefer the T-monster tires as does other 36 inch bike builders. Luckily I was able to get two used ones. I believe the NR light is good with the stealth rim because the two were designed around each other. I just think many of you have bad mouthed Nextie inappropriately even after they gave some of you a full refund knowing full well that the NR tire is out of spec.

I would encourage those of you, like me, that were on the fence about ordering these rims to give them a shot. The weight difference is noticeable. The only advice I would give is to make sure you have a T-monster to mount on the rim.

For those of you that already received a “free” rim from Nextie - give the T-monsters a try once they are available. I think you are going to like this rim. I cannot speak to the need to run these at 65 psi or if that will result in blow-offs. My hunch is that they will hold - but just a hunch.

Probably won’t be on this forum again unless I have negative issues going forward with these rims. Good luck to all of you. I think this rim is a winner.

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I think you’re missing the point where the whole reason why us unicyclists were interested in a hooked version was for the NR tyres, and Nextie assured us that it would be fine.
The idea was that it was being designed for use with that tyre (and indeed they seemingly modified the rim they were going to make after they actually received a NR tyre for test).

They claimed for ages that it was fine (and that they had tested it) with a NR Lite tyre at 60PSI, but then when we all had failures at significantly lower pressures and asked for proof, they were totally unable or unwilling to provide any (indeed seemingly hoping for limited understanding on my end when they sent “proof” that was nothing of the sort).


I’ve nothing but positive things to say about the quality of their rims, but it was never about that.

Yes I received a full refund for my rim in the end, but it’s by no means been free.

Very happy to hear that your rims are working out for you though - knowing what we know now, if you can get the right parts, they do seem like a great option.

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Not missing the point at all. You and others ordered and then started questioning Nextie after the fact. Which is why I cancelled. No rim manufacturer is going to test every tire with their rims. You should not have ordered if you had doubts. All you did was cast doubt about Nextie. Did you ever bother to hold Nightrider accountable for manufacturing a tire that is out of spec? Your not the only one that is out of money due to all the negative comments you and others made about the rim. I built a full set of wheels only to regret not going with Nextie. The dominator rim is a piece of crap. Hard to build up. Hard to true. Sharp hole drillings causing numerous flats. Don’t even get me started about the piece of shit Foss tubes that Unicyle makes a fortune on. You miss my points. You and others still bashed Nextie even after they gave you a full refund. My guess is that the did put the NR tire on the rim and pumped it up to 65. Just as you and others asked. Did they actually ride it on a Unicyle? Probably not. Did Night Rider test their piece of crap tires on the Nextie rim? No. But they were more than happy to charge $120 eac for those of us that expected them to be in spec and to work with other 36 inch rims. I have 3 useless NR tires and 4 foss tubes that are not compatible with my rim. Have I blasted them on the forum or held them accountable? Have you? Why not. Don’t lecture me Terry.

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I’m not Terry, but I took them on their word about NR compatibility, which had turned out to so far be a falsehood.
I told them I’d happily not take a full refund if they could show that they could get a NR tyre on a Nextie rim statically at 60 PSI - they decided to give me a full refund instead. Make of that what you will.
The refund was also not hush money - the fact I got a refund changes nothing about what happened.


I wouldn't have gone ahead with the purchase of a rim without their assurances that it was going to be OK. That was the only reason why us unicyclists cared about a hooked rim in the first place. If we had modern design tyres made to modern specs, the hookless rim would be just fine. There was always going to have to be a bit of trust in such a situation, but Nextie kept assuring us all was fine so I trusted them.
I can happily shit on most products, and I do when it's warranted - the history of 36er rims, tyres and compatibility is a whole other long story though. On the whole unicycle parts are medium quality, low budget parts made in comparatively small volumes, so there's a lot that is put up with that high profile bicycle parts manufacturers just wouldn't get away with.

Maybe you’ve got a point though and perhaps when I’ve got a bit more time I’ll rant about quality and design issues for unicycle parts - rest assured that Nextie won’t come up again there, but there’ll be no shortage of material to discuss.

Stick those parts you’ve got up for sale though and I’m sure you’ll get people interested in buying them.



Just a quick point on Foss tubes - they're made by Foss, and happily run by many riders as the lightest weight option around. I doubt unicycle.com makes very much on them - the ones for bikes are heckin' expensive as it is.
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I feel if you post those night rider tires on here as well as the foss tubes you will recoup your money. I’m with you on the foss tubes, I’m not a fan not worth the weight savings for me. Also I felt bad for nextie, being bashed online can be the kiss of death for a business.

Hey, that wasn’t me! But I totally agree with Mowcius that it was Nextie who gave us absolute assurance that the NR could be safely inflated to 60 PSI, and that was absolutely not the case, which could put riders at risk of serious injury. Either they weren’t altogether truthful about their claim or didn’t properly test the NR at that PSI under actual or at least simulated riding conditions. Either way, we didn’t get what we were promised. Although I didn’t ask for a refund and still have the rim, I’m hopeful that when the T monsters are available again, they will solve the issue.

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I didn’t ask for a refund either, but I do feel that I was deceived by an unethical company. It’s not the first time that’s happened and it won’t be the last, but I would definitely tell any perspective buyers to avoid them in the future.

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I now believe Nextie when they say they tested a Night Rider lite tire to 60PSiI on their rim to 60PSI. It might have been my rim they tested it on, mine is plain without their Brand Name. Also noticed they are using a new tire, you can see in the picture the rubber tags/hairs that formed in the small vent holes in the tire mold. I can say this with confidence that it is possible because I have now done so. I purchased a new unused Nightrider lite tire and mounting it on the Nextie Hooked rim with the Vee Rubber presta tube two times now. Once without spokes and hub and now with a complete wheel build up. In both cases I inflated it to 60 PSI briefly. and for an extended period at 55PSI. I am still worried about blowoffs when I ride. Which I plan to ride about 4 miles and check the spokes and go from there. Not sure how far I will go this weekend. BTW NEXTIE did give me a choice between a partial refund (keeping the rim) and full refund (returning the rim) before I had done anything with the rim. At that time I was only hopefull that the T-Monster would be a solution. I ordered the Nighrider Lite cause I am tire of using the heavy weight Nighrider tire and was planning on using it with my Nimbus rim, but wanted to try it on the Nextie before doing that. So this tire has never been mounted on a nimbus rim unlike Terry’s and Mowcius’ tires. Not sure if that is a factor but could be. I suspect the tire Nextie tested had not been mounted on a Nimbus Rim. Hopefully I don’t get hurt testing out my new wheel. Wish me luck

GOOD LUCK!!!

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Yes, Roger organised for them to get a new tyre from UDC China.

I presumed originally that they had got a tyre on a rim at 60PSI, and as I did manage to (briefly) get a non-new tyre on a rim at 50PSI I was happy to believe as such - but they never seemed to be interested in providing any proof of such when I queried it, so I’m not entirely convinced. I don’t think we’ll ever proper get confirmation either way.

I do wish you all of the luck I’ve got, but be aware that even not on the Dominator 36" (Stealth II) rim, the wire bead in the NR will likely stretch slightly over the time, and the rubber underneath the bead will become more supple, so at high pressures you’re almost certainly just sitting on a delayed failure.
I don’t believe that new tyres have any manufacturing tolerance differences.

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One would think that Nextie has engineers or design technicians that are intimately familiar with the specs of bicycle wheels and tires. I mean, if that’s what you do for a living you quickly come to know these things and over a period of years you tend to know when there will be a problem if something is out of spec. Considering that a number of people here that are not bicycle wheel specialists identified a potential problem before the wheel was even made, I have trouble believing that their design techs didn’t also realize there was a problem.

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I have several NR tires, lites and regular, and ALL mount to my dominator (stealth ll) rims dead easy, with less than minimal force and without levers, (and could easily fall off the rim before inflating!) yet they hold perfectly fine at max pressure (65psi). This is likely owing to the much taller rim walls, more defined and prominent hook system, and deeper channel. This would seem to indicate that a tighter fit doesn’t necessarily prevent blow offs.

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I need help with the tube. I’m still testing the wheel so won’t mess with tubeless and I need to remove the tire+tube every moment to check those hell of rope spokes. I read about the Schwalbe SV19 model… but I cannot understand what type exactly. There are too much flavours: 1. 27.5/28/29 type (the same tube expances for all sizes) 2. 29/29+ Air plus (which seems stronger and it is used for cargo bikes, maybe less stretchy) 3. 27.5+/29+ free ride (which is the only described to 29x3)…

Which one are you riding for a 36er with presta hole?

I’m using the SV19. There is only one tube with that model number.
The other you are refering to is called SV19AP (air plus) and SV19F (freeride).

Is this one-size fit all?

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Might as well be… I put a 24” inner tube into a 29er and a 29er tube into a 36er. Both seem to work fine.

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It seems mine has an updated packaging, but yes that is the correct tube… :wink:

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Thanks for the feedback. So far I have ridden the Nightrider light tire on the Nextie Rim 116 miles at 40 psi +/-1 (best I can tell). I may be nuts but have taken to heart what you said about being careful and the prior quote. I deflate to about 10 psi after each ride. Trying to reduce the time the tire is under load for stretching out the tire bead. Also I gear up like mad to include KH leg armor, hip pads, elbow pads wrist guards, helmet and Legtt Chest and back protection. Makes for really hot rides but I don’t worry so much about the likely hood of a blow off. It even saved my hide once on a Nasty UDP due to going to 110 cranks too soon. I was amazed at how well the Legtt chest and back protector worked. Riding with 117mm cranks now without issues. I really like the way the wheel rides. It’s a real shame thou that your and Terry’s tire blew off and I am having to gear up so much to hopefully mitigate the risk of an impending blowout. Still worried that I should be wearing a full face helmet using this rim tire combo ir maybe just no ride it for now. Just want to ride it between now and the time the T Monster is available. May try taking it down to 0 PSI soon to see if the tire is still tight in the rim bed. Was sure until now how folks were pulling in quotes. That’s a nice feature.

According to the websites that normally carry it, the T monster was supposed to be back in stock as of today, 7.5, but now that date has been changed to July 15th. Why am I not surprised?

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The “back in stock” due date of 7.5.22 came and went, and then was changed to 7.15.22, which also came and went. I sent an email to Vee tire co. asking if they could give an update/status on when the T Monster will be back in stock. Hopefully I’ll get an answer soon.

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