Jump to content

Converting a Mten3 to tubeless operation.


Recommended Posts

Posted (edited)

What I learned from my tubeless Dualtron (scooter) tires is that one tiny nick to the inside of the wheel surface will require an entirely new wheel.  It won't ever seal properly again after that.  I wound up buying a wheel + pre-mounted tire for $75.

Edited by xorbe
Link to post
Share on other sites
  • 3 weeks later...
  • Replies 141
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

I tried it with a rope today. I couldn't tie a knot tight enough. I then used a ratchet strap and strapped the Mten3 on top of a table, and to my delight the darn thing is holding air! It's wild, I ju

That won't fit MTen3!   Yes! Worked great for me (no drilling).  

Hey man - thanks for posting that (that's my video posted with my consent).  I hope it's useful to somebody.  I suppose I should join the forum!  :) I know I'm going to have to bite the bullet an

Posted Images

On 5/10/2021 at 8:30 AM, RagingGrandpa said:

But why use the larger valve stem and drill?

Howbout use the "Xiaomi valve stem" like Gotway does originally; no drill...

ACtC-3dSXHW5O6prn4Z_7iHH3crFlXo6EzSbXBAej2VzvwF4cMaSABhYvfP7W1RKSavjzwBTvu3-LvDLThJ2wtd6DrznT17LfWbWiHg3PFSbSUxMFVHitOTVO5ne59zUZIk-D3dywnxCEPQQtVyWp1jnhZGXUQ=w1000-h487-no?authuser=0

Sorry to dredge up an earlier post - I'm not overly active here.  The video your discussing is mine.  The simple answer is I would have loved to have a valve stem that (1) just fit the existing hole, and (2) was just a little bit shorter.  I'm in New Zealand so, while Amazon is awesome, it's typically a 2-3 week delay.  Aliexpress has been super unpredictable with COVID (can be months).  So I was stuck with what was available in country (or waiting which I wasn't overly interested in).  I ordered a handful of valve stems from an automotive wholesaler (I covered them later in the video and in the description), but none of them were realistically going to fit.  So it ended up that the best option I had was swinging by the local tire place and grabbing a TR412 and drilling the hole to match the TR412 spec.

TL;DR - if you can get a smaller valve - absolutely do it!  My patience didn't extend to the 3 week wait.

Link to post
Share on other sites
Posted (edited)
On 4/21/2021 at 4:21 AM, Gasmantle said:

I’d be interested to know what you think of yours after you've had it a few days, could you please update us if yours has similar problems - (hopefully yours will be trouble free though)

Here’s the update… the wheel arrived in FL with a flat tire (not a great sign), but was fine after pumping it up. It’s a 2 ply Innova 70/65-6.5. I rode it for a week in FL without problem, fiddling with the pressure every day to see what was least scary… settled on 28 lbs indicated by my four for $10 pressure estimator (I only buy the very very best tools).

Shipped it back home, which took a week—aaaaaannnnd the tire was flat. Pumped it back to 28 lbs and put 8 more miles on it, total mileage is 105. Golden!

Well, except today it’s down to 25 lbs so it has a slow leak.

Debating whether or not to put sealant in it (I use RideOn) but don’t want to—changing the tire will be fun enough without slippery slop all over the place.

@ShanesPlanet how’d your replacement tire work out?

What do I think of the MTen? Fun little beastie! Not for “getting places”, but for doodling aimlessly about it’s just the ticket. More than a little twitchy, it steers with my foot direction and that’s a bit unnerving but I’m getting the hang of it.

Edited by Tawpie
Link to post
Share on other sites
Posted (edited)
35 minutes ago, Tawpie said:

Here’s the update… the wheel arrived in FL with a flat tire (not a great sign), but was fine after pumping it up. It’s a 2 ply Innova 70/65-6.5. I rode it for a week in FL without problem, fiddling with the pressure to see what was least scary… 28 lbs on my four for $10 pressure estimator (I only buy the very very best tools).

Shipped it back home, which took a week—aaaaaannnnd the tire was flat. Pumped it back to 28 lbs and put 8 more miles on it, total mileage is 105. Golden!

Well, except today it’s down to 25 lbs so it has a slow leak.

Debating whether or not to put sealant in it (I use RideOn) but don’t want to—changing the tire will be fun enough without slippery slop all over the place.

@ShanesPlanet how’d your replacement tire work out?

Get some dish soap and water in a spray bottle and spray the tire while inflated. If its a slow leak, youll need to do it in the shade on a cool tire, so the soap doesnt dry. Keep misting it. Pay particular attention to the area where the valve is pulled thru. Also put a tiny bit of water in where the core is. Sometimes the core is a slow leak. Keep at it diligently and eventually you will notice the trail of tiny bubbles. Changing the mten tire is a 30-45minute affair with basic tools. Be sure to check the pedal hangers while in there if you have to open it.

I made a video of my tire swap. In the end, I went back to the cheap ass stock 2 ply tire. The 4 ply tire was MUCH more solid and would probably last a LOT longer, along with resisting punctures. However, I just happen to be lucky with tires and it was too easy to change for me to worry about wearing too quickly (for now). WIth the added plies of the aftermarket tire, I could feel all the little rocks on my apshalt. It wasnt bad, but I really do use my mten for comfort above longevity. The 4 ply tire also turned in much easier, but the mten doesnt really need that quality. EIther was a fine choice, I just went back to the softie stock. Remember, Im only 130lbs and hate jumping. As of note, the 4 ply tire REQUIRED me to do the ratchet strap trick to inflate it. VERY stiff bead and getting it to take air, required that little trick. Probably doenst make you feel any better, but both my mtens have been holding air since I bought them, exlcuding typical loss due to compound porosity. No sealant or slime in mine.

 

Edited by ShanesPlanet
Link to post
Share on other sites

Thank you @ShanesPlanet, I’ll hope it’s the core cuz they’re easy! If not, maybe I’ll just pump it up every time. Somehow that seems easier than blindly reseating it although I probably could just break the bead and use bead sealant. Decisions decisions.

Link to post
Share on other sites
Posted (edited)
12 minutes ago, Tawpie said:

Thank you @ShanesPlanet, I’ll hope it’s the core cuz they’re easy! If not, maybe I’ll just pump it up every time. Somehow that seems easier than blindly reseating it although I probably could just break the bead and use bead sealant. Decisions decisions.

Pumping it up may be easier, but what happens when you forget? I bet its a pin hole leak in the tire. If it is the bead, you may simply need steel wool the inside edge and clean the tire. They painted these newer version rims, its possible they didnt do a stellar job of painting and/or verifying clean metal before doing so.  You wont need to remove ANYTHING to clean the rim bead. Just take the core out, bust the bead down while on the wheel, and run a rag with paint thinner or basic steel wool. Reinstall core, reinflate, spray test again. Its easier if you have tiny thin fingers...

Edited by ShanesPlanet
Link to post
Share on other sites
  • 2 weeks later...

I'm in the exact same case as @aviateNZ, I punctured my mten3 at the 10th km, probably because the wheel didn't have enough pressure in it and the rim pierced the tube against some bump. So naturally I'm inclined to consider the operation as well. But now that I have so much problems finding a repair shop that will do it and since I don't have any tools either, I'm being forced to reconsider.

Most repair shops around me tell me that a tubeless conversion would have to be done by changing the tyre and rim. With a double rim. Obviously this isn't true, but how it is so simple? AviateNZ didn't even change the tyre even when I suspect most other people here did. Why is it "necessary" when it isn't? Is it because the mten3 is actually a tubeless wheel with a tube slapped into it?

Link to post
Share on other sites

You only need a phillips screwdriver, tire levers and a pump. There's 8 screws to split the shell and 6 screws per pedal hanger. I only take the pedal hanger off on the side without motor wires. Changing the tires is relatively straight forward. They're some videos posted online for the tire change. I used the small valve stems made for the Ninebot mini. I got mine from 4motion. I order two. The shipping was more than the cost of one part. I think someone on this forum posted a link from eBay for the same valve stem. The tires are shit quality. I ordered two tires from Amazon. My son had a blowout on the original tire. The Amazon tire looks exactly the same as the original but has a cleaner casting. I can change the tire in about twenty minutes. 

Link to post
Share on other sites
18 minutes ago, Unipilot69 said:

You only need a phillips screwdriver, tire levers and a pump. There's 8 screws to split the shell and 6 screws per pedal hanger. I only take the pedal hanger off on the side without motor wires. Changing the tires is relatively straight forward. They're some videos posted online for the tire change. I used the small valve stems made for the Ninebot mini. I got mine from 4motion. I order two. The shipping was more than the cost of one part. I think someone on this forum posted a link from eBay for the same valve stem. The tires are shit quality. I ordered two tires from Amazon. My son had a blowout on the original tire. The Amazon tire looks exactly the same as the original but has a cleaner casting. I can change the tire in about twenty minutes. 

This is actually quite the relief. Especially since I learned I don't need a drill since the proper (?) valve fits the original hole.

Ok I'll order a portable electric pump and a valve then. I will get a new tyre when the original one blows up. Thanks for all the info.

Link to post
Share on other sites

When I first took the tire off the tube was scuffed all over and had at least a dozen pin holes in it. They weren't pinch flats. I think tire rubs the tube when it flexes. These are so small I think they were designed for tubeless. This size of tire was made for scooters. On unicycles the load doubles since there's only one.

Link to post
Share on other sites
Posted (edited)
1 hour ago, RagingGrandpa said:

That won't fit!

Sorry to disturb this topic about Mten, but this is to convert my MCM5.
Was you speaking about MCM5? Because as I see the small ones have even less chance to work on MCM5...

 

EDIT: I stop now to confuse this Mten conversation with other wheel(s),
I'm buying these ($1.39!) and will open a topic about MCM5 tubeless conversion when received;)

Edited by Camenbert
Link to post
Share on other sites

I don't know what tire they put on the mcm5 but the one on my RS was to floppy to work as tubeless. I've ordered the cst 6004 from China. I'll attempt to make that one tubeless. They say it's a motorcycle tire. That should be stiff enough. When you get the old tube out measure the rim hole. I think the smallest valve stems might be too small. I don't have the mcm5 but there's teardown videos posted as well. Electric unicycles don't require any special tools. Just common hand tools and some ingenuity.

 

 

 

Link to post
Share on other sites
  • 1 month later...

This is to add my experience about the operation.

My tube burst after the 1st 10km of my wheel's life... I immediately decided to go tubeless due to reading all the shit that goes on with the tubes in the mten3.

It's really not that difficult. All I had to do was find a bicycle repair shop willing to do it (that was the hard part) and find the valve. Compatible with a bunch of dualtron scooters as well. (Length: 24mm/0.94" ; Applicable hole diameter: ≤9mm/0.35")

I paid next to nothing, 6€ for the valve, the shop did it for free because it took them 10' to do it.

So I really recommend that you go tubeless immediately, there's really no good reason to buy tubes, the tyre is fine, I don't think you need to change it to go tubeless.

Hope this helps.

Link to post
Share on other sites
  • 1 month later...

Can you please provide an updated link for the valve stem, or better yet provide the brand name, part #, hole diameter of the valve stem? I am having a difficult time finding a valve stem to work with this wheel.

Link to post
Share on other sites
48 minutes ago, Paulstudmuff said:

Can you please provide an updated link for the valve stem, or better yet provide the brand name, part #, hole diameter of the valve stem? I am having a difficult time finding a valve stem to work with this wheel.

https://more4motion.com/collections/mini-pro-tires/products/valve-for-mini-pro-tire

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...