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Old 2017-09-13, 05:48 PM   #1
UniMyra
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Studded tyre for 36'er - possible solution?

A norwegian company has developed a sort of bicycle tyre that you put on top of your "summer"-tyre to make the tyre change from sommer to winter easier. It is attached with a zip lock. So I'm thinking that maybe this could be used on a 36" unicycle with a little "cut and paste". The price for a pair (now) is about the same as a Nightrider 36 tyre.

Website in english: https://retyre.no/products/urban-winter
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Old 2017-09-13, 08:37 PM   #2
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The concept would probably work, but it's not a cut and paste solution with our current 36" tires. The product linked is for 1.5 to 1.65" tires, a bit skinnier than our current 2.25" tires.

My suggestion for a winter 36" tire would be to stud your current tire. There are multiple ways of doing this but my favorite is to use self tapping pan head metal screws from the inside out, with a thin liner between the screw heads and the inner-tube.


If you don't want a dedicated tire that sits in storage for half the year you can just take the screws out in the spring.
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Last edited by saskatchewanian; 2017-09-13 at 08:39 PM.
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Old 2017-09-14, 06:01 AM   #3
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Hello saskatchewanian. When I saw the reTyre add, I was actually immediately thinking of your frankentire. I sent a mail to the reTyre company yesterday and got an answer today. They thought this was very interesting and wanted to borrow my wheel to measure it, and se if they could fit a zip lock to it. I will let you know how it goes.

I've been a little sceptical about making my own studded tyre, but maybe I'll try if the reTyre thing doesn't work out. I have a worn out Nightrider that I can experiment with.
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Old 2017-09-14, 09:31 AM   #4
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I've just visited the reTyre company. It turned out that they were located just 2 minutes from where I live (!). saskatchewanian you were right about the Nightrider beeing too wide, but they had a slightly wider version that might fit even though the thread pattern doesen't cover the Nightrider entirely. They will try to custom make a reTyre for me just because they think it's a cool project, so I'm exited to see if it works out. Ideally there should be a bit more studs in the tyre for unicycling, but i think it will be good. They have to make a plastic model of the rim to be able to sew the sidevalls with the zip lock on to the thread. They are going to 3D print this plastic rim themselves, and if this works out, they could be interested in selling this product to other unicyclist. I dont't what the price will be, but they are only going to charge me for the prototype what a set of reTyre's normally costs. I left my 36'er with them so they can measure it, but they will not be able to make it until october because they are waiting to get the slightly wider thread from China. I will let you know how this goes.
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Old 2017-09-15, 12:31 AM   #5
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Cool. Let us know how it goes with the prototype.

I would argue that a 36er needs less studs for the same surface area than a smaller wheel as there is a longer contact patch. I never did stud my 36er as I found my modified TA worked surprisingly well on glazed snow and ice when aired down to 20 PSI.

I wonder it it would work as a tire by itself, or if it could be used with a much lighter liner than an existing 36" tire.
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Old 2017-09-15, 06:02 AM   #6
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Quote:
Originally Posted by saskatchewanian View Post
I wonder it it would work as a tire by itself
No, probably not, because the zipper needs to be held in place by the tyre.
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Last edited by UniMyra; 2017-09-15 at 06:08 AM.
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Old 2017-09-15, 08:00 AM   #7
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Cool project, and what a coincidence that you're neighbors!

Keep us updated!
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