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Game changer - 36er CARBON wheel!

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  • Vogelfrei80
    replied
    Was riding around 20-25 PSI. I read that uni tires are made to resist during downhill and during high acceleration should bend to not loose grip (like a rear bike tire)... usually they aren't so lightweight, so deinflated, so tubeless and in that specific situation. But now I know that I will use a tire insert

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  • lightbulbjim
    replied
    What pressure?

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  • Vogelfrei80
    replied
    Please be careful using carbon rim + king george ultimate + tubeless setup! The light sidewall of the tire did bend while I was accelerating really hard, causing a pinch of the sidewalls against the rim: the tire survived well, but the tire get a cut that the sealant wasn't unable to close. So don't ride tubeless with that setup, or use an insert or use a tube (foss or butyl). For those interested I ride 137 cranks (so lot of acceleration) and weight 74kgs... the tire sqatted at. the end of the downhill and than completely collapsed as soon as I started pushing hard to regain speed
    Last edited by Vogelfrei80; 2020-05-11, 05:17 PM.

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  • lightbulbjim
    replied
    How do people feel about the crashability of this rim? It's probably going to be used for muni and the chances of rock strikes are pretty high.

    Carbon rims can be pretty tough (see https://www.youtube.com/watch?v=VfjjiHGuHoc) but still... it would be sad to crack it.

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  • lightbulbjim
    replied
    I believe the current version of the TA tyre is also a lightweight build similar to the Nightrider and King George.

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  • acl
    replied
    Built mine onto a Nimbus hub, which seemed almost heavier than the rim - and even with the old, heavyweight, version of the Nightrider tyre, it is indeed amazing, transforms the whole 36" experience.

    My tyre is looking a bit worn on the sidewalls tho - not sure if that's because it's flexing a lot on the narrow rim, but it is a *very* old tyre, so time for a new one. I tried the "lightweight" 36" Nightrider tyre a while back on a Dominator rim and didn't like the cornering, hence the heavyweight 36" tyre I have now. But I've tried a 32" lightweight Nightrider since and it seemed really good...

    This is the only thread where I've seen mention of the Qu-ax King George Ultimate (lightweight version), so I'm wondering whether I should get one of those (for the Alchemist rim), or the lightweight Nightrider? How do they compare e.g. on cornering?

    Cheers, Alan

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  • Vogelfrei80
    replied
    I found 32mm rim tape is perfect for going tubeless. I did spend a lot of time to get the tire right fitted, but now it is flat-proof

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  • bouin-bouin
    replied
    M4O hub has very small flanges, Swiss hub a little bit better but not a lot ; this is not good for spokes strength
    Last edited by bouin-bouin; 2020-03-07, 09:28 PM.

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  • Vogelfrei80
    replied
    If anyone is interested: lightest 100mm ISIS 32H hub (no disc) seems the Mad4One CrM. lightest 100mm ISIS DISC 32H seems the swiss from Einradshop.ch (but cannot find reviews anywhere). I bought the Nimbus disc and the wheel is however great

    I'm not really good at uni, but I'm an "n+1" guy... so I started with a cheap 20", than a fat Hunirex, than a 29", than a g27,5 and now a 36er. Today finally I did the first test... 137 moment cranks (every other uni use 125mm cranks) and this is by far my ultimate choice uni. Only one con: carbon rim is really stiff when gravel/small rocks riding (but it could fly over anything)

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  • toutestbon
    replied
    Indeed, for the two ducks that you are, the combination of 32-holes nimbus ISIS 100mm hub (without disc) + KH spirit cranks seems to be more appropriate.
    Moreover, bouin bouin told me that nimbus 32-holes ISIS hub are now avaible at UDC. They're ready to sell complete wheels!

    While I'm looking for the best performing unicycle (my legs are efficient and very flexible), that's why I prefer the 100mm disc hub + zero Q-factor cranks + lightweight pedal with a short axle (But yes, the price is an asymmetrical and weaker wheel).
    By the way, I mount a zero Q-factor VCX triple cranks 100/125/150mm and I wonder if later I might buy a pair of M4O triple cranks AGILE 117/138/159mm, I need to practice to know if these sizes fit me better.

    In addition, I just ordered on ebay a pair of carbon pedals with a titanium axle (80g, I think it's the weight of one pedal). In my opinion it might be a bit fragile, but I needed a new pair of pedals, they weren't expensive (50€) and their color (black and red) matched with my unicycle.
    Last edited by toutestbon; 2020-03-09, 08:46 AM.

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  • lightbulbjim
    replied
    Originally posted by bouin-bouin View Post

    I don’t like 0 a-factor, my duck feet touch the cranks
    Heh, I’m in the same boat as you. So I use Spirit cranks, which means I may as well use an outboard brake. And then I get to use a symmetric hub, so a nice strong wheel. Win win!

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  • bouin-bouin
    replied
    Originally posted by toutestbon View Post

    OK! My wheel is certainly weaker than yours, but the q-factor of mine is smaller. You can't have it all.
    I don’t like 0 a-factor, my duck feet touch the cranks

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  • toutestbon
    replied
    Originally posted by bouin-bouin View Post
    I don’t like 100mm hub with disc on a 36“ especially with a 32H rim
    OK! My wheel is certainly weaker than yours, but the q-factor of mine is smaller. You can't have it all.

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  • bouin-bouin
    replied
    I don’t like 100mm hub with disc on a 36“ especially with a 32H rim

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  • lightbulbjim
    replied
    Originally posted by toutestbon View Post
    Hello!

    A short review from France.
    One week ago, I built the wheel with a nimbus 32-hole ISIS disc 100mm hub and 367mm spokes. Except some spoke head stucked in the rim, there was no problem. I think these 367mm spokes are a little bit too long on the disc side (maybe 2mm). I will check if I need to disassemble the wheel.
    I also think that this rim has a direction of rotation, because the reliefs of the rim near the holes are asymmetrical. And of course I think I've done it backwards. That's why, I could disasemble the wheel to rebuilt it in the rigth side.

    My first impressions are really good. Yesterday, I did a 40km ride with some climbs, it was really easy.

    The complete unicycle is under 6kg, you can view pictures and speficiations here.
    Nice wheel! Sounds like a good setup.

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