This deserves a resting bitchface excited meme. @glyphiks, mate, you rock!
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I think that the rim lips also have a part to play in this besides rebound. The rim lips are there to keep the urethane from sliding out, but this also takes away from the thickness for the most part.
For a flat surface, rough or smooth, the urethane block distinguished by the brown arrow, becomes useless besides dampening few vibrations. It can not rebound at all because of the rim lips. The only urethane that can rebound is below the red line. This is not much urethane that is able to rebound, almost as much as a hub motor. There is basically no room for the wheel to rebound and roll over and form to road imperfections instead of just rolling over them taking every imperfection. It doesnât help that the rebound isnât the best. Maybe some god tier rebound would help with this much thickness, but some extra thickness/rebound would help with the rough roads.
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What type of filament/plastic, and what infill settings are you using?
That was petg 100%
The petg has been printing perfectly and strong on the evolve risers that ive been doing⌠i wonder if decreasing the infill will make it stronger 
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I wonder if adding spokes before testing would be the way to go? Most rims without spokes do badly at compression tests.
Remember these are predominantly there to structurally widen the hub and provide a placement guide for the spokes.
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It might, especially when using honeycomb infill.
Iâll be printing structural parts in the new year predominantly from Taulman Alloy 910 nylon filament though.
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Jeez, that failed spectacularly for petg 100%. Did it take much force?
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I think a carbonfil filament would be perfect for this application
Not much force at all.
I have a feeling my bed height could be a tiny bit low, affecting layer adhesion. Will have a tinker tonight.
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Increase the temp and increase perimeters.
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I would print one of those temp towers and see what is the highest temp you can print with that will still look acceptable.
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Good plan, will change to new filament tonight and try that
I will print here latter this week to test
But keep in mind that by itself it may not be strong, when itâs between the rims and with a even compression from the tube it will have way more integrity
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Yeah that was my thoughts too. Will see how I go with different settings 
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Itâs quite thin compared to the few that I have printed.
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There is definitely room to make it more robust, I want to to run it a high pressure
This just arrived
Luckily I just bought one, complete crap, the hole isnât even round, at least it was cheap, now I have to find a tube, didnât realize it didnât come with one
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One of my haggy tires wasnât round. When I emailed them about it they said it wasnât a issue and told me to pump it up and see if itâs still a problem. It was fine under pressure.
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Just got round to trying a 6.5" Trampa tread on the mega deep.
Looks crazy wide.
I had to pump up to around 40psi before the tire stretched out enough to fill the hub but it seems solid.
Itâs only about 160mm diameter after inflation.
Iâm thinking this coulds be a great option for something like a carting track. Smaller wheel will give you more torque and less top end. Wide contact patch for mega grip on a rubbered surface.
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