Because
Thank you, I’m not sure this is really interesting
Correct 
The fork mentioned never went into series production, it was simply too expensive for AL6061 and I was not happy with the asymmetrical bearing shells. The new forks should be symmetrical so that you can put washers in the clamping slot between the bearing shells. The price should also be more affordable.
Matte is my choice. I would like to buy a 100mm / 29" frame from the test run if possible.
I use my unicycles primarily for road riding and light trails and I’m not that heavy so I’m not the best stress tester but they look nice and I’d like to upgrade my fixed 29" uni to an alu frame.
the test samples are 29" 24" in 100mm, in 120mm, for 26" and 27.5 Fatty. If all samples are good, I will probably make 24", 26 / 27.5" and 29" with 100mm and 20", 24" and 26/ 27.5" for Fatty
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See this:
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I think I have found another good argument. There are always tolerances in production. Be it in the fork or when lacing a wheel. If the tolerances add up, the wheel may not be centered in the fork, but if you turn it 180 degrees it will be. Many people have probably experienced this and wondered why it is like this. Well, you have the option of trying the wheel on both sides and choosing the side that fits better. With perfectly produced components this will not be necessary, but unfortunately the reality is often different.
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Somehow there seems to be a curse on the whole thing. It’s just unbelievable: This fork manufacturer told me that they produce for top brands that I don’t want to name here. I even sent them my two disc hubs to make sure that everything would fit with the fork samples. Unfortunately, the reality is completely different: The wheel is not centered on all 3 forks and the bearing shells at the bottom are not welded straight, in some cases you can clearly see this with the naked eye. The disc mounts also don’t seem to be welded on correctly: Unfortunately, I couldn’t test a single fork because you can’t get the brake to grind free. It’s really sickening. Above all, I wonder how a company that apparently produces good, precise forks can deliver such rubbish to me (for the 2nd time, because I had a sample fork made during the Corona period). Back to square one. There will probably be nothing with these forks in 2024. I hope my 4th attempt for aluminum forks works 
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I would contact @rogeratunicycledotcom for an exchange of opinions. Maybe you’re more fellow sufferers than competitors.
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Unicycle.com has had the same experience with fork manufacturers. Often they just don’t get it!
An example is a very high end manufacturer who we used for one of our new frames, we visited them and they showed us their factory, their reputation etc. I was super impressed, so much so I personally bought a timetrial bike off them. Then at home I checked the frame I had bought, only to find that the forks were not straight! They assured this was a fluke and sent me a replacement. Unicycle samples arrived… guess what… not straight!
We use a few different manufacturers for our range, we visit every factory multiple times and I check all their jigs, including their check jigs all of which I design or advise on with them. We use jigs for welding the subset and complete frames, ones for the bearing housings, brake mount and seatpost stem. We then have jigs for the hardening and then a check jig and cold set tooling. It has taken a long time to get the manufacturers to make frames that are straight or at least within tolerance. I will say… we still get some that we reject!
For people who don’t understand the process, the hardening is the one that is hardest to deal with aluminium frames. You have a perfect frame, but it is either soft or has mixed hardiness’s due to the welding. So you harden it in an oven and your straight frame becomes a banana!
Talking of jigs. I also designed a test jig for testing flex in frames and I test every frame I can get hold of, this helps with our design process in working out tolerances and performance. I am always striving to produce unicycles that are both affordable and offer great performance.
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Unfortunately, I don’t have the financial means to visit the manufacturers. I’m just a small dealer from Switzerland. I’m also neither an engineer nor a trained metalworker or precision mechanic. What drives me is my enthusiasm for unicycling, which has continued unabated since 1981. I’ve turned my hobby into a profession. If a company gives me Mad4One as a reference, I assume that they are capable of producing precise forks. Well, I’d rather have crooked samples than a whole series.
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Don’t do your self down, you are doing great. UDC is not massive either. It is worth visiting the factories to get a relationship going. It is the factories responsibility to get the frames straight, but you need to set tolerances for how much not straight is not acceptable, also don’t do it to the tyre (although you can do that as supplementary, it is incidental), you want to have the seatpost tube to be alighted with the centre of the two bearing housings. You can check this your self with a pipe down the seattube and measure to each bearing. It is discussion you need with them, it is almost impossible to make straight, nothing is! Tyres definitely aren’t! Work out what is acceptable as straight, this may be 1mm or even 2mm, 0 is impossible.
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Yes, I’m waiting for the manufacturer’s statement. He’s keeping quiet at the moment. But thanks for the tips. I’ve never had any problems with my steel forks, they seem to be a lot easier to manufacture. But they also come from a different factory.
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Aluminium is a LOT harder to make if you make it properly and harden it.
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New model
hand-spoked in Switzerland.
With 20x 2.6" tires and TPU tube.
Weight: From 4.2kg
The photos always look a bit unprofessional, I know 
I don’t have the money and space for a professional Photo Studio.
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It’s giving me Retro Koxx One vibes
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you’ll laugh, but I could also deliver it with a Koxx hub . I still have about 100 of these hubs lying around. So far I’ve given them away, but a few days ago I discovered that they actually work with the cranks I have in stock now and are better than I originally thought. All that’s missing are KOXX cranks and those saddles with drug names (white widow, white Russian, etc.). The Koxx shipments always had a customs sticker on them, which means that customs opened the package and examined the contents. It wasn’t surprising, they also wrote these drug names on the invoice and the delivery note.
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Is the frog riding a kangaroo uni? His/Her/The-Frogs feet should be on opposite sides of the axle .
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I know
But frogs also hop Logos are usually simplified graphics. You look at them for 1 second.
I tried the AI Google Gemini for the first time yesterday and just looked at what the AI presented to me when I typed in “logo”, “unicycle” and “frog”. I’ve been calling my cheap unicycles unifrog for a while, but I still needed a logo. The name was inspired by the well-known meme “dat boj”, which shows a frog riding a unicycle. The AI presented me with other good suggestions, but I find them almost too complex for a logo. I like it because I have no graphic talent and am not able to create a logo like that.
These suggestions were all presented to me by the AI. Funny, right?
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