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  1. T

    Flying Merkel inspired e-bike & sidecar build

    Time for a long awaited update on the Merkel build. So far no progress on the build, BUT much progress on the shop required to complete the build. The shop relocation is complete. It was extensive process, required new electrical sub-panels etc, new storage, new materials and machinery handling...
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    3D flux path tunnel motors with radial and axial rotors are making a splash

    I've posted in the past about Linear Labs HET motor. I few times I misremembered the acronym and called it the HIT motor but it is really the Hunstable Electric Turbine. https://linearlabsinc.com/ It uses a 3D flux tunnel design and features both dual axial flux and dual radial flux rotors...
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    powder metallurgy - SMC group buy expressions of interest

    Had you taken the time to contact a few of the firms you'd have found out that you cannot really get what they claim to be selling. Some of these firms are known to engage in fraudulent business practices dontcha know. FYI I contacted dozens of them, only to have them try bait and switch, or...
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    DIY Toroidal Axial Flux PM

    so was the other fellow talking down to me and misleading people on claiming you can buy off the shelf stator core parts.
  5. T

    DIY Toroidal Axial Flux PM

    Hahaha hahahhahaha right. You can't improvise when it comes to high performance. Most of the materials used in such are not appropriate for my usage or anyone who is seeking to make experimental motor that pushes the efficiency envelop. I'm not trying to build a cheap soap box racer that will...
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    DIY Toroidal Axial Flux PM

    For those interested in smc powder. https://endless-sphere.com/forums/viewtopic.php?f=30&t=114869&p=1698735#p1698735
  7. T

    powder metallurgy - SMC group buy expressions of interest

    Due to chronic health issues, and in hindsight, I don't have the patience or energy to coordinate a group buy while also having to deal with some people's nonsense. I offer congratulations that some of you have mastered a google search, but I've spent months and over a 100 hours communicating...
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    DIY Toroidal Axial Flux PM

    Thank you for that offer. I may very well need to take you up on that. Despite speaking to someone on the phone about ordering from this supplier and the sales person telling me we should not need to have a company place the order, last night I got an email asking for the name of my company and...
  9. T

    DIY Toroidal Axial Flux PM

    HH I cant wait to see video of this in action...
  10. T

    DIY Toroidal Axial Flux PM

    A word about sourcing powders for use in the manufacture of soft magnetic composites. Much of the issue with trying to source powder in low volumes is the fact that there is not a "single" powder, but rather there are various classes of powders primarily developed for compaction in dies and...
  11. T

    DIY Toroidal Axial Flux PM

    I had previously found a alibaba vendor who claimed to have smc powder but I can't find them at the moment. I have leads on UK and US vendors but I wanted to call them to assure that they can supply small batches before I post links to them and po9tentially inundate them with requests they wont...
  12. T

    DIY Toroidal Axial Flux PM

    you can forget trying to purchase hoganas' powders but there are similar ones available in smaller quantities via alibaba. The usual caveats apply... you need to search thru BS and lies to find reputable vendor who will sell low quantities. I went thru this and many tried to sell me powders...
  13. T

    DIY Toroidal Axial Flux PM

    multilayer pcbs have been used in coreless motors they just lack the power of a cored motor.
  14. T

    DIY Toroidal Axial Flux PM

    Outstanding results now...
  15. T

    APL's Pressure Contact Battery box

    I've designed and mostly built 6 compression batteries where the batteries lie flat parallel to the grade being travelled, the pack slides tightly into an aluminum extrusion with moulded in retention slots. The entire pack is compressed end to end. I use end plates and cell spacers on each set...
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    Flying Merkel inspired e-bike & sidecar build

    Nothing much new to add to this thread because I've been relocating shop equipment and finally converting lathe to to a 3ph motor and VFDS. As soon as that is done I have a couple metal working projects to complete and then I can start my motor prototype.
  17. T

    How about a 3D printer section?

    Those are very good choices on the fans. Centrifugal Blowers are essential for any ducted part cooling set-up. One system I really liked had the fatal error of using two axial fans for parts cooling. Aside from less static pressure and flow it adds huge weight in form of large ducts...
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    How about a 3D printer section?

    Yesterday I nearly pulled the trigger on a resin printer when I discovered the cheapest monochrome LCD models were going for less than 250 bucks US and yet still offered incredible detail in tiny prints for lost wax type investment castings. I do small scale modeling and some limited jewelry...
  19. T

    How about a 3D printer section?

    Thanks Alan for the feedback on the Voron and other potential options. I've decided to make my own mount to convert my ender 3 max to a direct drive extruder using existing bowden components and a couple new parts. That will tide me over even longer as will an enclosure based on lack coffee...
  20. T

    How about a 3D printer section?

    This is why I selected the Ender 3 max. It was cheap even with the single upgrade of the BL touch. it has an all metal hot end and can print most of what I want, and can tide me over until I can build a Voron 2 that will be kitted out to print quality parts in technical plastics. Now I just...
  21. T

    How about a 3D printer section?

    Precisely. Sadly it costs as much as my entire printer. Maybe when I go to build voron2
  22. T

    How about a 3D printer section?

    Or how about a revo and direct drive extruder for enders?
  23. T

    APL's Pressure Contact Battery box

    Thanks for the link. They do seem to be laying it on a bit thick and implying a single component when that is not the case. Shame on them. I'm way too far along on my 5 battery packs for my salvaged Alizeti e-bike kits but for my other build I may give this a try from scratch if I can figure...
  24. T

    APL's Pressure Contact Battery box

    Got a reference for your above claim? I hate to disagree but the trampa boards shown are not using proprietary components. They just use contact pads, pogo pins and a PTC fuse that is separate from the contact pads it is adjacent to. IF you look closely at the lower trampa boards they use a...
  25. T

    What's the myers-briggs type makeup of endless sphere?

    Therein lies one of the criticisms... poor conceptual design that allows people to grasp if any of the answers would have a negative consequence that would cause them to desire to lie. Especially when test is being used for corporate or military recruitment. It is possible to know this test well...
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