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Batman

Member since Jan 2013 • Last active Apr 2021
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    Either a stack of systainers on a commercial/homemade trolly or Peli flight cases. I prefer systainers as they’re modular and cheaper (although still expensive). But most people use the Peli cases with wheels and extendable handle

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    Chainrings are definitely a much more complex part, although I imagine there is far more documentation on how to make them. I run a narrow/wide ring which I imagine would be quite interesting. If it breaks I will fix it!

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    Are you saying what I think you’re saying...

  • in Bikes & Bits
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    I went to the nunatuk gear workshop, based out of the owners garage and can vouch for the unbelievable quality of their work. Their jackets feel like what i imagined clouds would feel like when i was younger. They're also open to custom work (just did a ventile jacket i believe) only catch is the waiting list.

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    Yeah the correlation between digital input, especially ‘theoretical’ inputs and real outputs can be almost spookily accurate. Speaking of digital accuracy it’s especially cool when the cnc has an analogue indicator on it and you zero the spindle by ‘hand’ because you can set it to move a micron at a time and watch the precision on the indicator. For reference spider web silk is around 3-8 microns. But to answer your question I’ve only got my legs, I’ll keep you updated

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    It’s survived the biggest 5cm bunny hop you’ve ever seen so here’s hoping to many more. We did actually leave a pretty conservative 2mm overall material (offset on each side) which is why the spider doesn’t look exactly like the model.

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    There is! although as you can see the al gore rhythm is pretty keen to fuck it off. There is some lateral load applied to the model but I had more concern over this than my mate so we’ll see if it explodes. I hope I’m wrong

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    It was 1009nmm(millimetres not a typo*) The chainring holes were also under load and a bit of lateral load, although we thought the crank and bb would take most of that. All total it feels like a pretty huge number.

    https://www.researchgate.net/publication­/22663484_Forces_applied_to_a_bicycle_du­ring_normal_cycling

    I believe I got 318nm out of here somehow ps I have no idea what I’m doing. I’m also puzzled why it’s so irregular since the model itself is perfectly symmetrical. although there are moments of similarity it’s not the rule. The final spider is only the 11th iteration for material loss concerns previously alluded to and it didn’t seem to be trending towards similarity. Perhaps it may be a more meta symptom of machine learning in that the algorithm hasn’t yet got perfect logic or more likely the machine knows something we don’t or perhaps this is way above my head. It seems maybe @Rik_Van_Looy might know a bit more than me.

    If mine works I’d be open to making some more if my mates cool with it. (maybe out of titanium #fullbodycume) although warning they will be trick as fuck but they’re likely to be pretty expensive as well.

    • attached pic is of a spider modelled to hold 109nmm because we’d misread it the first time

    Edit: just realised this spider is very symmetrical. We never tried this but I’m not sure if you run the same model twice that you’ll get the same results which is interesting to think about

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    Appreciate it

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