• 3 Posts
  • 154 Comments
Joined 1 year ago
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Cake day: June 14th, 2023

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  • Thanks for the reply mate!

    I didn’t think to mess with z-hop - I’ll give that a go, and I’ll do some testing to make sure the Bowden is seated correctly and the wipe on retract is actually happening - thanks!

    The print in the image is a ‘torture test’, and just something I had on hand to illustrate the issue. I’m actually not fussed if there is still some stringing at the top, but other detailed prints were getting it pretty bad, including retraction towers.




  • Look again. I’m not talking about light vehicles.

    A BEV truck can weigh up to 5 tons more than a FCEV. Why would that not be a case use for hydrogen? Now scale up to a ship where volume is no issue. BEV shipping is a non-starter.

    New battery tech is fantastic. But why would you assume new battery tech, currently prohibitively expensive, will come down with scale but hydrogen won’t?


  • Ammonia is significantly more harmful in the event of a leak. Yes, it’s more hydrogen dense than pure liquid hydrogen.

    Ultimately I don’t see a reason to dismiss hydrogen like some are doing. Is it the perfect solution in all cases? Of course not. Does that mean it is not a viable fuel source for transport? Absolutely not.

    Scale solves most problems. Hydrogen also has other uses, such as steel production, which further increases the scale.

    For light vehicles batter EV is likely to be the leading type for some time, as volume is more of an issue then weight for the ranges we need.


  • That’s not entirely true. If you are purely looking at $/kWh then yes, of course this is the case. However that is not the only consideration when it comes to transport. Weight of the drive unit, use of rare earth metals, lifespan of the drive unit, energy density by weight, speed of recharge, ease of transport energy, and more are all considerations.

    I’m not arguing that vehicles will become hydrogen electric. I agree they are not suitable without some serious technological advances. What I’m saying is that at a certain point, larger vehicles (trucks, trains, ships, even aeroplanes) will become more suitable to hydrogen.