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Show HN: I built a RAG engine to search Singaporean laws

https://github.com/adityaprasad-sudo/Explore-Singapore
1•ambitious_potat•3m ago•0 comments

Scams, Fraud, and Fake Apps: How to Protect Your Money in a Mobile-First Economy

https://blog.afrowallet.co/en_GB/tiers-app/scams-fraud-and-fake-apps-in-africa
1•jonatask•3m ago•0 comments

Porting Doom to My WebAssembly VM

https://irreducible.io/blog/porting-doom-to-wasm/
1•irreducible•4m ago•0 comments

Cognitive Style and Visual Attention in Multimodal Museum Exhibitions

https://www.mdpi.com/2075-5309/15/16/2968
1•rbanffy•6m ago•0 comments

Full-Blown Cross-Assembler in a Bash Script

https://hackaday.com/2026/02/06/full-blown-cross-assembler-in-a-bash-script/
1•grajmanu•11m ago•0 comments

Logic Puzzles: Why the Liar Is the Helpful One

https://blog.szczepan.org/blog/knights-and-knaves/
1•wasabi991011•22m ago•0 comments

Optical Combs Help Radio Telescopes Work Together

https://hackaday.com/2026/02/03/optical-combs-help-radio-telescopes-work-together/
2•toomuchtodo•27m ago•1 comments

Show HN: Myanon – fast, deterministic MySQL dump anonymizer

https://github.com/ppomes/myanon
1•pierrepomes•33m ago•0 comments

The Tao of Programming

http://www.canonical.org/~kragen/tao-of-programming.html
1•alexjplant•34m ago•0 comments

Forcing Rust: How Big Tech Lobbied the Government into a Language Mandate

https://medium.com/@ognian.milanov/forcing-rust-how-big-tech-lobbied-the-government-into-a-langua...
1•akagusu•34m ago•0 comments

PanelBench: We evaluated Cursor's Visual Editor on 89 test cases. 43 fail

https://www.tryinspector.com/blog/code-first-design-tools
2•quentinrl•37m ago•2 comments

Can You Draw Every Flag in PowerPoint? (Part 2) [video]

https://www.youtube.com/watch?v=BztF7MODsKI
1•fgclue•42m ago•0 comments

Show HN: MCP-baepsae – MCP server for iOS Simulator automation

https://github.com/oozoofrog/mcp-baepsae
1•oozoofrog•46m ago•0 comments

Make Trust Irrelevant: A Gamer's Take on Agentic AI Safety

https://github.com/Deso-PK/make-trust-irrelevant
5•DesoPK•49m ago•0 comments

Show HN: Sem – Semantic diffs and patches for Git

https://ataraxy-labs.github.io/sem/
1•rs545837•51m ago•1 comments

Hello world does not compile

https://github.com/anthropics/claudes-c-compiler/issues/1
33•mfiguiere•57m ago•19 comments

Show HN: ZigZag – A Bubble Tea-Inspired TUI Framework for Zig

https://github.com/meszmate/zigzag
3•meszmate•59m ago•0 comments

Metaphor+Metonymy: "To love that well which thou must leave ere long"(Sonnet73)

https://www.huckgutman.com/blog-1/shakespeare-sonnet-73
1•gsf_emergency_6•1h ago•0 comments

Show HN: Django N+1 Queries Checker

https://github.com/richardhapb/django-check
1•richardhapb•1h ago•1 comments

Emacs-tramp-RPC: High-performance TRAMP back end using JSON-RPC instead of shell

https://github.com/ArthurHeymans/emacs-tramp-rpc
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Protocol Validation with Affine MPST in Rust

https://hibanaworks.dev
1•o8vm•1h ago•1 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
4•gmays•1h ago•0 comments

Show HN: Zest – A hands-on simulator for Staff+ system design scenarios

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1•chanip0114•1h ago•1 comments

Show HN: DeSync – Decentralized Economic Realm with Blockchain-Based Governance

https://github.com/MelzLabs/DeSync
1•0xUnavailable•1h ago•0 comments

Automatic Programming Returns

https://cyber-omelette.com/posts/the-abstraction-rises.html
1•benrules2•1h ago•1 comments

Why Are There Still So Many Jobs? The History and Future of Workplace Automation [pdf]

https://economics.mit.edu/sites/default/files/inline-files/Why%20Are%20there%20Still%20So%20Many%...
2•oidar•1h ago•0 comments

The Search Engine Map

https://www.searchenginemap.com
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Show HN: Souls.directory – SOUL.md templates for AI agent personalities

https://souls.directory
1•thedaviddias•1h ago•0 comments

Real-Time ETL for Enterprise-Grade Data Integration

https://tabsdata.com
1•teleforce•1h ago•0 comments

Economics Puzzle Leads to a New Understanding of a Fundamental Law of Physics

https://www.caltech.edu/about/news/economics-puzzle-leads-to-a-new-understanding-of-a-fundamental...
3•geox•1h ago•1 comments
Open in hackernews

Rcyl – a recycled plastic urban bike

https://rcyl.bike/en/the-bike/
33•smartmic•3mo ago
https://web.archive.org/web/20250912174820/https://rcyl.bike...

Comments

daemonologist•3mo ago
https://web.archive.org/web/20250912174820/https://rcyl.bike...
dang•3mo ago
Added to toptext. Thanks!
daemonologist•3mo ago
A nearly all (">90%") plastic bike is interesting, and I guess if you're a plastics company that wants to create a bike it makes sense, but the end product does not seem very compelling to me. 17 kg, 1200 EUR, one size, proprietary parts, and only 50% recycled. A comparable aluminum bike beats it in every metric except maybe fatigue life(?).
avtolik•3mo ago
My first bike bought with my first salaries (about 2-3 months) just turned 20 years old. It's a basic aluminum hardtail MTB. Still going strong - I do about 2-3k kms per year.
alright2565•3mo ago
Pretty much. I thought that maybe this is an electric bike, in which case the weight might be OK, but no, this is unusable anywhere with hills.

As a quick reminder, metals can be recycled indefinitely. Plastic cannot, you always have to include some virgin material.

userbinator•3mo ago
You can recycle via depolymerization (see the various plastic-to-oil conversion refineries), although that's a more expensive process than simply melting and recasting.
rz2k•3mo ago
Furthermore, aluminum can be recycled with a lot less greenwashing required.
hamdingers•3mo ago
Post-consumer aluminum has been in common use for wheels for ages, and some major brands (like Trek) are also transitioning their aluminum frames to use recycled material.
mtmail•3mo ago
Reminds me of the hydrogen-powered bike from 2015, which totally made sense if your company is also a leader in hydrogen products. https://www.bikeradar.com/news/this-e-bike-is-powered-by-hyd...

"A regular e-bike battery can take several hours to charge completely, but the H2’s hydrogen cylinder requires just six minutes at a hydrogen filling station." Of course the company wanted to run the filling stations.

nine_k•3mo ago
If we take this as an experiment, it's a useful experiment, showing how expensive and hard this path is. A negative result is a valuable result.
chneu•3mo ago
Plastic recycling is dumb. All it does is keep plastics in the environment and encourages people to use more plastic.

This is just a dumb token gesture to get people to buy a product that doesn't need to exist. This solves a problem nobody has.

simjnd•3mo ago
It's a terrible bicycle. If it was extremely affordable because it's mostly recycled plastic acquired for cheap, then it would make sense as a product but the 1200 EUR price tag is absolutely demented.
taitems•3mo ago
Their poor little servers aren't coping well with the attention. The worst is a 1,004kb image so it's not excessively large.
mchanson•3mo ago
Weight, price, drivetrain all are terrible as others have said you would be much better off spending much less on a simple al bike.
bn-l•3mo ago
Recycled plastic concentrates phthalates and other toxins. The best place for plastic is modern landfill.
userbinator•3mo ago
That looks like HDPE, which normally requires no plasticisers. Better learn some chemistry before spouting hysterical nonsense.

Plasticised PVC, which is where phthalates are used, is not suitable for structural applications like this.

Edit: care to refute? Or do you just want to parrot ignorant talking points without thought.

chneu•3mo ago
Idk about the chemical thing but yeah, throw plastic away.

Recycling plastic is just greenwashing to get more people to use more plastic.

Throw plastic in the trash where it belongs. That's where it's gonna wind up anyway. At least this way you know where it's going instead of thinking it's going off to be magically recycled into magic pixie dust that saves the planet.

lillecarl•3mo ago
You can also burn it for energy, this is what Sweden (and probably our neighbors) do. Yet we're at 0.7x global average CO2 per capita.

https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di...

Do more with the shit you have is a good idea, this bike isn't.

bn-l•3mo ago
Why not sequester that carbon in a beautiful landfill? Let it rest. Peacefully.
rubyn00bie•3mo ago
I don’t get this. Marketing this as an urban bike makes no sense. It’s heavy, looks like it’ll be awful to maintain because so much is custom, and it’s relatively expensive. I rode fixed gears for years because they’re light, easy to carry up stairs, and can take being knocked about or banged up by other cyclists locking their bikes up next to one.

Even something of equal weight like the legendary Surly Long-Haul Trucker is going to last longer and be more practical in every possible application. Maybe if you live somewhere costal and salt will corrode the steel or something it makes sense? I have a hard time believing this would fair better though.

gpapilion•3mo ago
I would think this is for rental fleets or bike share. The weight and design would seem to make sense for that. Though the single speed seems like and odd choice for that.
KomoD•3mo ago
I'm gonna be honest, it's really ugly and expensive. €1200, singlespeed and weighs 17 KG...

Also if you trade it in when it breaks, they only give you €50?

hamdingers•3mo ago
Every "urban" city has at least one bicycle co-op in it full of used bicycles for sale that are lighter, easier to repair, fit better, far cheaper, and best of all already exist and do not need to be manufactured.

Reduce and reuse come before recycle for a reason. This is greenwashing, not environmentalism.

mauvehaus•3mo ago
Can confirm:

Cleveland, OH: Ohio City Bike Co-op https://ohio-city-bicycle-co-op.shoplightspeed.com/

Boston, MA: Bikes Not Bombs https://bikesnotbombs.org/

Somerville, MA: Somerville Bike Kitchen https://somervillebikekitchen.org/

Burlington VT: Old Spokes Home https://oldspokeshome.com

And many, many more.

pimlottc•3mo ago
Chicago, IL: Working Bikes https://workingbikes.org/
grues-dinner•3mo ago
Any consumer trinket that is made from recycled plastic is more or less pointless. At most, you get one more cycle out of that little bit of plastic. Better than nothing, sure, I guess, as long as your thing actually needed to be plastic. Worth all the back-pats and preening website copy? No.

There are practical ways to use less plastic (or any material really):

* Don't sell disposable shit

* Don't sell fragile shit that breaks quickly in the first place

* This often means more things out of metal, or at least thicker plastic. It may mean you need to use a screw to close the case rather than welding it shut or using plastic tabs that snap

* Use materials and designs can can be repaired using standard parts and materials

* Provide spares for less than the cost of replacing the whole damn thing

* And on and on

If your aim is to sequestrate existing plastic to keep it out of the environment, burn it, landfill it or maybe make it into bulk building materials and hide safely it in a non-wearing building (i.e. not a road surface) for 100 years. Putting it back out into the world in a less recyclable form (a common example: cheap and shit fleece jackets proudly made from 50 bottles or whatever - now that's microplastic fibres and definitely will not be recycled ever again) just defers it a couple of years. Especially if the thing you made from plastic didn't even need to be plastic.

dmurray•3mo ago
Building the wheels and frame out of plastic is a fun gimmick, but they're selling this as a low maintenance option that "doesn't rust or require lubrication".

If they really have an all-plastic drivetrain that competes with carbon steel, that seems like a wonderful advance in materials science or mechanical engineering and we'll soon be seeing plenty more applications of this miracle material.

alright2565•3mo ago
It has a Gates belt drive, which has been getting pretty popular with electric bikes due to the very low maintenance requirements.
cluckindan•3mo ago
Great stuff, cities definitely need more microplastics.
heybales•3mo ago
I grind up my 3d printing waste and sprinkle it out my window as I drive down the road, so I got you covered.
yourusername•3mo ago
In addition to being heavy and expensive for the specs it also appears to have terrible aero with the fat frame and triple handlebar supports.
walrusted•3mo ago
we need to stop pretending that this sustainable-washing shit is sustainable. this does not solve "the bicycle". its just another bicycle. not even a better one- its worse. why? plastic is the new asbestos. it drips microplastic everywhere. we dont recycle asbestos into bicycles for a reason. contain or plastic brain