at least on safety-related topics. I enjoy his rants about other things, and experimentation is a great way to improve knowledge, but if his pontifications at face value could lead to someone gutting a helmet and replacing it with shipping foam or bisected racquetballs or something
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I share this link every chance I get, and this seems like a good time to share it: https://www.helmet.beam.vt.edu/ I’m sure this methodology could be improved on in some small way, but it’s leaps and bounds ahead of the regulations.
I also enjoy that GP cites the inflatable helmet “developed by the swedes” in his blog: Airbag cycle helmet firm Hövding files for bankruptcy after consumer watchdog orders product recall and bans sales | road.cc
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Dude tests his own helmets
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oh no
stick “rivendel getting sued out of existence in 2030 for selling homeopathic bike helmets” on your bingo cards
EPS—and this is according to EPS makers and high-volume sellers—is also good at impact resistance. In other words, it holds its shape, which is why stereo equipment often comes packed in a customized molded Styrofoam form inside the corrugated box.
what, Grant thinks the stereo makers aren’t doing their best to protect their stereos in the shipping boxes??? Like this should be a datapoint that bike helmet makers are actually on the right track.
Grant seems to want something that’s “squishy”, but for good impact attenuation (maximizing energy absorption/minimizing peak deceleration), you want a material that plasticly deforms rather than elastically: something that permanently crushes rather than bouncing back. And for the speeds and masses involved in bike helmets and heads, that’s going to feel very rigid in the hand…
(football helmets need to work over and over so they can’t plasticly deform, so instead they put a lot of work into carefully damping the compression and rebound. But the tradeoff is size and weight…)
oh hey i am working with those people on some non-helmet impact attenuation studies
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What I wouldn’t give to have one one-millionth of the confidence of a man who looks at the entirety of a gigantic industry full of educated professionals and loudly proclaims that every one of them is doing it wrong.
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I tried to get them to present at a conference session I was hosting last year on pedestrian and vulnerable road user safety but they seemed disinterested. Been looking for a way to work with them professionally, as I do pedestrian (and cyclist) safety.
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I would like to see their test data integrated with some other helmet test metrics like ventilation and weight for easier comparison. maybe filter by road/mtb/commuter as well
There’s definitely some things you have to flat out ignore Grant when he blurgs about it. Style, safety, shoes, things like that.
He’s right about Rapid Rise being great though
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Nightmare blunt rotation.
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Oh man what is the source of that?
Calling in Sick Magazine…lots of pvd veneration going on there.
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Omg is my name Bicycle Pears now.
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The algorithm showed me them. I bought the latest two issues…haven’t read much yet but they have cool photos/art.
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I just bought the latest two issues as well, and a wallet so I can get a cat drivers license fridge magnet
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it has been really interesting to see this going from Adom’s photocopied grunge zine “i am bored WFM in early 2020” project, into something with adverts that non-bay-area-people pay to read
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I love a good zine so if y’all have more suggestions lemme know
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this is the other bay area cycle zine I’m aware of, which similarly went much more pro over the past 3+ years: https://lowpressure.bigcartel.com/
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Challenger is a great bmx zine