dr2chase
@dr2chase.bsky.social
Not a physician, utility-bikes a lot (~5000km/year), DFH, works on Go compiler. (I do not speak for my employer.) Sometimes know things about programming languages, (cargo) bicycles, lilies, Florida.
He/him. Ex(?) Florida Man.
Now near Boston, MA, USA.
He/him. Ex(?) Florida Man.
Now near Boston, MA, USA.
Somerville Market Basket today:
November 9, 2025 at 1:40 AM
Somerville Market Basket today:
This compiler-writer (who used the paper mail to order this when he was in high school) knows the difference.
November 7, 2025 at 5:32 PM
This compiler-writer (who used the paper mail to order this when he was in high school) knows the difference.
I keep that location in my weather app in case I start to feel bad about Boston weather. This week only loos medium deadly, might not even get frostbite.
October 29, 2025 at 1:11 PM
I keep that location in my weather app in case I start to feel bad about Boston weather. This week only loos medium deadly, might not even get frostbite.
I moved this bed a year earlier in flatpack, with no e-assist. It was much, much easier with e-assist (750W Tongsheng TSDZ8).
I need the exercise, so my rule (for me) is I need at least two reasons to use the e-assist cargo bike, other I use the meat-bike (which is also a cargo bike).
I need the exercise, so my rule (for me) is I need at least two reasons to use the e-assist cargo bike, other I use the meat-bike (which is also a cargo bike).
August 12, 2025 at 3:47 AM
I moved this bed a year earlier in flatpack, with no e-assist. It was much, much easier with e-assist (750W Tongsheng TSDZ8).
I need the exercise, so my rule (for me) is I need at least two reasons to use the e-assist cargo bike, other I use the meat-bike (which is also a cargo bike).
I need the exercise, so my rule (for me) is I need at least two reasons to use the e-assist cargo bike, other I use the meat-bike (which is also a cargo bike).
BPM fat-tired e-trike (with rumble seat!) is already street legal many, many places. I don't understand why these aren't taking over .
August 11, 2025 at 1:20 PM
BPM fat-tired e-trike (with rumble seat!) is already street legal many, many places. I don't understand why these aren't taking over .
16-year-old Big Dummy got a Tongsheng TSDZ8 e-assist makeover. Got the limit set to legal, tested that it was limited, tested it up a 16% grade, all good. Pretty quiet motor, too.
August 3, 2025 at 1:05 AM
16-year-old Big Dummy got a Tongsheng TSDZ8 e-assist makeover. Got the limit set to legal, tested that it was limited, tested it up a 16% grade, all good. Pretty quiet motor, too.
What's wrong with this picture?
July 29, 2025 at 12:47 PM
What's wrong with this picture?
Compare US and EU road safety outcomes. European governments (and Japan and UK) generally do a much better job at road safety, I would (if I cared about safety, which I do) respect their choices.
www.itf-oecd.org/sites/defaul...
This is just (EU) deaths for (US) dollars.
www.itf-oecd.org/sites/defaul...
This is just (EU) deaths for (US) dollars.
July 28, 2025 at 1:20 PM
Compare US and EU road safety outcomes. European governments (and Japan and UK) generally do a much better job at road safety, I would (if I cared about safety, which I do) respect their choices.
www.itf-oecd.org/sites/defaul...
This is just (EU) deaths for (US) dollars.
www.itf-oecd.org/sites/defaul...
This is just (EU) deaths for (US) dollars.
A car (electric or otherwise) produces about 1/10 of a gram of tire dust per mile (it's just math done on tire wear and an estimated lifetime of 50,000 miles).
July 23, 2025 at 1:55 PM
A car (electric or otherwise) produces about 1/10 of a gram of tire dust per mile (it's just math done on tire wear and an estimated lifetime of 50,000 miles).
Using (cargo) bikes to get shit done. Had to pick up the car after getting new tires installed, so on the way home from work swapped cargo bike for car at the gas station, drove home, rode the 3-speed back to the garage, and towed it home behind the cargo bike.
#cargobike
#cargobike
July 23, 2025 at 2:14 AM
Using (cargo) bikes to get shit done. Had to pick up the car after getting new tires installed, so on the way home from work swapped cargo bike for car at the gas station, drove home, rode the 3-speed back to the garage, and towed it home behind the cargo bike.
#cargobike
#cargobike
About 40 years ago, when I was still a floundering gradual student, after work I would ride my bike up Quimby Road to improve my mood and on this day, there was a big fire in the Santa Cruz Mountains (at work, it filled the sky).
June 26, 2025 at 11:47 PM
About 40 years ago, when I was still a floundering gradual student, after work I would ride my bike up Quimby Road to improve my mood and on this day, there was a big fire in the Santa Cruz Mountains (at work, it filled the sky).
And we know that at least some hospitals aren't default HEPA filtered *because someone ran the experiment of adding a HEPA filter to a (Cambridge, UK) hospital room and measuring without and with, and without, the air had literal shit in it.*
academic.oup.com/cid/article/...
academic.oup.com/cid/article/...
February 28, 2025 at 1:56 PM
And we know that at least some hospitals aren't default HEPA filtered *because someone ran the experiment of adding a HEPA filter to a (Cambridge, UK) hospital room and measuring without and with, and without, the air had literal shit in it.*
academic.oup.com/cid/article/...
academic.oup.com/cid/article/...
I am terrifically depressed that this sign appears on a chocolate shop in Madrid, but in no place that I have visited in the last 5 years in the US. WTF, hospitals?
(We have clean air where I work, we verify this with an AQM, because facilities won't commit to a number.)
(We have clean air where I work, we verify this with an AQM, because facilities won't commit to a number.)
February 28, 2025 at 1:56 PM
I am terrifically depressed that this sign appears on a chocolate shop in Madrid, but in no place that I have visited in the last 5 years in the US. WTF, hospitals?
(We have clean air where I work, we verify this with an AQM, because facilities won't commit to a number.)
(We have clean air where I work, we verify this with an AQM, because facilities won't commit to a number.)
That is, given that we observed 4 CyberTruck fire deaths across 35,000 vehicles, it is very unlikely that the CyberTruck is as safe as (or safer than) a Ford Pinto.
Gemini, which lets me link to a conversation: g.co/gemini/share...
Gemini, which lets me link to a conversation: g.co/gemini/share...
February 21, 2025 at 3:26 AM
That is, given that we observed 4 CyberTruck fire deaths across 35,000 vehicles, it is very unlikely that the CyberTruck is as safe as (or safer than) a Ford Pinto.
Gemini, which lets me link to a conversation: g.co/gemini/share...
Gemini, which lets me link to a conversation: g.co/gemini/share...
Our lovely bicycle infrastructure (and sidewalk, and bus stop).
So glad I'm using a studded tier on a very stable bike, so glad I've been practicing this for 18 years. My upper back is a little sore, though.
So glad I'm using a studded tier on a very stable bike, so glad I've been practicing this for 18 years. My upper back is a little sore, though.
February 21, 2025 at 1:53 AM
Our lovely bicycle infrastructure (and sidewalk, and bus stop).
So glad I'm using a studded tier on a very stable bike, so glad I've been practicing this for 18 years. My upper back is a little sore, though.
So glad I'm using a studded tier on a very stable bike, so glad I've been practicing this for 18 years. My upper back is a little sore, though.
Sprinkling ice patches with CaCl2 on the morning commute, as one does.
February 5, 2025 at 9:24 PM
Sprinkling ice patches with CaCl2 on the morning commute, as one does.
At 36,000 RPM on the proper axis (if I recall correctly), this is a sphere. It is also made of beryllium, hollow, and (IIRC) weighs 9 grams. (Yes I washed my hands after taking this photo.)
January 28, 2025 at 1:58 AM
At 36,000 RPM on the proper axis (if I recall correctly), this is a sphere. It is also made of beryllium, hollow, and (IIRC) weighs 9 grams. (Yes I washed my hands after taking this photo.)
In addition to shoveling snow, I also finished a new taillight, complete with capacitor for a sort-of stand light.
January 20, 2025 at 11:25 PM
In addition to shoveling snow, I also finished a new taillight, complete with capacitor for a sort-of stand light.
Sewed myself an experimental face mask for next week’s weather (I would be happy if it were as balmy as DC will be). I used an old laser-cut bit where the scale was off (too large, filter would not fit) and put air holes out at the tip, facing down away from glasses.
January 19, 2025 at 3:29 AM
Sewed myself an experimental face mask for next week’s weather (I would be happy if it were as balmy as DC will be). I used an old laser-cut bit where the scale was off (too large, filter would not fit) and put air holes out at the tip, facing down away from glasses.
Managed to get to Davis Square and back (groceries at McKinnons and HMart) before the drip got too aggressive. Also, new phone, trying the camera. Really looking forward to the weather next week.
January 19, 2025 at 1:19 AM
Managed to get to Davis Square and back (groceries at McKinnons and HMart) before the drip got too aggressive. Also, new phone, trying the camera. Really looking forward to the weather next week.
Got that covered, too. From Jennifer Berman ( www.bermancartoons.com )
January 15, 2025 at 2:07 PM
Got that covered, too. From Jennifer Berman ( www.bermancartoons.com )
Normalizing bike stuff. Yesterday, dropped off an instant pot with kid who lives 2 miles from work, by bicycle. It was around 25F/-3C. Another day, just riding home, same weather, saw other people doing the same, in the dark, with lights, stopping for both red lights and pedestrians in crosswalks.
January 8, 2025 at 1:16 PM
Normalizing bike stuff. Yesterday, dropped off an instant pot with kid who lives 2 miles from work, by bicycle. It was around 25F/-3C. Another day, just riding home, same weather, saw other people doing the same, in the dark, with lights, stopping for both red lights and pedestrians in crosswalks.
Yeah, transportation is larger than electricity in the US, and 80% of transportation is cars and trucks. Numbers, dammit, numbers.
(Pie chart sources:
www.epa.gov/ghgemissions...
nepis.epa.gov/Exe/ZyPDF.cg... )
(Pie chart sources:
www.epa.gov/ghgemissions...
nepis.epa.gov/Exe/ZyPDF.cg... )
January 2, 2025 at 5:15 PM
Yeah, transportation is larger than electricity in the US, and 80% of transportation is cars and trucks. Numbers, dammit, numbers.
(Pie chart sources:
www.epa.gov/ghgemissions...
nepis.epa.gov/Exe/ZyPDF.cg... )
(Pie chart sources:
www.epa.gov/ghgemissions...
nepis.epa.gov/Exe/ZyPDF.cg... )
Didn't know, I just took what Google Maps offered for a bike route. That's a much safer route, might want a cargo bike for a cello, though, hard to say (though I've seen backpacks for cellos and larger).
December 30, 2024 at 10:17 PM
Didn't know, I just took what Google Maps offered for a bike route. That's a much safer route, might want a cargo bike for a cello, though, hard to say (though I've seen backpacks for cellos and larger).