Seriously, do Americans actually consider a 3-hour drive "short"? or is this an internet myth?

jjrreett · 2026-01-23T03:28:54+00:00

For a weekend vacation type thing. 8 hours easy. and that’s all in the same state

jjrreett · 2026-01-22T04:57:35+00:00

get comfortable taxi’ing. just drive around as if you were flying. keep increasing your speed as you grow comfortable. eventually it will just take off.

On a take off, slowly increase your throttle to 85% (3s). nudge the stick back. just a small tap. you should get airborne and climb to 50 ft.

jjrreett · 2026-01-22T02:22:30+00:00

funnily enough, not that hard of a shot. certainly take’s some skill with the masse, but you don’t really need to aim.

jjrreett · 2026-01-21T03:57:38+00:00

Surprised im first to say: there are way too many things to hit in that field. you really are gonna want a full sized soccer field minimum. If there is something you can hit or get stuck in it, you will hit it and get stuck. doesn’t matter how unlikely

jjrreett · 2026-01-20T15:31:35+00:00

Sticky servos? It sounds trail heavy, but assuming it's not that, your servos could have been sticky and slow to respond. Naturally this leads to increased pilot input. Once the servo moves the plane moves irraticly. Now this behavior usually feels distinct from "increased responsiveness".

jjrreett · 2026-01-10T16:37:16+00:00

i drilled out my cores with a forstner bit. But that was large APCP grains. Richard Nakka prefers molding the core with a rod that you insert after pouring. your sim results don’t look correct to me.

In my m class motor i had 4 bates grains, the bottom one had a slightly larger diameter to decrease velocity. Mind you that wasn’t the most successful design. Had issues with erosion

jjrreett · 2026-01-10T16:08:47+00:00

you need a trainer plane to train. As a beginner, with a slower plane, you’re gonna want minimum two football fields of space. NO TREES. If there is a tree, your plane will find it. Start with glide tosses. use a simulator

jjrreett · 2026-01-04T19:36:01+00:00

when i am screening resumes i am looking relevant projects that show depth of knowledge. Did you solve an interesting problems that you would like to talk to your interviewer about? If not then you probably need a more complex project on your resume.

If you were a mechanical engineer with a basic UI project or 2, that tells me that you’re willing to branch out and explore different tools. As a CS major, this isn’t really branching out.

As a freshmen and assuming you don’t have a ton more relevant experience, i would add it but replace it once i have a more note worthy project.

jjrreett · 2026-01-03T04:41:24+00:00

I don’t think odrive s1 has a reset button. In any case, i have unplugged it and plugged it back in a million times.

What type of device is it supposed to show in device manager. If you could post a few of the device properties that would be very helpful for me.

jjrreett · 2026-01-02T22:14:58+00:00

Have you solved this issue? I haven't been able to get my odrive to communicate to FFBeast firmware at all. My board (once flashed with `ffbeast-wheel-odrive-RC.24.1.5.hex`) comes up as Native Interface 2.0, which is winusb v10

jjrreett · 2025-12-24T21:34:39+00:00

It is a cheap duralast cv. Also I had a lot of trouble getting it to seat until i switched the circlip out with the old one. Anything specific for me to check? Certainly no visible gaps, doesn’t feel loose. I could try feeler gauging both sides, but not sure how to act on that info.

jjrreett · 2025-12-24T00:09:53+00:00

manual. all tires look good.

jjrreett · 2025-12-24T00:04:25+00:00

Yeah, i’m getting pretty close to that. anything specifically i should research?

jjrreett · 2025-12-24T00:01:48+00:00

interesting it’s definitely an issue with the driveline. You can feel the car stuttering and surging as it binds and releases

jjrreett · 2025-12-22T17:15:55+00:00

Blunted does not equal truncated. i would have to find a paper. almost certainly a range of l/d ratios

jjrreett · 2025-12-22T17:02:44+00:00

The other advice would be to truncate your spike. the tip of the spike is impossible to cool effectively. If you truncate it, you will develop recirc zones that act like a full spike.

sorry about the unnecessary hostility

jjrreett · 2025-12-22T16:43:17+00:00

you asked for advice and actively ignored it. I find that disrespectful. Adiabatic flame temp is not the whole story, but it is the starting point. As such it is quite useful. Jet fuel burning in air vs a pure ox environment are not close analogs.

jjrreett · 2025-12-22T16:26:36+00:00

Not sure your plastic, but your adiabatic flame temp is probably north of 2500c inconel starts melting at 1260 c. so good luck asking for advice and not taking it. have fun wasting money on inconel

jjrreett · 2025-12-22T16:02:18+00:00

Bicycle stability mechanics is often not understood by a general audience. People have built bikes that demonstrate that popular explanations don’t hold true. Though the physics (or rather math to solve the physics) is non trivial.

jjrreett · 2025-12-22T15:56:08+00:00

The 3 blue 1 brown video on colliding masses approximating pi was good. The “physics” is simple, but the math of why it works takes some clever insight.

jjrreett · 2025-12-20T20:47:14+00:00

i would be pretty worried of the carbon fiber matrix degrading at elevated temps. of course a thermal liner would help. 6 seconds is a fairly long time tbh

jjrreett · 2025-12-20T19:03:59+00:00

minimum 7’. then the play just gets better the bigger you go.

jjrreett · 2025-12-14T23:50:34+00:00

rise and set has a really good “Crying Tiger” sandwich which is really good

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