nerobro

needs more upvotes

You're missing the whole latent heat thing that comes with phase change. Most of what you're describing is akin to the air pack you find on an airliner. They do the air conditioning with just squeezing gasses and heat exchangers. They are practical on airliners ONLY because they have a ready supply of compressed air, and when you're burning megawatts of fuel, a few hundred kilowatts of compressor losses are "in the noise". The magic of heat pumps is in the phase change. The critical thing that nets you the near magic heat pumping ability with heat pumps, is the boiling and condensing of the gas and liquid. Also note, you can't practically compress liquids, so your explanation falls apart when suggesting you compress a liquid.

So you're on your ebike, going 15mph. Using 140w or so. You're spending 15-20w on the drivetrain, and the remainder is entirely aerodynamic drag. You're putting 120-125w into making wind move. You're also losing 5-10 watts to the drive electronics and dashboard. So your total power use is 150w.

If you're going to recharge a battery. In the same time it takes to ride, you need to get at least 150w of power into another battery. Sadly, batteries don't actually "just cleanly charge" there are some losses, but since we're going to take an hour to charge it, lets call it 5%. So to fill up that battery we need 157watts of input power.

Your bike, moving at a steady speed, is absorbing 150w of power. If we want another 155w of power, where is that going to come from? If we take it from.. say.. the front wheel, we are now absorbing another 155w of power. So to maintain the same speed, we now need to push the bike along with 305w of power. And.. now we need a bike that makes 305w of power, to go the same speed we were going with 150w. .... And we're only generating 155w.

There is no free lunch. If you're doing work, you need to get that power from somewhere.

In specific, 12ga, with some sort of buckshot. You don't wanna hurt someone because you gave them shells with slugs in them and they have a gun with a tight choke in it. At least, if you're going to stock it for "currency"

I hope you have some sort of therapist to talk to, because this is.. gonna take some work.

Forget the "why". Being there and saving the life of people directly connected to you is traumatic. Full stop. PTSD? I mean, maybe not, but trauma? yes.

There's a lot going on here, and the only reasonable response is advice. You need advisement. You also need to settle the "why". Why the rest of the family isn't concerned? If it's "normal" there's a normalization aspect that needs investigation. Why you have had to do the Heimlich on multiple family members? That speaks to it being something specific about ~your~ family. Why is it YOU who's doing it?

Exactly none of this is normal. Yes, you are having the natural reaction to having family almost dying in front of you. You need to figure out the rest. The other symptoms will either make sense, or go away, if you settle the rest.

TL;DR: You want an AR with a red dot, or holographic sight. And something autoloading in 9mm, ideally with some sort of optic. The Pistol is more relevant.

Now I have a lot to say. We're gonna start with why I made my choices. I have a rifle in 22, in 556, a shotgun in 12ga, and a pistol in 9mm.

I went with an AR, in 556, because that's the default rifle in the US. If you're joining a club, you should have the standard equipment for that club. It's the most common, and the most common chambering. 223 or 556 can be found anywhere. Being common, the ammunition is cheap-ish. It's also quite light as rifles go, fitting your requirements well. An AR in 556 can be had from $450-4000, with most in the $550-1200 range. Mine is made of trash, and litterally hasn't failed in a way that wasn't directly operator error. We'll come back to why this is a good choice for you, at the end. I'm about $900 in on mine, including everything I've bought and then passed on.

I have a AR clone, in 22lr. This is so I can practice for $0.07 per shot, instead of $0.57 per shot. The manual of arms (Read: how you operate it) is the same. The furniture is the same. (Furniture is stock, grip, foregrip, accessories..) so I can train with it, and still instill the same.. behaviors. I have a Hamerli Tac R1. It was $400 I think, and I have another $100 of "stuff' on it.

Both guns have a LPVO (Low Power Variable Optic) which is a adjustable scope designed for "useful" combat ranges. I'm not entirely sure that's the right decision yet, but it's much better than the $20 red dots I had on them. LPVO's give you the opportunity to zoom in on things that are "out there" so you can make better decisions. Ideally, saving you from having to DO anything. I think that's a really important point. Almost as important as.. the next.

You wrote you're looking for a rifle, rifles require.. a plan. You're not going to be "somewhere" and decide you need your rifle and have it. You need to plan for it. Pistols however... you can just kinda throw in the bag, in the car, on your person. While a rifle is a good thing to have, you're more likely to get (as grizzly as it sounds) actual use out of a pistol.

I went with a Canik TP9 because... well. about 70% the dude on the other side of the sales table said he liked it. He wasn't wrong. It's more or less a Walther p99 clone, and while not as nice.. still quite good. Better than I am at least. 18 rounds available, full size, trigger based safety with a nice trigger feel. It came with two magazines and a holster. It's a bit heavy, but heavy isn't bad for a pistol as it reduces the felt recoil. It's good. I'll list what I've shot and my opinions later, so you can judge me silently later. :-) It was about $600, IIRC.

I also bought a Taurus G3c. I went in expecting trash, and walked out the door for less than $270. I can't reasonably carry the Canik, without it being clear I'm carrying, the Taurus is concealable. It's a lot lighter, but recoil hits a lot harder. It is however, Nero compatible, and I'm quite accurate with it. The shorter length does make the sight radius shorter which doesn't help things. It holds 12 rounds.

My opinions are based on the moderately wide range of pistols I have shot. 50AE, 45, 9mm, 270 Winchester (yes, really..), 22lr, and 380. There's been two revolvers, and I don't recall their chambering.

Ok, specific recommendations:

Pistols: What you're looking for in specific is a double stack, striker fired pistol. Chambered in 9mm. People have said Glock 19, they're right. It's like buying IBM, nobody can say you made a bad decision. If you're budget minded, also look at the PSA Dagger. It's a Glock 19 gen 3 clone that seems utterly unproblematic. It's been on the market long enough that we'd know if it had issues. My personal choice of Canik is also good. Don't get something with a hammer.

Rifles: Oh boy, everyone and their brother makes an AR. Get it in 556/223. Palmetto State Armory, Smith and Wesson, Springfield Armory, litterally a dozen other major manufacturers. As long as it takes mil spec hardware, you should be fine. Being a military specification, tons of people have made them. You want a flat top version, so you can mount your choice of optic. Buy a few magazines.

Finally, you have "a" gun. Go to the range, and rent a few guns. A bunch of guns. Some shops have done a $20 or 30 fee, and I could just trade through what they had in the rentals. Other places it's $20 per gun. Either way, it's good to try everything out you can. Learn what you like. If a glock feels like holding on to a 2x4, move on. If a Taurus G3c bites the web on your thumb, find something else. If your hands can't do a double stack, the Glock 43 and other subcompacts exist.

Welcome to the resistance.

Little Nazis is a name reserved for those who turn a blind eye. "It's ok for me.. now." "I felt safer." "They don't care about me or my family." "They buy my goods."

This is a very bad take. LLM's, appear to be at their limit. They're autocomplete and are only as good as their inputs. They can't be depended on for truth. They can't be trusted to even do ~math~.

LLM's work as a place to bounce things off of, but still require editorial work afterword, even when they are working their best.

LLM's take huge amounts of power, both to make run, keep running, and to correct their output.

In general LLM's don't significantly reduce labor, and they are still ~very costly~.

Even the most basic assembly line multiplies someones output. The best assembly lines remove almost all human labor. Even bad assembly lines are wholesale better than individual assembly.

As long as it's LLM, I don't believe it will ever be "useful". We need a different technology to make this sort of assistance useful.

Depends on the engine. Small 2 strokes usually use premix. Big ones, like on scooters or motorcycles, usually have an oil pump and an oil tank. You add oil every few thousand miles.

You're showing signs of profound hearing loss in the mid and high ranges. You really should get your ears checked. For real. This is ~outside~ the complaint you're making.

What you're not hearing, are the thousands of 250 -500cc learner bikes. Those yamaha FZ6's, Honda Transalps, ST1300s, BMW GS's, K and R series, even the wild high end sportbikes are quite quiet at mild power levels.

My personal bikes? all have stock exhausts. They're less noisy than my idling Jeep Cherokee, and it too, is dead stock. (though it is a very loud machine at idle) "I" am not the problem.

I am in this situation with a family member. I asked for an apology for their behavior, and I got the flippant "I'm sorry" and "can we move on." The reality is I'm.. unable to move on until the situation is settled. "I require an apology for your behavior, both in words showing you understand why this is a problem, and the appropriate change of action."

We are still trying to sort this out. It may not go well. WHEEEEEEEE

They are not very rare, loud cars, that is. Harleys.. maybe.. but that's a story on it's own.

Actually, I'm now quite convinced you have profound hearing loss. If the ONLY big noise you hear day to day, is motorcycle engines, I think you're missing a lot of the soundscape. I'd be willing to bet you have some real loss in the high and midranges. Get it checked out, if that's the case, you're going to need to protect what you have left.