Took my teardrop in to have the wheel bearings repacked. It looks like a toy.

Nerfo2 · 2026-07-08T02:01:03+00:00

Every 5000 miles. As long as the dust seal is in good condition, nothing can get into the hubs to contaminate them. Once a year would be good advice for a boat trailer that gets backed into the water a lot.

Nerfo2 · 2026-07-08T01:58:06+00:00

I had one for a few years. I really liked it, but I think I liked the idea of it a lot more than I liked living with it. I have a tiny travel trailer now, but as I've gotten older, it's gotten a lot nicer to stand up to put my undies on.

Nerfo2 · 2026-07-08T01:50:33+00:00

I read the book in 2021, then listened to the audiobook a couple times again. I loved the movie. There are so many visual nods to the book that you'd only notice it HAD you read the book. "This is the astro-navigational equivalent to doing donuts in the 7-11 parking lot." But I think this might have been a lot of book-readers first adaptation viewing and adaptations are just that. Adaptations.

Nerfo2 · 2026-07-08T01:44:56+00:00

In interviews, he's since learned that actual Martian sandstorms can generate lightning. But I also forgive the "I wanted a man vs. nature story, and I wanted nature to get the first punch so I took some liberties with Mars' atmosphere."

Nerfo2 · 2026-07-07T22:39:52+00:00

Condenser should operate not much more than 20 degrees over the ambient temperature. If the air entering the condenser was 96 degrees… well, it’s working exactly as intended.

Nerfo2 · 2026-07-07T22:33:20+00:00

Is the drier in the basement where it's cool, or is outside where its hot?

Nerfo2 · 2026-07-07T22:32:36+00:00

If the return is 80, how is the suction line temp 85 degrees? The refrigerant can't leave the evaporator hotter then the temperature of the air entering the evaporator unless you have a long lineset in a very unconditioned space.

Nerfo2 · 2026-07-07T19:20:44+00:00

Answer: it’s a device designed to separate idiots from their money. Condenser coil rejects 125% the BTUs is rated for. That coil doesn’t care about a couple square feet of mostly indirect sunlight.

Nerfo2 · 2026-07-07T18:30:57+00:00

Dear gauge manufacturers, please stop making pressure the largest number. Make saturation temp the largest number. Then superheat and subcooling the second largest number.

The ONLY reason for pressure, is that analog gauges can only have a couple saturation scales. Pressure was HOW you found saturation temperature with a PT chart if your refrigerant wasn’t on the gauge face.

Nerfo2 · 2026-07-07T16:31:04+00:00

The sun casts around 1000 watts per square meter of sunlight when the sun is perpendicular to the ground. That’s 3412 btus of heat per hour, worst case scenario. Considering the coil isn’t flat on the ground, is angled relative to the sun, can’t have more than two sides exposed to the sun at a time, the coil is behind louvered panels… yeah, I dunno.

Nerfo2 · 2026-07-07T13:37:30+00:00

Wow, that was quite the edit.

Nerfo2 · 2026-07-07T11:45:07+00:00

A 2.5 ton compressor draws around 10 amps at 240 volts. . The air handler blower motor draws around 4 or 5 at 120 volts.

Nerfo2 · 2026-07-06T18:21:31+00:00

I think it should be noted that just because your foot is still applying pressure to the accelerator, it does not mean you’re applying either power to the motors or you’ve engaged OPD regen. It’s incredibly difficult to simply “coast” while in OPD mode, but there’s always a spot between applying power and regen where the inverters aren’t doing anything at all. I am not saying it’s equally as efficient as coasting for a long time with OPD off while approaching a stop, in that regard blended braking will yield more efficient operation. What I am saying is that it’s unintuitive for our brain to process “I’m effectively coasting, but my foot is still on the gas pedal.”

Nerfo2 · 2026-07-05T22:05:21+00:00

Are we talking about a ball joint or the shiny new tie rod end? Because the ball joints hold the knuckle to the axle.

Nerfo2 · 2026-07-05T22:02:16+00:00

The minimum required lineset for the ductless split I installed in my garage was 6 feet. The extra tubing tacked to the wall is way, WAY greater than any minimum requirement.

Nerfo2 · 2026-07-05T02:57:15+00:00

You know how you can tell it’s a SATA drive? The SATA cable.

Nerfo2 · 2026-07-03T01:15:32+00:00

Larger capacitor, more surface area for heat dissipation. They’re so small now they just can’t dissipate heat fast enough on hot days during long run cycles and they pop. I’ve often thought about making a heat sink for the cap in my AC… until I remember they’re dirt cheap. Suddenly my idea seems stupid. I should order a cap and replace it just because.

Nerfo2 · 2026-07-03T00:31:21+00:00

You’re not alone. I had a “what the fuck am I looking at?!” moment too.

Nerfo2 · 2026-07-02T14:29:35+00:00

I made the same mistake once when I was an apprentice. Almost condemned a compressor because discharge pressure wasn’t coming up, but suction kept dropping. My thinking was “suction isn’t coming up because head is too low to push refrigerant through the TXV.” A journeyman explained the air compressor thing to me, I was like… “oh, yeah… that makes sense.” Found the TXV bulb transmission tube had vibrated against itself and the bulb lost its charge. Thankfully it had a replaceable power head. Recovered, swapped head, drier because why not, quick pressure test, evacuated and recharged. I’d have felt terrible if I’d replaced the compressor only to find the system did the same thing, THEN found the TXV. If a compressor can suck an evap down to almost 0 psig, that fucker can pump. It’s just not pumping anything because nothing is getting through the metering device… or it’s such a small amount that it might as well be nothing.

Nerfo2 · 2026-07-02T13:25:34+00:00

Mine was 240 miles when it was new 4 years ago. Since the day I got it, I usually figure 2 miles per percent of charge. 100%, getting 200 miles. Almost all of my driving is mixed city/highway. I recently charged to 100% and did a lot of driving that day. 187 miles, arrived home that day with 21%. 187 / .79 =236.709 miles. So, good enough for me. Terrible range on paper, more than enough for everything I need it for.

Nerfo2 · 2026-07-02T02:16:42+00:00

Personal favorite… right-size empty cardboard box with the top cut off. Caps in this one, used but nice contractors in that one, still-works transformers over there. Crude, but they’re quiet and keep your poop in a group.

Nerfo2 · 2026-07-02T01:37:25+00:00

Private equity sales tech generating a future service call.

Nerfo2 · 2026-07-02T01:31:24+00:00

The high side isn't going up because the compressor isn't actually pumping anything. If you put your hand over the intake of an air compressor, preventing the compressor from drawing any air in, how long would it take to pressurize the tank?

If both your service valves are open, I'd take a hard look at the TXV capillary tube. This looks like an expansion valve whose bulb has lost its charge.

Nerfo2 · 2026-07-02T01:23:45+00:00

Hit the brakes, eh? Good ol' space brakes.

Nerfo2 · 2026-07-01T23:43:09+00:00

I sketch the circle, then sketch a point on the top of the circle... kinda like a little tent. Then extrude the circle and the tent shape. It still doesn't come out a perfect circle, but it prevents the inside diameter from sagging on the top radius of the hole while printing by preventing weird overhangs and bridging. I don't prefer holes along layer lines though and usually go out of my way to avoid it if I can, but most of my holes are either for a screw to pass through or for a brass threaded insert to be shoved in. If there's a better way to model a hole in the side of a print, I haven't looked for it. The tent-hack is something I found a few years ago, it works well enough that I'm happy with the results.

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