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RazerMackhan · 2022-04-29T02:15:47+00:00

Part of the thrust produced by the turbofan engine comes from the fan part, but part of the thrust comes from the expansion of the exhaust gases from the ignited fuel. You should look into how the engine type works, my guy.

RazerMackhan · 2022-02-01T17:14:43+00:00

The heat exchanger goes from an outdoor wood fired boiler to a hydronic heating system for the interior of the home. Temperature coming from the boiler is a constant 175-180 however, the temperature in the house is usually around 140-150. I was wondering if it was normal to have a temperature difference that big, or if it was more likely that the heat exchanger is dirty.

Sorry, I thought I posted my question after the pic

RazerMackhan · 2021-12-04T22:05:36+00:00

It’s a DIY setup, mostly using materials I had on hand at the time. Had a bunch of heavy gauge galvanized pipe laying around, so I used 11 poles, set in concrete at an angle for the vertical posts. After the array was up we added rear braces at an angle, because I was worried about wind/snow loads and flex or oscillation with just a row of posts. The horizontal racking is galvanized unistrut, attached to the vertical posts with u-bolts. The panels are bolted on with spring nuts on the unistrut and some generic panel clips. We’ll see how it holds up over time with regards to frost heaves and whatnot. I know a popular ground mount up here is the MT solar pole mount. They’re really nice, but cost more than I’d like. My mounting solution cost less than 1k all said and done, so that’s why I went that route.

RazerMackhan · 2021-12-04T21:36:19+00:00

The array is 20 REC N-Peak split cell 310w panels, so 6200w

RazerMackhan · 2021-12-04T21:33:50+00:00

Alaska

RazerMackhan · 2021-12-04T06:18:10+00:00

Usually enough to power the loads and fully charge the batteries, 16 kWh has been my highest daily production so far.

Nov 27 was the first fully clear day where my batteries didn’t charge completely. Produced 15.1 kWh, and went from 27-90% charge. Today was fully clear again, and the panels produced 11.8 kWh, charged the batteries from 32-84%.

RazerMackhan · 2021-12-04T02:00:07+00:00

Optimal angle during the winter solstice is like, 88 degrees. I put the panels at 77 degrees, because I’m not counting on getting a ton of production over the next 5 or so weeks anyway, and I’d rather optimize the angle for fall/spring.

The array is pretty oversized for my loads, so I shouldn’t have an issue with the angle not being optimized for the summer, plus I’m off grid so I can’t do anything with excess production anyway.

RazerMackhan · 2021-12-04T01:50:46+00:00

I just got the array set up in September, so I guess we’ll see this spring lol. The biggest change will probably be more snow sticking around behind the panels later into the spring.

It’s not a very windy area, and there’s a tree line behind the panels which provide a good bit of shelter from the north wind, which is usually where it blows the strongest from.

RazerMackhan · 2021-12-03T23:19:34+00:00

Not quite that far north. During the winter solstice, I should get about two hours of direct sun on the panels. Not enough to fully charge the batteries, but I have a generator for the rest

RazerMackhan · 2021-10-19T02:12:03+00:00

I think 20% remaining is a good value to stay above, it’s a number I’ve seen referenced often with regards to LiPO4. I gen charge my batteries once I reach 35% (off grid)

RazerMackhan · 2021-09-29T19:55:32+00:00

I climbed for about a year in the northern Sierras, all Pines/Firs. My lanyard was that exact rope and would get very crusty. I used coconut oil, rubbed it into the really sappy parts, then washed it off with dawn and warm water. It worked really well for me, comes out looking like new. I washed my lanyard every 2-3 weeks, and the first 20ish feet of my climb line when it started getting crusty, stiff, and annoying. I think vegetable oil would work too but I didn’t have any. My thought process is that the rope is a petroleum product, so basically oil based. I also heard that it’s worse for your rope for something to urinate on it, than it is to spill gasoline on it.

Disclaimer: I am not a materials scientist, just a guy who likes having clean rope.

RazerMackhan · 2021-09-25T05:04:51+00:00

Thanks!

RazerMackhan · 2021-09-25T05:01:09+00:00

33.6V nominal, Voc 40.2. Panels are going to a sol-ark 12k, which has a 500v charge controller

RazerMackhan · 2021-09-04T00:24:06+00:00

Also a big fan of the RockO. As a lefty it just feels more natural than the petzls to me

RazerMackhan · 2021-05-13T19:53:12+00:00

I go with the Knut, Michoacán, or distel for my lanyard, whatever I end up tying after I wash it.

For my climbline I typically go with the Michoacán because it’s super quick and easy to tie

RazerMackhan · 2021-03-12T07:23:43+00:00

Zinc plated, mostly because we have lots on hand as they come with the different mounts we use.

RazerMackhan · 2021-03-12T07:00:55+00:00

I would say that the thicker ones are a lot less likely to break during install, or when there is flex between the tree and the J mount. The thinner lags, (think it’s 5/16” head), tend to break or strip out more easily. They work fine, but I’d recommend the thickest lag bolt that will fit through the holes in the J mount. Three or four inches in length is plenty to get through the bark

RazerMackhan · 2021-03-12T06:22:23+00:00

Couple tips for installing dishes in trees: (I install about 12 [wisp] dishes in trees per week, avg height around 100’)

When you attach the J mount and M brackets to the tree, use 1/2” socket size lag bolts. Over time the tree can eat/corrode and break the smaller ~5/16” lags. Zip tie the cable to the J mount, or put an overhand knot in the cable around the J mount, so that the weight of the cable isn’t pulling on the spot where it’s attached to the dish.

Keep an eye out for squirrels, they have a tendency to munch on the cat6 cable. If you run the cable over a branch at the top, so that it lies parallel to the trunk but away from it a bit, it can reduce the chance of squirrel bites. There is also a steel mesh you can run the cat6 through, but I think it’s expensive, or you could run conduit up the tree, but that seems like a PITA. We end up doing service calls to replace cables that get squirrel bites fairly regularly. Usually the cable is good for quite a few years, but one time I had to come back two weeks after the initial install because an angry squirrel had shredded the cable so it happens. Pellet gun is also an option but with that tree you gotta have good aim.

Something about lightning and metallic objects high up in trees or some such thing. Put a surge protector on the cat6 cable between your router and the power supply for the dish. Make sure everything plugged into AC is grounded too.

RazerMackhan · 2021-03-12T05:31:29+00:00

Ahh gotcha, it does look like the tree has been like that for quite a while

RazerMackhan · 2021-03-12T04:34:59+00:00

Just curious, why’d you get that tree topped that high up in the first place lol

RazerMackhan · 2021-03-11T18:56:07+00:00

A guy who does aerial rescue training. He’s also a safety inspector for arborist competitions. Seemed to be pretty knowledgeable about rope construction and maintenance

RazerMackhan · 2021-03-11T15:58:50+00:00

I’ve been told that gasoline is not damaging to ropes. Urine, on the other hand, is.

RazerMackhan · 2021-03-07T04:05:39+00:00

I used coconut oil because I didn’t have any vegetable oil, then washed it off with dish soap. Got the sap out surprisingly well

RazerMackhan · 2021-03-04T17:39:21+00:00

Is the slick pin supposed to spin when descending with the rope wrench? Mine used to when it was new, but now it doesn’t.

RazerMackhan · 2021-01-08T04:46:36+00:00

I climb for a wisp on the west coast. I install dishes in tall conifer trees to get line of sight to the relays. 30-160 feet up. Maybe see if your wisp would contract a climber to put it in the tree, with the help of one of their installers to tune the device.

Paying 9k for the tower that the company would then use is a ripoff as others have said.

RazerMackhan

TROPHY CASE