Search results

Gel and AGM are both considered non-spillable so safe in aircraft cabins, so either should be fine in a vehicle cabin. The thing to watch charging lead acid is the chance of outgassing hydrogen if you push one too hard. In a well sealed cabin there’s is a very small explosion risk that’s...

The Goalzero thing just makes a connection to each available output, so there's not really a high current output per se. It could be fine to rig up something similar with other portable power sources in theory. Each output would only add what it's designed to do and provide that to the...

This seems like a question you need to answer for yourself. I'll say that I've found high current connection to a portable battery useful. For example giving the option to use a faster charger, in my case a 45 amp. On another battery I had an Andersen SB175 connector that I was using for a...

The Bluesea 1045 can do 2.4A per USB port, so it is indeed a 12W charger. It can do a total of 4.8A for both ports. If you want to stick with this form factor there are other options that can provide higher current. AFAIK the iPad 12.9 Pro comes with a 20W USB-C charger. The battery is...

Absolutely true that it's important batteries put into banks be closely matched in type, age, condition when you're discharging. This is basically mandatory if you want the batteries to last without accelerated aging. Understand that batteries have different characteristics when they are the...

@Herbie, greater than 27V input I think came from a nominal 24V controller document so the assumption is simply that the engine is running and charging. I don't know for a fact that all Secop/Danfoss/etc work this way or use these same values. Clearly the Secop design intent in this case is to...

How those Secop/Danfoss controllers work for sure is not something I've ever figured out. They're pretty tight-lipped about service manuals via web searches. I've got some design experience in similar products so it's not esoteric per se but I've just never seen schematics nor have had one to...

Interesting point about insulating. Would point out that it's the first layer on the drum that's the one that is exposed to the most heat from the motor and brake. So the operator should be thinking of heat everywhere in the system...

There's a point he makes about melt temperature that should be clarified. Critical temperature isn't melt but lower. From the Sampson Rope user's manual. https://samsonrope.com/resources/commercial-marine/rope-manual

Well, caveat emptor kind of factors in, too. It seems that the whole distribution channel reeks of fraud from the moment it leaves the factory floor.

That seemed odd to me as well. I think Arizona is one the least restrictive states for registrations. They use 3rd party providers for the MVD as well as state offices. I guess a lot of things are plausible there, like using a PO Box as your address on the title and stuff like that...

I've regretted selling my old bikes back in the day. I wish I still had the bikes I went through back then as I moved up and got hooked more and more - a Schwinn High Plains, Giant ATX 780, then a GT Zaskar. The GT was replaced by a Rhygin Juke SS. I was smart enough not to sell the Rhygin...

In the almost 30 years and two trucks I've had this old thing it went from solving a problem only known to climbers back in the 80s and 90s to being one of the original RTTs and wedges in 00s to I guess (hope?) fading back into a niche now.

It's absolutely a relative preference. I've never personally owned a big Cruiser wagon but have spent plenty of time in friends. I have owned an FJ40 and FJ60 (briefly) followed by my '91 mini truck and then '08 Tacoma. There was a 4th gen 4Runner in there for a while until it was clear a...

You have to run tires at whatever pressure you need to achieve a load rating. The basic difference in load C, D, E is that the sidewalls are increasing stronger to allow a higher maximum pressure and to some extent be able to handle more heat as a result. It's the air inside that is holding...

This is not true. A grade 8 bolt is always higher strength than a grade 5. While you are right that heat treating to achieve grade 8 does cause the plastic region of the bolt to decrease. That only means that the transition region from recoverable bending (elastic, meaning it returns to it's...

There's been plenty of advice about an external speaker. FWIW, I use old cast-off Motorola HSN1006 units that used to be all over hamfests and eBay. Generally speakers don't have to rocket surgery, you want one that's loud enough and most anything you find in ham, commercial radios or...

Is the point may be that InReach devices aren't creating their own ad-hoc network? IOW, a message between two InReach devices sitting next to each other still have to see the Iridium constellation. Even if that's what is meant it's not really a fair complaint. It's like saying a cell phone...

Generally yes but in this case a 1/4λ to cover the lowest frequencies (bands 13/28 on Verizon, for example, are 700 MHz) is 4 inches tall so physical length isn't difficult to achieve practically. The biggest problem is interference and obstructions around them. That's why some antennas you...

I can't say firsthand but that won't stop me from speculation. There's a couple of designs from which all these Chinese radios derive. The standard free-for-all, work everywhere radios are usually direct conversion architecture based on a RDA1846 IC (e.g. the UV5R, etc). The main problem with...