Reddit reviews DEWALT Corded Impact Wrench with Detent Pin Anvil, 1/2-Inch, 7.5-Amp (DW292)

I doubt 190 ft pounds of torque will take out 10 year old suspension bolts. Your better of spending the extra 100 in the DeWalt

Plus buy spending a few more bucks on an accessory

>Eligible Qualifying Purchase for DEWALT's Power Tool Accessory Promotion. When you purchase this DEWALT power tool, you can receive an extra 20% off select DEWALT power tool accessories when both products are shipped and sold by Amazon.com. Discount applied at checkout. Learn more

That saves you 30 bucks

Ingersoll Rand makes pretty decent 1/2" impacts in the $200 range. An 8-15 Gallon Air Compressor is going to run you $250-400

If you don't want air you can get something like this

uhh, circuit breakers don't trip as soon as they go over 15A though.

this is why you can start electric motors (a 10-15 HP can pull 150-200A+ inrush on a ~60-70A breaker) and not trip.

"By use of magnetic shunt plates within the magnetic circuit, it is possible to divert the magnetic flux, thereby resulting in a higher inrush withstanding capability. These High Inrush trip time delays disregard short duration, high pulse surges (typically 8 ms or less and up to 25x rated current) characteristic of transformers, switching power supplies and capacitive loads."

http://www.carlingtech.com/trip-time-delay

ex2:

We have a 110v hydraulic rebar cutter that functions similarly to what you're describing with cordless impacts. It's rated for ~1700w, but it'll push enough amps (well above 15) while very rarely tripping the breaker. And we take this thing from jobsite to jobsite, so we're on 15A breakers and GFCI outlets all the time.

I imagine a Hammerdrill or a Miter saw would be different here because you typically use these tools in ways where they're under load for a longer period of time which can make the breaker trip more consistently.



I've also played around with a Fluke 375 and measured DC amps on various power tools. (Makita stuff mainly)

High drain tools won't peak anywhere above 60A,. And I'm pretty freaking sure you would never pulse anything like near 250A on a double layer of Samsung 25Rs. (5.0 Ah batteries because that's basically the standard nowadays and the 25R being the best cell in this category)

Either way, that is absolutely ridiculous and way out of spec. These batteries can handle short bursts of ~60A and a continuous discharge of 40-45A. If you put 250A through them then it's probably for some insanely microscopic amount of time, to the point that it may as well be discarded as irrelevant to the tool's average performance.

It probably has more to do with the lack of innovation in the corded market. There's no brushless 110v impact wrenches. And the mechanical engineering behind impacts like this one:

https://www.amazon.com/DEWALT-DW292-7-5-Amp-2-Inch-Impact/dp/B0009HM5OI/ref=sr_1_13?ie=UTF8&qid=1522218602&sr=8-13&keywords=dewalt+impact+wrench

dates back to 2005. And I imagine the version before this one wasn't much worse either.

There's just no money in tools like these. So they don't put any further R&D into them.

There's also no battery packs. And 110v is essentially a universal platform that everyone has access to almost everywhere.

And it's not like Dewalt, Makita, Milwaukee etc can carve out truly dedicated markets by pushing 110v tools.

But if they get you on their battery platform? You're more likely to come back to them.

So then you eventually buy something else in their constantly expanding platform. Which makes you even less likely to switch to a competitor. And by the time you've built up a nice stock of their tools? You probably need to buy some more batteries from them.

Batteries don't last forever. And disposability = more $$$$.

110v tools don't really offer a parallel to that. You can't produce highly disposable corded tools because, again, 110v is a universal platform.