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In Reply to: RE: Modern impact wrench posted by FenderLover on April 24, 2017 at 23:47:10
...can these things be used to remove a wheel and flat tire out on the road? Might be easier than the traditional tire lug nut wrench assuming the battery has a good charge on it.
Follow Ups:
These tools are popular at track pits, for that reason. One word of caution. Don't tighten the lug nuts with this tool. It can put on a bazillion foot-pound of torque. You may never be able to remove the nuts, again.I always use a torque wrench to properly tighten nuts.
8^)
Edits: 04/25/17
I might add: There the issue of battery charge drainage or whatever it's called in the biz. I doubt if you could have one of these in the trunk of your car for a year and expect it to work when you need it, without periodic recharging.
:)
I believe the phrase you're looking for is battery "self discharge". In other words, how much capacity the battery loses over time and temperature just sitting there minding its own business not powering anything.It might work after a year w/o recharging but that would depend on a few factors. If the battery capacity is fairly large relative to the power needed by the impact wrench doing its work, then even a somewhat drained battery might have enough capacity to remove a handful of lug nuts for a wheel or two. A hot vehicle trunk is not good for the battery as it accelerates self-discharge. A cool trunk is good.
I have some Lithium-Ion battery (18650) based flashlights in my trunk. I charge them up about twice a year -- or the night before a road trip.
Here's a pretty good website that discusses batteries:
Edits: 04/25/17
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