Re: Help me understand the impact driver.
If you ever have had one apart, you will see on the motor end a shaft like unit with a small swinging block on it, and that fits into a shell that has a lug on it,
the weight and size of the mechanism is what creates the torque, as well as the speed,
as it spins the weight (hammer) swings out and it hits the (anvil) the lug on the shell, if it is small and light there can only be so much HIT power, regardless of the speed in which it is hit,
in a way it would be similar if you took a wrench and put on the nut, and then took a small "L" shaped bar, and put in a electric drill chuck and spun it letting it hit and bounce off the wrench,that was attached to the nut. (but on a impact gun this is all contained into a nice safe package)
the smaller the mechanism is the less torque there is produced, and by listing it in Inch pounds it makes it look more powerful,
http://www.right-drill.com/ look at picture #6 for what the insides look like,
(note: in my opinion the chuck there trying to sell on the page, does not make a poor mans hammer drill, as the impact wrench hits side ways the rotary direction and a hammer drill hits up and down, not round and round, (I thought the same thing when I was first starting out in construction and thought I found a low cost hammer drill, all I bought was an expensive chuck) the simple is an impact wrench and a hammer drill is just two different animals,),
Last edited by BHD; 04-25-2009 at 09:29 AM.
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