Difference between revisions of "General Battery Impact driver"
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'''HarryMann:''' These come in expensive and cheap varieties and work somewhat differently | '''HarryMann:''' These come in expensive and cheap varieties and work somewhat differently | ||
The cheap ones work by revving up a spinning mass and then engaging a pawl, so it transfers its energy to the socket. The one below takes about 3 seconds to apply its impact | The '''cheap''' ones work by revving up a spinning mass and then engaging a pawl, so it transfers its energy to the socket. The one below takes about 3 seconds to apply its impact | ||
They do work though, and can be quite useful, especially for removing bolts where you can't get a large powerbar onto, or where you can't stop the thing turning e.g. a crankshaft pulley nut. A msall 12V battery is quite sufficient, I use a small light motorcycle battery | They do work though, and can be quite useful, especially for removing bolts where you can't get a large powerbar onto, or where you can't stop the thing turning e.g. a crankshaft pulley nut. A msall 12V battery is quite sufficient, I use a small light motorcycle battery | ||
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[[Image:Impact_driver_JCB_01.jpg]] | [[Image:Impact_driver_JCB_01.jpg]] | ||
The expensive ones are what a lot of mechanics use these days, instead of compressed air tools, being more protable, much like a battery drill, or winder, but built from the outset as Impact drivers - good ones are not cheap £150 upwards), but worth it! | |||
Tip: High on the list of things not to leave lying a round for more than 5 seconds in public view - it'll dissapear | |||
Revision as of 10:12, 2 May 2007
HarryMann: These come in expensive and cheap varieties and work somewhat differently
The cheap ones work by revving up a spinning mass and then engaging a pawl, so it transfers its energy to the socket. The one below takes about 3 seconds to apply its impact
They do work though, and can be quite useful, especially for removing bolts where you can't get a large powerbar onto, or where you can't stop the thing turning e.g. a crankshaft pulley nut. A msall 12V battery is quite sufficient, I use a small light motorcycle battery
This is a JCB cheapie from a newspaper offer, about £20 I think...
The expensive ones are what a lot of mechanics use these days, instead of compressed air tools, being more protable, much like a battery drill, or winder, but built from the outset as Impact drivers - good ones are not cheap £150 upwards), but worth it!
Tip: High on the list of things not to leave lying a round for more than 5 seconds in public view - it'll dissapear
