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1/4" and 3/8" Impacts

Aberdale

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Mar 13, 2009
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Ohio
Does anybody use 'em?

I use my 1/2" impacts a lot. But I have never owned, nor seen a use for smaller sized impacts. I can pretty much break loose or twist off any bolt smaller than 3/8" by hand with a ratchet. And my 1/2" impact sockets go from 3/8" to 1" in fractional sizes, and 10mm to 21mm in metric.

So why is there a need for 3/8" and 1/4" impact sets?
 
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Dallus

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Jun 14, 2010
Messages
54
Location
Flower Mound, TX
I have a MG325 90th Anniversary and use it to zip off lug nuts and mostly brake work. I have a 1/2' Nitrocat that I use for crank bolts and bed bolts only because my bit is 1/2" drive and it'll break the loctite Ford uses easily.

But the 3/8 fits in tight places and zips stuff off quickly. Especially stubborn bolts I don't feel like ripping on with my ratchet. That may be why other people use them.
 

greasemonkey44

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Mar 30, 2011
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Location
memphis
i take it youre not a pro?
basically its faster, much much faster
and smaller impacts fit in more places
more jobs done faster equals more pay
 

Damian

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Dec 26, 2010
Messages
428
Location
Auburn, Georgia
A strong 3/8 impact is 10x more practical for every day use, especially for hrs at a time. It's not always enjoyable toating around a big 1/2" impact and then trying to squeeze it in places that it won't fit.

My IR 2115ti 3/8" impact is the most used tool I have. It's used for hours a day, every day. I couldn't operate with out. My 1/2" impacts never leave the tool box unless I need some serious balls to break something loose. The IR 3/8 does just fine with 150psi of air running through it. ;)

i take it youre not a pro?
basically its faster, much much faster
and smaller impacts fit in more places
more jobs done faster equals more pay

I was going to say that but didn't wanna come off rude. But I definitely think that somebody who does this for a living wouldn't be asking these types of questions. Weekend wrenchers might be curious though. :)
 

GSteg

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Apr 27, 2009
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Location
Earth
I don't use 1/4" impacts, but I have a few 3/8" gun. They're much lighter than the 1/2" guns, and fit in my hand perfectly. They're great for tearing down an engine too.
 

Seanbev24

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Mar 25, 2010
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1,000
Location
Lynnwood, Wa
My 3/8" MG325 is by far my most used tool I rarely need to get out the 1/2" gun. I have deep/shallow/swivel 3/8" impact sockets from 8-24mm. I'd say a good 3/8" gun is nice for home use, but required for pro use.
 

Fedwrench

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Dec 9, 2007
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Valley of the sun
I don't own a 1/4 dive impact wrench but, I use 1/4 drive impact swivels on a 1/4 drive air ratchet daily. I use both my pneumatic and coordless 3/8 drive impact much more than my 1/2 inch impact. The bottom line is that time is money and one shouldn't do anything by hand that can be done faster with power tools.:beer:
 

blacK20

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Mar 19, 2011
Messages
652
I use my IR 3/8" Ti gun all day long. Use it once and you'll never be without it.
 

johnsdeere850j

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Jan 22, 2011
Messages
454
Location
Oklahoma
I have a IR 2101 1/4 impact I love to use. It weighs about a pound and busts lose most bolts where a 1/4 socket is appropriate. Fast too
 

hofferwood

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May 8, 2010
Messages
922
Location
DownRiver Michigan
The IDIOT has one of these
SD530828.jpg

Chuck(the idiot)
 

freeskier

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Mar 13, 2011
Messages
526
Location
Norwood, MA
i almost never use my 1/2 inch stuff unless its a lug or sumthing that will absolutely not move. love 1/4 and 3/8th, have impacts in both.
 

dime

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Aug 21, 2008
Messages
506
Location
south jersey
i thaught the same thing but ive had my ir 3/8 impact for about 4 years now and i wouldnt be without one now.
 

ImportTuner

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Jan 9, 2007
Messages
5,855
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SF Bay Area
I use my 1/4" impact to remove the screws that hold the cover under the car when changing oil .. It's alot faster than a air ratchet ... :)
 

SteveU

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Joined
Nov 20, 2006
Messages
1,243
Location
Michigan
Does anybody use 'em?

I use my 1/2" impacts a lot. But I have never owned, nor seen a use for smaller sized impacts. I can pretty much break loose or twist off any bolt smaller than 3/8" by hand with a ratchet. And my 1/2" impact sockets go from 3/8" to 1" in fractional sizes, and 10mm to 21mm in metric.

So why is there a need for 3/8" and 1/4" impact sets?

I use my 1/4" & 3/8" impact sockets all the time, even on air or regular ratchets when working on the bike or cars. Reason is they are all 6pt & will take off bolts a 12pt will round off and they won't break near as easy. Can't remember running into a clearance issue with any of the stuff I've worked on. Use 3/8" impact everytime I work on the brakes.
 
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blown94conv

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Apr 2, 2007
Messages
854
Location
Berlin, CT
I use my 3/8 more then 1/2. It's easier from a size standpoint. I don't use the 1/4 much, but if I am using air, I only use impact. Chrome is for hand use only.
 

Appleyard

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Apr 16, 2011
Messages
203
Location
Elkhart, IN
I use my Matco MT2138 3/8 impact all day. Like everyone else has said, it's a hell of a time saver and a godsend when you need it to fit in a tight place.

I used to think the same thing though, who needs a 3/8 impact. Then my Matco dealer gave me a demo to try for a week and I was hooked. Haven't run into an instance where I've needed a 1/4 impact though.
 

rocklobster

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Joined
Apr 1, 2011
Messages
184
I have a 3/8ths butterfly impact and that thing is extremely handy, I bought it at princess auto for cheap.

Paid for itself in one job and everybody that tries it wants one.


8344137.jpg
 
OP
A

Aberdale

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Mar 13, 2009
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1,380
Location
Ohio
Thanks for the replies. No, I'm not a pro, so taking a few seconds to do things by hand is no big deal for me. I do use a 3/8" air ratchet and a 3/8" butterfly with chrome sockets, but not impacts. I've seen several sets of 1/4" and 3/8" impacts for sale on CL lately and was curious.

It just always seemed like an impact on a 3/8" or 1/4" socket was overkill. I can certainly understand the issues with being lighter weight and provide better access than a 1/2" impact, though. Especially if it's being used 8-10 hours a day.
 

GSteg

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Apr 27, 2009
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Earth
I love using 3/8" impacts for caliper bolts. I can't fit a 1/2" impact inside my wheel well, especially since I need a deep socket to reach the bolt. 1/4" impact seems a bit useless for me though.

If you get a powerful 3/8", it'll most likely replace your 1/2" impact until you need to get that axle nut or crank bolt off.
 

WVBrady

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May 5, 2005
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1,679
Location
WV
...It just always seemed like an impact on a 3/8" or 1/4" socket was overkill. I can certainly understand the issues with being lighter weight and provide better access than a 1/2" impact, though. Especially if it's being used 8-10 hours a day.

One use of an impact in where you can't hold the bolt or nut from turning. Just this week I had to use an impact on a riding lawnmower engine pulley where I couldn't keep it from turning. Just a second with an impact, it was off.

If I can keep it from turning, I don't need an impact. I am proud of my muscles. :)
 

Strouty

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Mar 21, 2010
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38,215
Location
Southern Maine
The 1/4" impacts are perfect to undo pesky bleeder screws on brakes. I don't know how many rusted bleeders I have undone instead of breaking them off!
 

Hammer1963

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Jan 2, 2011
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2,048
Location
Kentucky
I use both the 1/4" and 3/8" on a daily basis. They flat out make money for us who make our living using tools. If you are in the market for a 1/4" impact, save your air hose and buy a Matco 1/4" cordless impact. Awesome tool and much more powerful and handy than its Pnuematic counterpart.
 

oldwino

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Nov 16, 2009
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Location
Sonoma County California (wine country)
Yep
use my 1/4" Milwaukee battery power impact a lot...fits into small spaces, no hoses to deal with and plenty of power...great for smaller bolts, but excellent for screws, etc. It's often the first tool I grab to do a job
 

shampoop

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Jul 12, 2009
Messages
1,947
Location
SW Washington
3/8" guns are awesome and are a necessity for pros, but are not very important for an average home mechanic. For the most part they just make certain things a lot faster and easier, which adds up very quickly for a pro. But if it takes a hobbyist a little longer to do something it's not that big of a deal, you just might miss out on watching conan that night.
 
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