"Paul" <Paul@[EMAIL PROTECTED]
> wrote in message
news:_bydnSJH5_pb4rnVnZ2dnUVZ_qCdnZ2d@[EMAIL PROTECTED]
> Calab wrote:
>> I have an eight gallon air compressor... 4.3cfm @[EMAIL PROTECTED]
40psi and 3.5cfm @[EMAIL PROTECTED]
>> 90psi.
>>
>> I've been looking at buying an inexpensive impact wrenche and notice
the
>> different ratings on them, but many times they aren't rated the same so
>> comparison can be different.
>>
>> For example...
>>
>> For $29 I can get a no-name electric 1/2" impact wrench that plugs into
>> my cigarette lighter. It provides 250 ft/lb of torque. That's all I
have
>> for specifications.
>>
>> For $35 I can get a JobMate air powered impact wrench with the same 250
>> ft/lb of torque.
>>
>> For $150 I can get a 120v impact wrench, but it only provides 228 ft/lb
>> of torque. Less than the cigarette lighter model? It runs up to 2100
rpm.
>>
>> For $270 I can get a battery powered electric impact wrench that
provides
>> 1050 ft/lb of torque! That's a lot more than the other wrenches, but
from
>> a 14v battery? It's not a big unit either. It specifies 0-2300 rmp.
>>
>> What I'm hoping to use this for, besides lug nuts, is for the few odd
>> bolts on my car that I can't get loose and don't have room to get a
>> breaker bar for extra torque.
>>
>> What should I really be looking at when checking out the impact
wrenches?
>
> IMO, all the ones you suggested are junk.
> Get a good one. Actually 2 of them.
> Get a 1/2" trigger type and a 3/8" butterfly. You will probably end up
> using the
> 3/8" a lot lot more than the 1/2".
> Get IR or CP.
Ditto on that, and my personal 1/2 is an IR--don't recall max torque,
but guessing around 350. Buy this quality ONCE and wear out the larger
compressors that you buy over the years. Should you opt even after these
advices for the cheapie, air-op'd. of course, be sure to wear safety
goggles--good idea even w/the good IR/CP! (I also have a no-name yet good
one, a gift, that I've used intermittently for 30 years, but it never had
the torque my IR has. Believe it is American-made as I got it in 1975.)
That elec. imp. for $150 will be too big and bulky. That cig-lighter one
is
likely a gimmick. And why consider that over-rated 14-volt for $270 when
this known good IR/CP can be had for ~$125? Just fyi, most lugs only
torque
to ~90 ft-lbs. s
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