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Old 06-11-2013, 10:08 PM   #1
Mark_S OP
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rattle gun (impact wrench) advice

Hi

Tool advice puleeze

I want a rattle gun to undo crank/clutch/sprocket/rear wheel nuts etc etc.

Would a cheapy super cheap auto one do the job?

they have a 2.5hp direct drive black ridge compressor that with hose and rattle gun will cost a little over $200

the compressor would also be used for pumping up tires and blowing out carbs etc.

I know belt driven is better than direct drive but I can't justify the extra cost given the infrequent use.


thoughts?
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Old 06-11-2013, 10:37 PM   #2
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I've got a SuperCheap cheapie and it works fine.

Gets used for die-grinding, dremel, tyres, drill, grease gun...
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Old 06-11-2013, 10:59 PM   #3
Micawberism
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Its the CFM's that count
Most rattle guns are designed to run at 90 psi. The compressor needs to be rated to maintain this pressure under flow .
Unless your just buying it to use once in a blue moon, at home, in which case any bodgy old supa cheapie will do
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Old 06-11-2013, 11:05 PM   #4
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I got one of those compressors. Bloody good for what we need it for. I've always thought a rttle gun would be good but there are all the different sized socktes you need as well.
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Old 06-11-2013, 11:40 PM   #5
Te Hopo
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I have a Hitachi battery rattle gun as I use it for roofing jobs (it's great for tec-screws) as well as on the bike and truck.


However the compressor jobs are best for in the shed, as there's so many other air tools beyond a rattle gun out there that make life easier.

My advice would be to look for the most Cubic Feet/Minute it can pump and the largest tank that you can afford with your budget.
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Old 06-12-2013, 02:19 PM   #6
clintnz
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I've got a direct drive cheapy compressor that has been going strong for a few years. When it craps out I'll probably get something nicer but given something nicer costs about 4x as much I'm in no hurry. I wonder how well 2x cheapys in paralell would work

Quote:
Originally Posted by Padmei View Post
I got one of those compressors. Bloody good for what we need it for. I've always thought a rttle gun would be good but there are all the different sized socktes you need as well.
The great thing about my Repco 1/2" drive socket set is that that the sockets are beefy enough to withstand occasional (ab)use adapted onto my 3/4" impact wrench, but not so flash & expensive that the tool gods strike me down for performing such indecencies on my gear. My 3/8" socket set is a little nicer though so I have proper impact sockets for my 3/8 rattlegun.

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Old 06-12-2013, 09:48 PM   #7
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the biggest thing with direct drive el-cheapo's is not to let them run any longer than you have to...
I have a sort of biggish direct drive cheapo.. it's a fair few years old now... It's viberated the head lose a few times
but other than that it works fine...
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Old 06-12-2013, 11:19 PM   #8
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By the time you get the compressor up to pressure, youd’ve finished the job with a socket set.

Compressors are good though (even cheap nasty ones). Try to get as big a tank as you can if you want to use for painting etc.
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Old 06-13-2013, 02:21 AM   #9
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Thanks all for the input. I'll probably go and buy some bits in the weekend.
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Old 06-14-2013, 04:44 PM   #10
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I see supercheap have a decent stanly belt drive model down to $499.. normally $800+.

Id love one but can't really justify it...

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Old 06-14-2013, 04:53 PM   #11
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My cheap direct drive one is probably half full of water by now...
Need to drain it and do some maintenance on all the screw threads sometime...
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Old 06-14-2013, 09:23 PM   #12
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Quote:
Originally Posted by kiwipeet View Post
I see supercheap have a decent stanly belt drive model down to $499.. normally $800+.

Id love one but can't really justify it...

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Hi Pete. how's the 640 going these days?
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Old 06-15-2013, 08:40 AM   #13
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Ive used rattle guns for many years with my trade, Just a word of warning with the direct drive el cheapos, Avoid using an extension cord like the plague unless its a heavy duty bugger, those cheapos dont have auto pressure unloaders on them when they restart automaticly, the motor has to spin the compressor up to speed against the pressure in the tank and the combination of the voltage drop in the cord and the higher amp draw for a pressure restart can stall and cook the motor with a standard ex cord. Its happened to me once and Ive heard it happen with a few people. Standard industry air pressure in wksps and in Truck air systems is approx 120 PSI (8.5 Bar). As long as the compressor cuts out at no more than that and restarts at around 90, thats fine. Double hex sockets will work fine as long as you dont stall the gun for an extended period then single hex is better. if you want a bigger tank, go to a compressor shop and get a tank off a stuffed comp or a tank from a truck wrecker and simply connect them together, you can also put the second tank in another location in ya shed to save running long air hoses across the floor.
Also, squirt a bit of CRC into the air intake of the gun every now and then, it will luv ya for it.
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Old 06-15-2013, 10:50 PM   #14
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Put a big tank on a small compressor and it'll take ages to fill up - use high capacity air tools like a die grinder, impact gun or spray gun and it'll never fill up. Volume, you need air flow to make things work. After more than 40 years of using the standard ARO couplings, I'm now in a shop that uses the high flow NITTO fittings - what a difference! I converted 9 airtools over, I never used to use my 3/8 impact as it was a gutless wonder, now it's a little powerhouse. We also use a bigger hose and couplings for the 3/4 gun, it's a brute with that much airflow behind it.
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Old 06-17-2013, 01:49 AM   #15
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Lots of valuable info thanks

I brought the top direct drive super cheap compressor and with a hose, impact wrench, tire inflator and air gun and approx spent $260.

My shed is run via a long extension cord so I'll replace that with a heavy duty one to minimize the change of a brown out stall.

I have to change the clutch center on my old klr next weekend so that will be the acid test of the impact wrench.

Thanks again

Cheers


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