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Topic: Cordless impact wrenches (Read 1696 times) previous topic - next topic

Re: Cordless impact wrenches

Reply #25 –
If you want to give your Earthquake a fair chance, use an air supply tank like I made and no matter what size line you use to supply it, a short larger diameter air hose from tank to tool will allow it to reach it's rated torque. Plus, the air tank gets rid of a lot of moisture that would normally get to the gun. Use air tool oil into the gun each time you use it and it will last forever.

Air gun the nuts back on but use your multiplier to achieve final torque.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Cordless impact wrenches

Reply #26 –
I don't own an impact wrench, but would like one. I asked this question a while back. Has anyone tried using the on board air tank and compressor to drive an impact wrench?

Ed and Michele
2000 U295  36'  (Build #5600)
8.3 ISC 350HP.
2012 Jeep Grand Cherokee (Toad)
2001 Lance Truck Camper (Sold)
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Re: Cordless impact wrenches

Reply #27 –
Quote from: Lance Camper –
I don't own an impact wrench, but would like one. I asked this question a while back. Has anyone tried using the on board air tank and compressor to drive an impact wrench?
Yes. Assuming 110psi, that should be at the lower end for a gun like an Earthquake. The problem is friction loss in the line getting to the gun. Lots of people have been disappointed with their gun when it's the small diameter hose that's the problem. A 50 foot quarter inch hose required to reach all the tires comfortably is not going to do the trick. That's where the tank and short larger diameter hose work well. You may have to wait for the tank to come back up to pressure after a few nuts are removed but no big deal.

I use a reel with smaller vinyl line to reach my gun supply tank. It plugs into either the coach air or my small contractor's compressor. Easy and cheap solution.

Note: since the photo was taken, the hose deteriorated and I have replaced it with a HF yellow synthetic air hose.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Cordless impact wrenches

Reply #28 –
The restriction I see is the 1/4" hole size of the fittings and the entry hole in the impact wrench. Are the holes in the compressor and the impact wrench accordingly larger?
I don't recall quick disconnect fittings with holes larger than 1/4"
Where would they be available, as I am quite interested in having the capability. I have a 3/4" impact wrench and 125 PSI compressor.
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
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Re: Cordless impact wrenches

Reply #29 –
Nitehawk,

Quite correct as the entry hole is 1/4". Since this is an extremely short distance, the friction loss is not that bad but but there are larger quick connects available for big guns. See the fitting I welded onto the stainless air tank I carry. I have a very large 1" impact.  Here is a source for the larger fittings: Amazon.com: 1/2 Inch - Quick Connect Hose Fittings / Hose Fittings: Industria... I use TF style couplers.

So, you can use a smaller supply line to the air gun tank and wait for it to reach your maximum pressure and then your big gun will be happy...until the pressure lowers and you have to wait a bit.

I use a double male on the coach/compressor line to get air into the tank as I didn't want the extra complexity of a valve.

Check the big quick connect fitting on my tank below. This could be done on an old propane tank without welding and with cheap plastic fittings.
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Cordless impact wrenches

Reply #30 –

Why not just use your impact with a torque stick to put the nuts back on? Way cheaper than a torque wrench and no worry about calibration.

Amazon.com: Steelman 60164 1-inch Drive Yellow 475 ft-lb Torque Extension:...

see ya
ken

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The selected media item is not currently available.ken & dori hathaway & Big Agnes
🍺1992 U300 GrandVilla WTBI #4150 FOT FBP 2011
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Re: Cordless impact wrenches

Reply #31 –
Quote from: kenhat –
Why not just use your impact with a torque stick to put the nuts back on? Way cheaper than a torque wrench and no worry about calibration.

Amazon.com: Steelman 60164 1-inch Drive Yellow 475 ft-lb Torque Extension:...

see ya
ken

It won't let you over torque but no way to be sure torque is reached unless you are using a 1" drive with a lot more torque. The adaptors to go from one size to another loses a lot of torque.
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