Question about hose size requirement for impacts

[AustinRoepke]

We've got an Ingersoll-Rand 2141 Impact. It's a 3/4 drive that's supposed to run at 90psi w/ a 1/2inch hose. Everything else we've got is 3/8, so I was wondering, is it alright to run the impact at the same relative air velocity/mass (I don't know what it's called for impacts. cubic feet/minute aka CFM)? I know a smaller diameter hose with more pressure=more resistance, but I don't see how that'd affect the impact.

Also, could I get a reducer (again I dont know what it's called. A male 1/2 to female 3/8 coupler and a 3/8 chuck) and run it with the 3/8 hose w/ a higher psi?

I'm gonna calculate a rough estimate on how much psi i'd need to run in a sec.

Thanks,

Austin

 

[shotgunfatcat]

I would think you could run it, it just isn't going to have full capabilities. Make sure you check your hose so it can handle 90 psi (this is kinda stupid, I am sure it can). Some air tools need the larger flow (cfm) like your gun, but it will work if you need it too, again just not as well as it could.

Does your tank have a 1/2 output? I have mine set up with a quick connect to a reducer right off the tank so if I need to run 1/2 I just pull off the reducer.

 

[AustinRoepke]

there's a check valve then a reducer on it. The tank can go to 300psi and it's one of those upright 60 gallon ones. (EDIT: It's larger, but I'm pretty sure it can't do 300psi. I think it's rated for 175)

It's just that the hose and reel we have are for 3/8. We even have a 1/2 hose, but it's not my shed-I'm just living in it lol.


I did the math. Without accounting for the increase in resistance, the tank needs to be at 160psi... Theoretically

 

[AustinRoepke]

This isn't supposed to be in the classifieds. Sorry.

 

[emeraldcoupe]

your going to loose about 100-120 lbs/ft of torque with the smaller hose/fitting.

 

[beelsr]

you could always hook up two airlines to a self-made Y adapter/manifold. I'm going to guess you're going to use this close to the ground, but even if not, you can just make a longer whip hose for the tool to manifold connection.

 

[AustinRoepke]

your going to loose about 100-120 lbs/ft of torque with the smaller hose/fitting.

Yeah. I hooked it up at 150psi and it felt underpowered. I'm gonna up it to 160-165 and see how it acts then.

you could always hook up two airlines to a self-made Y adapter/manifold. I'm going to guess you're going to use this close to the ground, but even if not, you can just make a longer whip hose for the tool to manifold connection.

I think I'd put on a 1/2 inch hose before that... But that'd be a good idea if we put a second hose on the compressor (which could happen).