Tailwheel vs impact gun

[Soundguy]

i agree.. and just figure that into the equation at 80% and go..

 

[SPYDERLK]

The gallons of reserve you have dont much matter. You have to have a pump that will keep up. If it wont keep up, you could put your pump on a 60 gallon tank and it still wont keep up. It will just take a little longer before it falls behind enough that performance suffers.

But even if it is a small mpum and small tank, 2 gallons with a good gun should be enough to break loose a fastner. And then once loose, even if it drops down to 40 psi, should still be pleanty to back it the rest of the way out. You might just have to wait a minute or two to charge back up to attaack the next fastner though. But with a 2 gallon tank, it should take long to build back up

Agood real world statement for a clean fastener in a totally ridgid setup. Itll loosen on the 2nd or 3rd hit. A little bit of sustained resistance tho, wouldkill too much pressure in a 2G volume unless the compressor was adequate and running.
larry

 

[Soundguy]

Agood real world statement for a clean fastener in a totally ridgid setup. Itll loosen on the 2nd or 3rd hit. A little bit of sustained resistance tho, wouldkill too much pressure in a 2G volume unless the compressor was adequate and running.
larry

just like in the engine world.. there's no good replacement for displacement..

 

[94BULLITT]

I'm sure all are rated under ideal conditions; temperature, humidity, air pressure, size and length of hose, new tool with precise lubrication, etc. and you and I aren't likely to exactly replicate those conditions.:laughing:

I would use ideal very loosely. My 3/8 impact is supposed to torque 425 in reverse @ 90psi but I know it won't and I run it at 150psi. I have a porter cable battery set: recip saw, drill, impact etc. I think it is supposed to torque 133lbtf. It only torques 35 40lbft with a full battery.

 

[Bird]

I would use ideal very loosely. My 3/8 impact is supposed to torque 425 in reverse @ 90psi but I know it won't and I run it at 150psi. I have a porter cable battery set: recip saw, drill, impact etc. I think it is supposed to torque 133lbtf. It only torques 35 40lbft with a full battery.

Your 3/8 impact is rated at 90 psi and you run it at 150 psi. Maybe you've worn it out.:laughing:

I don't doubt that you're right, but I do wonder how you determine how much torque they have. Even when I was in the business of repairing air tools, I couldn't afford the kind of equipment that would accurately measure their torque.

The things that keep air tool repairmen in business are: (1) running higher air pressure, (2) moisture in the air going into the intake, causing corrosion, (3) inadequate lubrication, and (4) dirt and debris going into the air intake. The higher than 90 psi air pressure will give you more power, but also more wear and sometimes actual breakage internally. But for many mechanics, it's worth the extra cost to have the extra power.

 

[94BULLITT]

Your 3/8 impact is rated at 90 psi and you run it at 150 psi. Maybe you've worn it out.:laughing:

I don't doubt that you're right, but I do wonder how you determine how much torque they have. Even when I was in the business of repairing air tools, I couldn't afford the kind of equipment that would accurately measure their torque.

The things that keep air tool repairmen in business are: (1) running higher air pressure, (2) moisture in the air going into the intake, causing corrosion, (3) inadequate lubrication, and (4) dirt and debris going into the air intake. The higher than 90 psi air pressure will give you more power, but also more wear and sometimes actual breakage internally. But for many mechanics, it's worth the extra cost to have the extra power.

I have ran my snap on air tools for years at 150psi with no problems. I checked the porter cable battery impact with one of these. It has a peak torque setting, which shows the max you torqued on that fastener. So I tightened a wheel lug nut with it the battery impact and loosened it with the torque adapter. I have verified the torque adapter is accurate with a snap on torque wrench. I have never checked the air impacts but I seriously doubt the will torque what they are rated but they are still extremely powerful and fast.

 

[Soundguy]

it's all academic as long as you buy one that does what you want.

what's on the package is long discarded in the trash once you got the tool that works.

 

[shona13]

G,Day rx rated .
I have a real good socket wrecking wrench and depending how much weight you put on it you could even shear of a 3/4 " bolt !!!!!!!!!!!and it does not need a compressor.
Happy days.
Hutch.

 

[raptor749]

Go to searsparts.com and look up the model impact you have. Should give you a complete diagram and parts break down. Hope this helps..:cool2:

 

[TraderMark]

Something that a lot of guys don't know about air tool ratings is the fact that the 90psi should be measured at the tool INLET. To check correctly, tee a gauge into the airline at the tool inlet then pull the trigger on the tool. It will amaze you how the 120-150 psi @ the tank falls far short of being 90 psi at the tool inlet with the tool running.

I've used Mac AW234 & AW434 impact wrenches all my adult life. I had to run my compressor @ 195 tank psi and use a 1/2 air hose to get the full 90 psi at the inlet. But I could break loose bolts that other guys couldn't dream of breaking.

 

[Bird]

Something that a lot of guys don't know about air tool ratings is the fact that the 90psi should be measured at the tool INLET. To check correctly, tee a gauge into the airline at the tool inlet then pull the trigger on the tool. It will amaze you how the 120-150 psi @ the tank falls far short of being 90 psi at the tool inlet with the tool running.

I've used Mac AW234 & AW434 impact wrenches all my adult life. I had to run my compressor @ 195 tank psi and use a 1/2 air hose to get the full 90 psi at the inlet. But I could break loose bolts that other guys couldn't dream of breaking.

You're right, of course, and I guess you know that those MAC tools are made by Ingersoll-Rand; just have the MAC name on them. So they are very good tools.

 

[TraderMark]

You're right, of course, and I guess you know that those MAC tools are made by Ingersoll-Rand; just have the MAC name on them. So they are very good tools.

Yes Sir, Bird.
And since they were made by IR I could get parts for them locally at NAPA and not have to wait for the Mac Man to come by.
Of course that was back in the "good old days" when "parts" were still used. Too many people and manufacturers have gone to the "disposable" view on things now and I can no longer get "parts" for air tools through my local NAPA.

 

[Soundguy]

Something that a lot of guys don't know about air tool ratings is the fact that the 90psi should be measured at the tool INLET. To check correctly, tee a gauge into the airline at the tool inlet then pull the trigger on the tool. It will amaze you how the 120-150 psi @ the tank falls far short of being 90 psi at the tool inlet with the tool running.

I've used Mac AW234 & AW434 impact wrenches all my adult life. I had to run my compressor @ 195 tank psi and use a 1/2 air hose to get the full 90 psi at the inlet. But I could break loose bolts that other guys couldn't dream of breaking.

hose and inlet nip size play a big role in that.

that's why 1/2" air line for a good tool..and even 3/4" for a big one is so needed. and a good nip size on the supply and gun end.. no bottle necks to go thru

 

[Soundguy]

Yes Sir, Bird.
And since they were made by IR I could get parts for them locally at NAPA and not have to wait for the Mac Man to come by.
Of course that was back in the "good old days" when "parts" were still used. Too many people and manufacturers have gone to the "disposable" view on things now and I can no longer get "parts" for air tools through my local NAPA.

i don't like those new poly framed guns..

 

[RxRatedZ71]

Wow, thanks for all thee feedback. Didnt think this thread would get that many views. I have thought about a heavier duty model if i cant get this one back up and running. Whats the next size up that is practical/ affordable for a weekend warrior type? I hate not having the right tool or a big enough tool for the job when needed.

 

[Soundguy]

Wow, thanks for all thee feedback. Didnt think this thread would get that many views. I have thought about a heavier duty model if i cant get this one back up and running. Whats the next size up that is practical/ affordable for a weekend warrior type? I hate not having the right tool or a big enough tool for the job when needed.

it depends on lots of factors.

if you have a large compressor, and do medium to large work.. chip for about 70$ and get a 3/4 gun from HF. if you get the large aluminum body one..it's heavier.. but more torque thanthe slifghtly cheaper / lighter model.

if you do heavy work.. chip about 100$ and get the 1" gun.

I have both.. use them infrequently. when I do use them.. they are nice to have.

here's that 3/4" gun i have. used it recently to set a crankshaft pully on my farmall C.

http://www.tractorshed.com/gallery/uptest/a52871.jpg

 

[94BULLITT]

I'd go with one of them IR guns mentioned earlier. They should last you along time and have good power. You will need a decent size compressor.

 

[Bird]

it depends on lots of factors.

if you have a large compressor, and do medium to large work.. chip for about 70$ and get a 3/4 gun from HF. if you get the large aluminum body one..it's heavier.. but more torque thanthe slifghtly cheaper / lighter model.

if you do heavy work.. chip about 100$ and get the 1" gun.

I have both.. use them infrequently. when I do use them.. they are nice to have.

here's that 3/4" gun i have. used it recently to set a crankshaft pully on my farmall C.

http://www.tractorshed.com/gallery/uptest/a52871.jpg

Just don't forget that it won't be a lot more powerful unless you also get bigger hoses and fittings to allow more air through, and of course that you have enough compressor to do the job.

 

[Soundguy]

yep.. in post 33 i mentioned the hoses and nips.. and the larger comp in that post iself.

all playes a role.

 

[Bird]

i don't like those new poly framed guns..

Can I assume you're talking about the Ingersoll-Rand composite body with aluminum alloy cylinder for the air motor? They're fine tools, but like all man-made tools, there can be some problems. Some of the things I encountered in working on them: (1) there's a relatively small, flat piece of the composite that separates the forward and reverse buttons. It sometimes comes out. Now IF the owner saved it, I could superglue it back in, but if not, well . . . a new housing assembly (handle) ain't cheap, (2) that tilt valve can go bad and while it's not expensive, the manual shows a special tool to remove the inlet assembly if you have to replace the tilt valve. You'll probably never succeed with that tool, although there's a trick to removing that assembly that's quite easy:laughing:, (3) the forward/reverse buttons sometime pop out. If they aren't lost, it's easy to put them back in; otherwise you get to buy new ones, (4) if dirt and debris score a steel cylinder in an air motor, you can use a cylinder hone to clean it up. That doesn't work very well with an aluminum alloy cylinder, and (5) I even got a couple on which the owner had installed a tune-up kit and then it didn't work because he failed to properly lubricate it.

But the only one I saw that wasn't worth fixing was one which was under the car lift when the mechanic lowered the lift and crushed it.:laughing: