front mounted air-compressor

[Pullstart 62,812]

3 hours ago, wallfish said:

With a pressure relief valve, the compressor can just keep going. The trade off is the compressor life as it will need to operate much longer. But from what you're explaining it won't be used all the time anyway.

You can find adjustable relief valves to "dial it in" . Installing a relief valve is a good idea no matter which way you go as a safety feature. 260 PSI in a tank is a bomb if it explodes.

John has all kinds of good ideas Max, take ‘em to heart!

 

Food for thought.  Could you rework the PTO engagement on the tractor with a regulated air cylinder?  

[bc.gold 3,403]

5 hours ago, Maxwell-8 said:

After some research this compressor may be used on a semi for the air system. 

Therefore being able to make  up to 260 PSI! 

 

here on a caterpillar: 

 

That is a single stage air compressor, cuts out at 120 psi and back on at 90.

 

The lubricating system is pressurized from the diesel engines oil system, oil from the compressor returns to the engine where it gets cooled and filtered.

 

Edited November 13, 2021 by bc.gold

[R Scheer 502]

The chamber above the cylinder may be for the water cooling.  If you look at the picture below you can see the solar pump etc connected to the top of the compressor, and the red elbow at the front of the compressor.  I'm using about 15' of pipe for cooling, and as a belt guard.  I went this way as I do woodworking in the shop as well and I didn't want to have a heater core getting filled with sawdust.  With this the pipe will get about 40F above ambient.

 

It ain't pretty but it works.  It needs a second blow off valve on the tank, there should be one on either side of the ball valve.

[8ntruck 6,993]

I've got an old compressor that was originally set up for gas engine power.  It is now powered by an electric motor. It has a bypass valve that opens at 90 psi (it is adjustable) and lets the compressorfreewheel until the tank pressure drops.

 

Not sure what brand it is, but I'll take another look at it to see what information I can dig up for it to pass on here.

[Maxwell-8 4,275]

3 hours ago, bc.gold said:

That is a single stage air compressor, cuts out at 120 psi and back on at 90.

 

The lubricating system is pressurized from the diesel engines oil system, oil from the compressor returns to the engine where it gets cooled and filtered.

Looked again at the pump looks like it was also used on a diesel truck using the pressured oil coming from the engine. This has been closed of an make it have it's own oilpan, no pressure tho.

 

I ain't going to use it a lot, but if I where I might be better of looking for a new compressor, one that has oilslingler? 

[R Scheer 502]

I guess my first thing would be to check the required cfm of your concrete air hammer.  Then maybe look for used service truck air compressors.

 

If the compressor you have works, could you plumb in a 12vdc oil gear pump?  Something that provides 40 psi, uses a drain from the oil sump and send to the inlet if you can open the connections.  I saw one on ebay for app $100.  Maybe ghere's one available used on the internet.  Just thoughts.

 

[bc.gold 3,403]

1 hour ago, Maxwell-8 said:

Looked again at the pump looks like it was also used on a diesel truck using the pressured oil coming from the engine. This has been closed of an make it have it's own oilpan, no pressure tho.

 

I ain't going to use it a lot, but if I where I might be better of looking for a new compressor, one that has oilslingler? 

 

Drill the connecting rod cap 1/8" hole, make and install a dipper.

 

Compressor I set up for father was liquid cooled I added a small radiator ( Toyota ) with thermosiphon cooling.

Edited November 13, 2021 by bc.gold

[Jeff-C175 7,199]

6 hours ago, Snoopy11 said:

just seeing if you have any thoughts! 

 

Thanks for the vote of confidence Snoop-Don, but ah hain't got nuffin what hain't already been said!  

[Snoopy11 5,714]

18 minutes ago, Jeff-C175 said:

 

Thanks for the vote of confidence Snoop-Don, but ah hain't got nuffin what hain't already been said!  

Thanks buddy!

 

Definitely good to get second opinions / set of eyes on a project like this though! 

 

Don

[ebinmaine 67,328]

This is a video I had saved in my "Watch later" on YouTube for future reference on my own future build. 

 

Figured I'd post it here. 

 

 

 

 

[Lee1977 6,649]

I have a compressor that came off a VW that has an electric clutch. If I set it up on a Wheel Horse I would use the electric clutch to turn it on and off and use an unloader valve to control the pressure.

That way you wouldn't need a tank unless you are using more air then the pump can produce.  I haven't had a need for it but may set it up just to be doing something.

[Southern_Secret 463]

Air Compressor Continuous Run Unloader

Part Number : NAC 82709
NAPA Air Compressors

 

• Product Details
• Buyer's Guide
• Technical Assistance

 

Features & Benefits

N/A

 

Fitment

N/A

Attributes

Run Unloader Preset Pressure Rating: 145 To 175 Preset Pressure Rating

UNSPSC: 40151802

VMRS Code: 013009056

 

[Southern_Secret 463]

This is what we use on all our gas compressors on our service trucks, you just run a copper tube to the compressor and screw the valve into the tank. The part number is a NAPA # and its at the top, you local NAPA should be able to get them. We own a NAPA and i checked the avalability around the country and they are in stock.

[Snoopy11 5,714]

On 11/13/2021 at 6:00 PM, R Scheer said:

could you plumb in a 12vdc oil gear pump?

Scavenging pump. 

 

'bout 100$ on the web... (not including all the plumbing and such...)

 

Don

[Snoopy11 5,714]

2 minutes ago, Snoopy11 said:

Scavenging pump. 

 

'bout 100$ on the web... (not including all the plumbing and such...)

 

Don

 

 

Don

[R Scheer 502]

Just wondering if you have tried the air compressor, maybe by just temporarily  running a belt from your tractor to the compressor.  Only concern I'd have is that if it's supposed to have pressurized lubrication, and its been run as a splash lube, did the crankshaft bearings etc get lubricated properly?  Might be worth a quick test before putting money/time into it.  

 

I do like my air brake compressor, it's very quiet when running, and it's only 100 years old so it'll probably outlast me.  Family history is that it's off a 1920 White truck.

[Snoopy11 5,714]

A little ...eh... ...but... I like your profile picture... @R Scheer... 

 

Don

[R Scheer 502]

@Snoopy11

 

Many Thanks.  She's bossy, but a sweetheart.

[Snoopy11 5,714]

4 minutes ago, R Scheer said:

She's bossy, but a sweetheart.

Our Shepherd is the same way... 

 

Don

[Snoopy11 5,714]

You can see her over here, @R Scheer

 

 

Don

[R Scheer 502]

@Snoopy11

 

Beautiful shepherd, you didn't interrupt her while she was surfing the web I hope!  

[ebinmaine 67,328]

10 hours ago, R Scheer said:

only 100 years old

 

Niiiiiiice.  

 

 

 

17 hours ago, Southern_Secret said:

This is what we use on all our gas compressors on our service trucks, you just run a copper tube to the compressor and screw the valve into the tank. The part number is a NAPA # and its at the top, you local NAPA should be able to get them. We own a NAPA and i checked the avalability around the country and they are in stock.

 

So this valve turns on and off as needed?

Compressor builds 100% of the time and the valve releases when creating pressure isn't needed?

 

What's the in/out pressure able to be set at?

 

[Lee1977 6,649]

Input pressure is what the pump put out. The unloader valve only releases excess pressure that is over the set pressure..

[Maxwell-8 4,275]

On 11/17/2021 at 2:43 AM, Lee1977 said:

need a tank unless you are using more air then the pump can produce

I think the pump will be more then capable, would be nice if we are doing some work when not much compressed air is needed to be able to shut off the tractor and work  in silence for a while. But thanks for your input!

 

11 hours ago, R Scheer said:

Just wondering if you have tried the air compressor, maybe by just temporarily  running a belt from your tractor to the compressor.  Only concern I'd have is that if it's supposed to have pressurized lubrication, and its been run as a splash lube, did the crankshaft bearings etc get lubricated properly?  Might be worth a quick test before putting money/time into it.  

 

I do like my air brake compressor, it's very quiet when running, and it's only 100 years old so it'll probably outlast me.  Family history is that it's off a 1920 White truck.

Good point, You suggest taking of the bearingcaps, to inspect the bearings? Oil was up there, so everything is still running smooth. It was mounted for a while on a regular compressor being ran by an electric engine at 2350 rpm, with the engine pulley being 2 inches. SO that was seriously underdriving the compressor @ 400rpm still making suficient amounts of air

The compressor itself is made to run diesel-engine rpm (+3000)

 

The compressor will be turning 980 rpm on the tractor with the way things are planned now.

[R Scheer 502]

I was thinking of just checking functionality, does it pump, any odd noises, does the unloader work etc.  It sounds like you've already done this. 

 

I wouldn't take things apart without a reason, I hate fixing things until they break.