PTO Air Compressor

nomad · Sep 5, 2005

Folks, I now have a pto operated air compressor (see attachment) which is used to inflate the tire. No, not only to inflate the tire, but also can be used to paint the house/wall/etc as this pto air compressor is different than the similars which can't be used for painting the wall. I will have another one casted & machined for a friend. Anybody else wants? Raise your finger then.

nomad · Sep 5, 2005

close-up

RonMar · Sep 5, 2005

Interesting... What are the specs? CFM? Max PSI?

Soundguy · Sep 6, 2005

Too bad it doesn't have a holding tank.. though i guess you could always plumb one of those CH 10 gallon tanks inline for 'storage' capacity.

Soundguy

nomad · Sep 12, 2005

</font><font color="blue" class="small">( Interesting... What are the specs? CFM? Max PSI? )</font>

About 4-5 CFM and 120 psi. Mounted onto PTO at 540 RPM.

RonMar · Sep 12, 2005

Little too small for my needs. I sometimes do sand blasting and am limited by my CFM/storage capacity. It works great for about 30-45 seconds then my electric compressor falls behind the demand and the blast gun looses efficiency with the pressure drop. I had thought a higher volume compressor plumbed into my air system, making use of the 20+ PTO HP available on my tractor might be handy. It would sure make my infrequent sandblasting needs much quicker evolutions.

Thanks for the info.

nomad · Sep 12, 2005

Of course, its capacity is small, especially for sand blasting which requires much more CFM. This PTO compressor is just for inflating the tires and for some paint works. You can install a high capacity air compressor (to your tractor) which is derived by a flywheel of your tractor. What's your tractor brake system? hydraulic or pneumatic? However, sand blasting is a closed area work and the best is to use electric air compressor.

RonMar · Sep 12, 2005

Brakes are Mechanical on my tractor and I would run a hose to plumb any tractor compressed air into my existing air system. I would also want the running tractor a ways away from any blasting operations.

HomeBrew2 · Sep 12, 2005

Sounds interesting, how much $ ?

nomad · Sep 13, 2005

It is not in seriel production. I have its cast tooling made and casted & machined one only. Cost for one unit was of course high. I have not done a cost analysis for seriel production, but my initial guess for the price is it won't be more than $50-60.

have_blue · Sep 13, 2005

The direct drive unit is nice.

However, it would be better if it were readily available. I would be more interested in a PTO kit for a standard, readily available compressor. For example, Harbor Freight has a 5hp 13 CFM@90psi compressor for $99. I think a kit consisting of 3ph bracket, PTO coupling, pulleys, and belt would be very useful. A tank would be necessary for larger air tools, of course. The air compressor could easily be removed and replaced with a generator, water pump, or any tool that is belt driven.

HomeBrew2 · Sep 13, 2005

Sounds good, please keep us posted

pekabu · Sep 13, 2005

I have seen a bunch of John Deere pto power compressors on eBay. They are small tire filler types.

nomad · Sep 13, 2005

On ebay? Are they new brand pto compressors or old/antiques? I have not seen such new compressors anywhere in last years.

Farmwithjunk · Sep 13, 2005

The Deere PTO compressors were sold back in the 2 cylinder days. Very prized items by most Deere collectors.

pekabu · Sep 13, 2005

Soundguy · Sep 13, 2005

You can get ford air compressors as well... Use 1 sparkplug hole to run the pump...

soundguy

Egon · Sep 13, 2005

What type of compressor is it?

Piston, sliding vane, screw, impeller??

Egon

Soundguy · Sep 14, 2005

I've not had one apart.. but hear that it is air over air, piston type I guess.

You screw it in a spark plug hole, and the alternating manifold vacume/pressure from the cyl modulates the air flow..

Fuel charge is isolated from tire charge.

I guess it could be modulated diaphram and check and flap valve.... dunno...

Soundguy