Re: Beefing up my air capacity?
We burnt up a few 5 HP motors on a Curtis 80 gallon compressor we had at the junkyard,from using it to sandblast used parts..it would run constantly once you started blasting,and if you didn't stop every few minutes to let it catch up and stop,it would first pop the thermal overload on the motor,and eventually the windings started smoking,and that was it..
We had tried adding a second tank to the compressor--that only made it take longer for it to come back on again,it also made it run twice as long to build up to full pressure in both tanks...which eventually killed the motor..and the cost to run the compressor so much had our boss livid!..(never mind the fact we killed the motors on it!)..
One day a big load of industrial scrap came in,and in the load was one of those "tow behind" compressors,used for a jack hammer,to tear up asphalt streets..
It was ancient,had parts missing,and at first was seized up,but we got it freed up and running after some parts swapping,it had a Continental engine and the parts missing happened to be the same as a Continental we had in an old Kaiser..
Once we had that thing operating,we could sandblast all day and the thing barely labored at all,a jack hammer probably uses 3 times as much CFM as a sandblaster..
It looked similar to this unit below..
At home,I have got electric tools to take the place of many of the "air hog" air tools..I got an electric orbital DA sander,and an electric impact gun,and use a 4" grinder with a cut off wheel instead of the air powered cut off tool,because I felt it was a waste of money paying to run the compressor so much,and wear it out,when a nickels worth of electricity will do the same job..
I only use the compressor mostly to blow up tires,spray paint,and when I need the air impact when the electric one isn't gutsy enough..
I did some work with a guy who had a tow behind air compressor,that used a 460 Ford engine as the air pump--it ran on 4 cylinders and the other 4 were for pumping air..that thing would run anything..we used it to sandblast some big beams in a warehouse that were scorched by a fire,I had to stand watch and keep adding oil to the engine,as it was pretty tired,and consumed a quart about every 20 minutes of run time!..it had special cylinder heads on one bank for the air compressor part..
I have seen a military unit similar to it at a local junkyard that has a 231 Buick V-6 engine..they were selling it for $300,it needed an engine,but they would include one with it from a car,all you had to do was swap the heads onto the car engine..
Last edited by Tractor-Holic; 05-02-2019 at 11:11 AM.