That’s the brand and horsepower my dad owns, I think he paid around $2000 for it in 2020.I sold Quincy on the Tool truck. Back then a 5 hp/80 gal 2 stage was around $1500 and worth every penny. Even a lot of shops used them and would buy 1 or 2. Body shops especially. They need a lot of air. Nowadays with electric hoists and cordless power tools, many shops don't need all that much air. Their compressors will last years. Decades. The cast iron pumps with cast heads are very durable and rebuildable. The major brands have parts available. The electric motors are Baldor brand and are also a top notch product that also can be repaired and rebuilt.
Not a giant two-stage 80 gal, but I think this Quincy is older than me and takes everything I have thrown at it...fwiw it has a Century motor.I sold Quincy on the Tool truck. Back then a 5 hp/80 gal 2 stage was around $1500 and worth every penny. Even a lot of shops used them and would buy 1 or 2. Body shops especially. They need a lot of air. Nowadays with electric hoists and cordless power tools, many shops don't need all that much air. Their compressors will last years. Decades. The cast iron pumps with cast heads are very durable and rebuildable. The major brands have parts available. The electric motors are Baldor brand and are also a top notch product that also can be repaired and rebuilt.
Actually, Single stage puts out WAY less air. I had a 5 horse single stage Ingersoll Rand before this one. Output was no where near the 2 stage 5 horse I now have. 11.5 cfm @ 90psi vs 17.5 @ 175 psi. Keep in mind the cfm rating is while pushing against the rated psi, so 17.5 at 175 is while pump is pushing against 175 psi so at 90 it’s pushing 25+ cfm. I was waiting on the old IR to catch up all the time. Keep in mind a small die grinder consumes way more air than a DA sander or an inline sander. Cranking up your air tools to 175 would be asking for trouble. Most are rated to 100 psi. The 175 is just to store more air reserve in the tank . Think of a 2 stage like a 14-71 blown small block where blower (stage 1) force feeds engine (stage 2).So, a single stage will put more cubic feet of air out per minute, but they are not good for 175psi.
If you use an HVLP gun or die grinder, that's all you need If you get a two stage and crank it up
to 175 you will have that extra air in storage but a "Drag Race" between a two stage and single
stage set at 110psi will leave the two stage as the loser. Stay away from compressors that have
a motor that runs at 3450RPM. They say that they are 5HP but are actually 2.5 to 3 HP under-
driven to get the same power.
Ya 7.5 HP 2-stage is the cats ***!I have had an Ingersoll- Rand 7 1/2 hp 80 gal. two stage for about 15 years now from Northern Tool. Replaced a 5hp two stage. It keeps up with my sand blast cabinet and my 95lb pot blaster. The old one wouldn’t. Very happy. I installed it in the unheated part of my shop. I glued a block heater to the compressor block and plug it in during the cold months to mitigate some of the cold start wear and tear.