slammeddime
+1y
To correct some incorrect posts; there are 5 models of yorks. 3 full size, and two mini's. The full sizes are the 206, 209, and 210, and the mini's are the SC206 and SC209. The 6, 9, and 10 represent the cubic inch displacement on each rotation of the shaft.
That means that the full size 209 model will pump the same amount of air as the mini SC209 model, only in a smaller package. There is no 207 York, and all of the Yorks will output more than two Viair compressors at idle (output is dependent on engine rpms and pulleys that connect the compressor to the system).
If you want to mess around with different pulley sizes and compare outputs of different compressors, download this excel spreadsheet and have fun.
As for having bad luck with electrics, what kind of bad luck? If you've always had bad luck with every install, then no offense, but that leads me to believe that it was installer error, not hardware error. Nothing wrong with electrics... especially since they're maintenance free, unlike the Yorks or Sanden compressors.