[caffel]

We are looking to save weight as well, but concerned about the 1.03 cfm part of the rule.
Compressors are often rated by their CFM at the working pressure.
The Thomas that FIRST sends is rated at .9 cfm, but the Thomas spec says at 0 pounds.
The rule says:
Compressed air for the pneumatic system on the ROBOT must be provided by one and only one compressor. This compressor may be either the compressor from the KOP, or an equivalent compressor that does not exceed any of the KOP compressor performance specifications (specifically: nominal 12v, 1.03 cfm flow rate, 120psi maximum working pressure). Compressed air shall not come from any other source. If an alternative compressor is used, the team may be required to provide documentation to show compliance with the performance specifications.
Most of the worthwhile ones under $100 seem to be about 2 cfm.
We will need to watch out for this and its hard to compare them accurately.