Karl Townsend wrote:

i

If you find a good solution, please let me know. I bring a tractor PTO
compressor out to the field every day. I could reduce the tractor RPM
(save fuel) if such an accumulator could be designed.

I've thought of adding a couple old 100 lb. LP bottles but don't want
to wait for the whole system to build pressure before starting. The
shears need 100 psi to work so you can't start until almost to cutout
pressure.

Karl

How much volume do you need? I would think that a basic gas engine
powered compressor (with throttle control) mounted on a 3pt skid would
be more fuel efficient than running a large tractor at high idle. Since
that compressor has a tank, it should retain pressure between uses so
the startup fill time would be minimal.