RoniN
RMS Regular
- Messages
- 4,384
Turning into a bit of a melt tbh. Pretty sure this is why I gave up last time I looked lol.
@RoniN Is free air CFM the same as CFM at a set pressure?
That SIP is rated 5.4 'free air' CFM and 8CFM piston displacement. The parkside one calls a litres per min measurement out at 7bar, which to me seems different again. 3.2 seems mega crap for the parkside when its rated almost identical to that SIP at 1800w / 2.5hp.
Free air delivery cfm is the volume of air that the motor will draw in from the outside atmosphere and use to charge the tank.
cfm piston displacement is the measure of how well the motor will charge the tank (in theory if the tank is fully charged and the piston displacement is 8cfm and you're using a tool that uses 8cfm, the motor has the capacity to keep the tank fully charged giving you an infinite supply)
cfm and bar (psi) are two different measurements, cfm is volume of air whereas bar (psi) is the measure of the pressure that volume of air can be delivered at.
Cheers