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Airguns by Make and Model => Benjamin Airguns => Topic started by: benji397 on November 28, 2021, 06:22:43 PM

Title: Is this right? Fast pumping vs slow pumping
Post by: benji397 on November 28, 2021, 06:22:43 PM

Benjamin 392s...14.3 CP Domed.

First, I know this is a small sample data. In the garage where the temperature was reading 48 degrees this is what I observed. If I did 10 pumps at a slow steady rate my FPS was 634, 641, 634. If I did 10 fast pumps my FPS was 658, 660, 661. These strings were back-to-back in less than 10 minutes. Why would fast pumping increase the velocity? Thanks for your help....

Title: Re: Is this right? Fast pumping vs slow pumping
Post by: triggerfest on November 28, 2021, 06:32:38 PM

Fast pumping equals driving higher air temperatures equals higher velocities... It concerns pure physics...

Title: Re: Is this right? Fast pumping vs slow pumping
Post by: benji397 on November 28, 2021, 06:45:23 PM

Quote from: triggerfest on November 28, 2021, 06:32:38 PM

Fast pumping equals driving higher air temperatures equals higher velocities... It concerns pure physics...

That makes sense :)  Thanks

Title: Re: Is this right? Fast pumping vs slow pumping
Post by: longhunter on November 29, 2021, 07:02:43 PM

Until the air, in the valve, cools down. Then, you're back to the normal velocities.