28 replies to this topic

[Sam-underscore]

Sorry to revive this buuuut I have 2 questions that I could not find good answers to.
1) What is the average pressure used for a 3K?(i.e. 6-7 pumps from a hornet pump/enough to get typical ~110' ranges)
2) *this one is a bit less directly relevant, but I felt it was relevant enough to the subject of the thread to ask anyway, and I feel it help many others with the same thoughts* about how much air volume/PSI is required to hopper an airgun? I know 4B's and UMB's can be hoppered and 3K's, 2K's, and sm1500's CANT, so where is the threshold where airguns become hopperable? Also, roughly how large of a tank expansion/how much pressure would be required to hopper a 3K tank?
Thanks in advance!

[Draconis]

Sorry to revive this buuuut I have 2 questions that I could not find good answers to.
1) What is the average pressure used for a 3K?(i.e. 6-7 pumps from a hornet pump/enough to get typical ~110' ranges)
2) *this one is a bit less directly relevant, but I felt it was relevant enough to the subject of the thread to ask anyway, and I feel it help many others with the same thoughts* about how much air volume/PSI is required to hopper an airgun? I know 4B's and UMB's can be hoppered and 3K's, 2K's, and sm1500's CANT, so where is the threshold where airguns become hopperable? Also, roughly how large of a tank expansion/how much pressure would be required to hopper a 3K tank?
Thanks in advance!

Well, I've been thinking about this for a while, but up until this term's Chemistry course, I didn't have the tools necessary to figure it out. I'm going to talk to Doom, but I'm pretty sure that I know how to figure out what kind of volume and pressure is required to use a hopper. I'll get back to you.

[Sam-underscore]

Well, I've been thinking about this for a while, but up until this term's Chemistry course, I didn't have the tools necessary to figure it out. I'm going to talk to Doom, but I'm pretty sure that I know how to figure out what kind of volume and pressure is required to use a hopper. I'll get back to you.

Ok thanks! Just PM me. Maybe it could be a topic on Nerf Engineering?

Edited by Sam-underscore, 03 March 2014 - 08:11 AM.

[Majestic]

In response to your original question,

The OPRV on the stock pump of an Air Max 10 kicks in just over 40 psi.



My Air Max One(Panther re-issue with the smaller tank) does not appear to have an OPRV, but it does become noticeably more difficult to pump at around 90 psi.



Both of these blasters use the same tank design and I have found that in stock form they can tolerate pressures north of 100 psi with out failure. Let it be said that over time running pressures that high may prove to be irresponsible. Through months of experimentation I have found that running these tanks at 80 psi gives me the most optimal performance, but that is just my opinion.

Note: The only modifications made to either of the blasters pictured are the tank expansions and pressure gauges.