Does an LP tank give you finer tuning over a DM's air usage?

[~Solo~]

Was on a walk on recently and was chatting with somone who seemed to know their stuff regarding markers and air. I've had some tuning dificulties with my DM6 recently which I now think may have been down to some damaged O-rings but we got chatting about tuning with the LPR to get better efficiency and less recoil / noise. I asked about whether an LP tank would make any difference and he was adamant that it would. Why? His view was that a lower input into the HPR would mean that the band of pressure over which it provided adjustment would be narrower and could therefore be regulated more finely. The would then follow for the LPR, again allowing a narrower but finer band of adjustment.

I've searched several forums and the web generally to see if I can find any supporting evidence / views on this but have only found he usual stuff that a DM can use either tank and you only need to worry about drop-off if the recharge rate is slow on a LP tank.

What the chap said seems to make sense to me for the HPR but once the output of that is set I would have thought that the LPR would react the same way irrispective of the original source pressure.

Would appreciate any thoughts.

Thanks.

 

[MattC]

I've used my LP tank on every Marker from a DM9 to an Angel A1 to a Dye NT to my Geo, Ego...

All with 0 problems.

 

[Phil792]

Hmm I'm no expert but I don't agree, the HPR reg is used to set the pressure going into the LPR correct??? Once this is set then every time you come to adjust the LPR you should for all intents and purposes be working at around the same psi range. I understand with LP because your only having to recharge to around 450psi the recharge rate would or should be quicker but would have thought since the HPR regulates the pressure going to the LPR that either output would make little difference to consistency, at least at the kind of bps we use nowadays

 

[Mclovin101]

Hmm I'm no expert but I don't agree, the HPR reg is used to set the pressure going into the LPR correct??? Once this is set then every time you come to adjust the LPR you should for all intents and purposes be working at around the same psi range. I understand with LP because your only having to recharge to around 450psi the recharge rate would or should be quicker but would have thought since the HPR regulates the pressure going to the LPR that either output would make little difference to consistency, at least at the kind of bps we use nowadays

Bloody hell Phil you got your thinking cap on this morning

 

[Fragle]

your man you met talks sense!, some markers you will adapt the hpr to run lp, but say with the geo 3 ego 11 etc they will just run at a lower pressure and become far more sustained.

 

[Phil792]

your man you met talks sense!, some markers you will adapt the hpr to run lp, but say with the geo 3 ego 11 etc they will just run at a lower pressure and become far more sustained.

But that doesn't mention the consistency just that some guns run off LP and others off of HP, I remember years ago the old angels could only run on LP because you couldn't adjust the HPR down enough to shoot under 300fps, (IIRC) What I refer to in my previous post is that after you pass the HPR as long as the reg can reduce the pressure enough it doesn't matter if a HP or LP reg was used in the first place as the HPR regulates the pressure going into the LPr, only the recharge rate would matter for consistency. At least that's my take on it, I'm not an air-smith just a guy with an opinion

Pikey
Besides can't geo 3s and ego 11s still run on HP???

 

[Fragle]

I love your posts pikey . Yes they can and mostly do. What i believe the chap is talking about is, "older markers" with not as good hpr's as more modern ones say, you do get inconsistencies through your hpr and fine tune through lpr (sure you know that anyway) at the end of the day its about percentages more in more chance for fluctuation. To what extent i couldn't comment, for people like myself i wouldn't notice the difference, i run lp for the simple reason i can run my tank lower than with hp before i get drop off cause i have a geo 3 which compared to a poppit its crap on air. I'm no scientist but to me it makes sense

 

[Phil792]

Dare I ask why you love my posts??? I have too much time on my hands clearly