BB MACHINEGUN OWNERS GROUP FORUMS - If It Does Not Shoot Metal It Does Not Belong Here :: DROZD MP661K BB Machinegun Owners Group Discussion Forum

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RandomMember

SONYtec

04:51:27 Mon
Sep 12 2011
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BBMG LIFE BLASTER +2000

Re: adjustment for better velocity

Quote: DUBB at 21:08:45 Sun Sep 11 2011

This will adjust the solenoid dwell time, in microseconds. This is the time that the solenoid will "dwell" or keep the valve open during each shot. This will obviously determine how much gas is released, and in turn, have a direct effect on the velocity and gas consumption. Sergey puts a button on his boards so that you change this setting on the fly, as well as have a read out for what the setting is, exactly, as opposed to guessing with the pot on the original boards. That pot isn't made to mess with very much, it will disintegrate after enough adjusting.

Correct, on all of the above.

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10/02/08 Black '05 Drozd STOCK.
3/13/08 YELLOW '03 DROZD, 9/17/08 full auto mod, 1, 3, Full. ROF mod soon.
07/07 Black '05 Drozd, 8/3/07 resistor mod, 9/20/07 full auto PCB. More to come! (Adjust pot. and solenoid)
Accessories: 8/24/07 PMI HPA tank, remote hose, 9/03/08 JimC barrels and QD adaptors, 10/01/08 JimC CAR stock adaptor. NEED HI-CAP MAGS!!!

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DUBB

21:08:45 Sun
Sep 11 2011
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2251 posts
BBMG LIFE BLASTER +2000

Re: adjustment for better velocity

This will adjust the solenoid dwell time, in microseconds. This is the time that the solenoid will "dwell" or keep the valve open during each shot. This will obviously determine how much gas is released, and in turn, have a direct effect on the velocity and gas consumption. Sergey puts a button on his boards so that you change this setting on the fly, as well as have a read out for what the setting is, exactly, as opposed to guessing with the pot on the original boards. That pot isn't made to mess with very much, it will disintegrate after enough adjusting.

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In my experience, the secret to happiness is learning to sort out the occasional good idea from an endless body of bad ones.

I'm a Toxic Agent on a dangerous mission so secret that even I don't know what it is, and if I did, I'd have to kill myself! Thus my handwriting:
cryptic scribble that not even I can read!

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netstamp

09:17:50 Sun
Sep 11 2011
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509 posts
BBMG General ****

Re: adjustment for better velocity

Thanks

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Blackbird with 30" tact barrel (barrel 23" with a 7" G&G Socom mock silencer attached with threaded adapter). Full auto mod, Custom folding stock. King Arms 1 - 3X tactical scope...

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rkr

07:52:37 Sun
Sep 11 2011
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345 posts
BBMG Major General **
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Re: adjustment for better velocity

It's the pot adjustment. Might have been capped in older drozds. In BB you need to drill the plastic open to gain access.

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netstamp

14:24:57 Sat
Sep 10 2011
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509 posts
BBMG General ****

Re: adjustment for better velocity

Can you explain the adjustment ? Plastic cap ? Thanks in advance.

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Blackbird with 30" tact barrel (barrel 23" with a 7" G&G Socom mock silencer attached with threaded adapter). Full auto mod, Custom folding stock. King Arms 1 - 3X tactical scope...

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deuce217

06:01:09 Sat
Sep 10 2011
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92 posts
BBMG Colonel

" width=100 height=100 >
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Re: adjustment for better velocity *every one needs to see this*

I dug this up from the beginning of time on this site... Look how far we have come. Keep up the good work!

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SEARAT1

19:44:24 Mon
Mar 8 2004
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90 posts
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Re: adjustment for better velocity

Don't be too sure...... Look at my next post!!!!

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MikeSmith

18:35:48 Mon
Mar 8 2004
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7 posts
BBMG Private
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Re: adjustment for better velocity

I've made the adjustment. It WORKS. there is no comparison between the way the gun shoots when you get it out the boxd and how it shoots when turned all the way up. I've been using Daisy steel ABBs in it lately and they are coming out hard and fast. I don't have a chrony but the power is certainly there. Oh by the way there is a recoil to it after turning the power all the way up too so don't put your face too close to the iron sights

Mike

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pt460

17:43:25 Mon
Mar 8 2004
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21 posts
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adjustment for better velocity

Has anyone here actually experimented with the velocity/air adustment behind that plastic cap? Rumor has it that the velocity can be increased significantly by turning it all the way up... 30 rnds per C02. But that is just rumor. I've not actually seen a definitive post from someone that has actually done it. Just obscure "Wow!" posts, which do not tell me much.
Anyone tried this and chrono'd the results?

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