we may have to do the capacitor mod I had to do to prevent the "run-away" motor issue I had on my prototype

Let me know when you will be ready to ship one

Quote:

we may have to do the capacitor mod I had to do to prevent the "run-away" motor issue I had on my prototype

We don't know yet if it's necessary. The voltage regulator on the new board can supply more current than the old DC-DC converter so there won't be bad voltage drop when motor starts up. If it's a matter of voltage spikes generated by the motor, the mag (not the board) will need mods - a small ceramic capacitor should be soldered to motor terminals.

Quote:

Let me know when you will be ready to ship one

How about this one?



When I become famous you'll show this #1 board to journalists.

I'm getting number 1! Now I just need to wait for Sergey to become even more famous.

I want to use the switch for voltage change and may remote the on/off too.

I'm doing some more testing in anticipation of 2000 rpm.

TBK

#4 board is on the way to Massachusetts.

Quote: Sergey_new_pcb at 14:40:24 Sat Apr 23 2011

#4 board is on the way to Massachusetts.

SonyTec.......?

Quote: camracer at 18:47:03 Sat Apr 23 2011

Quote: Sergey_new_pcb at 14:40:24 Sat Apr 23 2011 #4 board is on the way to Massachusetts. SonyTec.......?

Nope.

But just as curious as to bought it.

Quote: SONYtec at 02:52:03 Sun Apr 24 2011

Quote: camracer at 18:47:03 Sat Apr 23 2011 Quote: Sergey_new_pcb at 14:40:24 Sat Apr 23 2011 #4 board is on the way to Massachusetts. SonyTec.......? Nope. But just as curious as to bought it.

A new member who joined in early March (audiobill5) lives just south of Boston. ....?

Well, You and everyone else should know..... There should be a new video coming out soon! But be warned, we are pushing limits that have NEVER been seen for the Drozd. We will need to work out the bugs, and re-engineer stuff! But what a place to do it!!! We have a bunch of very talented folks here!!!!! What a fun year this is going to be! You guys are great!! ---Cam

Shame on you Cam!!! Stop scaring off my customers! Tell them what's happened to your board. Or just send it to me for repair before you damage it completely.

I Can't Say better words that Sergey's board is the BEST tech out there...

When I did the 21v and back into the stock phaze of my "modular mod", I don't know what the hell I did, but my display went out. Mostly, anyway, it flashes randomly, every now and then, but nothing that means anything. The amazing thing is that the board still works 100% othwise, everything works except the led's. And I cannot for the life of me figure out what I could have done wrong to piss it off like that. I intend to send it back to Sergy, not to complain, or anything, but I really want to know how I managed that, and if I were Sergy, I would, too. I just have to work out an arrangement to pay the return shipping, I don't excpect Sergy to fix it, I broke it, and it still works, as-is, I don't care about the display, other than wishing it was blue. But since I found a way to screw something up, which is really hard to do to Sergy's boards, I feel obligated to let him figure out what I did, so he can learn from it. When I get my 2000 rpm board (I get #5!!), I'm sticking the old one back in the box, and sending it back to "it's source", along with return shipping to get it back. It still works, after all.

Quote: camracer at 23:18:27 Sat Apr 30 2011

I Can't Say better words that Sergey's board is the BEST tech out there...

He's not a tech... He's an Engineer.

I don't know what the hell I did, but my display went out. Mostly, anyway, it flashes randomly, every now and then, but nothing that means anything. The amazing thing is that the board still works 100% othwise, everything works except the led's

Dubb, if all mentioned earlier doesn't help and you decide to send it to me for repair don't put any cash into the box, it's not allowed and it may result in the parcel never crossing the border and probably disappearing forever.

http://www.youtube.com/watch?v=UPw-3e_pzqU

Very cool TBK! Tempting, tempting......

I forget, what is the max direct voltage Sergey recommends to the mag, 16.8V? At that rpm, short burst are fine.

I forget, what is the max direct voltage Sergey recommends to the mag, 16.8V?

Try this...

http://www.youtube.com/watch?v=F1OtVh-9Urg

You need to hear it!!! That sound through my camera is worthless.

TBK

Holy cow! I am busy for a couple of days and come back to find out DUBB is sportin' wood, and Cam has his board in hand ... that isn't sounding right...

You blink and look what you miss!! What does CB stand for? I was calling it SB-2 for Sergey Board 2.

Sergey- is that the same small 900 rpm board that I have?

I wish I could get a better recording of the sound, especially with the bigger valve. It's a deeper sound. The regular drozd valve sounds cool, too, though.

I wanted to do a video of the actual firing with the blackbird mag, but that was too much to do with just two hands. Yes, I was getting airshots with longer bursts and could hear the mag "filling up" after the air shots. In addition to making the new mag that will be able to do 2000 rpm in .177 and .236 caliber, I think I can make the Blackbird mag run at that firing rate with a couple of changes. But, of course, we'll have to see if that pans out.


TBK

I happened upon an electric motor at the shack, today. It's identical in dimentions, but spins about 3 times as fast. It's rated 9v to 18v. I found a pinion for it and put it in, and replaced the 12v reg on my Sergy board with the original 9v, but it spun the pinion, and that is where it sits at the moment. I made a crappy video of the 2 spining up to show the difference, maybe I can get it posted somewhere (I was about to say, "get it up", but I don't like that expression).

I used a brass pinion, but I gave up on that motor, it was just way too fast to be practical, so I put the old one back in. I have another motor that will fit, coming, anyway, rated for 24v, I'll have to see what that one is like. For what it's worth, a 380 motor will fit in there, too. I'm in the process or redoing the modular mod, to go with having 2 sets of batteries, I like how you made yours with spring contacts, like I oringinally did on the same mod I did for the magazine. I gave up on those in favor of bent tab springs, from AA batteries, since those springs kept snagging things. I found some very small springs that should work perfect, in addition, I'm going to dig channels for the wires to go in so they arent pinched, and I plan to run one set under the others contacts. Sergy says he'll be able to ship my new board (#5!!) in a couple of days, I am getting everything else I want to get done, now.

Is the pinion a really loose fit on the shaft, or fairly tight? If it isn't too loose, it should CA on ok.

The motors in that size range usually have a 2mm (.078" or 2.3mm (.094" shaft. There should be pinions available for those shaft sizes, but I don't remember the gear pitch. I think Cam may have measured it.

I can't wait to get the magazines running up at that speed.

DUBB, you will really like the new board.

Cam, my camera is a Fuji that I've had for quite a while.

TBK

Great report Cam. The part about the new board overpowering the mag motor is important. I am thinking of buying one but I must wait to the motor problem is solved.Hopefully soon. Hope your drinking good beer.You have some outstanding mirco brews in your part of the states. Sam Adams come to mine. GD.

So I have this other motor, and it is identical in every dimention to the motor in the bb mag, but when I apply the same current to them, this other one spins about 3 times as fast as the bb's motor. I think this is because of how many wraps around the stator, or "turns" the wire makes. I think that it has to be a relative ratio, then, where the one that spins slower makes more torque than the fast one, I expect some kind of tradeoff. So I'm going to get to the bottom of that, next. I want to wind my own motor really bad, now, for some reason. I think I'll start by measuring the resistance through the stators, next, and go from there.

Those 370 motors were the first pick for the new mags. We used the RF-370CA-15370 that has very close specs to the 'bay motor in your link. The brushes weren't as robust as the Nichibo and MD5 motors, and I believe Cam burnt one up pretty quickly. That's when we switched to the Nichibo and MD5.

My personal preference is still the Nichibo QJT-360S-14280 motor followed by the MD5. They have nice big brushes, plenty of torque, and good rpm for the application. I posted the motor rpms I was getting at a couple of voltages on the "New Mag Development" thread. The Nichibo motor spec sheet shows 6200 rpm at 12 volts and 12500 at 24 volts, so voltage and gearing puts it right in the game. The torque is good in the speed range we need.

If someone has their BB mag apart, can you check to see how much space is available for the motor (diameter and length). I don't recall the BB mag gear ratio, but I was thinking it was about 2.7:1.

TBK

The way to do those LM317 voltage circuits is to use a static resistor inline with the variable for the R2. This will give you a fixed working range, instead of zero or infinate. For example with a 10 ohm R1, and another 10 ohm resistor inline with a 100 ohm trimpot, or 10-110 ohms R2, you get a range of 2.5v to 15v. Trick is to figure out what you need, using that calculator.

Quote: DUBB at 14:23:30 Sat May 7 2011

So I have this other motor, and it is identical in every dimention to the motor in the bb mag, but when I apply the same current to them, this other one spins about 3 times as fast as the bb's motor. I think this is because of how many wraps around the stator, or "turns" the wire makes. I think that it has to be a relative ratio, then, where the one that spins slower makes more torque than the fast one, I expect some kind of tradeoff. So I'm going to get to the bottom of that, next. I want to wind my own motor really bad, now, for some reason. I think I'll start by measuring the resistance through the stators, next, and go from there.

DUBB, who makes that motor, and whats the model# ?

The original is rated to do 4000 rpm @ 12v, but the new board will give it 15 to compensate.

The 380 I'm using now? No way, it's slower than the original motor, it's only 3600rpm @ 12v, so it's 300kv. Slower, but it's happy as a clam at full battery voltage. Got the jumper bypass on my original Sergy board, awaiting the arrival of the new one. Mag runs great, and it's actually quiter. I agree, though, 8000rpm is way too much, that would be twice as fast as the original. If I linked to one that says that, check how high the rated voltage is, 8000rpm @ 24v = 333.3kv, same as 4000rpm @ 12v = 333.33kv, the big difference is that the former CAN take 24v, IF we should so choose, and we won't be pushing it running at 15v, like with the latter.

- No Load Speed: 3500 RPM / No Load Current: 50 mA.

That's the one, and it runs at 3500 rpm, it's slower than the original motor. Scroll down that page and read it for yourself. There are, however, 2 different kinds of these motors, the other one is for lower voltage, and will run faster.

Quote: null

- No Load Speed: 3500 RPM / No Load Current: 50 mA.

And that's about what it runs at 12v, slower than the original motor. I can't explain the discrepancy in the factory info, though.

Quote: DUBB at 19:54:48 Sun May 15 2011

That's the one, and it runs at 3500 rpm, it's slower than the original motor. Scroll down that page and read it for yourself. There are, however, 2 different kinds of these motors, the other one is for lower voltage, and will run faster. Quote: null - No Load Speed: 3500 RPM / No Load Current: 50 mA. And that's about what it runs at 12v, slower than the original motor. I can't explain the discrepancy in the factory info, though.

Well, DUBB, You hit it on the head. "factory discrepancy". Both TBK and I have ordered motors that are NOT what the advertise!! You're not wrong, and neither am I. Heh, heh! Hey we're both always right, ...right? (I know, most of the time I'm wrong ) But, at the very least, this "library" of knowledge we are amassing will change the world!

You know me, I always am listening. I not a "master" until I've "snatched the pebble"..... ---Cam

Right, more powerful motor damaged the transistor on the OLD board. New boards CAN cope with it if the user replaces the stock motor with something stronger.

I don't think I'm quite done exparamenting with motors just yet.

I still can't explain the conflict with the RS380PH I am using now, what the factory says makes no sense, and I can't find anything about what I have, which is what the ad said, maybe someone rewound it.

Oh yeah, my Mabuchi RS-380PH also has the number RN546726 on it. Mean anything to you that I should know?

I'm falling further behind!!! Arggggh.

I used a 5 watt, 100 ohm variable resistor for my mag motor speed control and got the rpm ranges I posted several weeks ago. I just calculated the range from what I wanted to end up with for voltage, used the max voltage and the current requirement of the motor to get resistance (R). V=IR. R=V/I.

I also have some high wattage fixed resistors to be able to switch speeds and have a (roughly) finite voltage drop and mag speed by just flipping a switch.

That's the brute force method, I guess.

Those were the resistors I bought when I bought some more Nichibo motors as my mag fleet expanded. All of it was from Jameco.

TBK

Here's where I'm going with this. (No LM317) Using this:
(see page 21, fig. 33)
http://www.datasheetcatalog.org/datasheet2/6/0epqaz3x2s8gtglruwh4ik4ux67y.pdf

Quote: camracer at 22:56:39 Wed May 18 2011

Here's where I'm going with this. (No LM317) Using this: (see page 21, fig. 33) http://www.datasheetcatalog.org/datasheet2/6/0epqaz3x2s8gtglruwh4ik4ux67y.pdf

I don't think that will be sufficient, or if it is, you are cutting in close with that regulator. 1 amp only, that means 15 watts. Consider, instead, an LM2576, the 3 amp version. The LM317 is 1.5 amps, which is enough, I think, but 1 amp might not be. Not to discourage you from the diy project, but I thought I should show you a couple that are ready made.
http://www.dimensionengineering.com/DE-SWADJ.htm
http://www.dimensionengineering.com/DE-SWADJ3.htm
These guys make the coolest regulator pakage of all, though, I think, this last one is the 3a "universal" regulator, it'll go up or down ("buck/boost"), so it can give your Drozd MORE than your batteries are. Expensive, though.
http://www.dimensionengineering.com/anyvolt3.htm

I like how they say, under the list of applications, "low voltage doomsday device."

http://www.dimensionengineering.com/anyvolt3.htm

You know what Cam, I did get confused on the project schematics I linked. I linked you to the circuit that drives a brushless speed controller, instead of the circuit for the brushed motor speed controller, here:
http://www.diy-electronic-projects.com/p145-PWM-Motor-Light-Controller
I hate when I do that.

Quote: SONYtec at 12:41:04 Thu May 19 2011

I like how they say, under the list of applications, "low voltage doomsday device." http://www.dimensionengineering.com/anyvolt3.htm

HAA! Haa! haa! They also listed, "Don't cross the blue wire with the 12v output". Especially if the battery is connected. Otherwise, ......BOOOOMMM!

That's how I learned, anyway. Self Education: teaching yourself something you know absolutely nothing about, for the same reason, and crossing your fingers.

Quote:

That's how I learned, anyway. Self Education: teaching yourself something you know absolutely nothing about, for the same reason, and crossing your fingers.

Self taught and ability to improvise and research are the assets. Heck, if a guy can become a multimillionaire and not be able to read, imagine the shear depth of character to get there!. Its good to be taught the basics and given some guidelines or parameters, the rest is up to the individual!

Like tonight. I pulled one of the firearms I know little about. Had not seen any internal diagrams or any other info. Just pooled my knowledge and went at it to solve a bolt locking up and feed problem. In 30 minutes I had completely striped it and adjusted and changed some things that didnt look right and back together. Now racks and drops perfectly. Sometimes I get into this zone where I find myself doing stuff and barely remembering after how I did it right at all. Know what I mean?

Ha, ha, I have one like that, a Savage-Stevens 820 12ga, one back from before they stamped numbers on them! Came to me missing a few parts, that's always my favorite, a puzzle without all the pieces. Figured it out though, and got lucky enough to find all but one part, which, when I got the rest (a risky investment, given that I never found that part, but it took long enough to find it all), I was able to fabricate. It works, now, and it's loaded and ready to go.

Hello Rubberratt! Welcome. Sergey's SB-2 will handle 24v. DON"T PUT MORE THAN 15V into your Blackbird's magazine. I've done 21v, but only for VERY short bursts. DON'T burn your motor out!

Advancements have moved far beyond Xeno batteries here. Xenos are a waste of money! Go rechargeable. Try the 14500 Trustfire protected cell rechargeables.

Let us know your issues as you run into them. We have a great "crew" here! ---Cam

OOPS, my bad. Then make that:
Jumper on pins 1 and 2 = Full unregulated battery voltage
Jumper on pins 2 and 3 = 15v, regulated


Better?

Quote: DUBB at 14:00:28 Fri Jun 3 2011

OOPS, my bad. Then make that: Jumper on pins 1 and 2 = Full unregulated battery voltage Jumper on pins 2 and 3 = 15v, regulated Better?

DAMN!!! Thanks DUBB! I just burned out my mag motor! ...now I'm gonna have to buy a WHOLE new gun!

Is that like when you have to buy a new car because the ashtray is full? I ordered one of those new motors, now, and if you really did blow your motor, you can have my old one, I won't be needing that anymore...

The whole lot of boards are travelling to Canada plus one more to California.

The whole lot of boards are travelling to Canada plus one more to California.

FIXED IT, with a 9N50 N channel mosfet I had in the stash. Thanks for the advice and otherwise educating me again, Sergey. That sucker should dissipate heat better, anyway, it's a lot bigger.
I have another contender, though. A 5N60 that I think would work, too.

Congrats Sergey, that's great news that your board is selling so well!!! I guess modding the BB is like modding cars and motorcycles, if the upgrade can give me more HP, I have to have it! Speed, power, more speed, more power!!!

Two more full auto mod boards for Drozd Blackbird are on the way to the US and Canada.

I sent out a lot of ver.3 boards in the last couple of months. Dear owners, why don't you post your pictures and videos in this thread?

If you want to stay anonimous just send your photos to my e-mail (e-go[at]inbox[d0t]ru) or post them to any photos storage service and then send me the link. I'll place your photos here. There haven't been any new pictures here for a while.

Yours,
Sergey.

St. Petersburg (Russia) and Nevada.

Still waiting for your cool pictures here.

Sergey.

Hey, I know I must be the typical guy asking but... How much does your board cost? Thanks, Evan Toland

Oh, and if I do get the board I will post pics of the install and finished product.

As I don't need to make DC-DC converter any more, the new board price is reduced to USD 120.

Here's my contact info:
E-mail: e-go@inbox.ru
Skype: sergey.pismensky
Phone: +7-950-177-2500.

Yours,
Sergey Pismensky.

Thanks for the quick response. Why does the need for the dc-dc go away? Thanks

Two more boards are on the way to Canada.

Sure, youtube helps a lot. Thanks Bubb, Camracer, DrozdAndConfused and all. You're a great company.

Although this is a new pic, mine has been around awhile, I had the v2 board, already, so I didn't have to do anything but drop the v3 board in. But lead by example, here's mine.

Hi all:

Sergey writes that my board #30 is on its way. That means I'll have to get to work installing it. Any hints on that process would be much appreciated. (I've got a DrozdMax with the long barrel but still using 88 gram CO2.) Any suggestions on the voltage? I'm running 12 now.

Thanks. / Greg

Indonesia joins the club.

Thanks Camracer, need to learn alot from all of you

...need to learn alot from all of you

Twenty!! Wow!

Russia is not the US.It is a huge country.I believe it has something like 10 times zone.Also things do not work as well as in North Amreica. There is also some corruption.My last parcel from Sergey took way less than 10 days.There is tracking and different levels of speed of delivery. Things happen more slowly there.

Russia is not the US.It is a huge country.I believe it has something like 10 times zone.Also things do not work as well as in North Amreica. There is also some corruption.My last parcel from Sergey took way less than 10 days.There is tracking and different levels of speed of delivery. Things happen more slowly there.

20, 40, 400 or 5000? Production strategy depends on it.

It's got a be a honor system but everybody can see the orders from there computer like I said before I got web space and I can build sites


I looked last nite at domains like www.sergeyboards.com
Let me know if I can help k

hey cam

i added a related link to the youtube our i can add specific
links just post the link in your post and tell me if you want it as
a source link or video like whats on there i basically picked one
to get it up i can change anything

i just put a red star at the top but its not finished tell me if it should stay or go i havent merged the background into the star i dont know


thanks guys for the comments remember we all started this
read the very bottom of the page guys

I moved it up because it depends on your browser check for. Full screen view

Santa Clarita if u need any site stuff let me know it's just a hobby I just like to help

we have these green lasers at work that will pop ballons 150 yards in the sky if u keep it on the ballon long enough all that heat condensed in such a small package u need a 1 phase 220 v laser that will pop some shit

nice i live off via princessa to the left up the hill by the new park

Nice! I've been waiting for it to cool off a bit so I can go up to "A Place to Shoot" to sight in some of my power burners.

Ladies and gentlemen, please welcome Ukraine.

Quote: Sergey_new_pcb at 17:26:20 Wed Oct 12 2011

Ladies and gentlemen, please welcome Ukraine.

Welcome!!!

[ Too Many Emoticons In Post; Maximum 3 ]




Hey where are they... Oh wait... I get it now.

I bet they have glow in the dark BB's there, with Chernobyl near by.

Hi all:
Reading all the posts from the very start gave me a feeling for the real community aspect to this board. There are some very nice people here. Camracer, I read your very first post--man, you have come a long way. You're a "wise old head" now.

Regards. / Greg

DAMN, ....
yall are terrible.......hehehe

So like any other sensible Drozd Blackbird owner, I want a Sergey board! But you guys all sound like you've got the skills and the tools to do a beautiful job making the holes/buttons, and I don't have any of the tools and my skills are rusty! Does anybody here do the machining/etc. for others? I don't see how the Sergey boards will really take off as a business somebody is doing nice installs for others.

Q

You can have Ray at Drozdmax install the board for you. .. He does a great job and service/prices cant be beat.

Im going to go the route Im sure ST is-to get one of his drozds set up for Cams Drozd hc mag and then send it to
DBB for the assembly with Serges board. I got my hand full with Firearms and Airgun repairs.

I love the way Drozdandconfused did his, that is FREAKIN' AWSOME!!!

DrozdBlackBeard

Quote: Sonytec

I love the way Drozdandconfused did his, that is FREAKIN' AWSOME!!!

Thanks SONYtec. I think it can be done without the CNC with a drill press and using the rubber buttons or the plastic ones that come with the board. Like how cam did it with the four holes drilled first to frame the window. The only difficult part is hand cutting and filing the plexiglass to fit snug without scratching it. The rest is pretty basic.

There are you tube Drozd, and bb vids that you can run for here.

Also you cant refect upon here the avg age here(bekind0. Errrrr.... may want to screen whats on the forum :P

Yes, there is a laser in my new project but no, it's not a gun at all Am I successful in keeping you intrigued?

Am I successful in keeping you intrigued?

Sergey, Crosman/Benjamin is using something like your pulse adjustment tech on their PCP guns. Variable fps and it also monitors tank pressure. Electronic trigger too.

http://www.pyramydair.com/s/m/Benjamin_Rogue_ePCP_Air_Rifle/2399

Quote: Sergey

Am I successful in keeping you intrigued?

Of course!

New to the forum but i did just get Sergey's board #38 installed, and all i can say is wow. Ive been reading through all the posts for the last year seeing all the mods everyone has done and couldnt wait to get back home to start mine. That was the first thing i bought with some of the money i saved up from this last deployment. The install was so much simpler than i thought it was going to be. A little time a dremel, drill, and some files and it was done. Its a whole different gun now. All i can say is thank you Sergey

I know there are plenty of posts out there about solenoid and collet adjustment but i cant seem to find any good links with pictures on it. Does anyone have a link with pictures of how far back or foward they have theirs adjusted. Just looking for a good starting point to put mine. Just dont know if the collet should be bottomed out against the frame or what.

thanks alot cam i had the collet way foward. right now im in the process of copying one of yours and dubbs mods, with the solenoid connection between the grip and front housing. Once i saw that post i couldnt wait to get started. I already had gold bullet connectors on the wires. I liked your way much better though.

yeh Cam that is a sling swivel stud i put on it a long time ago. Luckily its out of the way just real close. It doesnt interfere with the button or vice versa. Just got lucky on that. ill be ordering a SMG barrel soon and a MT valve

Yeh I know the wires won't be a problem but I do want to put some kind of plastic piece between the springs so there is no chance of a short.

Yeh I know the wires won't be a problem but I do want to put some kind of plastic piece between the springs so there is no chance of a short.