Running 22.2V

[Bakasaur]

Hey guys,

So for awhile now I've been pondering the thought of running a gun off (2) 11.1V lipos that I have sitting around. They both fit into the crane stock quite nicely, and it seems possible.. but is it worth it?

The gun is equipped with a MERF 3.2, a Lonex A2, 14AWG wiring, and a whack of other stuff. There's not a stock part left on it.
I would have to take the MERF out, as that can't handle anything above 14.8V But what about the rest of the system? What would a motor do when connected to that type of current/amps?

I'm thinking it's going to crash and burn, literally.

Has anyone tried this? What results would be expected?

Thanks

[pestobanana]

Originally Posted by Bakasaur

Hey guys,

So for awhile now I've been pondering the thought of running a gun off (2) 11.1V lipos that I have sitting around. They both fit into the crane stock quite nicely, and it seems possible.. but is it worth it?

The gun is equipped with a MERF 3.2, a Lonex A2, 14AWG wiring, and a whack of other stuff. There's not a stock part left on it.
I would have to take the MERF out, as that can't handle anything above 14.8V But what about the rest of the system? What would a motor do when connected to that type of current/amps?

I'm thinking it's going to crash and burn, literally.

Has anyone tried this? What results would be expected?

Thanks

Expect a Lonex motor to get hot and burn the brushes quickly. Considering your gun doesn't feed properly at 30 RPS it may jam and strip your piston. Running a DSG on 14.8V is not uncommon, and I've heard of a guy running a 18.5 in a high power + high speed gun, so 22.2 would probably work if you do things correctly.

Maybe you should learn the basics of electronics before you attempt this. To get 22.2 V out of two 11.1 V packs you have to wire them in series. This will not increase current (amperage). I remember learning this in grade 6.

[ThunderCactus]

22.2 would kill most electronics, not to mention high voltage is very bad for your motor. And you wouldn't be running at 22.2v, you'd be running at 25.2v.
You'd gain some ROF from wiring them in parallel due to lower resistance though.

[Bakasaur]

Originally Posted by pestobanana

Expect a Lonex motor to get hot and burn the brushes quickly. Considering your gun doesn't feed properly at 30 RPS it may jam and strip your piston. Running a DSG on 14.8V is not uncommon, and I've heard of a guy running a 18.5 in a high power + high speed gun, so 22.2 would probably work if you do things correctly.

Maybe you should learn the basics of electronics before you attempt this. To get 22.2 V out of two 11.1 V packs you have to wire them in series. This will not increase current (amperage). I remember learning this in grade 6.

Oh you're so funny. And you don't know the basis of leaving electronics in the cold. I also hear you like to fill buffer tubes with cement. Feeding problems are all fixed in the gun, it was a $3 delayer that failed. This isn't going in my M4 either, it's going in a different project.

I managed to trade a guy for a Chrono too, getting that tomorrow.
And I wouldn't want you being anywhere close to an "apprentice" of mine, as based off your earlier thread. I don't think you have nearly the skill of what my employees do, and don't deserve near what I pay them.

But I digress.

I'm aware I would have to wire them in series.. I have the Y-splitter from my buddies RC car. But yes, I have heard of guys running 18.5s on DSGs, that's what got me thinking of it. I'm debating seeing if I can get lower amperage batteries, so that it wouldn't be as much of a load on the gun.

Originally Posted by ThunderCactus

22.2 would kill most electronics, not to mention high voltage is very bad for your motor. And you wouldn't be running at 22.2v, you'd be running at 25.2v.
You'd gain some ROF from wiring them in parallel due to lower resistance though.

How would it be 25.2v? Even if it were a 6S Lipo, that would only be 22.2V, wouldn't it?

[Wrath144]

Fully charged 3S lipos are at 12.6V.

[Bakasaur]

Originally Posted by Wrath144

Fully charged 3S lipos are at 12.6V.

RIGHT, thanks! That slipped my mind. I've been addicted to GBBRs lately, I forgot about that.

[pestobanana]

Originally Posted by Bakasaur

Oh you're so funny. And you don't know the basis of leaving electronics in the cold. I also hear you like to fill buffer tubes with cement. Feeding problems are all fixed in the gun, it was a $3 delayer that failed. This isn't going in my M4 either, it's going in a different project.

I managed to trade a guy for a Chrono too, getting that tomorrow.
And I wouldn't want you being anywhere close to an "apprentice" of mine, as based off your earlier thread. I don't think you have nearly the skill of what my employees do, and don't deserve near what I pay them.

But I digress.

I'm aware I would have to wire them in series.. I have the Y-splitter from my buddies RC car. But yes, I have heard of guys running 18.5s on DSGs, that's what got me thinking of it. I'm debating seeing if I can get lower amperage batteries, so that it wouldn't be as much of a load on the gun.



How would it be 25.2v? Even if it were a 6S Lipo, that would only be 22.2V, wouldn't it?

Somebody's mud. Very mud.

[Stealth]

I don't recommend anything above 14.8V. I'm led to believe that above those voltages, the potential difference will be far too great to be sustained. (namely if you remove the FET, your trigger plates and/or wiring will overheat. After all, you're going to be passing over 400watts of power through some maximum 14awg wire)

You're definitely welcome to try it and let us know. I'm actually fairly curious but understand that it's beyond the realm of practicality.

[lurkingknight]

6s lipo would probably fry the fet I'd imagine.. or at least the supporting components of the fet on the pcb itself. Might even melt the traces off the pcb.

If the power makes it through, then your gears will probably destruct the piston or themselves... as they'll be traveling faster than the system can cycle.

Mechanically I suppose you could get it to function... practically speaking, feeding will be the issue. I'm reasonably sure people have cracked the >100rps cyclical rate mark but feeding remains somewhere in the 80s.

[Renegade)]

IF you do this... Film it... Outside

Dont forget the fire extinguisher.

[Azathoth]

are you running the batteries in parallel or in series? In series you are adding voltages. In parallel you are "adding" the Mah values together. Its quite common for RC flyers to run batteries in parallel especially LIPO by using a bridging cable.

[ThunderCactus]

Cycle overlap would be ridiculous as well, any attempt at active braking at those speeds would be...interesting

[K3vX]

I'd say it's doable if everything is engineered around it. But useless.

We're not able to use 14.8v *effectively*. By effectively I mean to plug one and run a AEG as long as you would on a 11.1v. From what I gathered on ASM, excluding any failure due to fast cycle, the motor will eat the brushes much faster, which will lead to much more frequent maintenance.

If you absolutely want something above 11.1v, start with bigger 7.4s since buffer tube lipo are usually not enough to run the kind of setup that asks for a 14.8v. Since 7.4 have more space (one less cell) you could get a bigger mAh rating. Running those batteries in series will give you more voltage than needed.

Once you handle this, you can try going above, but I'm willing to bet it won't serve any purpose other than education or brief entertainment.

[ThunderCactus]

Well if the goal is simply to run the motor at a significantly higher RPM, if you have any interest in motor life you'd be better off modifying and installing a brushless motor lol

[ccyg8774]

... And I thought 4S lipo on AEG is crazy...!