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8.4v with sr 12?


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#1 sjwocelka

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Posted 02 June 2014 - 08:05 AM

Hi. Will a 1600 mah 8.4v volt work with the m120 spring in the sr 12? I would just use it temporarily until I can upgrade the gun to use a lipo. I was just wondering if it would be unhealthy for the gearbox and stuff to use an 8.4v. Thanks to all who reply!

#2 tales

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Posted 02 June 2014 - 09:41 AM

Mostly would be the motor that pulls the spring
KWAs stock motor can pull a 120 spring with no problem
Using a 8.4volt battery

Edited by tales, 02 June 2014 - 09:42 AM.


#3 choochoo

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Posted 02 June 2014 - 10:22 AM

I don't think it'll be unhealthy for your gun.  But, you would definitely see a reduced rate of fire and the lag in your trigger response will be more pronounced.

#4 sjwocelka

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Posted 02 June 2014 - 02:20 PM

Ok. I can handle the lower rof. Temporarily. As long as is won't hurt my gun which I was worried about. Thanks!

#5 Chuck S

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Posted 02 June 2014 - 02:51 PM

... and the gun needs no "upgrades" for a LiPO battery.

-- Chuck

#6 sjwocelka

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Posted 02 June 2014 - 05:04 PM

View PostChuck S, on 02 June 2014 - 02:51 PM, said:

... and the gun needs no "upgrades" for a LiPO battery.

-- Chuck
Ya. Your right. I guess I meant "upgrades" meaning for it to last longer while using an 11.1 volt lipo. And Chuck, if I already have an 11.1, can I use that lipo on it before I do my upgrades on it? (pretty much meaning adding a mosfet and thicker wiring) I understand you kind of just said I could but I guess I need reassurance.  :D

#7 tales

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Posted 02 June 2014 - 05:19 PM

You. Can use the 11.1 lipo
Kwa wires can handle it no need to change them

If you're looking for a higher ROF it would be a HS motor
You need
More volts will increase the ROF  high speed motor will increase it much Moore then a stock motor
That could lead to other problems



#8 tales

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Posted 02 June 2014 - 05:20 PM

What is your goal?


#9 sjwocelka

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Posted 02 June 2014 - 05:20 PM

Ok great. Exactly what I wanted to hear.

#10 sjwocelka

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Posted 02 June 2014 - 05:22 PM

My goal is to achieve better better trigger response and ROF. I don't need too much ROF though. I don't think i would ever get a new motor because that would give me more than i need. And this post is for the sr 12 but could the km16br handle an 11.1 lipo too? are they the same insides?

#11 tales

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Posted 02 June 2014 - 05:27 PM

Not exactly true, a high torque motor will give you nice trigger response
And yes same for KM16

#12 sjwocelka

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Posted 02 June 2014 - 05:32 PM

Oh ok. What about a mosfet? Can i go without one for a couple weeks? without it, I can get trigger arcing. can I not get trigger arcing if I pull the trigger quickly, and firmly?

#13 tales

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Posted 02 June 2014 - 05:35 PM

KWA trigger contact is well built yes you should be fine



#14 tales

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Posted 02 June 2014 - 05:44 PM

I been removing my mosfets, just my choice.

KWA trigger switch with Tamiya switch lube (prevents arcing) used with lipos
Posted Image

With the lube removed no arcing (looks new thousands of rounds)
Posted Image

NonKWA trigger switch, no lipo no lube lots of arcing
Posted Image

Edited by tales, 02 June 2014 - 05:47 PM.


#15 sjwocelka

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Posted 02 June 2014 - 05:45 PM

that helped a lot. Thanks

#16 tales

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Posted 02 June 2014 - 05:57 PM

Another thread with pics of KWAs trigger
http://www.kwausa.co...showtopic=12482

#17 choochoo

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Posted 03 June 2014 - 08:49 AM

I have a SR12 and with a 9.6Vdc 3800mAh 15C large type battery and stock motor/stock gearbox, the ROF is approx 20bps.
With a 11.1Vdc lipo and Lonex A2 motor, the ROF is approx 24~25bps, which is more than sufficient for me.




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