Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 87 users online :: 5 registered, 0 hidden and 82 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

12v battery

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

12v battery

Unread postAuthor: metalmeltr » Sat Nov 13, 2010 11:09 am

I wouldlike to build a cannon like this http://www.spudfiles.com/forums/my-first-cannon-ever-with-on-board-compressor-t21937.htmlI need to find an affordable 12v battery and charger combination that is small and compact, i would prefer to have an extra battery as well.
  • 0


metalmeltr
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 426
Joined: Thu Dec 18, 2008 3:42 pm
Location: united states
Reputation: 0

Unread postAuthor: Lockednloaded » Sat Nov 13, 2010 11:36 am

It's pretty common for most of us o use airsoft batterys, but I think thats a better option for people who own airsoft guns because I have no idea how much they cost
  • 0

I love lamp
User avatar
Lockednloaded
Major General
Major General
 
Posts: 1558
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Reputation: 0

Unread postAuthor: velocity3x » Sat Nov 13, 2010 3:17 pm

12v Cordless drill battery and charger
  • 0

User avatar
velocity3x
Brigadier General
Brigadier General
 
Posts: 827
Joined: Fri Jun 05, 2009 3:09 pm
Location: Yuma, Arizona
Country: United States (us)
Reputation: 7

Unread postAuthor: Gun Freak » Sat Nov 13, 2010 3:20 pm

How about an RC battery?
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: jimmy101 » Sat Nov 13, 2010 3:30 pm

A possibility is a small 12V lead-acid gel battery. For example;
http://www.allelectronics.com/make-a-st ... ERY/1.html
3.8" x 1.7" x 2" (that's pretty small), 1.21 lb.
$10 (+$7 shipping IIRC)

Can be recharged with a car battery recharger (or straight off a running car using jumper cables.)

Take a look at the other 12V batteries at AllElectronics.

You can also get chargers there (and not have to pay additional shipping).
http://www.allelectronics.com/make-a-st ... IES/1.html
$10
  • 0

Image

jimmy101
Lieutenant General
Lieutenant General
 
Posts: 3128
Joined: Wed Mar 28, 2007 9:48 am
Location: Greenwood, Indiana
Country: United States (us)
Reputation: 7

Unread postAuthor: metalmeltr » Sun Nov 14, 2010 6:52 am

would like to avoid lead acid, just for weight

i was looking at milwalkee m12 but that is expensive
  • 0


metalmeltr
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 426
Joined: Thu Dec 18, 2008 3:42 pm
Location: united states
Reputation: 0

Unread postAuthor: motorfixer1 » Sun Nov 14, 2010 9:38 am

The local Ace Hardware started selling similar batteries to the ones listed on Allied Elec. They are off brand sealed lead-acid type and about half the price of Allied. I payed $12.99 for this one and they have almost every other size. In comparison to a nimh or nicd pack the only benefit is cost. The lead-acid pack is a bit heavier than two 6v nicd packs. So if cost is an issue maybe the lead-acid us a viable option. Also chargers were about $10-$15 for a wall charger.
  • 0

Attachments
misc 009.jpg
misc 008.jpg

motorfixer1
Sergeant
Sergeant
 
Posts: 91
Joined: Wed Jul 07, 2010 5:28 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Sun Nov 14, 2010 9:46 am

Why does it need to be electric powered? Have you considered a manual pump built in to the launcher, it will be much lighter, quieter and will probably allow you to reach higher pressures in a small chamber that will give you better performance.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: mark.f » Sun Nov 14, 2010 11:25 am

Because he does not have FOREARMS OF STEEL.
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3464
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 21

Unread postAuthor: jackssmirkingrevenge » Sun Nov 14, 2010 11:37 am

mark.f wrote:Because he does not have FOREARMS OF STEEL.


Well then he ought to self-pleasure more!

:D
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Technician1002 » Sun Nov 14, 2010 12:21 pm

A quick note on batteries. They are rated in Amp Hours. A small 4 amp hour battery can provide 1 amp for 4 hours or about 4 amps for 1 hour or 20 amps for about 12 minutes.

How many shots are you planning and how long does it take to fill your chamber. Battery size matters.

The faster you discharge a battery, the less capacity it has, so on the 20 amp draw, expect less than 10 minutes run time.

The tiny battery in the post above is only 1.3 Amp Hours.. Don't expect it to run a 10 amp compressor very long.

Many NiCad or NIMH batteries have a much higher capacity in a smaller package and can provide high discharge current.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: Gippeto » Mon Nov 15, 2010 12:45 am

We built something along the lines you're proposing a while back. We used a Li-Po battery 3s-2500mah. Charges a 1lb propane tank to 100psi, and gets 25 or so shots per charge.

An inexpensive place to get rc gear,

http://www.hobbyking.com/hobbyking/store/uh_index.asp
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2393
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Unread postAuthor: Technician1002 » Mon Nov 15, 2010 12:48 am

For the math challanged, 2500 mah is 2.5 Amp Hours or about 2wice the capacity of the lead acid battery in the photo. The LiPo is able to provide a higher discharge current than the Lead Acid.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'