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View Full Version : how to make a discharger?


1 Krazy Foo
09-22-2001, 05:08 PM
ok, Id like to know how to make a discharger. I know I can buy them but why would I shell out the money when I can make one right? Im thinking the bulb type dischargers. any sites with intructions would help too. thanks

twism86
09-22-2001, 11:05 PM
Why dont you just run the battery out completly, it works fine and if you have a nickle metal hydride they run then stop dead at empty so you really dont need them.

1 Krazy Foo
09-23-2001, 01:33 AM
sometimes I dont have time to finish the pack off, so a discharger would be nice. also I dont run nickle metal hydride.

guggi101
09-23-2001, 09:46 AM
Well you should be able to take 5 dc light bulbs and run a wire to all the negatives and a positives to all the positives on the bulbs. It help to use red wire for poitive and black for negitive. Then get the opposite connector of your battery and place it on the battery connector to determine which is positive and which is negitive. once you know put the proper one to the wires on the bulbs. then it should discharge. If I am incorrect someone tell me because i very well could be but that should work

1 Krazy Foo
09-23-2001, 05:59 PM
hmmm thats what I figured. Got any idea of what kind of bulbs? like part numbers or anything?

Obi112
09-23-2001, 06:58 PM
http://www.nascart.com

They had a bunch of tutorials, including a discharger and auto cut-off, but the site is down right now (at least, I hope it's only a little downtime).

1 Krazy Foo
09-26-2001, 07:35 PM
I just read in the new RCCA what to use and to use 15 or so bulbs. Thanks for the help

chizzler
09-26-2001, 07:40 PM
use 10 "1157" standard car bulbs........

1 Krazy Foo
09-26-2001, 07:59 PM
I think thats what the mag said too, I just dont remember what it was exactly.

thanks, now I have to go buy some lights

chizzler
09-26-2001, 08:18 PM
this should help.........................



http://www.balakracing.com/bulb_discharger.htm

or check out the february issue of rcca

TSR6
09-26-2001, 09:24 PM
Take a look at the Racer's Edge bulb discharger. It comes assembled in two versions, one with cutoff and one without. The auto-cutoff prevents it from over discharging the cells.

Deans also makes a bulb discharger with the Deans Ultra plug already installed, but does not have a cutoff. The Deans also comes in a kit version with every thing you need other than solder & a soldering iron.

Troy

1 Krazy Foo
09-26-2001, 10:10 PM
Id buy a discharger but why? when I could build one. and making a cutoff wouldnt be hard, Id get my electronics teacher to help

sixandeightstringer
09-27-2001, 03:17 PM
The link from earlier:

http://www.balakracing.com/bulb_discharger.htm

There's a link from that one to a fancy cutoff with a voltmeter and everything. There's also a simpler cutoff at:

http://moe.intelos.net/~rpm/Articles/Cutoff_Switch/cutoff_switch.html

And Dean's also makes an inline cutoff similar to the one above.

As for running the packs out in the car, I've read that it's not a good idea to purposely drain the battery in the car. I forget exactly why, so take that with a grain of salt.

I'm currently building a discharger and cutoff like the balakracing page one. It's not hard if you can handle a soldering iron.

chizzler
09-27-2001, 06:51 PM
yeah, a good adjustable soldering iron will help a load with the building of the bulb discharger;)

HauntedMyst
09-28-2001, 01:03 AM
You guys are nuts with your "fancy" dischargers. Dischargers schmischargers. I just suck a big sip of water into my mouth and hold the battery ends against my braces. When my mollars stop jiggling and I can see straight again, I know the pack is discharged.

1 Krazy Foo
09-28-2001, 01:20 AM
:p I dont have braces so thats out :D

~The user formerly known as Strange Desires~

HauntedMyst
09-28-2001, 09:35 AM
Why did you change your nick? Strange Desires was a cool nick

1 Krazy Foo
09-28-2001, 03:36 PM
I made my name Strange Desires on the old board when we where able to change our screen names (for about a week, then Steve turned it off :rolleyes: ) Now that we switched over to this board my name went back to what I origanaly registered under. I had a Strange Desires acount but I messed it up, I cant remember what I did. I need to email steve and ask him if he can change my name back, but Ill wait. He is probably flooded with emails since the board change (if he wasnt before)

(too bad sigs were turned off, that way I wouldnt have to write this in)

~The user formerly known as Strange Desires~

Cosmo
09-29-2001, 12:10 PM
I use the 1157 bulbs, but I soldered 10 sockets onto the brass bars. That way I can remove bulbs to discharge at a lower rate for my 4 cell packs.

1 Krazy Foo
09-29-2001, 09:12 PM
where did you get the sockets?

~The user formerly known as Strange Desires~