View Full Version : Mini-Z Lit 12v DC Charger Mod

2006.12.27, 07:28 PM
i've been reading all about DarthRacers 12vDC Micro-T Mod (http://www.ripper7racing.com/r7rforums/showthread.php?t=458)

i am planing on doing this for the Lit base charger as well. I will post as detailed info as i can for this mod here.

2006.12.27, 07:39 PM
so far i've ordered the following:
Size M Panel-mount Coaxial DC Power Jack (http://www.radioshack.com/product/index.jsp?productId=2102486&cp=2032058.2032231.2032284&parentPage=family)
Size M Coaxial DC Power Plug (2-Pack) (http://www.radioshack.com/product/index.jsp?productId=2103614&cp=2032058.2032231.2032284&parentPage=family)

my intention was to wire these to adapters to connect to my modified pitbox (http://mini-zracer.com/forums/showthread.php?t=23352). the other option is to use a 12 VDC 500 MA REGULATED POWER SUPPLY (http://www.allelectronics.com/cgi-bin/item/PS-1251/815/12_VDC_500_MA_REGULATED_POWER_SUPPLY_.html). i have yet to confirm that this particular power supply would be adequate.

my custom adapter for my modified pitbox is made from 20ga paired wire with banana plugs to connect to the 12v jacks on my pitbox with the above dc power plug and jack to be installed in the base changer.

here are the parts for my adapter wires
Flexible Banana plugs (2-Pack) (http://www.radioshack.com/product/index.jsp?productId=2103796&cp=2032058.2032231.2032280&pg=2&allCount=325&fbn=Cable+type%2FBanana+plugs+%26%23038%3B+jacks&f=PAD%2FCable+Type%2FBanana+plugs+%26%23038%3B+jac ks&fbc=1&parentPage=family)
Banana Jacks (2-Pack) (http://www.radioshack.com/product/index.jsp?productId=2102840&cp=2032058.2032231.2032280&pg=2&allCount=325&fbn=Cable+type%2FBanana+plugs+%26%23038%3B+jacks&f=PAD%2FCable+Type%2FBanana+plugs+%26%23038%3B+jac ks&fbc=1&parentPage=family)

2006.12.28, 09:07 AM
I did it. It is a cool mod, works like the Epoch charger.
This setup works flawlessly.
Lit1 (http://alain.galluser.free.fr/Z/061228AdapteurLit/01.jpg)
Lit2 (http://alain.galluser.free.fr/Z/061228AdapteurLit/02.jpg)
Lit3 (http://alain.galluser.free.fr/Z/061228AdapteurLit/03.jpg)
Lit4 (http://alain.galluser.free.fr/Z/061228AdapteurLit/04.jpg)
Lit5 (http://alain.galluser.free.fr/Z/061228AdapteurLit/05.jpg)

2006.12.28, 09:18 AM

did you splice the wires into the wires from the battery tray or run them directly to a point? it's hard to tell from the reflection on the plastic.

2006.12.28, 09:26 AM

did you splice the wires into the wires from the battery tray or run them directly to a point? it's hard to tell from the reflection on the plastic.

I simply soldered the 2 wires on the +/- metal tabs of the AA battery tray :) The wires seem to go to the circuit board but in fact I just routed them there through an existing hole near the Lit battery hole. From there, the wires are taped on the underside to reach the connector.

2007.01.02, 12:46 AM
arch2b - have you figured out what fried your charger?

Fovea3d - do you have any batteries installed when you are using DC input?

How I have the Micro-T charger wired is the following:
The DC and batteries both connect to a common ground point on the batery tray. The switch is DPDT and is used to select and isolate the batteries from the DC source. The positive wire of the battery tray was disconnected and soldered to one of the center tabs (one throw) of the switch which is connected to the charging circuit. The positive side of the battery tray was connected to one side of the switch and the positive input from the DC source is connected to the other side of the switch. The switch then selects between the two inputs. The other "throw" of the switch was used to wire up a power on LED circuit which is connected to the DC input.

2007.01.02, 03:08 AM
Fovea3d - do you have any batteries installed when you are using DC input?

Of course not :eek: I only put batteries if I need a portable system if there is no outlet available where I go.
Smart idea with the switch though.

2007.01.02, 05:18 AM
no, there were no batteries in the charger. i don't plan to ever use batteries in the charger

2007.01.05, 10:41 PM
scratch this idea :( due to the internal board component going up in smoke, i simply installed some wires and ran them to the exterior so that i can attach to my digital peak charger instead.

in the long run i should get better charges this way so it may have been the best thing to do anyway.

next question, what are the optimum charger settings for the lit cells?

this is for a pirahana digial peak charger.

2007.01.10, 09:29 PM
So, how good is the Lit? Is it worth getting? I've wanted one ever since they came out but have not heard if their any fun to race or not. Are they Mini-Z fast, or Epoch slow?

2007.01.10, 09:39 PM
mini-z fast but no racer. these will not compete with a full size racer.

if you like fun, these are cool but if your going to race, don't waste your money

2007.01.11, 10:23 AM
Ok, thank's for the info. I might get one for cruising around the house though. But not for taking to the local track for competition. Still trying to decided what I want for my ultimate racer. Any suggestions?

2007.01.11, 10:55 AM
you have numerous threads on project cars and have commented many times on which cars you would like to race at the track.

personally, i prefer to stick to the k.i.s.s. principal whenever possible. (keep it simple stupid). you do not need a $700 car to win. all you really need is practice. you can do well with any chassis type an minimal upgrades provided you practice enough. you can spend tons of money but in the end all it means is your driving an expensive car around, nothing more.

pick a chassis, read up on setups and go from there. chirstian already has a grreat thread for the awd. ther eare numerous for the mr-02 and even some tips for the mr-015 sprinkled around. check with sai tam about racing the mr-015.

basically, everything you want to know is already here. just take the time to learn from it.

back to the topic, unless there is a class just for the lit, i would not spend the money. your crt you got will easily beat the lit in handling and has a faster motor.

2007.01.11, 11:55 AM
Thanks arch. I love the CRT and maybe the only micro-car I need, that and the Micro-T of coarse. Both are great fun in the house.
My GoldMember MR02 has already won me one race. I posted about it previously so I won't repeat it here.
Perhaps just get the body for the Lit as part of collection and don't bother with the chassis. There are ton's of stuff on my wish list and it's hard to decided where to start. The Lit just seems like a cool peice to add to the collection more than anything else.