How to remove PF battery box overload protection?
Posted 13 October 2012 - 01:19 AM
can somebody help me out please? i am using the normal new PF battery boxes (as in the 4x4 crawler).
Posted 13 October 2012 - 08:03 AM
That thing needs to be shorted. Philo used a simple solder to short it, but it could also just have been a wire. It doesn't matter as long as that resistor or whatever it is is shorted.
Just beware that if you do this and then short a couple of wires to the motors (Not really possible) you will damage the batteries and they might explode.
Edited by Carsten Svendsen, 13 October 2012 - 08:01 AM.
Posted 13 October 2012 - 02:23 PM
His photos below show the location of the current-limiting fuse. The first picture shows "Both sides of the PCB. On top side, from left to right, we see:
* D2, a power diode, preventing voltage reversal on PF output connector
* The PF connector
* LED D1 and series resistor R1
* PCB pads for slider switch
* Resettable fuse R2, limiting output current"
Edited by DLuders, 13 October 2012 - 03:14 PM.
Posted 19 October 2012 - 03:18 PM
the batteries will explode (or go up on flames) if they are shorted, which means: trying to connect 2 PF battery boxes for example.. or using modified cables.. but ONLY if you modified your PF battery boxes as in the pictures above. if you dont modify them then you can do whatever you want because there is a thermal protection.
if you stick to normal lego parts then it is most unlikely that you shorten them without noticing.
btw i just did this with one of my battery boxes and the results are INSANE. this is SICK.
ive built a very basic vehicle with 1 battery box and 2 buggy motors and 1 V2 reciever. its faster than my car with 8 XL motors...
Edited by Ximbary, 19 October 2012 - 03:19 PM.
Posted 19 October 2012 - 06:08 PM
what are the risks of the batteries exploding on the other lego parts? will it damage them?
How did you get 9v ro PF?
Posted 19 October 2012 - 11:58 PM
all you have to do is to connect the 2 metal ends of this HL5L thingy as in this picture.
i have never done solding before but i got it done with an extremely cheap solding gun (or whatever its called) on 4 battery boxes without fails within half an hour. its really a piece of cake.. but you have to take care that the solding is done rather thin or you will not be able to push the button of the battery box towards the right position anymore.. :D
Edited by Ximbary, 20 October 2012 - 12:00 AM.
Posted 21 October 2012 - 12:29 AM
This should be useful for my f1 car as I want it to be fast and im trying to make it light by using unnessesary fixings if there is another one tht requires les parts.
Edited by SNIPE, 21 October 2012 - 12:30 AM.
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