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MOD: 4511 & 7740 Power Functions AA Battery Box (Orange Switch)

Power Functions 7740 4511 hack conversion 12v to PF 9v to PF

2 replies to this topic

#1 Luke_likes_Lego

Luke_likes_Lego

    Posts: 238
    Joined: 14-September 10
    Member: 13247
    Country: Australia

Posted 17 November 2012 - 11:08 AM

Hi Everyone,

Many PF users would be familiar with this battery box:

Posted Image

Pro's :
Takes AA batteries (6xAA should last longer than 6xAAA)
Cheap (about 1/3 to 1/4 of the price of the AAA 8x4x4 version)
I seem to have lots of spares :tongue:

Cons:
Awkward shape
Too large to fit in the 'compartment' section of most trains  :wall:
Not many studs


Anyway, as I had some of these battery boxes sitting around, and I wanted to convert my:
  7740  12V to PF; and
  4511 9V to PF
using the 9V motor with PF attachment, I have made the following attempts and shown the approach below with some pictures.

Please take note.... I'm not suggesting this is better or even equivalent to using the AAA or rechargeable battery box......
....just something I have done to make use of my AA battery boxes  :innocent2: . Hopefully it might be useful to someone !!


4511:  World City High Speed Train

New Carriage:
Posted Image Posted Image

Tha AA battery box revealed:
Posted Image Posted Image Posted Image  

Held in place by four pins in each end (and gravity):
  Posted Image

And the flawless (get it? :head_back:) reason this battery fits :
Posted Image Posted Image Posted Image



7740: Inter-City Passenger Train

I'm not as pleased with the look of this one - which is a bit over utilitarian....but hey...on a practical level it does the job !!

Roof is modified in the front for the IR receiver and in the rear for the protrusion of the battery:
Posted Image   Posted Image   Posted Image

The switch is integrated into the pantograph, which slides into the three different positions (camera also shows my 1x6 black plate in need of a good clean :blush:):
Posted Image   Posted Image

Removal is easy enough:
Posted Image   Posted Image  Posted Image

From the rear:
Posted Image   Posted Image


All the best. Please feel free to fire any questions at me. I have the lights working in the 4511 and my next project is to do the equivalent in the 7740.

Cheers

LLL

Edited by TheBrickster, 19 November 2012 - 01:43 AM.
Edited title as requested.

Posted Image

#2 Locomotive Annie

Locomotive Annie

  • A Perfect 317


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    Member: 32535
    Country: New Zealand

Posted 17 November 2012 - 08:26 PM

That's really clever LLL.  I particularly like what you did with the passenger coach and I can see myself doing something similar to that.
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#3 Electricsteam

Electricsteam

    Posts: 494
    Joined: 18-November 12
    Member: 33090
    Country: USA

Posted 19 November 2012 - 11:00 PM

Ha Ha Ha :laugh:  I like what you did with the passenger coach , It really got me when I first saw the picture but still amazing and I may do this also :laugh:
I'm not dead! I for the matter of fact appear to be very much alive!



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Also tagged with one or more of these keywords: Power Functions, 7740, 4511, hack, conversion, 12v to PF, 9v to PF

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