Decoder fitting Mallet 2085D

morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
Hi all,
I bought on ebay.de a 2085D with a motor 2 defected for 270€.
The seller thouth that it was analoug.
When i opened it the first time i found inside an Electronic circuit with a relè, many high power resistence and diode so i thouth that somebody have already modificated it.

Here some photos :
4f1296499cb2c6b998979ec3d16b162a.jpg
88aa4d895d92c551d9a90faa14f30651.jpg
5573f840cb9817903c55d4c5c3c7d9a2.jpg
fe5f7d37409bf7ebe92dd68b9e2ace58.jpg



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morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
So, i removed all and start to find the engine problem... I find an unsoldered wire on the engine so i re connect it and the loco work without any problems !!

I decided to install an Uhlenbrock 77500 + 32300 sound with 50 mm speaker 8 ohm and power buffer .


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morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
when dismantling the loco has experienced a problem: the frame resulted curved concerns where the weight of lead !!
So i installed an alluminium "L" profilate screwed on the frame so i solved the problem [emoji6]
5e8f881d93cee54a6542d312b8864608.jpg

d3b95f553fa137458ae2e6df025d7a06.jpg

6382f5d13ee6c512d31af3dae05ec258.jpg



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morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
Then i placed the decoder on the lead :
1118c3d3444ead21666faa6c15c9d6fb.jpg

e373dc64983477b13ed42c49af51884b.jpg


And i try ti reclose the loco:
feb0072c88b3c58d920eda12015e9f13.jpg



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morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
Lights and smoke generator works at 5 V so i dimmered the outputs and all works very well !! [emoji4]

Then i assembled the power buffer and placed it in the front Of the boiler down the smoke generator ...
c52ada59119f9f0beb38a18a64d0503a.jpg



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morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
To work with power buffer i setted cv29= 2 (only dcc) and i connect a manual switch otherwise is impossible to write the cv [emoji6]

On next saturday i'll record a video ! Bye Francesco


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mike

Master at annoying..
Staff member
GSC Moderator
24 Oct 2009
50,528
3,765
Rossendale
www.gscalecentral.net
a bargin, and a brillint repair, and up grade, nicely done!! ???
 

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
28,124
2,895
Tamworth, Staffs.
Excellent bit of detective work..
Await the video with interest.
:happy: :happy:
 

morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
Thank you for your compliments [emoji6]
On the our italian forum, tell me that at the and of 80's were sold Electronic homebrewing kit ... Before DCC standard and probably it was that i find insede the loco !! prehistory of digital [emoji23][emoji23]


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morionds

I'm New, Please Be Gentle
13 Feb 2015
239
28
I still have to adjust the inertia ... Here is the video of first trial tour ;)

https://youtu.be/Iu3iZ9G-3bo

https://youtu.be/p9KHlMA0-Z0

Bye Francesco


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