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Author Topic: Cotton Abbotts  (Read 2081 times)

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Online Innovationgame

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Re: Cotton Abbotts
« Reply #30 on: May 25, 2018, 07:00:26 am »
With the DMUs done, I am hopefully through (for the most part) having to deal with Bachmann's six pin decoder. They've been absolute pigs to just set the address. I had to program them in my decoder tester, because they just wouldn't work when in the unpowered car.

I bought five of them in a fit of enthusiasm when I started, a few years ago, and quickly realised they weren't up to much. Fortunately, I have five MUs, so they've all gone into unpowered units.

In the decoder tester, you can hear the motor note changing for each speed step, and although the chip recognises 128 steps, it only actually implements 28, so you increase the speed four or five steps before there's a change in motor sound.
Yes, I bought a set of Bachmann decoders in ignorance when I started with DCC and I think at least some of my problems are decoder based.  I will, eventually, try to replace them with Lenz, but I don't know whether there is replacement for the right-angled decoder in 6417.
With kind regards
Laurence
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Online Yet_Another

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Re: Cotton Abbotts
« Reply #31 on: May 25, 2018, 12:54:26 pm »
I don't know whether there is replacement for the right-angled decoder in 6417.
Funnily enough, that’s the only steam loco I possess, and I put the Bachmann decoder in. I’m considering using a Zimo MX622N, which has very long pins, and bending them to fit.
Tony

'...things are not done by those who sit down to count the cost of every thought and act.' - Sir Daniel Gooch of IKB

Offline cjdodd

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Re: Cotton Abbotts
« Reply #32 on: May 25, 2018, 04:37:51 pm »
With the DMUs done, I am hopefully through (for the most part) having to deal with Bachmann's six pin decoder. They've been absolute pigs to just set the address. I had to program them in my decoder tester, because they just wouldn't work when in the unpowered car.

I bought five of them in a fit of enthusiasm when I started, a few years ago, and quickly realised they weren't up to much. Fortunately, I have five MUs, so they've all gone into unpowered units.

In the decoder tester, you can hear the motor note changing for each speed step, and although the chip recognises 128 steps, it only actually implements 28, so you increase the speed four or five steps before there's a change in motor sound.
Yes, I bought a set of Bachmann decoders in ignorance when I started with DCC and I think at least some of my problems are decoder based.  I will, eventually, try to replace them with Lenz, but I don't know whether there is replacement for the right-angled decoder in 6417.

Apparently there are two possible replacements, they are not right angled but they are very short so they fit in the cab without any problem. If you search the forum for right angle decoder you should find the thread on the topic.

Online Yet_Another

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Re: Cotton Abbotts
« Reply #33 on: June 13, 2018, 11:20:34 pm »
A little light relief this evening. I built myself a little rolling road/wheel cleaning station, to be able to investigate a long-standing problem with one of my class 24s.



Ever since it arrived from the bay of E, there has been a problem with the lights not working at one end.

A quick whizz on the rolling road with the top off told me that the volts were all in the right place, so it had to be the contacts. This loco has four wipers at each end to transfer power to the lighting modules in each end of the body, via small solder pads.

After much twiddling with the contacts, it seemed to be a problem on the pad side, and I could see a bit of glue on the bottom edge of the body. After a bit of scraping with a small craft knife, it was clear that there had been excess glue on the pads, and with it now removed the lights all work as their maker intended.

Another positive result!  :thumbsup: :beers:

Now, I really must get on and do some more layout.
Tony

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