Identify decoder

Post all your DCC only problems, solutions and discoverys here.
triuph1050
Posts: 84
Joined: Wed Jul 25, 2018 12:08 pm

Identify decoder

Postby triuph1050 » Fri Nov 16, 2018 6:54 pm

Hi people
got my self an old Bachmann class 66 fitted with an unknown decoder, was hoping one of you might be able to tell whose make it is. Done a search with the numbers but got no joy.
Cheers Peter
Image20181116_182954_HDR by peter, on Flickr
Image20181116_180759_HDR by peter, on Flickr

triuph1050
Posts: 84
Joined: Wed Jul 25, 2018 12:08 pm

Re: Identify decoder

Postby triuph1050 » Fri Nov 16, 2018 7:40 pm

Hi Dave
Have the Hornby Elite so will that do? if so what do I need to do to read the chip. Been able to do a reset on cv 8 and given it a new ID but that seems to be a common reset value
Cheers Peter

User avatar
Roger (RJ)
Posts: 1447
Joined: Tue May 29, 2007 2:59 pm
Location: Nottingham, UK.

Re: Identify decoder

Postby Roger (RJ) » Fri Nov 16, 2018 8:02 pm

You need to read CV7 & CV8. Then look up those values on the NMRA site.

CV8 gives the manufacturer number and CV7 contains a version number, if any.

List of manufacturers https://www.nmra.org/sites/default/file ... -9.2.2.pdf

eg Hornby is 48 and Bachnann is 101
Last edited by Roger (RJ) on Fri Nov 16, 2018 8:07 pm, edited 2 times in total.

triuph1050
Posts: 84
Joined: Wed Jul 25, 2018 12:08 pm

Re: Identify decoder

Postby triuph1050 » Fri Nov 16, 2018 8:14 pm

Thanks Dave :D

triuph1050
Posts: 84
Joined: Wed Jul 25, 2018 12:08 pm

Re: Identify decoder

Postby triuph1050 » Fri Nov 16, 2018 8:37 pm

Turns out to be Zimo MX 600 very basic but Im hoping to tweek it

RFS
Posts: 882
Joined: Tue Jan 12, 2010 3:09 pm
Location: Derbyshire, UK

Re: Identify decoder

Postby RFS » Fri Nov 16, 2018 10:21 pm

triuph1050 wrote:Turns out to be Zimo MX 600 very basic but Im hoping to tweek it


Actually the Zimo MX600 decoder is quite a sophisticated one, not basic at all.
Robert Smith

triuph1050
Posts: 84
Joined: Wed Jul 25, 2018 12:08 pm

Re: Identify decoder

Postby triuph1050 » Fri Nov 16, 2018 11:48 pm

RFS wrote:
triuph1050 wrote:Turns out to be Zimo MX 600 very basic but Im hoping to tweek it


Actually the Zimo MX600 decoder is quite a sophisticated one, not basic at all.


Yes your right I have done it a disservice. Been checking it out. I'm trying out cv values as its slow of the mark then runs to quick and when you decelerate it comes to a halt almost straight away. As it is the default settings don't suit the Bachmann class 66 at all. At the moment have CV 3 and 4 both at 15 which has controlled it somewhat
cheers Peter

Bigmet
Posts: 7411
Joined: Tue Aug 14, 2007 2:19 pm

Re: Identify decoder

Postby Bigmet » Sat Nov 17, 2018 5:02 pm

Push CV3 and CV4 up further yet. (I rarely use values smaller than 60.) Then you have to exercise proper control and discover what speed limits might apply on the layout, in particular because it take a long time slowing down from speed.

User avatar
SRman
Posts: 1046
Joined: Fri Oct 03, 2008 2:26 am

Re: Identify decoder

Postby SRman » Sat Nov 17, 2018 11:35 pm

Bigmet wrote:Push CV3 and CV4 up further yet. (I rarely use values smaller than 60.) Then you have to exercise proper control and discover what speed limits might apply on the layout, in particular because it take a long time slowing down from speed.


I tend to use initial values of 25 and 18, respectively, for CVs 3 and 4, then tweak further depending on the motor and decoder characteristics. Having the higher values serves two purposes for me: one is to smooth the acceleration and deceleration (which is what we want for the problem in the OP), and the second is it more closely matches the behaviour of the sound-fitted locos I have got used to driving.

Whatever the higher values used, it does take a little getting used to at first, but soon you expect all your locos or units to behave this way and it feels more like driving the trains in a realistic manner. The challenge is getting them t stop in the right places ... I have overshot my platforms and had a few SPADs on occasions! :D

Bramshot
Posts: 205
Joined: Thu Jul 07, 2016 6:55 pm

Re: Identify decoder

Postby Bramshot » Sun Nov 18, 2018 11:14 am

Also, with Zimo decoders, I find it beneficial to not use CV5 and 6 in the ‘normal’ way, but to set 5 to max (=0), 6 to mid range (=128) and then use CV 57 to set the top speed. In this way you get the full 256 internal speed steps to cover the speed range of the loco, by setting the max voltage supplied to the motor, as opposed to ‘chopping off’ the top end steps with CV5. Gives more resolution noticeable at low speed. Also check the values in CVs 121, 122 & 123 as these set an exponential acceleration and deceleration which can be used to give extreme low acceleration at low speeds. They may have been set up to give the non-linear accelerations you describe.

triuph1050
Posts: 84
Joined: Wed Jul 25, 2018 12:08 pm

Re: Identify decoder

Postby triuph1050 » Sun Nov 18, 2018 1:47 pm

Thanks Bramshot, will do a reset and give it a try
Peter

triuph1050
Posts: 84
Joined: Wed Jul 25, 2018 12:08 pm

Re: Identify decoder

Postby triuph1050 » Thu Nov 29, 2018 6:01 pm

Well very pleased to say that upgrading to a ESU 8 pin Lok sound decoder has tamed the 66 runs so much better on the default settings, also as this is an early model with no 'openings' in the roof grill and no speaker body shape in the chassis (so I had to cut down the speaker box otherwise it was to tall and all held with blue tack) I was wondering how it would sound just closing the body back up and the answer is , very well, so I won't follow up with my plan of making some holes in the body. Yes expensive as the decoder cost more than I paid for the mint e-bay buy 66 but now a well running/sounding class 66 so very happy :)
Last edited by triuph1050 on Fri Nov 30, 2018 8:19 pm, edited 1 time in total.

User avatar
Mountain
Posts: 4201
Joined: Mon Oct 24, 2016 3:43 pm
Location: Somewhere in Wales, UK.

Re: Identify decoder

Postby Mountain » Thu Nov 29, 2018 8:40 pm

Well done.

User avatar
RAF96
Posts: 664
Joined: Tue Feb 19, 2008 1:39 pm
Location: Dereham, Norfolk, UK

Re: Identify decoder

Postby RAF96 » Fri Nov 30, 2018 7:17 pm

I propped the cab doors open to let the noise out of one of my 56s that didn’t have open exhaust ports, ventilated fan screens, etc.
RAF Halton Brat - 96th Entry
http://www.halton96th.org.uk/robs_rails.html
β-tester


Return to “DCC Forum”

Who is online

Users browsing this forum: No registered users and 4 guests