Model Railway Forum

Go Back   Model Railway Forum > Model Railway Construction > Modelling Techniques - Show and Tell

Modelling Techniques - Show and Tell Your place to show and describe in detail and with photos how you produced a specific item of modelling. Rolling stock, Building, Scenery or something else related.


Reply
 
Thread Tools Display Modes
Old 16-05-2018, 04:35 PM   #1
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 3,887
Steve M is on a distinguished road
Default

Another on my occasional series of how I fitted DCC sound to another of the fleet.

In this case the subject is the LMS 10000 from Dapol. Probably not a common conversion but I think what follows demonstrates some of the challenges when fitting sound.

Now I am not one to go and spend over 100 on a bespoke decoder so I have been waiting for Hornby to release their TTS decoder for the class 40 which I believe to be reasonably close to the original loco.

Well, it arrived today from Hattons along with 21/8 pin adapter.

20180516_130953 by Steve Mumford, on Flickr



Removal of the body (two screws and it just lifts off) reveals what appears to be acres of space, a 21 pin DCC socket and a plastic mount for a speaker.

20180516_131345 by Steve Mumford, on Flickr



In an ideal world this is how the installation would have looked.

Plug the adapter into the loco and the 8 pin plug from the decoder plugs into that. On the face of it there is space on the old speaker plate for the decoder and a sugarcube speaker. But the body won’t fit over the top due to the moulding for the fan in the roof.....or that’s what I thought.

20180516_133328 by Steve Mumford, on Flickr



That’s when I realised it wasn’t just the decoder and speaker fouling the fan but the combination of adapter and 8 pin plug were also too tall. This really shows just how little space there is in locos these days.

My solution was to remove the 8 pin socket from the adapter and the 8 pin plug from the decoder. I then soldered the decoder wires directly to the adapter - effectively adding a 21 pin plug to the TTS decoder.
I also placed the decoder adjacent to the plug and trimmed the speaker housing to fit lower in the original speaker plate. I sealed and fixed everything in place with a hot glue gun before programming and final testing.

20180516_153240 by Steve Mumford, on Flickr
__________________
I'm not arguing with you, I'm explaining why you are wrong.

Last edited by Rog (RJ); 16-05-2018 at 04:57 PM.
Steve M is offline   Reply With Quote
Old 16-05-2018, 04:40 PM   #2
Steve M
Contrarian
 
Steve M's Avatar
 

Join Date: Nov 2012
Location: Rochester, Kent
Posts: 3,887
Steve M is on a distinguished road
Default

And somehow it all worked, lights as well.

https://youtu.be/uuepZ9UXIeQ
__________________
I'm not arguing with you, I'm explaining why you are wrong.
Steve M is offline   Reply With Quote
Old 16-05-2018, 04:49 PM   #3
Rog (RJ)
Super Duper Moderator ;-)
 
Rog (RJ)'s Avatar
 

Join Date: Oct 2009
Location: South Nottm, UK
Posts: 1,547
Rog (RJ) is on a distinguished road
Default

Posts merged.
__________________
If you can't say anything nice about someone, don't say anything.

Rog (RJ)
Rog (RJ) is offline   Reply With Quote
Old 16-05-2018, 04:55 PM   #4
cadman
Senior Member
 
cadman's Avatar
 

Join Date: Mar 2016
Location: Leighton Buzzard
Posts: 431
cadman is on a distinguished road
Default

Thanks for that, Steve. Very informative........HB
cadman is offline   Reply With Quote
Old 16-05-2018, 05:26 PM   #5
RogerB
Moderator
 
RogerB's Avatar
 

Join Date: Jan 2013
Location: Dorset
Posts: 4,751
RogerB is on a distinguished road
Default

Well done - sounds and looks great. R-
__________________
I'm not sure if I have loads of free time - or I've just forgotten to do something really important?
OO Gauge : Train Controller Gold via Elite : Block sensors via CTI : Servo motors for points : 9 Locomotives
RogerB is online now   Reply With Quote
Old 16-05-2018, 09:20 PM   #6
Bulleidboy
Senior Member
 
Bulleidboy's Avatar
 

Join Date: Jan 2012
Location: Basingstoke, Hants
Posts: 2,113
Bulleidboy is on a distinguished road
Default

I agree - looks and sounds good. The diesel sounds are far better than steam.Barry
__________________
I always knew Id get old. How fast it happened was a bit of a surprise though.
Bulleidboy is offline   Reply With Quote
Reply

Bookmarks



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 02:57 PM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.