Poor running Bachmann class 40 sound fitted revisited.

[hucknall byron]

A few people have suggested that fitting a stay live may be the answer to this so has anybody done this? If so which one and is it a big job. I am fast running out of patience with this otherwise good model which Bachmann to their credit have had  a go at for free despite it being out of warranty.

[hucknall byron]

Bit of an update on this. After being put away for about 2 years i thought i would give it another go. Lo and behold after about 2 stuttering circuits it ground to a halt. On close inspection under a magnifying glass i discovered that the tiny wire sanding pipes? were near enough touching the wheels so i bent them out a bit and hey presto smooth running. Great the sound initially went completely but returned intermittently when several different buttons on the powercab were pressed. At a loss now what to do next, any suggestions? I have written to Bachmann in the meantime.

[nimbamoss]

If memory serves me, this thread had info about poor performance on the 40's amongst others

 

[mezzoman253]

Hi, You may want to look at this thread for some ideas.  https://www.rmweb.co.uk/community/index.php?/topic/122118-bachman-mauritania-sound-failure/

 

 

HTH Rob

[Albie the plumber]

The Class 40 is not one of the best runners .

I have one and it oft behaved like yours .

I did however get rid of the circuit board when fitting a larger speaker and doing away with those silly copper contact pick ups that rub against the PCB 

I then ran wires from the shortened pick ups to the ESU adapter board

Works better for me .

Alternatively,  you could fit one of those low priced stay alives that Roads and Rails advertise which can be joined to a V4 or V5 , but not in the same way as the ESU power pack .

[IMG]

I’ve put an ESU small Powerpack in mine as it was a v4 chip and and changed the cv’s to set the backup time to maximum a couple of years back.  It’s fine if the wheels and track are clean too.

An extra £40 to solve, but better that than the loco sitting in a box for what is otherwise a nice model in my view.  

Also check for fluff around the power axles where they join the wheels. I recall that added to the problem. 

Best of luck