Virgil

Thanks for that, the motor magnets are glued, how do you get them apart?

Hi: I have a K's kit tank loco powered with a 5 pole K's motor similar to the Mk 1 and Mk 2 designs but with one magnet at the commutator end and a shaft bearing bracket at the other. The motor is running hot and drawing a lot of current and clearly has a weak magnet. I would appreciate any info on having the motor remagnetised and an idea of the likely cost involved. Thanks.

Interesting that the first outtake shot of the Bullied pacific crossing the viaduct the loco has an original tender, in the second take the loco has the cut down tender.

Thanks Dungrange, there’s enough info there to determine that it must be a V4, much appreciated!

Sorry, I can’t as I don’t want to remove the body of the loco but thanks for the info.

Does anyone know the Loksound model shown on my dcc controller as, 151 version 255 please?

Well the Bachmann 4MT tank sound project was concluded satisfactorily and worked out quite well considering the drawbacks associated with fitting a Hornby TTS steam sound decoder to a Bachnann steam loco.

For the record I have the following CV values set thus: CV12=1 CV29=38 CV13=0 CV14=3 CV241=0 CV242=0

Thanks for the reply and query. The first controller is an AGW PE143 transistor power unit, and the second is a Hammant and Morgan Duette, both working well and used for my DC locos with no problems and both giving exactly similar results when used with the Soundtraxx decoder.

Please see the youtube link to see the problem. https://www.youtube.com/watch?v=5f-wvwjUBiQ&feature=youtu.be

Great, I’ll give it a go, thanks.

I have been trying to upload a short video clip of the faulty running on DC sound with this loco but can't make the clip small enough to fit in the 10 MB limit on this forum. Can anyone assist with this please?

That's fine Nigel but Bit 5 has to be enabled at 32 weight in order for the loco to run on an extended address. This is the default setting for the Soundtraxx decoder as it is usual for most users to have several locos. Regards Doug PS I am looking at CVs 13 and 14 to see if they need tweaking.

Thanks for the thought Izzy, there are no capacitors on the motor, I also removed the two wire wound chokes on either side of the Bachmann 8 pin socket and rewired it accordingly.

Indeed 32 is the Bit weight of Bit 5 so 32+4+2=38

Hi Nigel, I looked at your link and tried the ticked suggested setting of 6 for CV29 with no joy, the resultant being no motion at all on DCC or DC though with background sound as before (air pump and generator). If bit 5 long loco address is included then a total of 38 for CV29 is indicated. This is actually the figure I had arrived at on rereading the Soundtraxx manual, I had not enabled the 28/128 Bit 1 speed step mode (Bit weight 2) totalling 38. With CV29 set to 38 the chuffs as before stop wheel movement for the normal duration of the chuff.

Well I'm not having much luck with my sound ventures recently, or is it me? {:O) Having very successfully fitted a Soundtrax Econami decoder, adaptor board and sugar cube speaker into a Samhongsa CPR K1a 4-8-4 and with it running and sounding really good on DCC, I then tried enabling DC mode running on the decoder programming. Not at all straightforward as to enable CV12 must be set to 1 (fine, no problem) then CV29 has to be changed with the number being arrived at by totalling the bit weights which are determined by turning each one of 8 separate bits in CV29 on or off. I enabled Bit 1 (speed steps) which has a Bit weight of 2, Bit 2 APS (DC mode) which has a Bit weight of 4 and Bit 5 (EAM) which allows extended addressing . Bit 5 has a weight of 32, the three weights totalled = 32+4 +2= 38. However when testing on DC power (2 different controllers tried) sound is enabled OK but wheel revolutions are paused at each chuff which itself is only briefly played. Had anyone successfully enabled DC running with sound on on of these decoders please?

A final post to clear up any hint of uncertainty as to whether Bachmann steam 3 pole motors will work satisfactorily with Hornby TTS steam decoders. I have disconnected the motor wires from the Bachmann motor and substituted (off chassis) a Mitsumi motor of the type obtainable cheaply off EBay from China. The sound obtained with the Mitsumi has none of the glitches suffered using the Bachmann motor, the chuff sequences following each other correctly and not jumping erratically. The Bachmann motor is not fault and runs well on a LAIS DCC silent decoder with no glitching. Lesson now learnt and I shall have to find a replacement motor to use the TTS decoder.

Thank you to everyone, at least I now have an understanding of the problem which seems unresolvable and should perhaps stand as a warning to those wishing to fit TTS decoders to Bachmann steam, I for one don't consider the money saved over a higher end decoder to be worth it.

It appears that the chuff sequences switch in and out of playing order when running with the Bachmann 3 pole motor, changing CV150 improved the motor speed control but not the chuff sequencing.

A big thank you to all respondents to my post, my thoughts so far. Changing CV150 was indeed very beneficial and improved the erratic running in the medium to fast speed range to a more acceptable level. The other CV's mentioned made little difference. On the sound side the chuff rate however is all over the shop, erratic and variable, and not at all acceptable. I'm wondering if it is the Bachmann 3 pole motor that is upsetting the decoder settings, as I have tested it on another loco fitted with the Hornby skewed 5 pole motor (rebuilt Merchant Navy etc) and it is more acceptable. Are there any more suggestions please?

Once more i will prevail on the good and knowledgeable members of this forum, your opinions and suggestions will be gratefully received. I am attempting to fit a Hornby TTS sound decoder to a Bachmann DCC ready BR 2-6-4 tank and am at the stage of body off and test running on rollers. I had to tweak the wheel pickups on the driving wheels due to poor and intermittent connection. Fine I thought, that's sorted but no, leaving aside the sound functions, the motor runs beautifully at up to 16 out of 28 speed steps, then as speed is increased especially between 16 and 22 runs very jerkily and erratically. Has anyone else come across this problem with a Hornby TTS decoder please?

Yes! I just came back to the forum to provide an update and saw your request, thank you. It's done and working fine and is in the post to my friend, fingers crossed that he's also happy with it as I am. I went with the Lais DCC breakout board as per WIMorrison's last post and hardwired the leads to the board. It just fitted in the boiler shell above the drive tube and gearbox though only after modification by cutting off the overlapping part of the breakout board with the 3 mounting screw holes. This allowed clearance for the can motor, all very tight. The sugar cube speaker fitted in between the boiler reinforcement bulkhead and the smokebox weight. I was surprised at the sound quality of the Soundtraxx board and especially the speaker, though minimised the rod clank sound on drifting/coasting, as it made it sound like an ill maintained WD 2-8-0! I ordered and received your suggested pins and will keep for possible future use, thanks for the suggestion. I'm now about to ask more questions as I'm doing a sound conversion on a Bachmann 2-6-4 tank which is not doing what it should do! {:O(

That's right, I also have the added complication of lack of space in the loco if an adaptor board is used as well.

And it works fine, that's good. As mentioned earlier and due to the tender base not allowing access to the inside I'm having to fit the sound decoder into the loco boiler barrel which is proving problematic when the thickness of the 8 pin socket is also taken into account. It's looking as if a hardwiring job may be necessary from decoder to motor, track and speaker, similar to the example shown in the attached photo.