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Discussion Starter · #1 ·
Hello again, yes you've guessed it i'm in trouble again,
I purchsed a lovely Terrier today and have fitted it with a Hornby chip as per the instructions supplied in the PECO manuel for installing decoders. No probles=ms there the chip went in easy and it's running ok. The problem is the noise, when it's idle no noise, but running even at low speed it makes a racket, the more speed applied the greater the volome. Is this normal with this type of loco or have I done something wrong? I took the capacitor out when I fitted the chip, would reinstalling it help?
Thanks for your advice,
Mike
 

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QUOTE (Mike Button @ 6 Sep 2007, 21:48) <{POST_SNAPBACK}>The problem is the noise, when it's idle no noise, but running even at low speed it makes a racket, the more speed applied the greater the volome. Is this normal with this type of loco or have I done something wrong? I took the capacitor out when I fitted the chip, would reinstalling it help?
Thanks for your advice,
Mike
Is it the motor or a mechanical noise? something might have been displaced when you had it apart.
If it's the motor it could be the frequency setting on the chip making the motor noisy. I'd suggest contacting Hornby direct and ask if they have tried their chip on this motor. If you have access to a programmer and you know the Hornby CV for motor frequency you can try adjusting that to a higher frequency. But ask Hornby first as they are very helpful usually.
 

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No need to replace the capacitor. The 'type 7' motor runs silently and very controllably with a high frequency back-EMF decoder from the likes of Lenz or Zimo.
 

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I've just done a batch of six Terriers with Lenz gold mini's. The client has a Terrier fetish ! The capacitors were all removed and each and everyone runs beautifully, and surprisingly quiet, I just lightly lubricated the gear with a little La Belle grease. It's probably worth while checking mechanically all is well. Perhaps
run the chassis without the decoder and see if it makes the noise better. Reinstalling the capacitors won't help you Mike. If you prove the chassis is quiet without a decoder, then look at the decoder and consider a change to improve performance. The wiring on some of my Terriers was a bit primitive to say the least and I replaced quite a lot of it.
 

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Discussion Starter · #6 ·
Thanks for the help everyone, the noice is motor not mechanical, the loco runs very smoothly no complaints there, it just whines whilst running, the greater the speed the higher the whine. I took the body off and detached the decoder from the motor and this cured the whine, toruble is there's very little room in the body for the decoder to go so it has to fit snug against the motor. As soon as I put the body back on and screwed it together again the whine was back. Any further suggestions?
I will contact Hornby and see what they suggest, sorry not sure what a CV code is or how to change it, don't forget I'm very much DCC for beginners!
Thanks again Mike
 

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Mike I remember your Hornby Digital user aren't you ?. I drilled a hole in the cab of the loco and put the decoder in the coal space, I stress this was a Lenz mini gold, I simply don't know how they work with your system. All I can say is try another decoder. Given the age of the Terrier it's quite a cute little loco and they do run very nicely. So it most likely it's the decoder combination with this particular loco.
 

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QUOTE toruble is there's very little room in the body for the decoder to go so it has to fit snug against the motor. As soon as I put the body back on and screwed it together again the whine was back

is the decoder pressing hard enough to cause part of the motor armature to rub against a casing?

will there be high frequency motor vibes being transmitted through the decoder if it is in hard contact with the motor?
 

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Hi

I have got one of these Terrier too but I have not got around to putting in decoder. Any chance of a photo and description of where you mounted the decoder.
 

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Discussion Starter · #10 ·
Hi sorry I've not replied, PC troubles. I don't think the decoder is causing the motor to press against the casing, but the idea of moving the decoder to the coal bunker is appealing. Yes I'm using Hornby decoders.
I've tried putting pictures on here before but without success, I followed the instructions in the Peco book, I think it's called "installing locomotive decoders" but I haven't got it to hand to check.
Basically you detach the three wires from the picks ups on the axles, (red, yellow and black wires) from each side of the motor, group the three together and attach the black decoder wire to one set and the red decoder wire to the other. The orange and grey go to the motor terminals as usual.
The instructions place the decoder on the side of the motor, (use double sided tape). I've never placed a decoder so close to the motor before, and as you will appreciate I'm not happy with the result.
I'll look at moving it to the bunker at the weekend.
Thanks again for your help.
Mike
 

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QUOTE I have got one of these Terrier too but I have not got around to putting in decoder. Any chance of a photo and description of where you mounted the decoder

I have also just purchased a Terrier and unearthed the above from 2007 - but no sign of a reply. Any further hints welcome. It looks as if it has to be a Lenz Gold mini and I have no experience of this make, common though it may be.
 

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QUOTE (Makemineadouble @ 7 Sep 2007, 22:24) <{POST_SNAPBACK}>Mike I remember your Hornby Digital user aren't you ?. I drilled a hole in the cab of the loco and put the decoder in the coal space, I stress this was a Lenz mini gold, I simply don't know how they work with your system. All I can say is try another decoder. Given the age of the Terrier it's quite a cute little loco and they do run very nicely. So it most likely it's the decoder combination with this particular loco.

I chipped the terrier with a Hornby R8215 decoder. I also put it in the bunker, but I routed the wires through the holesthat hold the bunker in place so the wires run below the cab and are invisible unless you turn the loco upside down. I haven't had it running for a while, but I can't recall it being unduly noisy.
 

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Many thanks to all. Glad I asked!
I have bookmarked Bromsgrove Models too - what a useful site.
I now know my first job after Xmas.
 
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