Comments on: Fitting a Decoder to a Tomytec Chassis https://blog.model-train-help.com/2024/05/fitting-a-decoder-to-a-tomytec-chassis.html?utm_source=rss&utm_medium=rss&utm_campaign=fitting-a-decoder-to-a-tomytec-chassis Model railroads and model trains Fri, 14 Jun 2024 18:54:19 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Geoff https://blog.model-train-help.com/2024/05/fitting-a-decoder-to-a-tomytec-chassis.html#comment-69128 Fri, 14 Jun 2024 18:54:19 +0000 http://blog.model-train-help.com/?p=6852#comment-69128 In reply to Nigel.

Unfortunately, it’s an enclosed motor, no visible electronics! But I like your logic. Thanks.

]]> By: Nigel https://blog.model-train-help.com/2024/05/fitting-a-decoder-to-a-tomytec-chassis.html#comment-69078 Thu, 13 Jun 2024 06:46:37 +0000 http://blog.model-train-help.com/?p=6852#comment-69078 I’m not acquainted with the Tomytec chassis but I had a similar issue with Hornby chassis when I fitted decoders myself – erratic speed and uncontrollable. It turned out to be the suppression capacitors and after I removed them, everything worked fine.

On the basis that both your chassis and decoders work fine when not connected to each other, logic suggests that it has to be another component. On the basis that, in its simplest form, a DCC decoder connects directly to the track through the red and black wires and directly to the motor through the orange and grey wires, anything else that enters the signal path, so to speak, may well be the issue so I’d definitely suggest having a poke around to see if there are any hidden components screwing things up.

I hope this helps and good luck!

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