Side-rod "clank" on steam locos was generally a sign that the loco was about due for a shopping
- it was usually an indication of worn side-rod crankpin bushings. It would normally be drowned out by the exhaust chuff if the engine was working hard, would become audible if the loco was "drifting" (moving with a low, nearly-closed throttle setting, such as going downgrade or preparing to brake for a stop). Shouldn't be present on a new or well-maintained steam loco. ![Wink ;)](https://www.bachmanntrains.com/home-usa/board/Smileys/default/wink.gif)
You didn't mention what scale you were working in, but I believe Phoenix Sound has "rod clank" available as an effect on some of their large-scale sound board files (for their 2K2 & P5 boards). I have 4 locos currently equipped with the Phoenix boards; 3 are geared logging locos (1 of my Shays, Heisler, & Climax), so the normal "clank" effect wouldn't really apply to those (or it would sound different from a rod engine, at the least).
The one conventional "rod" engine I have equipped with sound is my Bachmann "Centennial" Spectrum Mogul, which I consider to be a well-maintained, 'spiffy"
passenger loco (so no "rod clank"). ![Grin ;D](https://www.bachmanntrains.com/home-usa/board/Smileys/default/grin.gif)
![](http://1stclass.mylargescale.com/TomLapointe/Bachmann%20Mogul/Mogul_3-4_View.jpg)
![](http://1stclass.mylargescale.com/TomLapointe/Bachmann%20Mogul/Mogul_at%20_Summit_Water_Stop.jpg)
Tom
![Tongue :P](https://www.bachmanntrains.com/home-usa/board/Smileys/default/tongue.gif)
![Wink ;)](https://www.bachmanntrains.com/home-usa/board/Smileys/default/wink.gif)
You didn't mention what scale you were working in, but I believe Phoenix Sound has "rod clank" available as an effect on some of their large-scale sound board files (for their 2K2 & P5 boards). I have 4 locos currently equipped with the Phoenix boards; 3 are geared logging locos (1 of my Shays, Heisler, & Climax), so the normal "clank" effect wouldn't really apply to those (or it would sound different from a rod engine, at the least).
![Wink ;)](https://www.bachmanntrains.com/home-usa/board/Smileys/default/wink.gif)
![Cool 8)](https://www.bachmanntrains.com/home-usa/board/Smileys/default/cool.gif)
![Grin ;D](https://www.bachmanntrains.com/home-usa/board/Smileys/default/grin.gif)
![](http://1stclass.mylargescale.com/TomLapointe/Bachmann%20Mogul/Mogul_3-4_View.jpg)
![](http://1stclass.mylargescale.com/TomLapointe/Bachmann%20Mogul/Mogul_at%20_Summit_Water_Stop.jpg)
![Wink ;)](https://www.bachmanntrains.com/home-usa/board/Smileys/default/wink.gif)