I am MU'ing two identical Walthers H10-44 switchers, each outfitted with a factory-installed QSI Q1a decoder. I cannot find any information in the literature on how to make each engine sound a tiny bit different from the other so that it is obvious there are two prime movers working.

I also have some Tsunami decoders that have this available as an option and it really makes a difference in sound when a consist goes rumbling by.

Model animation—bringing models to life—adds enormously to the interest and enjoyment of any layout or individual model! This entry describes how to build what I call a “DCC Function Generator,” a combination of DCC base station and throttle for about $8 that can be used for mixed DCC animation control, DCC testing, Absolute/Emergency Stop blocking for lift-outs and bridges even for Keep-Alive equipped DCC locos, trolley multi-stop control, and all around DCC havoc!

Hello all,

I'd like to replace the fans on my P2K SD9 and GP9's but I'm having trouble knowing which ones would be appropriate. I do' not see a correct replacement from Canon and company listed. Which 36 and 48 would work for mid 70's GRIP program 9E/R's?

Also referencing the picture in the link below there is an odd flat top 36" fan on the rear of this GP9. What would be appropriate?

Instead of creating new threads for each question, I am just adding to this one to keep the discussion together.