Model Railroad Sound Cams

We are the number one manufacturer of Sound Cams for Model Railroad sound in the world.  Our cams work perfectly with through the rail style sound (GME, PFM, PBL) and with DCC and onboard sound systems.  Many manufacturers, such as Precision Scale Co., Mountain Model Imports, Berlyn Locomotive Works and others, install our cams at the factory. 


We make several styles of cams for almost any application.  The really nice feature of all of our cams is you do not have to remove a wheel from the axle to install it.  All of our cams are designed to simply slip over the axle.  They are glued in place using a 5 minute style epoxy.  When the cam needs to be conductive to the axle, you use a conductive paint like the ones used to repair a rear window defogger grid on an automobile.  It is available most auto parts stores. 


We have several styles of cams.  The ones most often used are the slotted and the split type.  (photo of cams)  (photo of cam installed on axle)


The cams we make and keep in stock are:


*** 4 point cams for a standard rod locomotive

*** 6, 8 and 12 point cams for use with geared locomotives.  Shay, Climax and Heisler

*** 6 point for a 3 cylinder loco like the UP 9000

*** 8 point for an articulated loco.  It gives you the offbeat " chuff, chuff" .

*** 2 and 3 point cams for use on the tender axle when needed.

All cams are available in many axle sizes.  2.0MM, 2.4MM, 2.5MM, 3.0MM, 3.5MM, 3.8MM, 4.0MM, 4.5MM, 5.0MM, 5.5MM, 5.8MM, 6.0MM, 8.0MM, 1/16", 3/32", 1/8', 3/16", 5/32" and 1/4".

If you happen to need a special size, special width, special diameter or special number of points on the cam, let us know and we will make it for you.  Our cams are normally in 4 different diameters.  .250", .310", .375" and .440".  If you have a question about any of them, please email or give us a call.


(back to home page)