G-Scale 4-6-0 chuffing sound

[Furrbie]

Is there anyway to make the 4-6-0 locomotive have four chugs per 1 wheel revolution instead of just the two chugs per 1 wheel revolution?  Thank You.

[Matthew (OV)]

There is. 

Underneath the locomotive, you'll see there are two fingers that contact a rotating drum with two metal bars on it, 180 degrees apart.  These provide your two chuffs per wheel revolution. 

To obtain the four chuffs you want, you need to add two more metal bars, so there's one every 90 degrees.

Be certain when you do this that they're not capable of touching the sides of the frame or the axle, as you'll short everything out!  All you have to do is make it wide enough to hit both of the contact fingers as it goes by.... they don't have to wrap around the sides like the factory ones do.

Matthew (OV)