[Richard Johnson]

QUOTE (SRman @ 2 Dec 2008, 16:29) <{POST_SNAPBACK}>Definitely check for, and remove, any capacitors.

Also, try changing the settings

CV5 - 50
CV6 - 28

These will lower the top speed and give a shallower acceleration curve at the lower end.

*** Careful: Not all decoders are the same. ESU has CV5/6 with a range 0 to 64, Most other brands are 0~255.

With 28 speed steps, your controller is simply choosing to jump 4 steps at a time - the decoder is actually always at 128... Adding higher settings to CV3/4 then smooths the jumps, so the ONLY real difference is the distance the knob has to be turned (128 requres more steps, so needs more rotation to full.

Richard

 

[Richard Johnson]

QUOTE (Thunder @ 4 Dec 2008, 01:43) <{POST_SNAPBACK}>Going on from this thread a little, I recently purchased the bachman G2 with decoder already instaled, and after going through the running in process, i find that the loco jerks at low speeds, it will not run smoothly, i removed the boiler and applied a few drops of oil in the required places, with no results, but i did notice that there are 2 capacitors fitted? have these been fitted by law? are these causing the jerky movements at slow speed? should i remove them? any comments gratfully recieved.

***There are no "Legal" implications from any owner removing the capacitors when installing a decoder. The capacitors are part of a suppression circuit is as Zmil mentioned, but it is only valid under DC running. (as soon as a decoder is added to a DC loco the loco electrical circuit is changed so the overall suppression pattern / capacitors effectiveness changes anyway)

Capacitors can be removed easily with cutters or soldering Iron.

Decoder circuitry has more effect on suppression than was originally in place via the capacitors so they are no longer valid and it will NOT create a problem for interference by removing them, however running quality will be improved.

regards

Richard