Hopefully someone like Rob will answer your question on this. I do not think it would be advisable to permanently engage the whistle control. I’m pretty sure whenever the whistle control is activated the AC voltage is increased to compensate for the AC motor in the tender. On newer engines the engine always speeds up cause there is no other motor using up the increased AC voltage. If I’m way off track 😂with this I apologize.
Rod,
You're right on the mark.
The whistle button does indeed switch in a boost to compensate for the whistle motor or diesel electromechanical horn kicking in. Since Dave doesn't have a whistle motor or horn his engine sucks up that extra boost.
Dave: Most all of what we run, especially the traditionally-sized stuff, is perceived to be too fast for today's finicky tastes, i.e not like real trains, especially when well-tuned and lubricated. In fact they're usually so fast that a high throttle position will throw them off the track.
Why do you need more speed?
Mike