Fiunny, as a "city boy" most of my life I always thought it looked neat in western shows to see horses acting up,bucking, etc with a rider mounted up but not so in real life ... my first build seemed much louder than my new build but this new motors tone or the muffler must scare horses ... I passed 4 horses in the bike lane as they walked over 10 yards to my left on a wooded path. One went absolutely insane ! I was actually terrified for myself and for the rider. Bucking, side walking, spinning around, it was NOT like any movie I can say. Worse, I veered right out of the bike lane out of reflex smack into the middle of the road with no idea of traffic and no rememberence of doing the reflex action. Do yourself and horse people a favor and cut the engine as you go by !! Geez ! call me a tenderfoot and lock the corral !