ogaugeguy: I have the Birkshire #765 NPR and no where in the operators manual does it say anything about the chuff rate only the volume. I assume it is set at the factory. Word of caution on the smoke unit>It is very easy to overfill so be careful. BTW my fan for the smoke was broken when I receive the engine so I had to send it back to Lionel Service. Everything OK now. LarryWhat is the chuff rate of the Lionel FlyerChief Polar Express locomotive? Can that chuff rate be either mechanically or electronically altered to increase it?
AmFlyer: I also have a new FlyerChief 4-8-4 ordered. I'm getting the "Milwaukee Road" Version. I'm getting tired of looking at all my "Silver Nosed" Lionel Steamers. Wanted a pure black one this time. What version are you getting?? They sure look nice in their catalog.I have a new FlyerChief 4-8-4 Northern on order but do not have a Berkshire. Watching the videos it appears to be 2 chuffs. If you are considering a FlyerChief purchase, or have one I recommend you check out Carl Tuveson's website tuveson.com. He has converted a Berkshire to TMCC and posted videos along with pictures and instructions to do the conversion. It looks like a really interesting alternative if you have a Legacy control system.