Large Scale Central

CV settings on Airwire G2 running a BBT drive Connie

Electronics Power and Sound
#1

To all,

I have been experimenting with the CV’s on an Airwire G2 on a BBT drive for my Bachmann Connie. Mainly working with CV56 (Motor Bump Value) and CV57 (Motor Bump Rate) and CV5 and CV6. The Bump Value and the Bump Rate have really turned an already smooth drive, into the smoothest running engine I have ever owned! Couple these settings with CV5 and CV6 (Throttle position and voltage), the engine can do very, very slow and precise movements when switching. Those of you that run Airwire G2’s might want to give it a try.:slight_smile:

#2

I hear you Gary. I started using those CVs myself this summer… huge difference :slight_smile:

#3

Haven’t tried that on my BBT 2-8-0 yet because it’s silky smooth without it, but I may have to give it a go. It definitely made a difference on my re-motored B’mann 2-6-0. Took an average performer and turned it into an absolute dream to run.

Later,

K

#4
Kevin Strong said:
Haven't tried that on my BBT 2-8-0 yet because it's silky smooth without it, but I may have to give it a go. It definitely made a difference on my re-motored B'mann 2-6-0. Took an average performer and turned it into an absolute dream to run.

Later,

K


Kevin,

These are the settings I finished with. Yes, the BBT drive is very smooth, but these were the icing on the cake. I’m still playing with it. I set the CV’s on a short test track. Now I’ve got to test the Connie on a layout situation.

CV5=0, CV6=40, CV56=50 and CV57=1. Next test is to set the momentum CV3 and CV4. I would be interested to hear what you end up with for these settings (similar locomotives).

#5

I use 15 for 3 and 4 on the dismals…very nice

#6
larry mosher said:
I use 15 for 3 and 4 on the dismals....very nice
Larry,

Thanks for the tip on the momentum CV’s. I was told by someone at one time, to NOT set 3 and 4 at a value higher than 4. I was told the engine might get away from you (seems like lack of control). Did you get that with your setting? Which locomotive? Just curious. Trying to learn this system. Thanks again.:slight_smile:

#7

I use momentum values in the 30s and 40s–typically higher for deceleration as I want the train to slow down a bit slower than it speeds up. This works well with the Phoenix sound systems when you’ve got the Johnson Bar effect dialed in. (You need the Phoenix programming software to do that.) When you’ve got that much momentum dialed in, you do need the “stop NOW!!!” button for emergencies, as just turning the knob down to zero don’t cut it.

Later,

K

#8

with momentum being used the emergency stop button is a must. I know a few guys who love smashing up trains cause they cant stop them quick enough.

#9

Thanks guys for the tips!:slight_smile:

#10

Interesting on these CVs

Are you also running in 128 speed steps?

#11
Matt said:
Interesting on these CVs

Are you also running in 128 speed steps?


Matt,

I’m not sure which “you” :slight_smile: you are refering to, but I run 28 speed steps.

#12

Gary, I just re-programmed my G2 in my BBT 2-8-0 with the same settings as yours, along with CV3 = 35, and CV4 = 50. Goodness me, is that one smooth, easy to control locomotive! That, combined with the Phoenix sound with the Johnson bar effect dialed in–it’s damned near prototypical! The only thing that would make it better (Airwire, are you listening?) would be to do what Tsunami and QSI are doing with using one of the function keys as a brake. Turn the throttle to zero, and the loco just coasts gradually. Apply the brake, and it starts to slow down. The longer you hold the brake, the faster it decelerates. (At least, that’s how QSI’s works. My understanding is that the Tsunami works the same, but I’ve not tried it.) That’s a whole different ballgame when it comes to switching…

Later,

K