@Ted S posted:
@radar493 I would really like to help you. Which brick(s) are you using: model number, watts, etc. What's the indicated voltage on the remote when you are measuring 9 volts on the rails? Also: which loco(s) are you running with this setup? About how long is your loop, what kind of track? Any grade (incline)? These things DO matter!
If you don't want to type all this out, please take some photos or a video.
With all that being said, I totally agree with Chuck. Personally I don't like running postwar trains with the TIU in variable mode.
Thanks. I have one Lionel ph1 powerhouse brick powering variable two input to TIU. I am running #2035 w tender and five light cars. Track is all Gargraves loop is 054 (5x10') no switches simple loop of track. Remote shows 8v. TIU variable output shows 7.5v. Track agrees with TIU . Train will only move with about 10 v output. So my original question was is 10 volts reasonable or should my #2035 with the above consist run on less voltage and would a Lionel small transformer run on less. I do also operate command engines so if I got another transformer for my post-war engines I would need to switch between the two. No big problem.