HELP- Old Williams Brass Challenger

First off, some reverse boards require a longer direction change power interrupt to reliably change directions.  I've see a few boards that don't respond to direction changes reliably with electronic transformers, many times a longer interruption will mitigate the problem.

There is no true "Legacy Upgrade", but you can have TMCC with cruise control.

You did forget one other option, simply replace the existing conventional reverse board with a different board.   

Or spend less than $50 on a Dallee board that will work all the time. If you want to sell...put it on the OGR forum as I still have not found one!!! Good luck! 

Thanks Dave and John. appreciate the feedback.

Great gearing in those locos; an ERR Cruise Commander - even if you skip sound - will turn that loco into a real TMCC/Legacy-compatible command control sweetheart. Easy upgrade. Really.

All the guys gave you good advice.  First I would follow what John stated on the time to reverse.  If you are using the Z4K handle to go on and off, that may be a roll of the dice.  The direction button will make sure the board sees zero voltage.  That is an old board anyway.  Dave hit on what I would do.  The Dallee #400 board in my opinion is the greatest.  Not much money and very easy to install.  Cut the wires off the DCRU and hook them to the Dallee and you are rocking.

Hello L.I.TRAIN

I put in a new Dallee # 400 e-unit in my 1984 era. early Williams brass Hudson about 2 months ago and it never missed a beat !! (worked every time on my Z4000).  It is very small in size wise and you can even put it in the challenger's boiler.  Very compact in size, 4 amp model is good size for O gauge train. 

Jesus spoken in "red words" "for I am with you, and no one will attack you to hurt you; for I have many people in this city." Acts 18:10 MKJV

Tiffany

Great product.