How do I get GP-35 w/DCC board & Non-DCC GP-38-2 same speed on DC

Started by on30gn15, December 06, 2011, 04:56:16 PM

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on30gn15

Was kind of limited to buying what I wanted cross-indexed with what was there and on sale.

Just came home with item #60708 Western Maryland GP-35, DCC On Board.

Want to run it m.u. with Chessie System GP-38-2 item #61705 which was purchased a couple years ago and has no DCC board.

They have really different starting currents and that has to change. They are going to run DC on home RR.
And also run on modular RR layout for new club: layout can be switched from DC or DCC.

1.) is there a DCC board to get to retrofit to the GP-38-2 so it will draw same current as DCC GP-35?
2.) can the DCC board be removed from the GP-35?

My health is a mess and I just don't want to screw with the complexities of DCC.

I need some help from someone who knows about those things because I sure don't.
When all esle fials, go run trains
Screw the Rivets, I'm building for Atmosphere!
later, Forrest

Doneldon

On30-

Please post only once. Multiple posts don't yield more ot better
responses. They just gum up the works and make it so you can't
remember where you got your answer.
                                                              -- D
                                       

on30gn15

When all esle fials, go run trains
Screw the Rivets, I'm building for Atmosphere!
later, Forrest

Jim Banner

Open up the locomotive.

Unplug the decoder.

Install a dummy plug.

Close up the locomotive.

This is not possible in all cases.  It works only with plug in decoders.  Sometimes you will have to physically remove the decoder as well as unplug it.  Once the decoder is out and the dummy plug is in, you have a locomotive wired for dc, just like your original.

Jim
Growing older is mandatory but growing up is optional.

on30gn15

This looks like one of the "not possible in all cases" cases.

Top is GP-35 with DCC
Bottom is GP-38-2 without.

Appears entire circuit board is decoder.

Guess the thing to do is find out if there is either a DCC board for the GP-38-2 or a plain board for the GP-35.

If there is, I can do the swap and solder.



Okay, went and looked at parts diagrams here http://www.bachmanntrains.com/home-usa/references_2010.php

Diagram for DCC equipped GP-35
http://www.bachmanntrains.com/home-usa/dwg/dwgs/60701.pdf
Shows Part 6071 "PCB ASSEMBLY"

Diagram for a Non-DCC GP-35
http://www.bachmanntrains.com/home-usa/dwg/dwgs/11516.pdf
Part 6071 "PCB ASSEMBLY" same thing.
So I guess swapping the board in that one is not the answer.

There are both DCC and non-DCC GP-38-2 loco diagrams.

Diagram for non-DCC GP-38-2
http://www.bachmanntrains.com/home-usa/dwg/dwgs/H617X_IS001.pdf
Shows circuit board as part "TRAIN#PCB13"

Diagram for DCC equipped GP-38-2 is here http://www.bachmanntrains.com/home-usa/dwg/dwgs/H611X_IS001.pdf
Shows part 6031 "DIGITAL PCB"

Guess the thing to do then is see about getting a part 6031 "DIGITAL PCB" for the GP-38-2.
Which will make both locos drawing current through the DCC board.
And both of them usable when club layout is set up for DCC.
When all esle fials, go run trains
Screw the Rivets, I'm building for Atmosphere!
later, Forrest

Jim Banner

Talk to the good people as Parts & Service (see link at the top of this page.)  Best bet is to phone them during business hours.

Jim
Growing older is mandatory but growing up is optional.

on30gn15

Okay.
Print catalog here has 800-356-3910 in Philadelphia which puts us in different time zones; will have to pay attention to that.

Been trying to figure this out in between other stuff going on.
Not the best multi-tasker.
When all esle fials, go run trains
Screw the Rivets, I'm building for Atmosphere!
later, Forrest