There are three PCB's for the HO GP40.  What are the reasons for this?

PCB (HO GP40)
board #H601x-PCB01
Model: 6031-PCB01 REV-B

PCB (Old Model) (HO GP40)
Model: 63521-PCB01 REV-A

PCB03 (HO GP30/GP35/GP38-2/GP40/GP50/ Universal)
Model: H601X-PCB03

Thanks, Pat

P.S.  I tried to upload pictures but it said the upload area was full.

What is the reason for the GP40 motors that have resisters and those that do not. 

Motor w/Resistors (HO GP40)
Model: H63525

Motor w/Resistors (HO GP40)
Model: H63525

Thanks Pat

P.S.  I tried to load an image but it said the upload area was full.

I want to record and playback various train sounds: whistles, crossings, conductor, etc.  On my control board I want to have different buttons to activate these sounds so if the train is in the station the conductor would talk.  Train at a crossing then you would hear bells.

I thought I found a good solution using a battery sound recorder device then mounting these near the point I want the playback.  Problem was that these devices are not loud enough and get drowned out by train.

Does anyone have advice?  I don't think a CD or USB player would work because I want short clips controlled by buttons and mounted in different places.

Thanks

I've bought three Bachmann HO Locamotives, GP-40.  They all run at different speeds and some a lot different.  Is this normal?  I would think the same manufacture and model would run pretty close to each other.

Thanks, Pat

I need to replace the motor in my GP40 locamotive.  I was on Micro-Mark's site to by a truck tuner when I saw their motore.  Can this go in my GP40?

Also Mico-Mark gives details demensions and Bachmann doesn't for lots of their products.  I wish they did.

Thanks, Pat

I want to replace the plastic wheels on some of my cars with metal ones.  I bought 33" wheels from Bachmann and the are too long even for Bachmann's cars.  The axles are longer and more pointed.  What do these fit?  Can I modify them to fit my cars?

Thanks, Pat

I need to order more couplers.  I want the standard ones that come on 40 ' stock with the springs.

What part # do I order?

I"m looking for a dummy engine to match the GP40 BNSF one I have but can't seem to find one.  I've searched the internet and can find other dummy engines but not this one.  Any ideas?  Could I get the BNSF shell and mount it on a matching length rolling stock car?

My wife got me a Bachmann starter set for Christmas and I'm hooked.  Great hobby.

Pat