Has anyone had a problem with their Bachmann Shay jumping the track on curves? Mine is, usually when running in reverse, with the cylinders on the inside of the curve. This is happening on curves as tight as 18".

Also, when reversing over curves with the cylinders on the outside, it seems to 'wobble', due to something going on with the mechanism.

I'd like to try and get this sorted out, as I do like the shay.

That got it, thanks 

Hi all,

I've got a Bachmann HO scale 2-6-2 (http://shop.bachmanntrains.com/index.php?main_page=product_info&cPath=258_276_284&products_id=1864) which I'm planning to use as the basis for a conversion to an On30 tank engine.  However, I can't seem to get the body shell off the locomotive.  I've tried undoing all the screws on the bottom, as well as the two tiny screws on the side.

Despite this, the body shell still refuses to come off the chassis.  It will lift up at the rear, but seems to be attached somewhere else at the front.  I can't seem to see anywhere on the parts diagram where this may be the case, though.  Any help with this would be appreciated.

Does anyone know where I can download an exploded view diagram of the On30 2-6-6-2?  I'm mainly trying to see how similar it is in terms of construction to the 2-4-4-2.

Was that the 2-6-6-2 you linked to on that other thread?  That looked fantastic.

Ton,

No worries.  I usually use a 1K resistor.

As for the pinout, I checked it earlier this evening.  I was able to remove the circuit board from the tender and untangle the wires.  From this, I was able to map the pins on the connectors to the functions, and double-checked them with my multimeter.  The two-pin plug is the power pickup from the driving wheels.  As for the four-pin plug, the pins are as per below:

Right.  Time to break out the multimeter, then.

Hi all,

I'm in the process of converting one of the Bachmann 2-4-4-2s into a tank engine, and as part of this, I'll need to wire in a new decoder.  However, I'm unable to find a wiring diagram on the Internet.

The model has two plugs - a two pin plug on the right, and a four pin plug on the left.  Can someone please tell me which pin is for which function?

Hi,

This is a message for the admin of these forums.  I've just had a rather unsatisfactory experience with one of your parts people, and I would like to contact someone else in the parts department in order to get the matter resolved and the part I actually need delivered.  Can you please advise how I could do so?

There's still some assembly required with 3D printing.  When I was doing my 2-6-0 to 2-6-2T conversion, I found I got the best results if the cab was printed as a 'flat pack', so to speak.  I ended up printing my own kit.  There's also the challenge of designing it to fit the existing model.

Thanks, that's exactly the information I was after.

As for the bunker, I'll most likely be 3D printing a new cab.

Thank-you for the link.  That is one of the kits I'm planning to use with the locomotive.

But that still doesn't answer my original question.  Can you please tell me the length of the locomotive alone, without the tender?  I need to know if it'll fit on my turntable.

Hi all,

I'm looking at getting one of the 2-4-4-2 mallets and converting it into a tank engine.  With this in mind, can someone tell me how long the locomotive itself is without the tender attached?

Flare,

Thanks for the reply.  After googling the circuit board part number instead of the locomotive model, I found this: http://www.bachmanntrains.com/home-usa/dwg/dwgs/On30%200-4-2%20Porter_Both%20DCC-%20and%20DCC%20Sound-Equpped.pdf.  The panel on the lower right explains the pinout.

Hi all,

I've got an On30 0-4-0 Bachmann Porter with DCC (not sound) on board, which I'm doing up with a tender and sound decoder.  To this end, I'm planning to use the original circuit board for the connections to the decoder, motor, LED, etc.  This is the board in question:


The L, R, M- and M+ connections are obvious - these are motor and pickup, respectively.  What's unclear to me are the markings in the middle.  LED- and L+ indicate that these are the negative and positive connections to the front headlight.  But at the bottom of the board, there's an extra connection, and the middle ones are labelled F-, R- and L+.

Looking at the traces on the board, it seems as though the L+ is for the common +ve LED wire, and the other two are for the front and rear light inputs from the decoder - to have them drive the LED when the loco is moving in both directions.

Can someone advise if my understanding of this is correct?