I thought about it a bit and decided trying to stuff a 9v motor in the locomotive was a fools errand.  However, adding one to the tender looked pretty straight forward.  I decided to poke around a bit and there is thread on LUGNET and a number of blog posts that describe various solutions to the problem.  The LUGNET thread in particular is pretty involved and uses a gutted 9v motor along with Power Functions.  A bit more than I am willing to take on right now although I do have several dead 9v motors.  From further searching it appears there are a number of solutions depending on how close you want it the train to look compared to standard instrcutions.  I am not too picky, I just want it work and not look awkward.

There was an NCLUG meeting this past Sunday afternoon and I decided to take a loop of 9v track and the Emerald Night along with some parts with me to see if I could make it run.  The key to my idea was to add a single wheel set and a 9v motor to the tender.  Doing this meant tweaking the chassis design of the tender a bit to account for the pin on the 9v motor.  The modification is pretty simple and makes use of some standard size black plates.   I have documented the changes to the tender chassis and produced instructions using Lpub.  The instructions for the tender are not complete – they just replace steps 1-5 and eliminate steps 16-18 in the official instructions.

So does it work?  Sort of.  I say sort of because the modifications to the tender work fine however the tender struggles to push the locomotive through the curves on the small loop.  I think this is due to the large train wheels on the locomotive which are linked together via Technic axels to bind up.

Unfortunately I didn’t have any parts with me that I could use to swap out the axels for simple pins which I hope will solve the problem.  I hope to try this in the next day or two as I want to run the Emerald Night at LEGOPalooza.

Instructions

9v 10194 Tender 2010-01-25 - downloaded 269 times My take on converting the 10194 to 9v by motorizing the tender.

I understand that we have some people from NCLUG going, but I’m not sure if there are any plans for us to do a group display. Apparently we’ve had a few members who thought they’d be able to attend, but have since had to cancel their plans. If you’re hoping to meet up with anyone in particular, I’d recommend checking ahead of time to verify that he/she is still coming (personally, I won’t be able to go).

No matter what, this promises to be lots of fun for everyone involved and I highly recommend going.