I built the Emerald Night a while ago and it has sat in the box down in my basement ever since. It is a beautiful train although it really does need additional passenger cars. A month ago when I had the e-mail dialog with my Dad about the Emerald Night, he asked me how it be converted to use a 9v motor (since he has several of them). I know the Emerald Night comes with instructions on how to add a Power Function motor but (a) neither of us have the right motor and (b) neither of us feel like buying more motors when we already have 9v motors on hand.
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.
|9v 10194 Tender (1825 downloads)|