Is Tech Ii Train Power 027 OK for RailKing Bumper Trolley?

It will run the trolley very nicely. You get 270° of throttle range with those(only 90° with a CW) for fine tuning.

 

Thanks Rob, I don't know what that means, but it sure sounds good.

Your Tech ll transformer has more movement of the throttle from off to maximum than the CW-80 transformers do. From 0 to 100 on the Tech ll represents about 300 degrees of rotation out of a 360 degree circle, which is most of the circle. This makes fine voltage adjustment possible. The CW-80 transformers move only 90 degrees, or a quarter of a circle, from off to maximum, making finer adjustments very difficult.

 

The Tech ll is rated at about 18 watts, and can not be expected to run big locomotives and long trains.

 

Larry

Thanks Larry, I think I understand now. I am  alittle disapointed that the Tech II can't run large trains and i guess i should keep my eyes open for another CW80 for my other train. I bought it piece by piece on eBay so it did not come with track or a transformer.

 

Just took a look at my Tech II O27 and the specs are:

 

Input: 120VAC Outputs: 0-17VAC, 18VAC Total Output: 40VA (About 40 watts)

 

Since the original 2-piece Lionel 40W transformer that came with it died, I've used the Tech II to run my Christmas 4-4-2 starter set, plus 3 add on cars, for years.

 

It should have no problems at all with just a trolley.

 

 

Just make sure your Tech ll is an ac transformer. Mrc had many variations of the Tech ll and many were DC output on the throttle- which will not bode well for your trolley.

It wont affect the trolley at all.

The Tech ll in the picture is an AC transformer. It has a whistle control, which the DC versions don't have.

 

Larry

Also, in his pic, it says "Train Power 027" right under Tech II.

Thanks, it does say AC on the box and I admit it was confusing because I have a couple of other MRC Tech power supplies that I used to use on my N-Scale layout before I went digital and they all look similar.

 

What was real confusing was that I looked this up on the internet to make sure and I don't remember what site it was listed on, but they had it listed for O,HO,N and Z scale. LOL. Well I knew that was wrong and that's why I wanted to run it by here first.

Unless someone switches it, the MRC Tech II AC transformers have red knobs, the DC powerpacks have black knobs.

 

And the MTH Bump-n-Go trolley has it's own internal rectifer to convert the AC to DC for it's motor. It doesn't matter if you use AC or DC, within the voltage range limits, the trolley will work. We ran one using a 7VDC 'wall wart' on the South Hills Shopping Center display layout for almost 5 years.

 

 

I run a Tech III and it is DC (chopped DC, but still, DC).  It runs all 'Streets vehciles and many trolley just fine. 

Well that’s really interesting Len. I have all my DC power supplies packed away because I don’t use them anymore, but I did use one for my old Bachman On30 trolley. I really liked the looks of the On30 with the HO track, but it was just too much trouble to keep it running with all the scenery installed. The last time it stopped was the last it ever ran.

Well I have my New Bump-n-Go Trolley Addition running and made a short video, but I may have to hide the controller and use an AC light switch to turn it on and off because my 7 yr old grandson keeps turning it up and running it off the tracks.

 

You could make a "Speed Limiter" using hot melt glue to add a wood block to keep the throttle knob from turning past a safe level. Use low temp glue and it will stick, but still be removable without damaging the transformer case.

 

Nice layout.

 

thanks Len2,

Years ago I made a contraption for my CW80, but I lost it when I added a third train.

 

My wife said I needed to make another, but yesterday my grandson had all three throttles wide open and the only one that worried me was the top one, but it did pretty well. That one has the curve raised up in an incline which slows it down a bit. I have 20 cars on the bottom outside freight so it never goes too fast and for some reason the five 11”passenger cars in the center never go very fast either.

 

I have an old Lionel Type 4150 blue transformer which was my grandson’s first electric train that I may dig out and use it. I can do most anything to it without much concern because it only has a throttle.

The MTH set power supply is their ZDC-1 which is variable DC.