LGB 4 Wheel Railbus Batteryfication T25 (2065?) Battery Conversion

dunnyrail · 4 Oct 2018

So the latest project in my quest for a complete Battey World of Power. In truth the little LGB Railbuses are one of the best runners on Track Power due to their ability to keep all 4 Wheels on tha Track. But as I am going all Battery and had this in stock plus having a few others already up and running in DCC well battery it was.

Here is the donor Railcar. It is a very old one, quite likely originaly from a 2 car set and has had some dodgy reworking in the past which included soldered Wires from the Lower Circuit Board to the motor and many other bodgy electrics to it. Just as well it was being fixed!

A quick test showed that the motor ran ok so no wories in that department other than a major clean up,of the excess oil on wheels, slidy bogie area's and gear boxes. Some people really do like to splash the wrong type of oil everywhere!

For those that have never pulled one of these to bits there is a bit of an order as in all things LGB. First to get the roof off a good push underneath through the door removes it leaving a circuit board in place which sits on the 4 wires that provide power from the lower circuit board through the 4 metal handrails to the top circuit board. Clever atuff LGB. Turning the beast over reveals the lower picture view.

To remove the cover over the motor the 4 Yellow Marked screws are removed. This reveals the motor that can be unplugged form the circuit board. Remember how it goes back, take a picture! The red marked screws remove the sideframe assembly and the green marked ones allow the ends with sub rood to be removed.

Here you can see the underbely after the Yellow Screws and cover have been removed. Below is another (Piggy Nosed ine) that has been chipped with a Dentz Chip showing where it is possible to mount things.

Below you can see Test Fitting Battery and all the other kit to make this work, all to be mounted under the roof. At this stage the poles to the roof board have not yet been clipped short. They have been to allow all this kit to sit without those poles trashing it all!

I have used a Fosworks Receiver (Rx-2H), Transmitter (Tx-2.1), Wiring Loom, Battery Pack (NiMh 3 long by 4 wide), Cobra ESC-165 Speed Controller and a My Loco Sound Diesel Sound Unit with a small speaker. All seen above before fully and safely mounting below the roof.

dunnyrail · 5 Oct 2018

Wrapping up this little conversion are a few more pics. Below out in the line prior to completion but testing all the functions. As ever a little tweeking of the Souncard was required by use of the Peter Spoerer Remote Control to adjust some settings. What I had never realised about these before is that Sound Level is adjusted when something is working. Thus on Tickover which was near silent - (mine is the wrong way round) upped the volume nicely. This appears to also apply with the Bell and Horn which are the only things that interest me. The third button Starts and Stops the Motor.

You can see in this picture where I have placed the On/Off Button, charging socket and where the screw that holds the Fuse in place protrudes through the roof line. Plus the surplus holes at the front where the switch plus charging socket were mounted in the wrong place doh!

A removable Tank of some sort was mounted on the roof to disguise the Switch and Charge Socket. The surplus holes have been hidden by a dummy piece of plating with dummy rivets.

An Exhauset of some kind has now appeared. Plus the screw has been disguised with some plasticard to represent some kind of Ventilation Pot. You can also see the Handset that is used to drive the beastie.

Finally showing all the kit mounted on the Roof, the Green Board atop of the Battery is the Soundcard next to that is the Cobra Speed Control and after that the Receiver. All coupled together with a Fosworks Wiring Loom. These looms do make setting up a simple process but sometimes fitting stuff around the limited length of Wires can be a bit of a challenge. Certainly that was the case with this Conversions, others with more space have been simlicity in the extreme.

This pic shows where the Power to the motor disappears through a hole in the Cab to the motor.

That is pretty much it. I adjusted the Cobra to the slowest speed step which gives a scale speed of roughly 24kph, as the Selktalbahn had a Max of 20 on the one Drivers Card that I have seen I judge this to be fast enough. Oh and I have not wired in any lighting, this would be easliy achieved but the LGB Circuit Board on the Roof for the Top Lighting would need to be replaced somehow. Not yet tested it with a load but I suspect that 16 Axles should be well within its capababilities.

Rhinochugger · 5 Oct 2018

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