This model was the first conversion of a "real" DC loco for AC Operation I did. Before, I had of course converted several Märklin Hamo models, however, these locos were only versions of AC models, which had been modified for DC operation. So, their conversions weren't very difficult.

In this case however, I had choosed a loco of which no serial AC version existed. Well, a special catalog for Eastern German model trains told there was an AC version, however I doubt that this item has ever been left the factory halls. At least, I have never seen any!

So, I had to search for the best way to install a pickup shoe and a reversing unit at first!

Several views of the Gützold-V100.

A view of the bottom side of the completely converted engine

On the left picture we see an original bogie. Older versions have an completely covered gear box. At the other bogier, where the pickup shoe has been installed, all gears had been removed before. The cross members have been filed off, so I got a planar place to mount the pickup shoe. Form inside, I fixed a small sheet metal plate with a M2 thread - before, I had drilled a little hole there.

Please regard the pickup shoe's position - it has enough room on turnouts, because the gears on the axles have been removed, to. On the right edge of the picutre, it can be seen that some materail of the middle section, below the driver's cab, has been shaped off.
 

The original wheels were replaced by those of a Märklin V200 (#3021). Wheels and axles have the same diameters! Don't forget to fit spacing washers! Otherwise, ths loco could get a lot of side flow, so that it could slide for example a platform and derail.

Trix axles have a diameter of  2,5 mm, like those of Märklin und Trix. So I used spacing washers with an inner diameter of 2,7 mm. On every side I installed one spacing washer, which is enough.

The numbers of the Märklin wheels are:

211 370 - with traction tires

215 770 - without traction tires

The wheels look, in fact, like the original Gützold wheels! More important is, however, to equip the driven bogie only with wheels with traction tires, so that the loco doesn't loose any traction power! 

The engine's interiors
Here we see the driving system via a cardan shaft.	The other side, were all gears have been removed to create room for a reversing unit and a pickup shoe.
	Originally, the engine had, in fact, no wiring. The metal frame is consisting of two isolated parts. Currency was taken from the rail directly by wheel contacts. The two metal clamps, holding the motor on the chassis, were the electrical conenction between the two parts of the metal frame and the motor connections. Originally, there were two chokes for radio interference suppression. If you remove these choke coils, you sever the electrical connection. Otherwise, you could isolate the metal clamps, but there would alway be the danger of short circuits.
To create enough room for the reversing unit, also some material of the ballast wheight had to be shaped off. The ballast wheight has been iolated with some isolation tape, to prevent its contact with the reversing unit.

Allthough meanwhile better model of this DR V100 are available on the model train market - this is an ideal models for beginners, for people who want to start with locomotive conversions.

If something will get damaged by the conversion, a part of a bogier, for example - never mind, you get nearly all spare parts from Gützold!

Disclaimer. I can NOT be held responsible for any damage you cause by following my instructions, on modifying your model railway equipment. Everything you are doing, you are doing it on your own risk!