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Caterpillar D4D HGC Tractor - Ad Gevers

6 November 2022

Custom scale model builder Ad Gevers has recently started his next project of building his

Caterpillar D4D HGC Tractor

It is our goal for the coming period in this Making-of Caterpillar D4D HGC (High Ground Clearance)  Tractor to show how this custom model will be achieved.

As a basis for this project Ad uses as donor the Caterpillar D4D Small Dozer in 1:50th scale. This Golden Oldies scale model was released in 1970 by NZG NZG N├╝rnberger Zinkdruckguss-Modelle GmbH under #119.

Ad shares his building skills through the photos with little notes guiding us in the construction process. Gradually it shows the making of a unique model by using the donor Caterpillar D4D Dozer from NZG in 1:50th scale to create his one of kind Caterpillar D4D HGC Tractor.

Enjoy reading & watching!

Ad and Wouter

What preceded

Ad had had the idea of building the Caterpillar D4D in HGC version already for a long time.

But due to a lack of the right parts and (yet) no time and because of not making them himself, the project remained on the drawing board....

The Kickoff

....but when fellow collector and custom builder Andrea Nonnis from Brazil offered an HGC kit with the right track shoes, idler and sprocket for the Caterpillar D4D Dozer from NZG, Ad energetically started this new project.

The HGC undercarriage

For starters Ad has secured the sprocket cover plate so that they will both be the same size.

Ad first soldered four of these together, which was no problem, but then putting two of them together again to make the undercarriage went wrong. Too much heat entered the workpiece causing it to disintegrate.

The ultimately good solution was to make the undercarriages in one piece.

The next step in making the undercarriage is to install the bottom rollers into the new frame.

The axis is then assembled with the cover for the sprocket

To be continued soon...! So keep following the NEWS for updates.

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