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Doc's Merkur Double Pump Windmill

Hi folks, Doc here, with something new that's actually old. Some time ago while hunting (with some difficulty) through a Czech language Web site devoted to Merkur, I found and downloaded a zip file. According to the information on the Web site - translated by a Czech friend of mine - the file contained the scanned pages of the oldest Merkur manual from the period 1920-1938. The pages - over 70 of them - feature detailed black and white illustrations of model designs ranging from small and simple to large and complex. I was fascinated by many of these designs, and decided to build a number of them. The illustrations showed that Merkur parts have changed little, if at all, over time, so in theory I should have no problem duplicating the models. And that proved to be the case. If you would like to examine the manual for yourself, or build any of the models in it, you can download it from our G-Files Downloads page.

The subject of this pictorial is the first of the models that I built from that manual. It is a traditional windmill design with a slender, tapered tower with a peaked roof and six blades that drive two water pumps. It features additional pulleys and gearing that can be used to power other devices or machinery.

I wanted the most realistic, industrial look I could get for the model, so I built as much of it as possible with the metallic colored parts from the Classic set. I did have to dip into my M8 set for some of the long angle girders (the red parts in the photos). I also needed every one of the truss girders M8 set (blue parts on the blades). The final look is good one, I think. In the first few photos you can see that I used the standard Merkur string to form belts around the various pulleys. When I operated the model, the string tended to slip. However, you'll notice in the last 3 photos that I have replaced the string with rubber o-rings, which made a real difference. Thanks go to my pal Larry W. for these.

The next step will be to hook up the motor and shoot some video of the model in action - not terribly exciting, but fun to watch. Look for that to appear here soon.