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40x40x20 PC fan adapter Camper RV SOG WC Thetford TTT terrarium  3D Printer File Image 1
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40x40x20 PC fan adapter Camper RV SOG WC Thetford TTT terrarium

formforfunction avatarformforfunction

November 30, 2025

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Description

Fotodokumentation siehe Fotos. Die Teile auf den Fotos sind nicht schön gedruckt, funktionieren aber trotzdem.

Zwei identische Teile werden in PETG gedruckt, der Lüfter 40x40x20 und die Wellrohre mit Außendurchmesser 24 mm (hier Marke Auprotec, innen 19 mm) eingesteckt und die Teile mit M4er Schrauben fest zusammengeschraubt, ohne jede Dichtung. Das Wellrohr hält dann auch sicher im Gehäuse. Das Ganze wird nicht 100 % druckdicht, aber das muss es auch nicht, es funktioniert wunderbar so, ohne Geruch im Camper, auch im Sommer.

Die Schraubengröße ist auf den Fotos, ich habe M4 Buchschrauben verwendet. Es geht aber auch mit langen M5, die Schrauben und Muttern sitzen dann eben oben auf.

Der Halter wird an Wand/Decke/Boden geschraubt und der Adapter eingeklickt. Man sollte vorher ausprobieren, ob sich der Schall damit auf die Wand überträgt und verstärkt.

Außerdem ist ein Adapter vom Wellrohr mit 24 mm Außendurchmesser auf die "VARIOSAN Tankdurchführung 16669, 3/4" Außengewinde x 19 mm Winkel-Schlauchtülle 90°", die ich in den gelben Verschlussdeckel der WC-Cassette eingesetzt habe. Und ein Stopfen dafür, den man beim Ausleeren drauf macht. Der Adapter und der Deckel müssen flexibel sein, daher TPU gedruckt werden.

Ich habe einen Aktivkohlefilter aus einem Rohr DN100 selbst gebaut, durch den die Luft aus der WC-Cassette gefiltert nach draußen geht. Der Noctua-Lüfter ist kaum zu hören und der Kohlefilter ist auch besser als der vom SOG.

ENGLISCH
See photos for photo documentation. The parts in the photos are not beautifully printed, but they still work.

Two identical parts are printed in PETG, the 40x40x20 fan and the corrugated pipes with an outer diameter of 24 mm (here Auprotec brand, inner diameter 19 mm) are inserted, and the parts are screwed together tightly with M4 screws, without any seals. The corrugated pipe then holds securely in the housing. The whole thing is not 100% pressure-tight, but it doesn't need to be; it works wonderfully as it is, with no smell in the camper, even in summer.

The screw size is shown in the photos; I used M4 book screws. However, long M5 screws can also be used, in which case the screws and nuts sit on top.

The holder is screwed to the wall/ceiling/floor and the adapter is clicked into place. You should test beforehand whether this transmits and amplifies the sound to the wall.

You will also need an adapter from the corrugated pipe with an outer diameter of 24 mm to the “VARIOSAN tank feed-through 16669, 3/4” external thread x 19 mm 90° angle hose nozzle," which I inserted into the yellow cap of the toilet cassette. And a plug for it, which you put on when emptying. The adapter and the cap have to be flexible, so they have to be printed in TPU.

I built an activated carbon filter myself from a DN100 pipe, through which the air from the toilet cassette is filtered before it goes outside. The Noctua fan is barely audible and the carbon filter is also better than the one from SOG.

Translated with DeepL.com (free version)

License:

Creative Commons - Attribution - Share Alike

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