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searchwing-waterproofing [2019/01/14 15:56] kingbbq [Waterproof the Servos] |
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| - | ====== Making the plane waterproof for landing in the water ====== | ||
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| - | ===== Finding the right glue ===== | ||
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| - | I tried 3 different glues. | ||
| - | The model we use (mini talon) is made with "EPU" expandend [[https://en.wikipedia.org/wiki/Polyurethane|PU]]. | ||
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| - | I tried: | ||
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| - | * UHU POR - special glue for Styropor and similar foams. | ||
| - | * UHU Plus - 5 min two component epoxy | ||
| - | * Hot Glue (Patex) | ||
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| - | The results: | ||
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| - | ====== UHU Plus ====== | ||
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| - | Is not compatible with PU. Its neither waterproof, nor does it keep the parts together. | ||
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| - | {{::uhu_plus_water.jpg?400|}} | ||
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| - | ====== UHU Por ====== | ||
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| - | works well. good fixture and waterproof: | ||
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| - | {{:glue_uhu_por_vs_uhu_plus.jpg?400|}} | ||
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| - | But - the glue has to be applied in the right way! It has to be thin and completely dry before putting the parts together: | ||
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| - | {{:right_glue_technique_2.jpg?400|}} | ||
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| - | Bust is to spread it equally with a (gloved) finger: | ||
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| - | {{:right_glue_technique.jpg?400|}} | ||
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| - | ====== Hot Glue ====== | ||
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| - | Hot glue also showed very good results, both for fixure and for waterproofing. | ||
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| - | {{:hotglue.jpg?400|}} | ||
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| - | ====== Closing holes ====== | ||
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| - | The so glued model had some holes to fill / close. | ||
| - | I used thin plexi-glas. Best way to glue them was hot glue, as it can also fill little holes or irregularities in thickness. | ||
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| - | {{:waterproof_camera.jpg?400|}} | ||
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| - | I used the same technique also on other parts. | ||
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| - | ======== Waterproofing the servos ==== | ||
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| - | there are 2 interesting articles on Instructables on this topic: | ||
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| - | https://www.instructables.com/id/Water-proofing-a-Servo/ | ||
| - | https://www.instructables.com/id/Waterproof-your-servo-motors/ (if you want to follow this one, dont forget the glitter on your finger nails) | ||
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| - | 1. Make the housing waterproof | ||
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| - | - I used "Curil", a standard sealing compound. | ||
| - | - Open the servo and put the sealant an all touching surfaces | ||
| - | - also put sealant to the cable, where it leads through the housing | ||
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| - | {{:servo_sealant.jpg?400|}} | ||
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| - | 2. Insert a O-Ring under the horn | ||
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| - | - remove the horn | ||
| - | - add a 1mm thick o-ring | ||
| - | - add some lubrication. I used "CRC Multilube" - attention - lubrication has to be compatible with the rubber of the sealant. Don't use silicon rings with silicon lubricant. | ||
| - | - screw the horn back on | ||
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| - | {{:servo_oring.jpg?400|}} | ||
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| - | ====== Test it... ====== | ||
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| - | - submerge in water while it moves | ||
| - | - no bubbles should emerge | ||
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