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searchwing-waterproofing [2019/01/14 15:52] kingbbq [Waterproof the Servos] |
searchwing-waterproofing [2019/03/30 15:28] j0ge4622 removed |
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====== Making the plane waterproof for landing in the water ====== | ====== Making the plane waterproof for landing in the water ====== | ||
- | ===== Finding the right glue ===== | ||
- | I tried 3 different glues. | + | [[searchwing-waterproof-glue|searchwing-waterproof-glue]] |
- | The model we use (mini talon) is made with "EPU" expandend [[https://en.wikipedia.org/wiki/Polyurethane|PU]]. | + | |
- | I tried: | + | ===== Overview ===== |
- | * UHU POR - special glue for Styropor and similar foams. | + | {{::waterproof_overview.jpg?400|}} |
- | * UHU Plus - 5 min two component epoxy | + | |
- | * Hot Glue (Patex) | + | |
- | The results: | + | These are the sections to close on the fuselage. |
- | ====== UHU Plus ====== | + | ===== Bulkhead to separate the motor ===== |
- | Is not compatible with PU. Its neither waterproof, nor does it keep the parts together. | + | {{::waterproof_bulkhead.jpg?400|}} |
- | {{::uhu_plus_water.jpg?400|}} | + | {{::waterproof_bulkhead_2.jpg?400|}} |
- | ====== UHU Por ====== | ||
- | works well. good fixture and waterproof: | ||
- | {{:glue_uhu_por_vs_uhu_plus.jpg?400|}} | ||
- | But - the glue has to be applied in the right way! It has to be thin and completely dry before putting the parts together: | ||
- | {{:right_glue_technique_2.jpg?400|}} | + | ===== Closing holes ===== |
- | Bust is to spread it equally with a (gloved) finger: | ||
- | {{:right_glue_technique.jpg?400|}} | + | 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. | ||
+ | {{:waterproof_camera.jpg?400|}} | ||
- | ====== Hot Glue ====== | + | I used the same technique also on other parts. |
- | Hot glue also showed very good results, both for fixure and for waterproofing. | ||
- | {{:hotglue.jpg?400|}} | + | ====== Sealing connections and small holes ====== |
- | ====== Closing holes ====== | + | Using a good tape can close all kind of connections and other small or thin holes. I used "3m Blenderm" - a waterproof and flexible tape: |
+ | {{::waterproof_tape.jpg?400|}} | ||
+ | |||
+ | One other option is hot glue - as in this example: | ||
- | The so glued model had some holes to fill / close. | + | {{::waterproof_hot_glue_single_holes.jpg?400|}} |
- | I used thin plexi-glas. Best way to glue them was hot glue, as it can also fill little holes or irregularities in thickness. | + | |
- | {{:waterproof_camera.jpg?400|}} | ||
- | |||
- | I used the same technique also on other parts. | ||
- | ===== Waterproof the Servos ===== | + | ======== Waterproofing the servos ==== |
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1. Make the housing waterproof | 1. Make the housing waterproof | ||
- | - I used "Curil", a standard sealing compound. | + | * I used "Curil", a standard sealing compound. |
- | - Open the servo and put the sealant an all touching surfaces | + | * Open the servo and put the sealant an all touching surfaces |
- | - also put sealant to the cable, where it leads through the housing | + | * also put sealant to the cable, where it leads through the housing |
{{:servo_sealant.jpg?400|}} | {{:servo_sealant.jpg?400|}} | ||
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2. Insert a O-Ring under the horn | 2. Insert a O-Ring under the horn | ||
- | - remove the horn | + | * remove the horn |
- | - add a 1mm thick o-ring | + | * 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. | + | * 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 | + | * screw the horn back on |
{{:servo_oring.jpg?400|}} | {{:servo_oring.jpg?400|}} | ||
- | ====== Test it... ====== | + | ===== Test it... ===== |
- submerge in water while it moves | - submerge in water while it moves |