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searchwing-waterlanding [2019/03/30 15:28] – Merged topic waterproof and -landing j0ge4622searchwing-waterlanding [2021/04/18 22:17] (current) – [Kugellager] beckmanf
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   * [[https://www.youtube.com/watch?v=dBxiN9bK3UI|Thales Fulmar with waterlanding]] with [[https://www.thalesgroup.com/sites/default/files/database/d7/asset/document/fulmar-ing_final_24-02-2014.pdf|Datasheet]]   * [[https://www.youtube.com/watch?v=dBxiN9bK3UI|Thales Fulmar with waterlanding]] with [[https://www.thalesgroup.com/sites/default/files/database/d7/asset/document/fulmar-ing_final_24-02-2014.pdf|Datasheet]]
  
-===== Construction =====+===== Kugellager =====
  
-[[:searchwing-waterproof-glue|]]+=== Tests / Research ===
  
-==== Overview ====+  * {{ ::technical_note._salt_water_testing.pdf | I. Milenkov, G. Walter, "Evaluation of the performance of electric motor and the effect of salt water on it.", Technical Note, Nov. 2020}}
  
-{{:waterproof_overview.jpg?400}}+=== Austauschlager ===
  
-These are the sections to close on the fuselage.+Der Motor ist außerhalb des Rumpfes und deshalb mit Seewasser in Kontakt. Die Kugellager können gegen wasser- und rostgeschützte Varianten getauscht werden. Markus hat bei einigen Motoren die Lager getauscht. Am Motor sind zwei Lager verbaut:
  
-==== Bulkhead to separate the motor ====+  * Lager 1 ist ID=5, AD=16, H=5 (mm)Ìý
 +  * Lager 2 ist ID=5, AD=11, H=5 (mm)
  
-{{:waterproof_bulkhead.jpg?400}}+Die Tauschlager sollten möglichst aus VA Stahl und bevorzugt mit einer Dichtung aus NBR (2RS) statt einem Deckel (2Z) ausgestattet sein. Bei SKF gibt es ein [[https://www.skf.com/de/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings|Suchformular]]. Folgende Lager könnten als Austauschlage geeignet sein:
  
-{{:waterproof_bulkhead_2.jpg?400°¨°¨Ìý+  * Lager 1: [[https://www.skf.com/de/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings/productid-W%20625-2RS1|SKF W 625-2RS1]] oder [[https://www.hug-technik.com/shop/product_info.php?info=p35735|ZEN S625-2RS]] oder [[https://www.ludwigmeister.de/artikel/rillenkugellager/38079/ezo-miniaturlager-mit-beidseitiger-abdichtung-niro/248625-2rs-va-1014259|EZO 248-625-2RS-VA]]Ìý
-Ìý+  * Lager 2: [[https://www.skf.com/de/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings/productid-W%20638%2F5-2RS1|SKF W 638/5-2RS1]] oder [[https://www.hug-technik.com/shop/product_info.php?info=p35772|ZEN S685-2RS]] oder EZO 685-2RS-VA
-==== Closing holes ====Ìý+
-Ìý+
-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.Ìý+
-Ìý+
-{{:waterproof_camera.jpg?400°¨°¨Ìý+
-Ìý+
-I used the same technique also on other parts.Ìý+
-Ìý+
-===== Sealing connections and small holes =====Ìý+
-Ìý+
-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:Ìý+
-Ìý+
-{{:waterproof_tape.jpg?400°¨°¨Ìý+
-Ìý+
-One other option is hot glue - as in this example:Ìý+
-Ìý+
-{{:waterproof_hot_glue_single_holes.jpg?400°¨°¨Ìý+
-Ìý+
-===== Waterproofing the servos =====Ìý+
-Ìý+
-there are 2 interesting articles on Instructables on this topic:Ìý+
-Ìý+
-[[https://www.instructables.com/id/Water-proofing-a-Servo/|https://www.instructables.com/id/Water-proofing-a-Servo/]] [[https://www.instructables.com/id/Waterproof-your-servo-motors/|https://www.instructables.com/id/Waterproof-your-servo-motors/]] (if you want to follow this one, dont forget the glitter on your finger nails)Ìý+
-Ìý+
-1. Make the housing waterproofÌý+
-Ìý+
-* 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 housingÌý+
-Ìý+
-{{:servo_sealant.jpg?400°¨°¨Ìý+
-Ìý+
-2. Insert a O-Ring under the hornÌý+
-Ìý+
-* 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 onÌý+
-Ìý+
-{{:servo_oring.jpg?400°¨°¨Ìý+
-Ìý+
-==== Test it... ====Ìý+
-Ìý+
-- submerge in water while it moves - no bubbles should emerge+
  
 ===== Waterproof capsule ===== ===== Waterproof capsule =====
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 {{:wiki:img_6a0ab1732ff3-1.jpeg?nolink&800|img_6a0ab1732ff3-1.jpeg}} {{:wiki:img_6a0ab1732ff3-1.jpeg?nolink&800|img_6a0ab1732ff3-1.jpeg}}
 +
 +===== Waterproof Block Diagram =====
 +
 +{{:wiki:blockschaltbild.png?nolink&}}
  
  
  • searchwing-waterlanding.1553956106.txt.gz
  • Last modified: 2019/03/30 15:28
  • by j0ge4622