Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
searchwing-waterlanding [2019/03/30 15:28] j0ge4622 Merged topic waterproof and -landing |
searchwing-waterlanding [2021/04/13 00:22] beckmanf Kugellager |
||
---|---|---|---|
Line 11: | Line 11: | ||
* [[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) |
+ | * 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]]. Folgend Lager könnten als Austauschlage geeignet sein: |
- | {{:waterproof_bulkhead_2.jpg?400}} | + | * 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]] |
- | + | * 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]] | |
- | ==== Closing holes ==== | + | |
- | + | ||
- | 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}} | + | |
- | + | ||
- | I used the same technique also on other parts. | + | |
- | + | ||
- | ===== Sealing connections and small 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: | + | |
- | + | ||
- | {{:waterproof_hot_glue_single_holes.jpg?400}} | + | |
- | + | ||
- | ===== Waterproofing the servos ===== | + | |
- | + | ||
- | there are 2 interesting articles on Instructables on this topic: | + | |
- | + | ||
- | [[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) | + | |
- | + | ||
- | 1. Make the housing waterproof | + | |
- | + | ||
- | * 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 | + | |
- | + | ||
- | {{:servo_sealant.jpg?400}} | + | |
- | + | ||
- | 2. Insert a O-Ring under the horn | + | |
- | + | ||
- | * 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 | + | |
- | + | ||
- | {{:servo_oring.jpg?400}} | + | |
- | + | ||
- | ==== Test it... ==== | + | |
- | + | ||
- | - submerge in water while it moves - no bubbles should emerge | + | |
===== Waterproof capsule ===== | ===== Waterproof capsule ===== | ||
Line 74: | Line 36: | ||
{{: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&}} | ||