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--- rc:crab-20-quadcopter [04.11.2012 00:17]
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+++ rc:crab-20-quadcopter [19.06.2016 13:18] (current)
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@@ Line 1: / Line 1: @@
 ~~NOTOC~~
-====== Crab 20 Quadcopter ======
-{{ :rc:files:crab20:crab20_2.jpg?direct&350|}}
+<note important>This quadcopter was dismantled on 8.12.2014 after 144 flights due to the degraded condition of the frame. Replaced with [[rc:string-theory-quadcopter|String Theory Quadcopter]].</note>
-{{ :rc:files:crab20:crab20_1.jpg?direct&350|}}
+====== Crab 20 Quadcopter ======
 ^  Specifications  ^^
@@ Line 17: / Line 17: @@
 | M2M | 20 cm |
 | Flight time | around 6-8 minutes |
+{{:rc:files:crab20:crab20_2.jpg?direct&350|}}
+{{:rc:files:crab20:crab20_1.jpg?direct&350|}}
+===== Videos =====
+  * [[http://www.youtube.com/watch?v=CXzPbUqi9M8|BambuCopter Crab 20 indoor flying (23.2.2013)]]
+  * [[http://www.youtube.com/watch?v=SByl-lGXysc|Onboard indoor with Mobius ActionCam (15.2.2014)]]
 ===== Notes =====
@@ Line 23: / Line 31: @@
   - Don't overtighten motor screws since that may cause the frame material to crack
   - Short motor shafts equal low spinning propellers, watch your fingers when hand testing
+===== Motor benchmark =====
+The following motors were tested for this build:
+  * C10 2900KV with 5x3 prop (HobbyKing)
+    * weight with prop: 12 g
+  * T-Motor MT1306 3100KV with 5x3 prop (Flyduino)
+    * weight with prop: 14 g
+The same motors using a 4x2.5 prop are shown as reference in the image.
+{{:rc:files:crab20:motortest.png?direct&400|}}

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