Unterschiede zwischen den Revisionen 1 und 15 (über 14 Versionen hinweg)

MK3638 & MK3538

Inhaltsverzeichnis

MK3638 & MK3538
Photo
where to buy
Features
Technical data
Mounting plan
Thrust over current
1. Different props
2. APC Propellers
  1. 13x6,5 APC
  2. EPP-CF (chopped fiber)
How to read the curves
1. Example
2. Flight time
Rotation direction

Photo

where to buy

The Motor is custom made for MikroKopter only. You can buy it here

Features

This motor has long wires (52cm), a short shaft and a small clipring. So it can be mounted directly on the aluminium arm.

Technical data

Voltage Lithium:	3-6
Current:	max 20A
Current max. (60 Sek.):	25 A
RPM/V:	770 Rpm/V
Propellers:	10" - 14"
Efficiency:	must still be measured
Electrical power:	max 350 W
Thrust max.:	max 2200 g
Weight (only motor)	100g
Weight incl. cable and adapter	125g
Dimensions:	h=38 d=35 mm
Shaft diameter:	4 mm

Mounting plan

Thrust over current

Different props

Same curve in higher resolution:

APC Propellers

13x6,5 APC

EPP-CF (chopped fiber)

How to read the curves

With this curves it is easy to estimate the needed current and even estimate the flight-time.

You can read the needed current for each needed thrust

Example

The total weight of a MikroKopter (4 Rotors) is 1400g -> so each motor needs a thrust of 350g for hovering (1400g / 4 = 350g)

Current needed for 350g with the 13x6,5 APC - Propeller? -> 1,8A

Current needed for 350g with the 12x8 APC - Propeller? -> 2,4A

The total current for all four motors would be 7,2A (4 * 1,8A) or 9,6A (4 * 2,4A)

Flight time

You can estimate the flight time with this formular:

Time = 54 * Lipo / Current

(54 because we estimate 10% losses -> 60 * 0,9)

In case we would have a 3300 Lipo (3,3Ah), the Flight time for the 13x6,5 would be:

Time = 54 * 3,3 / 7,2 = 24,7 min

The same for the 12x8 Prop:

Time = 54 * 3,3 / 9,6 = 18,5 min

That is a different of 33% in flight time!

Rotation direction

Clockwise (seen from above)

Connection:

A = gray
B = blue
C = black

Counter-clockwise (seen from above)

Connection:

A = blue
B = gray
C = black

difference MK3538 vs. MK3638

Compared to the MK3538 the MK3638 has laser engravings and bigger ball bearings. The bigger bearings make the motor more silent.

KategorieMotoren

KategorieMotoren

-  ⇤ ← Revision 1 vom 15.09.2010 11:19 → 
  Größe: 3366
  Autor: HolgerB
  Kommentar: New page
+   ← Revision 15 vom 28.04.2011 18:43 → ⇥
  Größe: 4700
  Autor: HolgerB
  Kommentar:
-Gelöschter Text ist auf diese Art markiert.
+Hinzugefügter Text ist auf diese Art markiert.
 Zeile 1:
-siehe auch: [[ROXXY2827-35]], [[ROXXY2827-34]], [[ROXXY2815]], [[ROXXY2824-34]], AntriebsTheorie
+## page was renamed from MK3838
see also: [[ROXXY2827-35]], [[ROXXY2827-34]], [[ROXXY2815]], [[ROXXY2824-34]], AntriebsTheorie
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+Zeile 4:
+= MK3638 & MK3538 =
-Zeile 6:
+Zeile 8:
+[[http://gallery.mikrokopter.de/main.php/v/tech/MK3638_001.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=80891}}]]
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+Zeile 10:
-[[http://gallery.mikrokopter.de/main.php/v/tech/MK3538a.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=67382}}]]
+[[http://gallery.mikrokopter.de/main.php/v/tech/MK3538d.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=67393}}]]
-Zeile 11:
+Zeile 13:
-[[http://gallery.mikrokopter.de/main.php/v/tech/MK3538d.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=67393}}]]
+= where to buy =
The Motor is custom made for MikroKopter only. You can buy it [[https://www.mikrocontroller.com/index.php?main_page=product_info&cPath=73&products_id=615|here]]
-Zeile 16:
+Zeile 19:
+[[http://gallery.mikrokopter.de/main.php/v/tech/MK3538e.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=67397}}]]
-Zeile 17:
+Zeile 21:
-= technical data =
+= Technical data =
-Zeile 23:
+Zeile 27:
-||Efficency: || max. 74 % ||
||Electruical power: || max 350 W ||
+||Efficiency: || must still be measured ||
||Electrical power: || max 350 W ||
-Zeile 29:
+Zeile 33:
-||shaft diameter: ||4 mm ||
+||Shaft diameter: ||4 mm ||

= Mounting plan =

[[http://gallery.mikrokopter.de/main.php/v/tech/MK3538.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=69565}}]]
-Zeile 33:
+Zeile 41:
-== different Props ==
+== Different props ==
-Zeile 46:
+Zeile 54:
+=== EPP-CF (chopped fiber) ===
[[http://gallery.mikrokopter.de/main.php/v/tech/MK3538_characteristic_curve_EPP_CF.gif.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=75006}}]]
-Zeile 52:
+Zeile 63:
-== Example: ==
+== Example ==
-Zeile 54:
+Zeile 65:
-The total weight of a MikroKopter (4 Rotors) is 1400g -> so each motor needs a thrust of 350g for hoovering (1400g / 4 = 350g)
+The total weight of a MikroKopter (4 Rotors) is 1400g -> so each motor needs a thrust of 350g for hovering (1400g / 4 = 350g)
-Zeile 69:
+Zeile 80:
+(54 because we estimate 10% losses -> 60 * 0,9)
-Zeile 80:
+Zeile 93:
-See alos: FlugZeit
+See also: FlugZeit
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+Zeile 95:
-= rotation direction =
== clockwise (seen from above) ==
+= Rotation direction =
== Clockwise (seen from above) ==
-Zeile 89:
+Zeile 102:
-== counter-clockwise (seen from above) ==
+== Counter-clockwise (seen from above) ==
-Zeile 95:
+Zeile 108:
+== difference MK3538 vs. MK3638 ==
[[http://gallery.mikrokopter.de/main.php/v/tech/MK3538a.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=67381}}]]
[[http://gallery.mikrokopter.de/main.php/v/tech/MK3638.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=80886}}]]

Compared to the MK3538 the MK3638 has laser engravings and bigger ball bearings. The bigger bearings make the motor more silent.
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+Zeile 117:
+----
KategorieMotoren