Unterschiede zwischen den Revisionen 2 und 20 (über 18 Versionen hinweg)

MK3638 & MK3538

Inhaltsverzeichnis

MK3638 & MK3538
Photo
1. Version V2
where to buy
Features
Technical data
Mounting plan
Thrust over current
How to read the curves
1. Example
2. Flight time
Rotation direction

Photo

Version V2

4 holes for propeller mount
for direct propeller mount

where to buy

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

Plate for direct carbon propeller mount 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:	760 Rpm/V
Wire resistance:	0,11 Ohm
Phase resistance:	0,07 Ohm
No-load Current:	0,65A @ 10V
Num. magnetic poles:	14
Propellers:	10" - 14"
Max. Efficiency (g/W):	7.36
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

MK3638 16V (4S) 12" Carbon

This Prop
This Motor

MK3638 4S 14" Carbon

MK3638 4S 15" Carbon

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

The technical data and weight are the same for both types.

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

Also the shrink tube (cable protection) is longer.

KategorieMotoren

KategorieMotoren

-  ⇤ ← Revision 2 vom 15.09.2010 11:20 → 
  Größe: 3364
  Autor: HolgerB
  Kommentar:
+   ← Revision 20 vom 06.03.2015 13:10 → ⇥
  Größe: 5735
  Autor: LotharF
  Kommentar:
-Gelöschter Text ist auf diese Art markiert.
+Hinzugefügter Text ist auf diese Art markiert.
 Zeile 1:
-see also: [[ROXXY2827-35]], [[ROXXY2827-34]], [[ROXXY2815]], [[ROXXY2824-34]], AntriebsTheorie
+## page was renamed from MK3838
see also: AntriebsTheorie, [[en/MotorCurves]]
-Zeile 3:
+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}}]]
-Zeile 7:
+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}}]]
+== Version V2 ==
{{https://www.mikrocontroller.com/images/MK36385V2_.JPG}}

{{https://www.mikrocontroller.com/images/3holemount_1.JPG}}

{{https://www.mikrocontroller.com/images/3holemount_2.JPG}}

 * 4 holes for propeller mount
 * for direct propeller mount

= 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]]


Plate for direct carbon propeller mount [[https://www.mikrocontroller.com/index.php?main_page=product_info&cPath=75&products_id=861|here]]
-Zeile 16:
+Zeile 33:
+[[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 35:
-= technical data =
+= Technical data =
-Zeile 21:
+Zeile 40:
-||RPM/V: || 770 Rpm/V ||
+||RPM/V: || 760 Rpm/V ||
||Wire resistance: || 0,11 Ohm ||
||Phase resistance: || 0,07 Ohm ||
||No-load Current: || 0,65A @ 10V ||
||Num. magnetic poles: || 14 ||
-Zeile 23:
+Zeile 46:
-||Efficency: || max. 74 % ||
||Electruical power: || max 350 W ||
+||Max. Efficiency (g/W): || 7.36 ||
||Electrical power: || max 350 W ||
-Zeile 29:
+Zeile 52:
-||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 60:
-== different Props ==
+<<Include(en/MotorCurves, , from="##include_3638_begin", to="##include_3638_end")>>

== Different props ==
-Zeile 46:
+Zeile 75:
+=== 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 84:
-== Example: ==
+== Example ==
-Zeile 54:
+Zeile 86:
-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 101:
+(54 because we estimate 10% losses -> 60 * 0,9)
-Zeile 80:
+Zeile 114:
-See alos: FlugZeit
+See also: FlugZeit
-Zeile 82:
+Zeile 116:
-= rotation direction =
== clockwise (seen from above) ==
+= Rotation direction =
== Clockwise (seen from above) ==
-Zeile 89:
+Zeile 123:
-== counter-clockwise (seen from above) ==
+== Counter-clockwise (seen from above) ==
-Zeile 95:
+Zeile 129:
+== difference MK3538 vs. MK3638 ==
The technical data and weight are the same for both types.

[[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.

[[http://gallery.mikrokopter.de/main.php/v/tech/MK3638Compare1.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=80927}}]]

[[http://gallery.mikrokopter.de/main.php/v/tech/MK3638Compare2.jpg.html|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=80931}}]]

Also the shrink tube (cable protection) is longer.
-Zeile 96:
+Zeile 146:
-Zeile 99:
+Zeile 148:
+----
KategorieMotoren