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Old Jan 13, 2010, 08:18 AM
Team White Llama!
gundamnitpete's Avatar
Joined Jan 2008
8,144 Posts
The lander rotors are wemo copies. I've ran my wemo's and HET's to 60,000 rpm out of the box, I don't know how much power a lander rotor can take. Although if your just sport flying and not pushing 2kw through them, I think they'd be fine.
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Old Jan 13, 2010, 04:46 PM
Registered User
Deutschland
Joined Oct 2008
76 Posts
Living in Germany I ordered one on Monday this week at wemotec.com and got it one day later - no idea about shipment costs to US..

One of the guys in Germany compared 4 impellers. Here the results:
http://www.rc-network.de/forum/showt...t=85850&page=3

Translated:

Trust at 1000W:
HET 6903 (copy of Schuebeler DS30dia): 975W, 1675g 1,72g/W
HET 6904: 1025W, 1700g, 1,66g/W
Wemotec MF 480: 1025W, 1700g, 1,66g/W
WM 400: 1030W, 1600g 1,55g/W
"Smoothness":
  1. HET 6903 (copy of Schuebeler DS30dia)
  2. WM 400
  3. MF480
  4. HET 6904

Rainer
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Old Jan 13, 2010, 09:41 PM
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Joined Nov 2006
254 Posts
Exit airspeed matters too

I believe that guy that published these data has left out the exit speed too.

Anthony

Quote:
Originally Posted by husel View Post
Living in Germany I ordered one on Monday this week at wemotec.com and got it one day later - no idea about shipment costs to US..

One of the guys in Germany compared 4 impellers. Here the results:
http://www.rc-network.de/forum/showt...t=85850&page=3

Translated:

Trust at 1000W:
HET 6903 (copy of Schuebeler DS30dia): 975W, 1675g 1,72g/W
HET 6904: 1025W, 1700g, 1,66g/W
Wemotec MF 480: 1025W, 1700g, 1,66g/W
WM 400: 1030W, 1600g 1,55g/W
"Smoothness":
  1. HET 6903 (copy of Schuebeler DS30dia)
  2. WM 400
  3. MF480
  4. HET 6904

Rainer
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Old Jan 14, 2010, 07:28 AM
AKA Terry Till
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Alexandria, VA
Joined Apr 2002
1,485 Posts
Quote:
Originally Posted by velocity-rc View Post
I believe that guy that published these data has left out the exit speed too.

Anthony
-The data is from February 2007(!) This is with the Mk 1 rotor. Hopefully this weekend I can do a few tests with the MK 2 and compare. Hopefully
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