RC Lander EDF performance

dennisp member Sembawang Skunk Works Posts: 1,039	RC Lander EDF performance Oct 11, 2008 20:27:51 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dennisp on Oct 11, 2008 20:27:51 GMT 8 For those who want more information on these fans check this link: www.rcgroups.com/forums/showthread.php?t=931750 There is some Eagle Tree FDR data as well.

SKYHOBBIES Administrator Admin Posts: 1,095	RC Lander EDF performance Feb 28, 2009 10:40:13 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SKYHOBBIES on Feb 28, 2009 10:40:13 GMT 8 RC LANDER 76mm (6S / 4500mAh) PROTO-TYPE TEST VIDEO:
	Last Edit: Feb 28, 2009 10:40:51 GMT 8 by SKYHOBBIES www.skyhobbies.com.sg

dennisp member Sembawang Skunk Works Posts: 1,039	RC Lander EDF performance Feb 28, 2009 14:54:59 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dennisp on Feb 28, 2009 14:54:59 GMT 8 Did I see 106 Amps....?

SKYHOBBIES Administrator Admin Posts: 1,095	RC Lander EDF performance Feb 28, 2009 16:16:01 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SKYHOBBIES on Feb 28, 2009 16:16:01 GMT 8 nope... I think I saw it hovering around 62 amps... Maybe Tim will ask you to ignore the "0" infront
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SKYHOBBIES Administrator Admin Posts: 1,095	RC Lander EDF performance Mar 1, 2009 2:04:28 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SKYHOBBIES on Mar 1, 2009 2:04:28 GMT 8 RC LANDER 90mm on 6S PROTO-TYPE TEST VIDEO:
	Last Edit: Mar 1, 2009 2:05:12 GMT 8 by SKYHOBBIES www.skyhobbies.com.sg

dt8666
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Posts: 614

RC Lander EDF performance Mar 1, 2009 16:02:36 GMT 8

Quote

Post by dt8666 on Mar 1, 2009 16:02:36 GMT 8

Cool... 3KG !!! almost 2KW!

But... the real result on flight will be lower. For the 3KG, that is on a highliy regulated PSU can provides constant Volt of 24.x V.

For a real situation, thye Lipo will drop to around 20V under load. so I believe it will drop to around 1600W at max.

Can you request the vendor to test one with 20V or 20.5V? That maybe a more realistic number for 6S.

Care to share also the kv for the motor?

Great Fan!!!

dt8666
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Posts: 614

RC Lander EDF performance Mar 1, 2009 16:07:56 GMT 8

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Post by dt8666 on Mar 1, 2009 16:07:56 GMT 8

Sorry.. that actual is at 2.01KW !!! and at 24.9V constant!
And I also got the Kv which is 1660.

So at actual Lipo used, the thrust might be estimated at 2.4kg! about 20% less.. Still a great number! Very close to a WemoMidi on a 1700kv motor.

SKYHOBBIES Administrator Admin Posts: 1,095	RC Lander EDF performance Mar 1, 2009 17:16:22 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SKYHOBBIES on Mar 1, 2009 17:16:22 GMT 8 Would you think 30C lipos help better KW output at least for very first few minutes of launch and dives?
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dennisp member Sembawang Skunk Works Posts: 1,039	RC Lander EDF performance Mar 1, 2009 18:52:46 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dennisp on Mar 1, 2009 18:52:46 GMT 8 Do watch the Lipo cell weights, OK good puff, more weight higher wing loading .. Sadly that is the price we pay for more puff... but two interesting products from Tim...

dt8666
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Posts: 614

RC Lander EDF performance Mar 1, 2009 21:13:43 GMT 8

Quote

Post by dt8666 on Mar 1, 2009 21:13:43 GMT 8

Mar 1, 2009 17:16:22 GMT 8 SKYHOBBIES said:

Would you think 30C lipos help better KW output at least for very first few minutes of launch and dives?
::)

Well... 30C or even 25C both capaple to handle 80A for initial burst. But that is not the story.. the reality is even at 30C capable Lipo, the Voltage still not able to hold firm at 24.9V.

Even today's 20C 5000mah pack can take theoritically 100A but the voltage still cannot hold that high lah..

As Dennis said, weight will comes in as the pack goes bigger or higher on C.. haha... No free meal!