RCLander new modified 90mm EDF set testing video - RC Groups
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Oct 17, 2009, 02:38 AM
Registered User

RCLander new modified 90mm EDF set testing video

Dear All,

Attached is our new modified 90mm EDF set testing video for sharing with you. The modification step is added a new small size metal fan between the motor and main blade for increasing the ventilation performance in order to protect and raise the motor performance. The small size metal fan can be let the fresh air coming in from the new metal rear tube and pass through the motor out from the front window with the thrust air under the negative pressure during operation. It is shown a very well result and able support to take 8S power for 90mm size edf. This time I take a lower kv amount(1280kv) motor (same size as the 6S version) and use 8S power to make the test. This modification will be applied to the existing 6S 90mm version and coming 120mm 12S version.
I hope above to be solved some concern regading of the motor issue from our customer. If you have any question, please feel free to contact us.

Hope you like it.

Best regards,
Last edited by Tim Wan; May 23, 2010 at 03:49 AM.
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Oct 17, 2009, 09:07 AM
Registered User
lefabdusud's Avatar
Hello Tim,

This is a great progress, I will be pleased to try it once available !

I spent many time trying to identify an 8S motor which could fit your 90mm EDF.

Could you let me know what are the motor reference you used, or a list or preferred motors for 8S setup ?

Also, I would appreciate to get the following, for the 90mm EDF :
- the max diameter of the motor
- the distance between fixing holes
- the type of screw required

Oct 17, 2009, 10:09 AM
Like my Goat?
F7X's Avatar
6.77 lbs of thrust at just shy of 2000 watts of power, how does this stack up against the competition?

Do you know the eflux velocity?
Oct 17, 2009, 11:43 AM
Registered User
lutach's Avatar
Nice video. I learned a thing watching it and I'll use it for my car application.
Oct 17, 2009, 11:50 AM
Registered User
Things were getting pretty toasty after the airflow was removed! Wonder where the temp tops out?
Oct 17, 2009, 07:22 PM
badpilotto's Avatar

What were the temperature of the same setup prior to the modification? I see the temp was hitting 62-68C.

Oct 18, 2009, 12:10 AM
corsair nut's Avatar
tim i hate to say it, but that 120mm version blade sure looks like...err...looks exactly like a turbax rotor. thats not cool unless you got permission from JHI to use it.
Oct 22, 2009, 10:01 AM
Hawk Fanatic
SkylineFlyer's Avatar

For those that have the old 90mm 6s motors/fan setup, is there a way to upgrade it? If so, where do we order those parts and how much?
Oct 29, 2009, 01:11 PM
Hawk Fanatic
SkylineFlyer's Avatar
How about an answer Tim.
Oct 29, 2009, 02:24 PM
Registered User

Upgrade of our 90mm edf

Originally Posted by skyline_g35
How about an answer Tim.
Dear skyline_g35,

The upgrade version 90mm edf will be expected to launch on or before end of next week. Since we are stilling waiting the new upgrade spare parts which will be received on early of next week.
You can contact EJF to place your pre-order first. If you have any question, please feel free to contact us.
Thanks for your interesting and supporting our products.

Best regards,
Dec 03, 2009, 11:52 PM
Hawk Fanatic
SkylineFlyer's Avatar
I feel like your skirting around the question.

For those that have the 6s setup, are you going to be offering us the ability to purchase the 8s motor for our existing fans?

I would like a answer to this question. Thanks!

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