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Old Aug 23, 2012, 11:42 AM
Ming's Avatar
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New Product! Changesun 90mm Smart Fan

Dear All EDF Fellows

After almost 18 months of time, the new fan molding finally ready to go mass production. That is a long road from rough idea to product launch to the market, we forgot how many difficulties need to overcome in the past 18 months. We will accept pre-order very very soon!

Brand: Changesun
Product : CS Smart Fan
Inside diameter: 91mm
Rotor diameter: 89mm
Meterial: Fibre Reinforced Nylon Rotor
Motor: Depend on blade combination
Loading: Depend on blade combination
Number of battery cell: Depend on blade combination
Shaft adaptor: 5mm
Thrust: 2.45g

*Multi- blade combination selection*
*Two group of difference pitch of blade to use*
*This is the total solution of 90mm EDF*
*Optional to use aluminum duct*
*Patent Pending*


Ming Lou
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Last edited by Ming; Aug 23, 2012 at 01:03 PM.
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Old Aug 23, 2012, 11:45 AM
Ming's Avatar
Hong Kong
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Forgot to mention the sound is even better than the CS 90mm 12 blades fan.
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Last edited by Ming; Aug 23, 2012 at 11:55 AM.
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Old Aug 23, 2012, 12:02 PM
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Greece, Attica, Athens
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Woah!!! This is a fiddlers dream...
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Old Aug 23, 2012, 12:24 PM
Should've, Would've, Could've
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United States, CA
Joined Dec 2010
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Wow!!! 18 blades I cannot wait! N will absolutely preorder. Thank you guys for making these types of fans affordable. What are the recommended motor kv for ea. 6s, 8s, 10s? 6s - 1100-1200kv- 1300kv? Etc
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Old Aug 23, 2012, 12:28 PM
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United States, TX, Grand Prairie
Joined Nov 2005
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It's 18 blades,

I have it in my Fly Fly F100...

Don't want to let numbers out yet...

I ran mine with rounded intake lip and the white noise is as loud as I've heard out of any fan even without an intake lip.

For example: Spin 10 blades at 150k rpm max (for turbine) or spin 20 blades at 70k rpm (or close) and the white noise coming off the blades is loud and very realistic.

With a very balanced rotor the turbine high frequency like whistle can be heard at lower RPMs also so when you're taxing the sound is VERY VERY nice depending on motor of course and how well balanced the rotor is.
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Last edited by erh7771; Aug 24, 2012 at 08:53 AM.
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Old Aug 23, 2012, 12:29 PM
Ming's Avatar
Hong Kong
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Thank you!
Full technical data will be posted within next few days.
The sound is very nice I can say!

Ming Lou
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Old Aug 23, 2012, 12:38 PM
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Will pre-order details be avail. @ that time also?
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Old Aug 23, 2012, 12:53 PM
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Hong Kong
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Quote:
Will pre-order details be avail. @ that time also?
Limited supply within a month.
I am personally like the low pitch voice most, it not annoying at all just like music.

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Old Aug 23, 2012, 01:06 PM
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Old Aug 23, 2012, 01:12 PM
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I'll be waiting!!!
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Old Aug 23, 2012, 01:13 PM
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Very nice Ming!

I sent you a PM.

Gary
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Old Aug 23, 2012, 01:14 PM
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Old Aug 23, 2012, 01:40 PM
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Nice, this is a need to have
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Old Aug 23, 2012, 01:47 PM
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Hey its a mini Arson fan! 18 blades max with blade plugs for running fewer blades. Even the blade shape looks similiar. Y'all had the same idea at the same time...cool! I want one of these...its a good size. Can't wait for the 5 incher
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Old Aug 23, 2012, 01:54 PM
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