New Product! Changesun 90mm Smart Fan - RC Groups
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Aug 23, 2012, 12:42 PM
Ming's Avatar

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
Last edited by Ming; Aug 23, 2012 at 02:03 PM.
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Aug 23, 2012, 12:45 PM
Ming's Avatar
Forgot to mention the sound is even better than the CS 90mm 12 blades fan.
Last edited by Ming; Aug 23, 2012 at 12:55 PM.
Aug 23, 2012, 01:02 PM
Registered User
anlucas's Avatar
Woah!!! This is a fiddlers dream...
Aug 23, 2012, 01:24 PM
Should've, Would've, Could've
v8truckin's Avatar
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
Aug 23, 2012, 01:28 PM
Registered User
erh7771's Avatar
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.
Last edited by erh7771; Aug 24, 2012 at 09:53 AM.
Aug 23, 2012, 01:29 PM
Ming's Avatar
Thank you!
Full technical data will be posted within next few days.
The sound is very nice I can say!

Ming Lou
Aug 23, 2012, 01:38 PM
Should've, Would've, Could've
v8truckin's Avatar
Will pre-order details be avail. @ that time also?
Aug 23, 2012, 01:53 PM
Ming's Avatar
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.

Ming Lou
Aug 23, 2012, 02:06 PM
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SkylineFlyer's Avatar
Aug 23, 2012, 02:12 PM
Should've, Would've, Could've
v8truckin's Avatar
I'll be waiting!!!
Aug 23, 2012, 02:13 PM
efflux RC's Avatar
Very nice Ming!

I sent you a PM.

Latest blog entry: Updated blog - Oct 2017
Aug 23, 2012, 02:14 PM
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Aug 23, 2012, 02:40 PM
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frank40's Avatar
Nice, this is a need to have
Aug 23, 2012, 02:47 PM
world's slowest builder
Air-Jon's Avatar
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! I want one of these...its a good size. Can't wait for the 5 incher
Aug 23, 2012, 02:54 PM
jcdfrd's Avatar
PM sent

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