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Old May 30, 2014, 11:40 AM
Registered User
Vienna, Austria
Joined Apr 2007
2,145 Posts
New Product
90mm 13-blade Supreme Hobbies

I guess that is a new Change Sun fan

RC Castle lists it with a 1500kV outrunner

http://rc-castle.com/shop/product_in...oducts_id=3805
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Last edited by mopetista; May 30, 2014 at 05:23 PM.
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Old May 30, 2014, 09:27 PM
DELTAS RULE
corsair nut's Avatar
tehachapi, CA
Joined Jan 2006
22,853 Posts
man i bet that pulls some amps! those look alot like JF90 blades
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Old May 30, 2014, 09:29 PM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
Joined Apr 2006
21,283 Posts
too many blades for 90mm and 1500 kv ...just say'n
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Old May 31, 2014, 02:25 PM
Its a Condition not Addiction
lashmett75's Avatar
United States, CA, Sunnyvale
Joined Jul 2008
3,019 Posts
humm lets see--

22.2v X1500 = 33000 rpm

they say 93A
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Old May 31, 2014, 03:47 PM
Registered User
Vienna, Austria
Joined Apr 2007
2,145 Posts
could this be a standard sized, single-piece rotor unit?

humm, what do you see in that calculation?

it would have to be a 100% efficient motor with no rpm drop under load.

a good rule of thumb is that the rpm drop roughly reflects the efficiency
(more exact, a motor will have an efficiency no higher than given by (no-load rpm) divided by (rpm under that load))

I would guess that rpm at 3.7 V per cell (reasonable assumption, settled) and 22.2 for the pack would be 22.2 x 1500 x0.75 equals around 25.000

However we don't know if the given kV is correct (it quite often is not), and we don't know the voltage under load to get 93A

The TAFT fan would also draw around 93A on a good 6s pack if I am not mistaken

I really like the TAFT fan because it is light and cheap but has two big drawbacks: Only 35mm motors, and it is bigger in diameter than the typical 90mm fans, so it usually requires some mods to fit

This 13-blade might be a single-piece rotor (anyone with better eyesight has a more qualified opinion, based on the pics or some additional info?) and therefore lighter, and maybe it's closer to the standard size. Difficult to judge if it will take motors with more than 35mm but I guess it does, zooming in on the pics...

cheers
Clemens
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Old Jun 02, 2014, 11:12 AM
Registered User
Vienna, Austria
Joined Apr 2007
2,145 Posts
this might have provided some...

...additional inspiration

(the Jetfan was mentioned before)

hope it sounds better than the Schuebeler HDS
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Old Sep 04, 2014, 12:51 PM
Registered User
Vienna, Austria
Joined Apr 2007
2,145 Posts
stand alone fan unit w/out motor available

http://rc-castle.com/shop/product_in...oducts_id=3820

and

http://x-flight.com.hk/?sp=&p=6&cat2...at0=4&new=&ev=

it would be useful to know what motor diameters are possible in the shroud - didn't find anything

please post if you come across the max motor diameters - thx

Clemens
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Old Sep 04, 2014, 01:12 PM
Official Boat Bum
Eddie P's Avatar
United States, NV, Reno
Joined Mar 2000
7,636 Posts
Why does this think look like a pusher to me? Must be the odd tailcone looking like an inlet bullet and the forward swept rotor blades. Until I saw the rotor at an angle that's what it looked like, plus it would not make sense to not have stators aft of the fan flow. So I guess it's a puller with forward swept rotor blades, and a "spinner looking thing" in place of a traditional light weight low radius tailcone in the exhaust flow. Interesting none the less.
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Old Sep 17, 2014, 02:11 PM
Registered User
Vienna, Austria
Joined Apr 2007
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unboxing the Supreme 13 90mm

^I thought that I might as well order one since I started this thread myself. Quick delivery (and very well wrapped) by RC Castle, as usual (I have good experience with X-Flight as well I would add, another source of this 13-blader)

Mostly good news:
- up to 39mm (inrunners, and slightly smaller outrunners) will fit - so the choice of motors is much better than with the TAFT fan and some others
- outer shroud diameter just a tad bigger than your standard 90mm units (compared it with the Haoye, the fan which comes with the FlyFly kits)
- comes with an intake lip; shroud is very long, but the front portion especially may be cut down, the rotor itself is less deep than, say, the TAFT, so it doesn't need all that plastic in front
- adapter looks like a quality item, 4 grub screws, 10mm diameter

Someone was careful that this new fan would not be compatible with anything that's out there:
It's slightly larger than the standard units, but smaller than the TAFT fan. Also, the collet adapter of the TAFT will not fit here, it's slightly larger in diameter.
The way the spinner rests in a groove in the rotor is similar to the TAFT system however.

I won't be doing tests anytime soon, but I thought I'd share this "unboxing" review, hope it helps others decide if they want to get it or not.

cheers
Clemens
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Old Oct 05, 2014, 10:51 AM
Registered User
Kentucky
Joined Dec 2010
22 Posts
Supreme Hobbies 90mm EDF 1500Kv (13 Blade) For 6S

Any more news on this unit ? Just bought one for a HobbyKing BAe Hawk 90mm.

John
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Old Nov 09, 2014, 07:04 AM
FireHawx
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United States, FL, Jacksonville
Joined Oct 2011
1,340 Posts
Any update or news/numbers on this one. I like the blade shape so I am interested to hear some feedback.
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Old Nov 09, 2014, 12:19 PM
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Joined Oct 2009
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I'm thinking about trying this in a bruce lee jet, for $69 you can't really go wrong.
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Old Nov 09, 2014, 07:07 PM
FireHawx
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United States, FL, Jacksonville
Joined Oct 2011
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Yeah and that comes balanced too.
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Old Nov 10, 2014, 01:16 AM
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United Kingdom, England, Southampton
Joined Oct 2013
1,912 Posts
Quote:
Originally Posted by mopetista View Post
I guess that is a new Change Sun fan

RC Castle lists it with a 1500kV outrunner
NOTE - these are my personal opinions only, I'm not any kind of 'expert' but I do have some experience.

Price - It's too cheap. $69 complete. "If it looks too good to be true it probably is"
And we surely don't think that toy planes in general, or EDFs in particular, are a good way of saving money, do we?

And like Air Sally, I think it's got too many blades. Not just for 6S, but for everything. With this many blades they will interfere with each other. And why so many stators?

The thrust, at 2.9Kg, is nothing special for the 2Kw stated input.

What do I use?
Wemotec MidiFan Evo/Hacker B50-13-XL/9S giving 3.7 Kg thrust
Wemotec MidiFan Evo/HET 650-68-1340/9S giving 3.8 Kg thrust
Aeronaut 2000NG (5 blades)/Hacker E50/11S giving 4.7 Kg thrust
All using Thunder Power 70C cells and OS 1100HV speed controller.
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Old Nov 13, 2014, 11:42 AM
shane
China, Guangdong, Shenzhen
Joined Dec 2013
91 Posts
Nice fan unit Clemens

Here is what I use now,

4250-6S outrunner motor at 90mm EDF with 12 Blades
104A / 3.4kg / 22.2V(6S)
118A / 3.9kg / 24V(6S)

4250-8S outrunner motor
97A / 4.1kg / 8S

4250-12S outrunner motor
96A / 5.1kg / 12S

same weight at 455g(include motor).outrunner motor is very light in weigh.

That can save a lot of weigh for battery my own idea.
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