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Old Nov 16, 2010, 12:48 AM
Extreme CNC Alloy EDF
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Australia
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Thats a nice balance, so you are around 1300 watts or so?? That fan is a little inefficient but still performs really well in the A4, obviously the model does not need crazy power, a nice Midifan setup with 6s and 2.5-2.7kg thrust will be lovely. A hot 6s 3.5kg setup would also be interesting

Kin what is the inside diameter of your intake ducting? And is the exhaust duct a sheet of plastic film supplied in the kits or a glass duct?
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Old Nov 16, 2010, 01:17 PM
kin
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Quote:
Originally Posted by Extreme_RC View Post
Thats a nice balance, so you are around 1300 watts or so?? That fan is a little inefficient but still performs really well in the A4, obviously the model does not need crazy power, a nice Midifan setup with 6s and 2.5-2.7kg thrust will be lovely. A hot 6s 3.5kg setup would also be interesting

Kin what is the inside diameter of your intake ducting? And is the exhaust duct a sheet of plastic film supplied in the kits or a glass duct?
is a plastic film . you can roll the size you like but the mix diameter is 68mm
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Old Nov 16, 2010, 03:34 PM
Extreme CNC Alloy EDF
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Australia
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68mm?? Do you mean the exhaust outlet?

I was asking about the inlet ducting, where your fan fits, what is the actual ID of the inlet ducting, or the OD of your fan housing?
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Old Nov 16, 2010, 04:58 PM
My dremel tool has no fear
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Reston, VA
Joined Dec 1999
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Kin

great job on the A4 I think it will be very popular.

the Jepe spiderfan that was designed for it(carbon) had a built in inlet lip (lander style), that is why your fan fit with the intake lip on.

I think the change sun fan is pretty good, it is slightly smaller than the typical 90 fan (1-2mm) the housing and rotor are stiffer than a midi
it has 5 blades vs 6 for the midi but the blades are wide and cover a lot of the swept area

I got 6 1/2 lbs on 6S 4200 with an ARC36-65-1 at just under 1800 watts
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Old Nov 16, 2010, 05:40 PM
Extreme CNC Alloy EDF
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Australia
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The midi rotor is reinforced and actually very strong, with the 3665 we get around 3.5kg thrust at 2200 watts on 6s. I would like to see airspeed too, the topgun Mirage 2000 does 135mph with this setup in it, havent seen any speed figures yet for the changesun at around 2200w.
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Old Nov 16, 2010, 06:07 PM
My dremel tool has no fear
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Reston, VA
Joined Dec 1999
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we don't have enough info on what this fan does in the air

most of the videos have been in draggy foam models

the mirage is a faster model than most foamy's

everyone knows the midi is good and that it is reinforced
I have a midi, the change sun housing is thicker and is made of very stiff material. I don't say it is better, but at 20-30 bucks properly set up it pretty good

it is also softer than the midi and so it gives you an option of a little less amps than a midi with the same motor

6s is 80amps w/36-65-1 changesun

6s 100+ amps in midi w/36-65-1

this is the first video of a nice clean jet I have seen with this fan and it looks very good

Kin

please post more video when you fix your flutter issue
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Old Nov 16, 2010, 08:24 PM
Never fly an A model anything!
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Antarctica
Joined Apr 2008
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I love this little A4. It is a good size and good price and although it was designed to be bungeed and fly light, I like the retract option too. I just cant buy it given my domestic deal that I can only replace models in the fleet and not add due to storage restrictions. Hmmmm.
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Old Nov 16, 2010, 08:28 PM
Global Hobby Store
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J... let me know if i can help

I still have the web address for PODS....
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Old Nov 16, 2010, 08:47 PM
Never fly an A model anything!
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My Wife got me a storage shed but between the models and the car engines I am hopping/working on, doesn't leave much space.
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Old Nov 17, 2010, 11:43 AM
kin
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Quote:
Originally Posted by Mark View Post
we don't have enough info on what this fan does in the air

most of the videos have been in draggy foam models

the mirage is a faster model than most foamy's

everyone knows the midi is good and that it is reinforced
I have a midi, the change sun housing is thicker and is made of very stiff material. I don't say it is better, but at 20-30 bucks properly set up it pretty good

it is also softer than the midi and so it gives you an option of a little less amps than a midi with the same motor

6s is 80amps w/36-65-1 changesun

6s 100+ amps in midi w/36-65-1

this is the first video of a nice clean jet I have seen with this fan and it looks very good

Kin

please post more video when you fix your flutter issue
The change sun fan have a inlet lip , it prefect fit the JEPE ducting . no need any glue ! i have no glue it , the ducting also 89-90mm (the last part near by the fan ) , so it is more than enough for the change sun fan ,i am use a normal 30c 3200mah . after landing the battery are warm only , so the fan not much high Amper, i start to building a new one in white colour , i don't like the blue angel and change to a new fuselage , see the photo , i painting this , i like it very much !
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Old Nov 17, 2010, 02:38 PM
Hey Guys, Watch This.......
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USA, TX, El Paso
Joined Dec 2003
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Good looking color scheme.
Mike
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Old Nov 17, 2010, 03:34 PM
Extreme CNC Alloy EDF
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Australia
Joined Mar 2006
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Kin if the inlet ducting is only 89-90mm ID then you might consider adjusting this, the popular 90mm fans are 92mm OD, if they dont fit it will be more limiting to your market, not many like to have to modify ducting etc when building even a complex arf.
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Old Nov 17, 2010, 03:59 PM
Never fly an A model anything!
jayb1rdz's Avatar
Antarctica
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Quote:
Originally Posted by kin View Post
The change sun fan have a inlet lip , it prefect fit the JEPE ducting . no need any glue ! i have no glue it , the ducting also 89-90mm (the last part near by the fan ) , so it is more than enough for the change sun fan ,i am use a normal 30c 3200mah . after landing the battery are warm only , so the fan not much high Amper, i start to building a new one in white colour , i don't like the blue angel and change to a new fuselage , see the photo , i painting this , i like it very much !
I wish you had not posted that picture Kin !!!!1 Now I am going to have to trash a model (or give one to my son) so I can make way for one !!!!
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Old Nov 20, 2010, 11:28 AM
kin
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Quote:
Originally Posted by Extreme_RC View Post
Kin if the inlet ducting is only 89-90mm ID then you might consider adjusting this, the popular 90mm fans are 92mm OD, if they dont fit it will be more limiting to your market, not many like to have to modify ducting etc when building even a complex arf.
ok ! i will see this problem
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Old Nov 20, 2010, 03:39 PM
Never fly an A model anything!
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Antarctica
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Off to the field today to meet my sin for a flight. One way or another there will be some additional space for a Navy Trainer version. J

expected delivery date???
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