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Jan 17, 2004, 08:09 PM
Thread OP

mega 16/15/3 w/ kyosho fan ??


will the kyosho(t-33) fan handle a lithium 4s2p irate cell pack(14.8volts) and the mega 16/15/3.
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Jan 17, 2004, 09:09 PM
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GAANDAHL's Avatar
I don't know about the cells, but the 16/15/3 has given my T-33 a new lease on life!
George
Jan 17, 2004, 11:21 PM
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Larry Dudeck's Avatar
The 3 wind with an MF480, 11 cells, draws about 26-28 amps.

The Ky fan loads the motor more than the MF480 so current draw will be higher. Mega's literature indicate a current limit of 30 amps. I think you will really stress the motor at 14.8 v.
Jan 18, 2004, 01:48 AM
Senior Member
sguty's Avatar
My calcs say 40A, 500W, which is at or beyond the limits of the fan and motor, and close to a 10C draw if you're talking about the Irate 2200s.
Suspect you'd be happier with a Minifan 480, at least from the perspective of not shedding blades, you'd still be pulling ~37A/460W, which is asking a lot from the Mega.
Jan 18, 2004, 01:58 PM
Thread OP
thanks Guys I had a feeling that I might have to go with a different setup. my mega 3t has handled 40amps in small bursts so well that I hoped maybe It could handle the pain. will have to start saving
Jan 19, 2004, 10:14 AM
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Larry Dudeck's Avatar
My homegrown spread sheet predicts 36 amps

You could probably use this set up provided you stay away from full throttle..yea, right
Jan 19, 2004, 10:29 AM
Registered User
It'll melt the motor.

10 2600's which provide about 11 volts is in the low 30 amp range, that is the max the motor should be asked to take. 4S will not work.
Jan 19, 2004, 10:58 AM
Thread OP
I've been flying with a 16/15/3 on a pusher prop setup pulling 36-40 full throttle with no problems and no melted motors. is there something different with the ducted fans that doesn't allow the motor to cool. now all my pusher setups are done in such a way that the motor is completely in the air stream. when she comes down after a flight the motor isn't warm at all to the touch
p.s. what would be a good brushless that can handle say 40-60 amps and should I keep the kyosho fan??
thanks for all the help
Last edited by finchero; Jan 19, 2004 at 11:04 AM.
Jan 19, 2004, 12:13 PM
Registered User
3S is about = to 10 regular cells

Plug it into moto calc. If it draws 36 amps on 3S it will draw 57 amps on 4S.

Nothing different, you can't put 500-600 watts though a 2.7 ounce motor on any sort of continious power basis.
Jan 19, 2004, 02:18 PM
Thread OP
chris what motor would you recommend for 4s pulling between 40-50 amps. something priced closed to the mega would be best $$$
Jan 19, 2004, 02:31 PM
Registered User
None, those fans shed blades fairly regularly over 400 watts.
Jan 19, 2004, 02:53 PM
Thanks Wilber and Orville !.
sonic liner's Avatar
I am running a mega 16/15/3 on my kfv1000 jet on ten cpr
1300 cells. Watt meter said 300 watts 23 amps using a c.c.
30 amp esc. Thats almost one half horsepower and she was
raidared at 73 m.p.h. in level flight........plenty fast. Hope this
helps. Sonic
Jan 20, 2004, 04:35 AM
Registered User
kushal_22's Avatar
Quote:
Originally posted by finchero
I've been flying with a 16/15/3 on a pusher prop setup pulling 36-40 full throttle with no problems and no melted motors. is there something different with the ducted fans that doesn't allow the motor to cool. now all my pusher setups are done in such a way that the motor is completely in the air stream. when she comes down after a flight the motor isn't warm at all to the touch
p.s. what would be a good brushless that can handle say 40-60 amps and should I keep the kyosho fan??
thanks for all the help

Ditto for me(Or at least This is what I have been told i am Pulling for AMPS) I am Using 10 and 11 1950 FAUP Cells with a Vario 5.6x5 Prop on my Projeti I rarley run under 2/3rds throttle unless it is shut right off...WHich i do alot of as i like to do "Skip and go`s" . I too was thinking of using that setup. But it looks like it is just too much.

MAl


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