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Old Sep 17, 2003, 11:21 AM
MSDP
Daegu, Korea (South)
Joined Jul 2001
279 Posts
Build Log
RFFS-100 2cell Ultimate bipe

Hi, all. This is my new project on 2cell modified RFFS-100(Matt's way). It has two handmade 60ohm aileron actuators. She flies very well and has lots of power. Have a good time!

Specification

Wing span : 328mm(12.9")
AUW : 56g(with 2cell 210mAh Li-Poly)
RX : 2cell modified RFFS-100
Actuator : Handmade 60ohm x 3(two for aileron, one for elevator)
Motor : GWS B2C 6.2:1 gearing
Prop : GWS EP7060

short flying video - loop, roll and etc.(1 min 14 sec, 2.5MB)

long flying video - roll and etc.(3 min 57 sec, 6.7MB)
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Last edited by jjkwang; Feb 03, 2006 at 07:18 AM.
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Old Sep 17, 2003, 11:23 AM
MSDP
Daegu, Korea (South)
Joined Jul 2001
279 Posts
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Old Sep 17, 2003, 11:28 AM
MSDP
Daegu, Korea (South)
Joined Jul 2001
279 Posts
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Old Sep 17, 2003, 11:30 AM
MSDP
Daegu, Korea (South)
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Old Sep 17, 2003, 11:31 AM
MSDP
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Old Sep 17, 2003, 11:32 AM
MSDP
Daegu, Korea (South)
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Old Sep 17, 2003, 11:33 AM
MSDP
Daegu, Korea (South)
Joined Jul 2001
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Old Sep 17, 2003, 11:36 AM
MSDP
Daegu, Korea (South)
Joined Jul 2001
279 Posts
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Old Sep 17, 2003, 12:50 PM
What Canary?
KeithK's Avatar
Huntsville, AL USA
Joined Jul 2000
1,743 Posts
JJKWANG,

Very nice work. Do you know what current the motor is pulling?

Thanks,
Keith
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Old Sep 17, 2003, 01:22 PM
Gravity is a harsh mistress.
Tim Wolff's Avatar
United States, MI, Temperance
Joined Sep 2002
6,605 Posts
I'd also like to know how suitable that GWS motor is for RFFS airframes.

Nice job BTW.
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Old Sep 17, 2003, 04:19 PM
in persuit of low wing loading
Gordon Johnson's Avatar
Boston, Mass
Joined May 2001
6,437 Posts
JJ,
That is very nice. I think you have the 2-cell RFFS combination down very well now. You have another winner here.

Tiberius,
I think the GWS motor he's using is essentially a N20, which is about right for that weight and size plane on two cells.

Gordon
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Old Sep 17, 2003, 07:00 PM
MSDP
Daegu, Korea (South)
Joined Jul 2001
279 Posts
Thank you for kind words and interest. Keith and Tiberius, I hope below link helps you(You can find the B2C data table on bottom of the page). The GWS B2C motor is similar to the hi-volt N20, but it has carbon brush.

GWS LPS B2C Motor Data

Thanks,
Jae-Kwang
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Old Sep 17, 2003, 08:40 PM
Gravity is a harsh mistress.
Tim Wolff's Avatar
United States, MI, Temperance
Joined Sep 2002
6,605 Posts
Thanks guys. The M20, N20, HV, LV, UHV combinations still confuse me. The B2C would only be suitable for 2 cell applications. The RLC motor looks ok for 1 cell use, but that amp draw is too high for the RFFS, right?
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Old Sep 17, 2003, 10:06 PM
Who Says Penguins Can't Fly?
aeropenguin's Avatar
Bay Area, California
Joined Jan 2003
2,713 Posts
LV=low voltage
HV=high voltage
UHV = never heard of this - maybe ultra high voltage?
N20 = M20 lookalike, a little less powerful as I understand.
M20 = that's what the KP00 uses, that's what an E-charger motor essentially is (slightly different windings)
M20-HV is the most powerful of them all, and it can be run on one or two cells.
-Michael
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Old Sep 17, 2003, 10:35 PM
MSDP
Daegu, Korea (South)
Joined Jul 2001
279 Posts
Hello, Michael. How have you been getting along? Thanks for advice.

Tiberius, Yes, the RLC motor draws too much amps. This motor is not suitable for the RFFS-100.

Jae-Kwang
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Last edited by jjkwang; Sep 23, 2003 at 12:13 PM.
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