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Old May 26, 2004, 02:41 PM
Registered User
Sierra Nevada foothills of California
Joined Dec 2003
2 Posts
Modeltech Magic

Motor: Mega 22/45/3
Speed Control: Phoenix 60
Cell type/count: 10 cell GP3300 NiMH
Prop/fan: 11x7 and 13x8
Reduction method and ratio: Direct Drive
Amps: 27A for 11x7; 38A for 13x8
Watts: dunno
RPM: dunno
Weight Read to Fly: 5.1 lbs

On the bench, I measured 7 minutes runtime at full throttle with the 11x7. The 13x8 gave me 5m45s at full throttle on the bench. However, at the field I flew the Magic comfortably at half throttle with the 13x8 for nearly 10 minutes. Almost enough power to hover, but not quite. The 11x7 needed more than 1/2 throttle, and didn't have the necessary thrust to do acrobatics.
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Old Jun 03, 2004, 02:04 PM
jrb
Member
jrb's Avatar
Edina, MN, USA
Joined Oct 1999
11,430 Posts
Model: Carl Goldberg Eagle II ARF
Motor: Jeti Phasor 45-3
Speed Control: Jeti Gold Label 40-3P
Cell type/count: 12xRC2000/P3000
Prop/fan: APC E 12x8
Reduction method and ratio: Direct Drive
Amps: 31
Watts: 406
RPM: 7.7k (calc)
Weight RTF: 6#-13oz (6.8#, 109oz)
Comments, etc.: Very nice trainer performance @ to 2/3s throttle, also quite quiet. Loops and rolls easily, take-off roll is comparable to glow. Built by my friend Rick for his entry into RC; motor installation and RTF details by me. Plenty of power for me as his IP; might go up to an APC E 13x8 if he goes to a glow IP. See video of a Take Off; "zip" file contains a wmv.
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Last edited by jrb; Aug 02, 2004 at 08:48 AM.
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Old Jun 04, 2004, 04:46 AM
Why'd it do that?
Insagor's Avatar
Erin, WI
Joined Mar 2004
508 Posts
Het-RC Yak 480 Brushless

Model: Het-RC Yak
Motor: Cermark Brushless 480
Battery: ThunderPower 3S 2100mAh
Prop: APC SF 8x3.8
ESC: Phoenix 25
RPM: 11200

http://www.geocities.com/mohr_dave/yak.html
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Last edited by Insagor; Jul 13, 2004 at 05:30 PM. Reason: Added link for video
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Old Jun 05, 2004, 09:49 AM
Average User
M Ashmore's Avatar
Bakersfield, California
Joined Aug 2003
1,726 Posts
Model/subject: 60" Spad - Foam Clark Y High Wing, Gutter Pipe Fuse, Coro Tail
Motor: Kyosho Endoplasma
Speed Control: CC Griffin 55
Cell type/count: 3 paralleled 10xKan950
Prop/fan: 11x7 MAS Electric
Reduction method and ratio: Great Planes GD600 3.8:1
Amps: 39 Measured - AF Whattmeter
Watts: 410 Measured - AF Whattmeter
RPM: dunno - need to get a tach
Weight Read to Fly: 5# 4oz.
ROG in 40 feet at 3/4 throttle. 10+ minutes flight time at average 1/2 throttle.
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Old Jun 13, 2004, 10:12 PM
Registered User
irone's Avatar
Arlington, Texas
Joined Mar 2004
335 Posts
Here is something a little different.

Model/subject:A Shock Flier cut out of blue foam

Motor:A small CD Rom motor without ball bearings, re-wound with 10 turns of #24 wire.
It is using the original BLACK magnet ring and is turning an 11 X 4.7 GWS prop, it hovers the plane at half throttle with a 2cell lipo pack pulling 3.5 to 4 amps.

Speed Control:Phoenix 10 brushless

Cell type/count:Lipo 1200ma with 2cells

Prop/fan: 11 X 4.7

Reduction method and ratio: 6.6 to 1
Amps: 3.4 to 4
Watts:
RPM:
Weight Read to Fly: All up 10 oz.

Picture: No pictures available today.

If there is any interest in this combo I post pics and more info.
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Old Jun 18, 2004, 11:52 PM
Destructive testing expert!
Bill Sanford's Avatar
Bemidji, MN
Joined Dec 2003
906 Posts
Hanger 9 Funtana 40
AXI 4130/16
TP 5s3p ; 5700 mah ; 8-10c
CC Phoenix 80
APC 18x8e
17.8 Volts
41 Amps
5760 RPM
Static thrust is 8 lbs 15 oz
Unlimited vertical - MUCHO THRUST!


Kyosho Cub (40 sized)
AXI 4120/14
10 cell GP 3300 pack
CC Phoenix 80
APC 14x10e
10.8 Volts
37 Amps
6000 RPM
Static thrust - Haven't measured yet.
Won't prop hang, but a very good flier...
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Old Jun 19, 2004, 02:06 AM
Average User
M Ashmore's Avatar
Bakersfield, California
Joined Aug 2003
1,726 Posts
Model/subject: JK Aerotech T52
Motor: Kyosho Atomic Force
Speed Control: CC Pegasus-35P
Cell type/count: 8xKan1050, 8xCBP1800, 10xKAN950
Prop/fan: 9x7 MAS
Reduction method and ratio: Great Planes GD600 3.0:1
Amps: 22 Measured - AF Whattmeter
Watts: 187 Measured - AF Whattmeter
RPM: dunno - still need to get a tach
Weight Read to Fly: 38oz.
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Old Jun 19, 2004, 07:14 PM
Tree? That's a Tx weed!
crashsiegel's Avatar
Central Texas
Joined Apr 2003
2,434 Posts
Model/subject: JK Aerotech Big-T
Motor: AXI 4120/14
Speed Control: CC Phoenix 45A
Cell type/count: 12xRC2400 (weak, 6-8 minutes), TP 4S4P 7.8Ah or 8.2Ah (Strong, you get tired before it does)
Prop/fan: 12x8 E (APC or MAS)
Reduction method and ratio: N/A Outrunner
Amps: (using APC 12x8E, measured - AF Whattmeter)
12xRC2400 = 32.2A @ 12.5V
TP 4S4P 8.2Ah (20 flights) = 41.4A @ 14.4V
Watts: (using APC 12x8E, measured - AF Whattmeter)
12xRC2400 = 396W
TP 4S4P 8.2Ah (20 flights) = 589W
RPM: (using APC 12x8E, measured - Globee Tach)
12xRC2400 = 7260 rpm
TP 4S4P 8.2Ah (20 flights) = 8010 rpm
Weight Read to Fly:
12xRC2400 = 107oz
TP 4S4P 8.2Ah (20 flights) = 101oz

An incredible trainer type flyer. 1/2 throttle and it flies well, WOT and it climbs with authority! And very TOUGH. With the lipo pack it will fly longer than you want to. I have not run the a pack down yet (never gotten weak or cutoff - programmed 4S) even after 4 flights on the SAME pack.
Crash
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Old Jun 23, 2004, 01:55 AM
sloping addict
Protocooler's Avatar
France
Joined Feb 2003
1,536 Posts
Home made sailplane, AUW 1870g, 2.27m span
Mega 16/25-3, Maxxon gearbox 4.4:1, Aeronaut 17*13 folder
14 cells Sanyo FAUP 1950
70A ESC and Ubec
about 42 A / 550W input

Goes straight up at about 14 m/s for 2'20 runtime. Lots of climbs. 40 minutes flights on a pack with some aerobatics.
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Old Jun 25, 2004, 12:53 AM
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kennyc's Avatar
Joined Feb 2004
578 Posts
Model/subject: GWS E-STARTER
Motor: Himax 2025 4200
Speed Control: CC phx 25
Cell type/count: Kokam 3S 1500
Prop/fan: APC 9x7.5 SF
Reduction method and ratio: 5.33:1 (GWS 350 C Gear)
Amps:
Watts:
RPM:
Weight Read to Fly: 15Oz All UPz
Comments and links to other forums for more info, video, etc.
Picture
Etc.
great plane to fly! if you are a begginner and have been flying stock... putting this in will give it a whole new life!
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Old Jun 25, 2004, 06:01 AM
Why'd it do that?
Insagor's Avatar
Erin, WI
Joined Mar 2004
508 Posts
Sig Cadet 20 Conversion

Sig Cadet 20 (no modifications for saving weight)
Motor: AXI 2808/24
Battery: Thunder Power 3S 2100mAH
Speed Control: CC Phoenix 35 (overkill)
Prop: 9x4.7 APC SF
RMP: ~8400
Flight time: 15 minutes and counting

Notes: Will add more info for thrust and plane weight shortly. Take-off from grass is <8 Feet
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Old Jun 30, 2004, 12:59 AM
Registered User
Columbus University, Ohio, United States
Joined Jul 2003
142 Posts
Model/subject: GWS TM-400
Motor: Himax 2825-3600
Speed Control: CC35
Cell type/count: Tanic 4s1p2200
Prop/fan: MA 10x6 wood
Reduction method and ratio: Cobri 4.11
Amps: 28 est
Watts: 380 est
RPM: 10k est
Weight Read to Fly: 23.5oz
Comments and links to other forums for more info, video, etc. Heavily reinforced with planks of basswood along both sides and bottom of the fuse. Flies just fine with only 3 cells. Rock solid in moderate winds. Scares my kids.

-David
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Old Jun 30, 2004, 04:28 AM
Account closed
Joined Oct 2002
35,016 Posts
Model/subject: SKY RAIDER MACH-II by THE WORLD MODELS, LTD.
54 inch wing span (Fully Symmetrical wing design)
KYOSHO ENDOPLASMA 16-Turn MOTOR (Timed to the best reverse rotation)
GD-600 Gearbox with the 3.8:1 optional pinion gear.
APC "E" 11 X 8.5 Prop.
MPI Heat Sink, Motor Mount combo.
Great Planes C-50 Brush Motor ESC.
HITEC 555 Dual conversion receiver (Hitec shift)
Using a HITEC Flash 4 Transmitter with 2-model memory.
HITEC HS-85 MG for Aileron set and for elevator & HS-81 for rudder.
8-Cell, GP-3300mAH (Average Flight Duration: 11 minutes with reserve)
@WOT: 34 AMPs & 300 WATTS (ASTRO FLIGHT WATT METER)
Prop Speed: 7100 RPM

Total flight ready weight 70 3/8 oz. or ~ 4.4lbs. (Actual measure value)

http://www.rcgroups.com/forums/showt...4&page=1&pp=10
---------------------------------------------------------------------
This model has great controlled manners, characteristics and I was very comfortable even during my first (maiden) flight. I was flying her and it almost seemed like I have been flying her all along. (Thanks to the high wing Sport model, SKY RAIDER MACH-I)

SKY RAIDER MACH-II turns like if she is on rails and they are crisp and with a controlled look to them without any tail wobble or any other bad habits. Loops are just super and can be as large as you set power to them. She flew for 10 and a half minutes for the maiden and landed with lots of reserve.
----------------------------------------------------------------------
July 13, 2004 UPDATE:
9 minutes and 47 seconds of a static run with an 8-cell, GP-3300mAH, Ni-MH pack and ENDOPLASMA in the GD-600 gearbox with 3.8:1 ratio and the APC "E" 11 X 8.5 prop. ( I still had lots of power reserve )

Measured AMPs (Fresh Battery) @ WOT: 31 AMPs in-rush / 29 AMPs steady.
Measured pack Voltage off the charger: 11.45 Volts - 2 Volts load= 10.45 Volts
10.45 Volts X 29 AMPs = 303 WATTS Actual. Wow!

303 WATTS / 4.4 lbs. = 68.86 WATTS per Lbs. !

Not bad at all for a cheap $125.00 'BRUSH' power setup!
----------------------------------------------------------------------
July 14, 2004 Update:
3 minutes and 10 seconds of a static run with an 10-cell, GP-3300mAH, Ni-MH pack and ENDOPLASMA in the GD-600 gearbox with 3.8:1 ratio and the APC "E" 11 X 8.5 prop.

Measured AMPs (Fresh Battery) @ WOT: 39.6 AMPs in-rush / 39 AMPs steady.
Measured pack Voltage off the charger: 13.9 Volts - 2 Volts load= 11.9 Volts
11.9 Volts X 39 AMPs = 464 WATTS Actual. Wow!

464 WATTS / 4.64 lbs. = 100 WATTS per Lbs. !

Again, not bad at all for a cheap $125.00 'BRUSH' power setup!
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Last edited by guapoman2000; Jul 14, 2004 at 05:27 AM.
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Old Jul 04, 2004, 06:50 PM
Aerobatic Extremist
SharksTooth's Avatar
United States of America For Which We Stand!
Joined Jan 2004
1,346 Posts
Fredy check your PM's. You have mail!

New Power System

Model/subject: GW 45" 330LX
Motor: Lehner 1020/15
Speed Control: Castle Creations Phoenix 25
Cell type/count: Tanic 3s2200
Prop/fan: APC 12x6 Slo Fly
Reduction method and ratio: Cobri 28 GB, 6.33:1 (76T/12T Stainless)
Amps: 25.1
Watts: 228
RPM: Right Around 6000 if memory serves
Weight Ready to Fly: 21 oz
Comments and links to other forums for more info, video, etc.
Picture
Etc.

Picture, and comments will come shortly. Model is brand new!
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Old Jul 13, 2004, 05:51 PM
Why'd it do that?
Insagor's Avatar
Erin, WI
Joined Mar 2004
508 Posts
Sig Cadet 20

Electric conversion
Motor: AXI 2808/24
Battery: TP 2s 2100maH
Controller: Castle Creations Phoenix 35
Prop: 9x4.7 APC SF
RPM: 8800
Flight time: In excess of 20 minutes

Video: http://www.geocities.com/mohr_dave/RCPage.html
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