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Old Mar 03, 2010, 07:26 PM
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Jimmy Yucca's Avatar
Arleta, California
Joined Aug 2009
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What power setup should I use for the index 2.2? I can't decide if I should use a higher kv motor with a 2 cell or a lower kv motor with a three cell. Also what kind of propellers do you guys use SF or DD?
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Old Mar 03, 2010, 11:05 PM
F3P and Sailplanes-Great!
RayPB's Avatar
S.E. Minnesota
Joined Jun 2007
414 Posts
Quote:
Originally Posted by Jimmy Yucca View Post
What power setup should I use for the index 2.2? I can't decide if I should use a higher kv motor with a 2 cell or a lower kv motor with a three cell. Also what kind of propellers do you guys use SF or DD?
You might want to review the Index 2 thread for ideas

I have flown the Index 2.2 and the Index 3. I use a Hacker A10-15S with a GWS 8x4.3 prop and 350mAH batteries. I am very pleased with this combination.

While I like both planes, I think the Index 3 flies better than the Index 2.2.

Ray
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Old Mar 05, 2010, 09:01 PM
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Jimmy Yucca's Avatar
Arleta, California
Joined Aug 2009
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Thanks for the help Ray. Are you running a 2 cell or 3 cell 350 on the Index 3?
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Old Mar 05, 2010, 11:58 PM
F3P and Sailplanes-Great!
RayPB's Avatar
S.E. Minnesota
Joined Jun 2007
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Quote:
Originally Posted by Jimmy Yucca View Post
Thanks for the help Ray. Are you running a 2 cell or 3 cell 350 on the Index 3?
I'm running a 2 cell. I don't think the A10-15S will handle 3 cells.

Ray
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Old Mar 06, 2010, 06:24 AM
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Aio_1's Avatar
Ireland, Kildare, Leixlip
Joined May 2002
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Hi Jimmy,

I'd agree with Ray. 2 cells on a motor like the Hacker A10-15s works well.
I don't think 3s has any real advantages for these planes.
2s has a few advantages I can think of:
  • more suitable motors to choose from
  • more cell options without ending up overweight (3s would have to be 250mAh or less to stay on target)
  • Typically Cheaper packs with 2 cells rather than 3
  • can use direct 2s voltage to some servos for additional speed and torque

Aidan
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Old Mar 06, 2010, 09:36 AM
Joined Nov 2004
241 Posts
I am 2S fan too, even on higher cellings.

By the way, I have build my first serious F3P. It is Cirrus' inspired, a little different on wing, devices and stucture but Cirrus' inspired 142g with Rhino 360 2S.
The model uses Nano Cyclon motor prototype I bought on early 2006 in the USA, I think they changed thinks a little as my motor draws a bit more Amp than it should (2.2A average for F3P sequence) and has not the same pull as the new ones. More pictures here: http://aeromodelando.blogspot.com/search/label/F3P sorry for the text in portuguese...
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Old Mar 06, 2010, 05:24 PM
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Jimmy Yucca's Avatar
Arleta, California
Joined Aug 2009
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I was thinking of using one of these two motors on a 2 cell 360. Which one do you guys think is better for the Index 3?

http://www.hobbycity.com/hobbyking/s...50kv_%2815g%29

http://www.hobbycity.com/hobbyking/s...00kv_%2814g%29
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Old Mar 06, 2010, 05:55 PM
I don't want to "Switch Now"
pmackenzie's Avatar
Toronto (Don Mills), Canada
Joined Dec 2002
16,712 Posts
I would try this one, poor man's AXI 2203:

http://www.hobbycity.com/hobbyking/s..._19g_Outrunner

Pat MacKenzie
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Old Mar 06, 2010, 06:27 PM
Joined Nov 2004
241 Posts
Excelent motor for the money. I use on my 3D model, good pull, draws little amps but 5g heavier than I would like it to be. Maybe this 5g (and of course other parameters) costs the difference betwen a Neu and the chinese one...
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Old Mar 06, 2010, 06:51 PM
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United States, CA, Los Angeles
Joined Nov 2006
228 Posts
Hi Jimmy,

I'd stay away from the two motors you show on your post. I tried the 2024 from the same series and it wasn't as powerful as the specs lead me to believe. It was adequate for the Osiris/Deluxe V3 hybrid I had it on, but it was only a couple of grams lighter than a stock 2204-14T and had far less power. You also have to make some thin rings to go into the GWS prop hubs to make them fit properly. The 2204-14T is a great motor for the price and will take your Index vertical with ease. It really is a poor mans Axi 2203 as the previous post said. My 2204's have taken some big hits from vertical crashes and so far have not been damaged. You can save a couple grams by lightening the motor face and replacing the steel shaft with carbon tube. You only save about 2 grams. This photo is of one I modified in my cnc mill, but you could do a similar job with careful use of a Dremel. You can find many motors lighter than the Turnigy 2204-14T, but they'll typically cost 3 - 6 times as much. I like my more expensive, lighter weight and better quality motors, but I rarely risk them in models where I'll be learning new maneuvers. I'd much rather take a chance of crashing a $10 usd motor than a $60 usd one. I build copies of my F3P kits to practice with before I fly the models from kits. It makes my kit models last a lot longer.

Michael
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Old Mar 06, 2010, 08:31 PM
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Joined Oct 2009
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hi i'm kinda new to posting but have been lurking around the forum so I am wondering if anybody has built the snoopylution and how you did it cause the calypso has tabs and I don't know if it is a must for bracing or not to be interlocking or just glued on the surface
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Old Mar 10, 2010, 10:57 PM
Love the sport, not the plane
Hawaii
Joined Oct 2009
1,231 Posts
Here is my micro version of the 6th Version 4. 14" span with AR6400L and 2 aileron servos as well as APO5 brushless motor and Thunder Bird 6 with 2s 240mah 20C batt. 50g AUW.
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Old Mar 13, 2010, 05:00 AM
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TamiyaCowboy's Avatar
Norwich, England
Joined Jan 2010
589 Posts
here's my first ever F3P foamie build.

morback micro:

fuse length: 17 inch
wing span :16.5 inch
airframe weight: 20 grams

i sued the morback 32 inch plan and resized via printer. cut and made from 4mm foamboard, still midway into build.
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Old Mar 13, 2010, 11:35 PM
Love the sport, not the plane
Hawaii
Joined Oct 2009
1,231 Posts
Great! I am going to do the 4-D mid engine version of the morback once I am done with my bipe. I started a thread for doing a micro variable pitch prop. Are you going to use an AR6400? What gear?
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Old Mar 15, 2010, 09:06 AM
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Norwich, England
Joined Jan 2010
589 Posts
Quote:
Originally Posted by dylantorquerol View Post
Great! I am going to do the 4-D mid engine version of the morback once I am done with my bipe. I started a thread for doing a micro variable pitch prop. Are you going to use an AR6400? What gear?
i dont know to be very honest. i built plane thinking old AeroAce parts will work but coming in at 22.0 grams and thrust from motors at 10.6 gram, i can see the morback just gliding and not flying.

i looked on internet and noticed a picooz 6mm motor running stock gearing and main rotor @3.7v will produce 14+ gram thrust.

at this time i am looking to maybe koyosho/ITC/PZ power systems. whatever comes my way cheapest.
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