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Motor & ESC selection.

Old 04-11-2004, 10:11 PM
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Virgin_Blue
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Default Motor & ESC selection.

Hi,
I'm thinking of building another spirit 2m fuselage to also include a motor etc
I have looked around the forum to get some ideas on what motors/esc/props would be a good start. I have found some info, but not alot...

I am currently looking at one of the Model Motor "MM-AXI-2820-10" motor with the suggested ESC JETI "JES-40-3POPTO-ADV" and a 11x5.5 prop.

Does anyone have any comments on these components and/or manufactures? or suggest others motor, ESC??

Thanks

--
VB
Old 04-12-2004, 02:45 PM
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Tall Paul
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Default RE: Motor & ESC selection.

I don't know the size comparison between AXI and Graupner, but I fly my Spirit with a Speed 600, MPS 3.8:1 box,
Jeti 500 ESC, 8x1700 battery, and a APC 13x10 folder.
Changed to a vee-tail, and added spoilers.. the 3rd one flies quite well.
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Old 04-14-2004, 02:03 PM
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paulcarnes
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Default RE: Motor & ESC selection.

I just finished converting my TT Windstar to a speed 600 with an MPJ 3.33x1 inline gear box turning a 12x10 folder. 7x1300 nicads. First test flight was yesterday and the improvement was very impressive!
Old 05-02-2004, 05:31 PM
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aeajr
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Default RE: Motor & ESC selection.

Don't know your motor combo.

The GP Spectra is the same plane as the Spirit but with a motor.

Spectra
http://www2.towerhobbies.com/cgi-bin...&I=LXADK2&P=ML

T-601 Electrifly motor, folding Prop,

SPECS: Wingspan: 78.5" (1995mm) Wing loading: 10.6 oz/sq ft (32g/sq dm2)
Wing Area: 676 sq in (43.6sq dm2) Weight: 3.1 lb (140g)
If you want to do a Speed 600 type set-up, here are some packages:

These would be packages that use the same components but include various gear boxes. The spectra comes direct drive. I would recommend a geared option with a bigger prop.

Great Planes ElectriFly T-600GD System w/Gear Drive
http://www2.towerhobbies.com/cgi-bin...?&I=LXUB34&P=7


Great Planes ElectriFly T-600GD ESC System w/Gear Drive
http://www2.towerhobbies.com/cgi-bin...?&I=LXUB35&P=7

Great Planes ElectriFly S-600GD System w/Gear Drive and two gear radios
http://www2.towerhobbies.com/cgi-bin...?&I=LXBRN3&P=7
Old 05-03-2004, 10:38 AM
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fritzthecat
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Default RE: Motor & ESC selection.

The Axi 2820/10 is a great, general purpose motor. It works very well in 2m gliders. I had one in my 2m Filip 600 and use two of them now in my Bf-110 twin. It's small, light and doesn't have the hassle and noise of a gearbox. The only caution is that the nose of the glider has to be big enough to route the wires.
The ESC is an excellent match. The prop choice depends on how many cells you are going to run. For 8 cells I went with a 11.5x7 using ~30 amps. For 10 cells a 10x6 (or 11x5.5) is good for the same amps. This prop is also right for use with 3S Lipoly batteries.
Alternatively, the Jeti 30/3 motor, same ESC and a 10x6 prop on 10 cells (11x6 on 8 cells) would work too for 30 amps.
Or the Jeti 15/4 with a 2:1 gearbox, same ESC, 11.5x7 prop and 10 cells (12.5x7 on 8 cells) for 25 amps.

Fritz

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