KPR003H
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Wind Raider
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NF
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waw.... mesin di atas sayap.....mmmmmm seperti pesawat angkut russia buatan antonov...... good good, very beautiful and good craftmanship.... 
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iwan21
- Administrator
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Atau bisa juga propeler di kecilin aja, misal pake ukuran 5x3 supaya beban batere bekurang...karena dg ukuran segini dan 2 motor 380 sangat over prop dg prop Cessna yg 7x4...
Terus terang utk wing dg airfoil seperti ini, thrust yg dibutuhkan cuma sekitar 40-50 % aja (TWR 0.45 : 1 udah cukup, artinya kalo berat body total/AUW 735 gr, maka cuma perlu thrust sekitar 350gr utk airborne....)....
Satu lagi, karena ini twin motor set-up dg arah putaran prop yg searah, efek torque roll akan terasa banget.....umumnya pake contra rotating (Putaran prop kiri dan kanan berlawanan, jadi satu pake prop normal, satunya lagi pake prop pusher) utk menghilangkan efek tsb
Terus terang utk wing dg airfoil seperti ini, thrust yg dibutuhkan cuma sekitar 40-50 % aja (TWR 0.45 : 1 udah cukup, artinya kalo berat body total/AUW 735 gr, maka cuma perlu thrust sekitar 350gr utk airborne....)....
Satu lagi, karena ini twin motor set-up dg arah putaran prop yg searah, efek torque roll akan terasa banget.....umumnya pake contra rotating (Putaran prop kiri dan kanan berlawanan, jadi satu pake prop normal, satunya lagi pake prop pusher) utk menghilangkan efek tsb
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Wind Raider
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jedx
- Technical Sergeant
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iwan21
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jedx
- Technical Sergeant
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Wind Raider
- FOUNDER
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iwan21
- Administrator
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Saya kutip dari RCGroups :
[QUOTE=Dr Kiwi]I cannot fathom how a Speed 400 can direct drive a 9x4.3 - I've tested Speed 400's and on 8-cells they drew 15A or more with only a 6x3. :confused:
A Park Jet running a 6x5.5 draws close to 20A with a 3s Lipo. A bit less on 8-cells, but your wimpy 750mAh 8-cell won't cut the mustard.[/QUOTE]
Kalo direct drive 6x3 aja konsumsinya 15 amp, apalagi 7x4 ex Cessna...makanya baterenya jadi panas..karena itu propnya dikecilin lagi seperti saya tulis diatas , yatiu coba dulu dg prop 5x3..
Atau seperti saran suhu Darwin, ganti dg EPS-350 gear aja....., prop bisa pake 8x4 aja...
[QUOTE=Dr Kiwi]I cannot fathom how a Speed 400 can direct drive a 9x4.3 - I've tested Speed 400's and on 8-cells they drew 15A or more with only a 6x3. :confused:
A Park Jet running a 6x5.5 draws close to 20A with a 3s Lipo. A bit less on 8-cells, but your wimpy 750mAh 8-cell won't cut the mustard.[/QUOTE]
Kalo direct drive 6x3 aja konsumsinya 15 amp, apalagi 7x4 ex Cessna...makanya baterenya jadi panas..karena itu propnya dikecilin lagi seperti saya tulis diatas , yatiu coba dulu dg prop 5x3..
Atau seperti saran suhu Darwin, ganti dg EPS-350 gear aja....., prop bisa pake 8x4 aja...
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Bozo
- Airman
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kucing wrote:dah siap utk test, cuma ada kendala mungkin saya bisa dpt masukan dari pakar2x di forum ini...
kendalanya adalah batery panas setelah satu menit(kira2x throtlle 1/2), apakah krn motor terlalu besar..????
spesifikasi
1. panjang 84 cm
2. berat total 735 gram
3. batery lippo 1050mah, 15c 11,1v
4. propeller aslinya cessna
5. motor 480(asli cessna) 2 buah
6. esc art-tech(asli cessna) 2 buah
7. 2 servo aileron ama elevator tanpa ruder...
mungkin bisa kasih saran....terima kasih
Ini sih udah kualitas GWS....hebat ...luar biasa....