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« on: January 27, 2020, 07:52:16 PM »
Surjit singh deo
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City: Bhubaneswar
State: Orissa
RC Skills: Beginner
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About looking at sanjay sir models , i choose a ft mighty mini plan and build it using sunboard, the total weight is 382gms.
As recommended i have a tattu 3s 850mah 75c battery.
Could anyone suggest a motor and prop combo for this plane.https://uploads.tapatalk-cdn.com/20200127/a5b73a162685a25d4b4ca9dcc739db79.jpg
Unable to choose a motor , prop combination. please help


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« Reply #1 on: Yesterday at 12:32:36 PM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth



the total weight is 382gms.
As recommended i have a tattu 3s 850mah 75c battery.


Who recommends that battery? What is it's weight?

You should be looking to match these specs:

FT MINI SPEEDSTER
Weight (w/o battery): 4.05 oz (115g)

Center of Gravity: 1.25 - 1.5 inches (44 mm) from leading edge of wing

Control Surface Throws: 16° deflection (elevator/rudder) Expo 25%

Wingspan: 20.75 inches (527 mm)

Recommended Motor: 2480 kv 250 size motor

Recommended Prop: 5 x 3 prop minimum

Recommended ESC: 6 amp minimum

Recommended Battery: 300 - 800 mAH 2s minimum

Recommended Servos: (2) 5 gram servos

FT MINI SCOUT
Weight (w/o battery): 4.05 oz (115g)

Center of Gravity: 2 inches (50 mm) from leading edge of wing

Control Surface Throws: 16° deflection (elevator/rudder) Expo 25%

Wingspan: 24 inches (609 mm)

Recommended Motor: 2480 kv 250 size motor

Recommended Prop: 5 x 3 prop minimum

Recommended ESC: 6 amp minimum

Recommended Battery: 300 - 800 mAH 2s minimum

Recommended Servos: (2) 5 gram servos
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« Reply #2 on: Yesterday at 12:35:55 PM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth



Unless you are building another model in the FT Mighty Mini series. Please specify
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« Reply #3 on: Yesterday at 12:40:52 PM »
Surjit singh deo
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Sir it is ft mighty mini arrow so according to the design this battery was a snug fit.

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« Reply #4 on: Yesterday at 06:20:03 PM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth



FT MIGHTY MINI ARROW SPECS
Weight without battery: 6 oz (170 g)
Center of Gravity: 1.75 inches (44 mm) in front of rear firewall
Control Surface Throws: 12 ˚ deflection (elevator/aileron/rudder) Expo 30%
Wingspan: 29 inches (736 mm)
Recommended Motor: 2300 kv 2204 size motor
Recommended Prop: 6 x 4.5 prop
Recommended ESC: 12 amp minimum
Recommended battery: 800 mAH 2s or 3s
Recommended Servos: (2) 5 gram servos
 

1. Your model is very overweight!
2. Motor/Prop/ESC  specs given
3. A 2S battery weighs 30% less than the same 3S battery! Also, a 75C battery is much heavier than a 20C battery, which, for 12 A max load is all you need (800 mAh)
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« Reply #5 on: Yesterday at 06:25:02 PM »
Surjit singh deo
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Yes sir it is overweight. I have already ordered a 2204 2300kv motor, with a 5 inch prop. I would consider the battery for later on. Thanks sir . Would update you on it.

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« Reply #6 on: Yesterday at 06:40:05 PM »
sanjayrai55
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Good luck  Thumbs Up

Do try to reduce the weight if you can. These FT models are very weight sensitive
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« Reply #7 on: Yesterday at 09:37:30 PM »
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Couldn’t resist sending you this link

http://www.rcindia.org/beginners-zone/indore-bipe-a-model-for-newcomers/
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