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Posted by cmdl | Jun 27, 2016 @ 05:46 PM | 2,331 Views
FMS P-39 Hells Bells from Gearbest - inverted flight at 2:10
p39flight (3 min 45 sec)


Eflite Power 25 1250kv, 2200 4s mah (GForce), 8x8 APC
p-47 thunderbolt jug inverted eights (2 min 53 sec)
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Posted by cmdl | Feb 10, 2016 @ 10:35 AM | 3,452 Views
Motor/ESC/Prop/Servos

Pitch speed

Current increase with voltage increase

Extending lipo<->ESC wires

Keeping same pitch to convert between different bladed props
Keeping same load factor (using diameter squared gives more conservative estimate) to convert between different bladed props

Motor attributes
Prop attributes

JST connectors

95% travel adjust on micro servos

Motor wire gauge 1
Motor wire gauge 2

Servo wire gauge 1
Servo wire gauge 2

Lipos

Store in fridge 1
Store in fridge 2

Do not store long term fully charged (cell thermal runaway is unlikely to occur in a cell at a low SOC, < 50%) 1
Do not store long term fully charged (cell thermal runaway is unlikely to occur in a cell at a low SOC, < 50%) 2
Do not store long term fully charged (cell thermal runaway is unlikely to occur in a cell at a low SOC, < 50%) 3

Charge to 4.15 V/cell 1
Charge to 4.15 V/cell 2
Although optimal charge level is 3.92 V/cell

New lipo break-in

Capacity vs voltage 1
Capacity vs voltage 2

Performance tool
Supporting database for performance tool

Balance plug wiring

No negative impact from charging @ 2C, 3C

Paraboards and harnesses

IR 1
IR 2

Low temperature treatment 1
Low temperature treatment 2

Flight

Always check CG

Watts/lb
Static thrust

Read till post #30 - interaction of throttle & elevator

Wind affects aerodynamics 1
Wind affects aerodynamics 2

1s plane BL conversions

UMX B-25

UM P-51

Using X-Port on AR6400

AR6400 manual

XP-7A manual

Main thread

Current draw data

Don't use the Nano CP X BL

2s Spitfire