Spektrum PowerSafe AR12120 User Manual page 4

EN
The following setup is shown as a worst-case scenario indicative of some
aerobatic pilots' setups. It is not recommended to use this setup without proper
voltage regulation for your servos.
Airplane 40% YAK
Servos 9-JR8711' s 1-8317 (throttle)
Batteries Two 4000mAh 2-cell 7.4-volt Li-Pos
Regulator None
Engine DA150
Weight 40 lb
Flight envelope Aggressive 3D
Average current 2.62 amps
Peak current 17.8 amps
Milliamps (used per 10-minute flight) 435mAh
JR8711' s and 8317' s are rated at a maximum of 6-volt 5-cell use. Using higher
voltages will void the warranty.
File: JasonNoll.FDR Session:All Sessions
0 50 100 150 200
In the example above, the average current was 2.62 amps, which calculates to
435mAh per 10 minutes (typical flight length). It' s recommended that only 60% of
the available capacity be used to ensure plenty of reserve battery capacity. In this
example using two 4000mAh batteries (8000mAh total capacity) x 60%= 4800mAh
(available usable capacity) divided by the capacity used per 10-minute flight,
435mAh would allow up to 11 flights, of 10 minutes each.
250 300 350 400 450
Seconds
PackAmps_A: Min 0.00 Max 17.80 Avg 2.62
6
Milliamps (used per 10-minute flight) 137mAh
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17
16
15
14
13
12
11
10
9
8
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7
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Recommended Guidelines for Battery Capacity
3
40-45% Aerobatic aircraft w/ 9-12 high-current servos: 4000–8000mAh
2
1
33-35% Aerobatic aircraft w/ 7-10 high-current servos: 3000–6000mAh
0
25% Quarter Scale Aerobatic aircraft w/ 5-7 high-current servos: 2000–4000mAh
Jets - BVM Super BANDIT, F86, Euro Sport, etc.: 3000–6000mAh
Giant-Scale Jets - BVM Ultra Bandit:4000–8000mAh
Scale aircraft - The varieties of scale aircraft and the accessories they use vary
tremendously, making it difficult to give capacity recommendations for these types
of aircraft. Using the previously mentioned aerobatic guidelines relative to the size
and number of servos used will provide a conservative capacity for your scale
aircraft. As always, check battery charge condition before each flight.
Airplane 33% Sukhoi
Servos 7-JR8611' s 1-8317 (throttle)
Batteries 1- 4000mAh 2-cell 7.4-volt LiPo
Regulator 6 volts
Engine DA100
Weight 26 lb
Flight envelope Moderate 3D
Average current .82 amps
Peak current 6.92 amps
File: sukhio Session:All Sessions
150 200 250 300 350
Seconds
PackAmps_A: Min 0.00 Max 6.92 Avg 0.82
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EN
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
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