Posting this to remind me of the specs and possible combinations.

Motor: TURNIGY 50-65A 400kv Outrunner
Specifications:
Model : TR50-65A-400
Input Voltage : 14.8V~29.6V (4~8S Li-po)
Kv : 400 rpm/V �} within 10%
Current capacity : 60A/60s
Dimensions : 50mm X 65mm / 1.97in X 2.68in
Shaft diameter : 8mm / 0.31in
Weight with cables : 414g / 14.60oz
Number of poles/magnets : 14
Recommended model weight : 3000~4500g / 100~200oz
Power equivalent : .50 to .72 glow engine

My first choice for a a ESC was a TURNIGY K-Force 70A-HV OPTO Brushl,
but it has literally toasted on the first run, ok second choice of ESC:

TURNIGY Plush 80A w/ UBEC Speed Controller
Specification:
Cont Current: 80A
Burst Current: 90A
UBEC Mode: 3A/5v out
Voltage Range: 5.6v ~ 26v
Weight: 91g
Size: 88x31x14mm


Use HIGH timing, 6s 4400 lipo, 15x8 or 16x8

15x8 APCe, 6s 4000 Flightmax lipos, HK SS60-70 esc, 46-47amps, 1050watts

Proctor 1/6th Camel, Plush 80, 4s 4400 lipo, 16x12 Zinger (standard timing)
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Alien/EMP/Turnigy C80-100 130kv
Model: HXT80-100-B
Wire Turns: 8
Resistance: 32ohm
Idle Current: 2A
ESC Required: 130A
Input Voltage : max. 48V
Kv : 130 rpm/V
Weight: 1570g
Shaft: 12mm
Voltage Range: 20-48v
Non Load Current: 2.0A
Maximum Power: 6500W
Equivalent: 60-80cc Gas Engine

IT'S A MONSTER ....! ... The largest electric motor we have ever had! Model: EMP 80-100/06; Weight:...Continue Reading

56in wingspan
Engine: Up to 61 engine; recommended .60 with 14x5 prop
Throws:
- Aileron: 40 deg.
- Rudder: 25 deg.
- Elevator: 25 deg.
- CG Rear Limit is marked 4in 5/8 behind the leading edge of the upper wing. Plain indicates that CG is best 1/2" behind leading edge of lower wing

Linked thread: https://www.rcgroups.com/forums/show....php?t=2005960