Turnigy e-drive 4020/08
No. Of cells: 4~7 x Li-Poly
Max. efficiency current: 20-40 A (>78%)
No load current: / 2.1 A
Current capacity: 45A/60s
Dimensions: 40x20 mm
Shaft diameter: 6 mm
Recommended model weight: 2000~4450 g
Recommended prop without gearbox: 13"-15"
14x7 Thin prop with 5S which gives 4250g thrust.
Trainer: up to 4500g
3D: up to 2600g
Eq: .54 IC glow engine
All motors include propeller adapter, connectors and mounting accessories.
Gran motor... potencia enorme!! Excelente versatilidad x precio...
Buena compra.Specs say it brings 520 RPM/V, with 5S battery I barely get 7.000 RPM W/14-7 APC type prop, very poor, hardly pushes my 1,9 kg plane, Im quite dissapointed, because I thought that with a 5S lipo I would do 3D ......with a 14-7 APC type, and 4S hardly pushes 2Kg, I will order 5S batt, and bigger prop to make tests, and publish my results.I have run this motor on my Piper Cub 2.08 Ws. 4.8kg. for many many houers now...Exelent motor..Have 5000Mah 5 cell and 15x8 prop...un motor muy robusto y de poco consumo, estoy muy contento del resultado en mi 3d de dos kilos, un saludo desde espaaMotor de alta perfornance e rendimento, aconselho a todos que queiram fazer comverso de Motor Glow para eltrico, mas no se esquea de comprar tbem baterias com bastante MAh, pois o consumo alto tbem.The prop adapter covers a decent portion of the front air holes. My motor did get quite warm running at 40 Amps with a 5S setup.
Also the aluminum threads on the prop adapter shaft strip easily so don't over tighten......WARNING...
Front prop adapter that screws on with 4 screws only has a 6mm SHAFT!!! far too small, I fear it will snap if throttled up too quick, and the base it is machined up off is 32mm!! heaps of room from mounting screw recesses. UH please have larger shaft made(10mm minimum)!I ordered two e drive 4020/06's and one e-drive 2215/20.
I got the 2215/20 just fine but the two 4020/06's were replaced with two 4020/08's instead, HobbyCity fixed the problem in less than a week! I decided to keep the motors sent and have them refund my 5S packs so I could order 6S instead to make up the lost Kv.
The e-drive motors seem well built. The case is solid and simple as you can see in the picture. You will have to take care when mounting not to block airflow to the holes.
I'm using a Turnigy Plush 80A ESC.
Here are the specs on my 4020/08.
At no load with 11.6V they drew 1.5 Amps and I measured 470.2RPM/V
NOTE: the following are for the 4020/08!
Shaft is 6mm diameter
Shaft collar with set screw is 16mm diamter
Bell collar is ~14mm
Threaded holes are 30mm apart on the side with the wires
Threaded holes are 23.5mm apart on the bell side (NOT 25mm)
Case is 50mm in diameter.
Case length is 42.5 of which the bell is about 31mm.
I rigged up a 6S setup with a 15x8 APC prop. This was too much prop because I was able to hit 40 Amps just a little after half throttle and my batteries were not even fully charged. Very very nice power.
I should be have some more props coming in and I'll post results of those as well.
The motor and esc got a little warm but my temporary mount was blocking some of the air flow to through the motor.
The only problem is I get a small glitch that feels like the ESC is missing a phase at very low throttleMaster Airscrew 13 x 8 3blade prop
4S 23A 370 Watts
5S 32A 620 Watts
Master Airscrew 14 x 7 3 blade prop
4s 27A 450 watts
5S 37A 680 watts
Very poor hardware with this motor and casing is very thin.