Hacker E-Series Brushless Motors
E3-37 3700Kv & E3-49 4900Kv
Features:
• Precision engineered in Germany by proven World Champions
• Specifically designed for use with Li-Po batteries (2S-3S/1200-1320mAh)
• Combines ultra-high power & super-efficient design
• High-rpm 2-pole construction
• Built-in heatsink for extreme environments
• Fits into most GWS & E-flite™ gearboxes
• Ideal for park flyers, miniature helis and Team Losi’s Mini-T™
Hacker’s Precision Engineering Is Competition-Proven
• 3-Time FAI F5D World Champion (2004, 2002, 2000)
• 2004 FAI F3A U.S. National Champion
• 2004 FAI F3A European National Champion
E3-37 (ELFL3000) Specifications: E3-49 (EFLM3005) Specifications:
Diameter: 24mm (.95 in) Diameter: 24mm (.95 in)
Length: 36mm (1.4 in) Length: 36mm (1.4 in)
Weight: 48 g (1.7 oz) Weight: 48 g (1.7 oz)
Shaft Diameter: 2mm (.08 in) Shaft Diameter: 2mm (.08 in)
Continuous Amps: 7A* Continuous Amps: 7A*
Peak Amps: 12A* Peak Amps: 12A*
Kv: 3700 rpm/v Kv: 4900 rpm/v
Io: .9A @7.2V (no load current) Io: 1.4A @7.2V (no load current)
Ri: .23 ohms (resistance) Ri: .15 ohms (resistance)
Cells: 6-10 Ni-Cd/Ni-Mh, 2-3 Li-Po Cells: 6-10 Ni-Cd/Ni-Mh, 2-3 Li-Po
* Maximum Operating Temperature: 220 degrees Fahrenheit
* Adequate cooling is required for all motor operation at maximum current levels.
* Maximum Peak Current duration is 30 seconds. Adequate time between maximum peak intervals is required.
Requires 12-20A brushless ESC. We recommend E-flite’s 20-Amp Brushless ESC (EFLA311).
Installation of Pinion Gear & Gearbox:
For installation into a gearbox, it will be necessary for you to purchase and then install a pinion on the shaft.
A 10 Tooth pinion is for use with an E-flite (EFLM221) or GWS ‘D’ gearbox with 6.6:1 gear ratios. A gearbox with a 6.6:1 ratio has a 66 Tooth spur gear
on the gearbox and the motor uses a 10 Tooth pinion gear installed on the shaft. A 12 Tooth pinion is for use with an E-flite (EFLM216) or GWS ‘C’
gearbox with 5.33:1 gear ratios. A gearbox with a 5.33:1 ratio has a 64 Tooth spur gear on the gearbox and the motor uses a 12 Tooth pinion gear
installed on the shaft. Other gearboxes may vary by ratio depending on the number of teeth on the spur gear and pinion gear.
When installing motors into an E-flite or GWS gearbox, it is very important that your gear mesh is correct and the gear’s mesh is smooth with no binding.
The E-flite gearbox features adjustable slotted mounting holes so that you can ensure your gear mesh is correct. Remember, if your mesh is too loose
or too tight, it may strip the gears. One suggestion may be to insert the polybag included with the motor or a small piece of paper in between the pinion
and spur gear as you are installing them. Tighten and secure the screws to the gearbox. Always make sure the screws are long enough so they have
properly seated into the motor. You can easily pull the polybag or paper out by rotating the shaft until it comes out. Be certain to check the mesh at
multiple points on the spur gear before finalizing the motor mounting position in the gearbox. To extend the life of your gearbox, we also recommend
using a small amount of grease, such as lithium grease, on the spur gear.
Once a pinion is installed on the shaft, it will be necessary to remove the pinion from the motor shaft if you want to use the motor with a different gearbox
than the ones specified above. The gear mesh will bind and the motor will not operate properly if you have incorrect gear ratios. We recommend using
a gear puller for this step for the safest removal of the pinion gear. Never reuse a pinion gear that has been removed from a shaft.
Installing Pinion Gear
1. Align pinion on end of shaft and press fit using a vise for proper installation.
2. Support the aft bearing and shaft using a small hardwood block to prevent both from separating from the case.
3. Be careful you do not crimp the motor wires in the process and make sure they are safely out of the way.
Removing Pinion Gear
1. To remove the pinion gear, it is recommended to always use a gear puller to prevent damage to the pinion and shaft. We recommend the E-
flite Pinion Puller (EFLA212).
(2 pages)
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