- Built to ROAR/EFRA/IFMAR specifications
- CNC-machined lightweight can
- Aluminum end cap
- Lightweight design
- Low-resistance, silver-plated solder tabs
- Optimized air cooling
- Dual precision stainless steel ball bearings
- Balanced rotor
- High-strength magnet
- Adjustable timing
- Completely rebuildable
Internally, the 540-M4 is very similar to that of the 540-M3 that it replaces. The inner bearing has been moved so that it is now part of the can instead of the sensor assembly, which more precisely aligns the rotor within the magnetic field while reducing noise and vibration.
Externally, the motor has been shortened, for a more centralized weight distribution within the chassis. The reduced length, combined with improvements to the can design, results in a 5-10g reduction in weight.
A variety of optional rotors are available to fine-tune for specific applications and tracks.
|Bushing Or Bearing||Bearing|
|Outer Diameter||1.4 in (35.9mm)|
|Overall Length||1.98 in (50.3mm)|
|Product Weight||5.6-6.00 oz (160-170g)|
|Shaft Diameter||0.12 in (3.15mm)|