D&D SepEx motor   -Separately Excited-

Sepex motors are almost identical to traditional Series motors except for the way their field is wired and controlled.   Unlike the Series motor who's armature and field windings are wired together in series, the SepEx motors field and armature windings are excited separately by special SepEx controllers that have wire leads to both the armature and the field. Separate control of the armature and field creates distinct advantages over a standard series wound motor, notably adjustable regenerative braking, higher rpm, longer power band, higher efficiency, and easy reversing.

A greater rpm range and higher top speed . Field weakening towards the SepEx motors top end allows for higher motor rpm which allows for a higher top speed on your vehicle.

Higher motor efficiently. The SepEx motor is more efficient than a series motor due to its more efficient use of the field.  

Easy reversing. With a push of a button or flip of a switch The SepEx controller can easily change the direction of the motor by reversing the field.. making cumbersome, out-dated reversing contactors a thing of the past

Regenerative motor Braking   This is one of my favorite features of the SepEx motor.   The Sepex controllers can create very efficient and smooth regenerative braking on the motor by reversing the direction of the field and varying the reversed field's current. This essentially turns the motor into a generator while the vehicle is braking or coasting, and puts that generated power back into the batteries. The sensation feels like compression braking on an Internal Combustion Engine vehicle except smoother. Regenerative braking definitely makes an Electric motorcycle feel more like a motorcycle. Other benefits of regen braking, besides recharging the battery pack
and increasing range (if that wasn't enough), is that it makes steep hill descents easier to manage, as well as saving on brake pads and parts.

These motors are only sold as motor and controller kits, with matching tuned Sepex controllers from, either Alltrax Inc (USA) or Sevcon (England).

D&D Sepex motor   (USA)

Dia. 6.7"........Length 11"........Weight 56Lbs.........Shaft dia. 7/8" W/ 3/16 Keyway

Motor mounting dimensions

Packages and specs

Included Controller	Amps	Voltage range	Peak Horse Power	RPM	Kit price (motor and controller)	$975 is the base price of the motor and controller kit. You will be instructed to confirm controller choice after adding to cart.
Alltrax DCX-300	300 A	24V - 48V	13 hp	3000	$1050
Alltrax DCX -400	400 A	24V - 48V	15 hp	3000	$1150
Alltrax DCX -500	500 A	24V - 48V	16 hp	3000	$1250
Alltrax DCX-600	600 A	24V - 48V	17 hp	3000	$1425
Sevcon PowerPak	425 A	60V - 84V	25 hp	4500	$1525

Sevcon PowerPak Controller

Controller dimensions