D&D Motor Systems is the premier go kart electric motor manufacturer
in the U.S. for electric go karts. Our electric go kart motors offer higher performance than the pancake motors that are out there.
Our electric go kart motor has: higher torque, better thermal capabilities and a competitive price. In addition, we offer a U.S.
made go cart speed controller to go with our go kart motors. Go cart motors at a cost you can afford! We also carry the largest
selection of buggy motors.
Description: This motor is perfect for a go kart design/ project that entails using a smaller go kart in size and performance which is typical for a recreational application. This series motor makes it easy to design and interchange controllers and not have to worry about proper field mapping on the controller so it will work most effectively with the motor.
Description: This motor is perfect for a go Kart design/project that entails using a full size go Kart(500 lbs+) and looking for higher performance. This series motor makes it easy to design and interchange controllers and not have to worry about proper field mapping on the controller so it will work most effectively with the motor.
Description: This motor is good for an extremely high performance racing cart or a mid sized dune buggy. This series motor makes it easy to design and interchange controllers and not have to worry about proper field mapping on the controller so it will work most effectively with the motor.
What it is: The maximum horsepower the motor can produce for a
short duration (usually
seconds to a few minutes).
Use Case: Useful during acceleration, startup, or when extra torque is temporarily
needed (like in go-
karts, e-bikes, or heavy-duty machinery).
Limitation: Not sustainable for long periods—pushing the motor at peak power for too
long can overheat or damage it.
Continuous Duty Horsepower (HP)
What it is: The maximum horsepower the motor can safely produce
continuously without overheating or degrading performance.
Use Case: This is the reliable, everyday power the motor can deliver during extended
operation—important for systems that run for long periods.
Rated Conditions: Usually based on ambient temperature, cooling, and duty cycle
assumptions
(e.g., 40°C ambient, proper ventilation).
Analogy
Think of it like your own strength:
Peak HP is like lifting something heavy for a few seconds.
Continuous HP is what you can lift repeatedly or hold for an hour without tiring or
hurting yourself.
Summary
For ourPeak HP rating, we use 335 Amp as the current draw amount when presenting the data.
For ourContinuous HP rating, we use 100 Amp as the current draw amount when presenting the
data.
Pro Tip
If you're selecting a motor for an application (like your go-kart project), always size the motor based on
the continuous horsepower for sustained performance—and ensure your controller and battery can
handle the
peak load for bursts when needed.
When converting a gas car to electric using 72, 96, 120, or 144 volts, the total
amp-hour (Ah) capacity of
the battery pack will vary depending on your goals for range, performance, weight, and budget.
🔋 Step 1: Assumptions and Inputs (Typical Battery Capacities)
Battery Type
Voltage
Typical Ah
Usable %
Usable Energy (kWh)
Lead Acid
72V
150 Ah
50%
5.4 kWh
Lead Acid
96V
150 Ah
50%
7.2 kWh
Lead Acid
120V
150 Ah
50%
9.0 kWh
Lead Acid
144V
150 Ah
50%
10.8 kWh
Lithium
72V
100 Ah
90%
6.5 kWh
Lithium
96V
100 Ah
90%
8.6 kWh
Lithium
120V
100 Ah
90%
10.8 kWh
Lithium
144V
100 Ah
90%
13.0 kWh
⚡ Step 2: Energy Consumption (Wh/mile)
We'll base this on the following assumptions:
Vehicle weight: 2000 lbs
Gear ratio: 3:1
Tire size: 19"
Speed (mph)
Estimated Energy Use (Wh/mile)
Driving Conditions
30–40 mph
250–300 Wh/mile
Urban / City
50–60 mph
350–400 Wh/mile
Suburban / Mixed
65–75 mph
400–500+ Wh/mile
Highway
💡 For general-use estimation, use 300 Wh/mile as an average energy consumption value.
Here’s your complete breakdown of estimated usable energy, range, and top speed for the D&D
170-015-0004 motor at 72V, 96V, 120V, and 144V, using both lead acid and
lithium batteries:
Using power curves and wheel data:
Motor Max RPM @ each voltage (from performance data)
Gear Ratio: 3:1
Tire Diameter: 19" → Circumference ≈ 59.7 in ≈ 1.516 m
🔼 Top Speed increases slightly with voltage: from ~71 to ~73 mph
🔋 Range increases significantly with higher voltage & lithium batteries (due to better
usable energy)
Voltage (V)
Battery Type
Amp-Hours
Usable Energy (kWh)
Est. Range (miles)
Est. Top Speed (mph)
72
Lead Acid
150
5.4
7.2
70.9
96
Lead Acid
150
7.2
9.6
71.7
120
Lead Acid
150
9.0
12.0
72.6
144
Lead Acid
150
10.8
14.4
73.4
72
Lithium
100
6.48
8.6
70.9
96
Lithium
100
8.64
11.5
71.7
120
Lithium
100
10.8
14.4
72.6
144
Lithium
100
12.96
17.3
73.4
Note: These values are estimates based on test data and standard conditions.
Real-world performance will vary with terrain, driving habits, regenerative braking, and payload.
When converting a gas car to electric using 72 volts, the total amp-hour (Ah)
capacity of the battery pack
will vary depending on your goals for range, performance, weight, and budget.
For Lead-Acid Battery Packs (72V):
Configuration: Usually made with 6x 12V deep-cycle batteries in series
Typical battery types: Flooded lead-acid (FLA) or sealed AGM/gel
Amp-Hour Range (per battery): Commonly 100–200 Ah (at 20-hour rate)
Total Pack Rating: 72V @ 100–150 Ah is typical. That equals 7.2 to 10.8 kWh of usable
energy
(but lead-acid should only be discharged to ~50% to avoid damage)
Vehicle Speed vs. Motor RPM: Considering a 19" tire, 3:1 gear ratio, and motor RPM from
test
data
Energy Consumption (Wh/mile): Based on rolling resistance, aerodynamic drag, and motor
efficiency
Real-World Range Estimation: For both lead-acid and lithium battery setups
Estimated Energy Use vs Speed:
At 30–40 mph: Energy usage is around 250–300 Wh/mile, which is efficient for a street-legal
EV.
At 55–60 mph: Energy usage rises to 350+ Wh/mile due to aerodynamic drag becoming dominant.
Motor Efficiency (~80%+): Helps maintain lower Wh/mile at midrange speeds.
Estimated Ranges (Recap):
Battery Pack Usable kWh
Est. Range @ 250 Wh/mile
@ 300 Wh/mile
@ 350 Wh/mile
Lead-Acid (72V 100Ah)
~14 miles
~12 miles
~10 miles
Lead-Acid (72V 150Ah)
~21 miles
~18 miles
~15 miles
Lithium (72V 100Ah)
~30 miles
~25 miles
~21 miles
Lithium (72V 150Ah)
~44 miles
~37 miles
~31 miles
Note: Variables such as hills, stop-start traffic, or regen braking will affect performance. These
estimates provide a good understanding of approximate performance under typical conditions.