Motor controller help

[Jwebb]

I would like to add a motor controller to an electric go kart with the following specs.
24v motor, 2100 rpm, 17 amps, 240 watt, brushed motor.
The car runs between 20 and 30 mph depending on the gearing.
The gearing changes based on the track conditions.
The idea is to complete as many laps as possible in a 90 minute period so battery efficiency is important.
I was looking at the Kelly kds24200e and the Curtis 1204M-4201.
I would like to add a throttle and telemetry.
Are these good controllers and which one should I use?

 

[Functional Artist]

From my experience, a 24V 240W motor is NOT powerful enough to motivate a kart with a full size rider
...especially when geared high enough, to go 20 - 30 MPH

What competition is this for?

I use 48V 1,000W MY-1020 brushed motors, on many of my karts
...& can go 20 - 30 MPH...all day long

While only drawing
...~20A on hard acceleration
...& ~12A while just cruising along

Here is a 48V 1,000W MY-1020 motor & controller kit for ~$125.00
https://www.ebay.com/itm/3885575157...CF4cNcV79awpp97plNi7Qk1Q==|tkp:Bk9SR4qv5MKSZg

Here is a video of Polaris
...one of my Electrathon America racers

 

[Jwebb]

we Are not allowed to deviate from the motor, all cars have to use the same motor.

 

[TT540]

I know this is a dead post, but found it looking up something else. Sounds like GreenPower racing to me.

some tips:
You need something programmable or adjustable so that you can limit the current. Aim for 20 Amps as a max to limit heat in the motor and save on battery.. In rush can spike as high at 60 Amps from a dead start, if not more. Because the motor is small for its application, you have to baby it along if you want to run for the full 90 minutes and not completely kill your batteries. If you can change gearing, don't go to aggressive becuase speed is the enemy.

The motor is a 24 VDC brushed motor, so make sure the controller you find is setup for that and just that. You do not have any other sensors available from that motor. So no speed (RPM) sensor or Hall sensors.

KDS24100E should do it.
Even though it can handle up to 50Amps for a minute, using it this way will hurt your endurance chances. You have a PM Permanent Magnet motor.
Just do some searching or call Kelly to make sure you can limit the current to your motor through their software setting. That range is proportional to the controller's max current. Which means over spec'ing the controller current may hinder your current limiting ability. By going this route, the throttle control will be very custom to your steering wheel setup.

Also focus on rolling resistance reductions: lighter skinnier wheels at max psi, nicer bearings, perfect Toe-In, -5* castor, no camber.