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71
General Discussions / Improve acceleration on EZKontrol 48V BLDC and 5kW Motor
« Last post by Silverfixer on June 22, 2025, 09:39:08 PM »

I purchased the items listed below (plus contactor and cooling system) for an electric conversion of an off road go kart buggy. I have these setup with two 48v liFePo4 batteries, each battery is 32AH and vendor specifies that a single battery can output 200A for 10s and 120A continuously. The go karts top speed is great at about 27 mph but the acceleration is slower than I'd hoped. It seems to take quite a while for the controller to increase the amperage up to the maximum 250A setting limit. Even in sport throttle mode, it doesn't seem to increase the acceleration amperage up to 250a for quite a while.
Are there other controller settings I can adjust to increase the acceleration?
Thank you

EZkontrol 48 Volt Universal BLDC Motor Controller 500 Amps (3-5 KW)
5 KW BLDC Motor Air Cooled 48 Volts
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General Discussions / Re: e-bike with a magic controller
« Last post by Raevin on June 22, 2025, 07:01:46 PM »
Update . The magnets were in pieces when I pulled the stator.
The resolve was to purchase a new 26” wheel and hub and keep the rest as parts.
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General Discussions / Re: Need help setting up 10kw motor and ezkontrol controller for electric buggy
« Last post by Danned on June 17, 2025, 02:31:59 AM »
Hello, just wondering if there has been any progress on getting documentation on the EZKontrol controller programming instructions. I replaced my vec-500 with an EZ48/1200 and am having difficulty figuring out the programming. Aside from self learning mode, is there a doc that can be followed to match the golden motor HPM series 10Kw motor? My motor is turning but not smoothly.
74
Magic Pie & Smart Pie Discussions / Re: Magic pie 5 gone to legal speed setting
« Last post by Timtama1 on June 16, 2025, 10:51:57 PM »
I also added a coulometer to the bike. Could that cause it to reduce speed?
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Magic Pie & Smart Pie Discussions / Magic pie 5 gone to legal speed setting
« Last post by Timtama1 on June 15, 2025, 06:17:39 AM »
Hi, mu Magic Pie 5 was working great for 3 years but I recently connected it to the pc and turned on brake regen. Now it’s stuck on a legal setting of 25km/h any ideas how to reset it?
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General Discussions / Re: e-bike with a magic controller
« Last post by Raevin on May 23, 2025, 12:41:53 AM »
Thanks for the extra info. The motor is totally seized. I have removed the clutch and tri-gears. I freed two of those but one still needs some work. The plate on the cassette side was seized and its freed up now.
The other bearings are stuck solid. They are soaking in penetrating oil. I have attached some pics.
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Magic Pie & Smart Pie Discussions / Re: Potentially upgrading an MPII by implanting an EZ A48400
« Last post by Brzoom on May 22, 2025, 08:08:52 PM »
After watching a teardown https://www.youtube.com/watch?v=S-wjHhTsgww of a similar looking controller, I think I'll chicken out and cut my losses.
78
General Discussions / Re: e-bike with a magic controller
« Last post by Bargo on May 21, 2025, 10:40:42 PM »
if the sensors still have kohms in reading and similar values then I guess you save yourself sometime by not doing it :) but its always better to have new ones as they tend to easily die (but it will be mostly reading in ohms at that point.
 
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Magic Pie & Smart Pie Discussions / Re: Potentially upgrading an MPII by implanting an EZ A48400
« Last post by Bikemad on May 21, 2025, 10:01:53 PM »
Hi andto the forum.

I don't know what's inside the EZ A48400 but I'm guessing it will be too big to fit inside the Pie.

Previous power upgrades for the MPII involved rewiring the motor to use an external Infineon controller. Check out this thread for more information.

Although it may well be possible to use the stator/axle as a ground connection, it is unlikely to help very much if you end up using an external controller, as this would only require a thin ground wire for the Hall Sensors.

Alan
 
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General Discussions / Re: e-bike with a magic controller
« Last post by Raevin on May 21, 2025, 09:29:37 PM »
I think your assessment is right. I will disassemble the motor. Is it worth changing out the hall effect devices while Im in there?
Thanks for the detailed illustration.
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