GoldenMotor.com Forum
General Category => Magic Pie & Smart Pie Discussions => Topic started by: dhugger on December 17, 2009, 04:23:54 PM
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Hi everyone,
I just finished installing the MP kit on my bike and have noticed close to a 1 second delay from when I pull the brakes to when the regen braking begins to happen. Has anyone else noticed this?
Derek
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I don't own a Pie but I have noticed some delays for a few things in the soft start BLDC controllers I have owned.
I cant think of any reason why other than Its probably programmed into the software and or hardware to avoid current surges over the fets and onto the BMS/batteries.
A lot happens when a controller come into regen.
Acceleration needs to be fully shut down, a reverse phase at the right duty cycle needs to be introduced and feed into the motor.
Its possibly related to soft start. There seems to be a delay on brake switches too.
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hy derek
i olso notised the same 1 sec delay with the reg braking
but wen u get used to the 1 sec its no problem at al
the 1 sec is nice for switching of the cruise control
wat is a little problem is the braking itself ; its to much an wen you brake down from a 40km/h it go's on an off I think there is a current limiting in it
wen you ad a extra battery [7,4v] in series with the main battery the braking get a lot better
and you gain a little more speed
gerrit
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if you don't want the regen braking to slow you from 40 to 20 in 2 sec it is a nice feature because you can pull the brake levers in less than 1 sec and it doesn't activates regen braking, don't know if anyone of you tried this?
conclusion: you can use you're own brakes instead of regen to brake down just a litlle bit, you can also pull it to switch off the cruise control and the wind resistance etc. will slow you down.
hope this helps ;D