Want 100volt Programable controller at least 60 amp

[NeilP]

I am mucking around with one of Ian Burts ( Burtie) Timing Advance units for sensor motors.
At the moment I am have a Xlyte 18 FET 4110 72volt 42 amp ( happily running at 100volt ) standard controller.

I cant show any increase in speed using the TA board, although battery current is not limiting. The motor is maxing out at 30 mph with or without any timing advance under load. No load the motor speed goes up to ..50 or 60 mph but as soon as load is applied, the speed does not increase.
This standard Xlyte controller although a EB218 board..is not programable

It has been suggested that the controller could be limiting on phase current, so i need to get a programmable controller to experiment with some more to see if I can get any success with the TA board

Anyone have a spare high current controller that i can run at 100v volt and 65 to 80 battery amps to test out this TA board?
Do not want to spend much as i am only doing this for a bit of fun to see if this TA board will make any difference.

http://www.endless-sphere.com/forums/vi ... 50#p544350

[nebriancent]

just shunt mod your controller....
most controllers i have seen use bat amps to help figure out phase amps
veiw my thread on modifying what the controller reads from the shunt using 4$ worth of parts and have your current easily adjustible using a set screw

[NeilP]

Hi
thanks for the reply, and yes i could just do that if I were just after modding a controller to give more power for a one off build, but I am experimenting with this TA board ( see my link above) and want to be able to set exact limits for phase and battery current independently, if for no better reason than to rule them in or out of the equation of why I can't get this motor to run any faster under load with the TA board.

I would like to be able to up the phase amps while still leaving the battery amps as they are, to see if it is truly the phase amps that are limiting the motor speed



I'll take a look at your thread anyway, I imagine this is the one you mean
viewtopic.php?f=2&t=37068&p=541051#p541051

[Lebowski]

I would like to be able to up the phase amps while still leaving the battery amps as they are, to see if it is truly the phase amps that are limiting the motor speed

From my controller build I know that phase amps determines the max torque at low-rpm
while for higher rpm the phase current will be limitted in order not to exceed the max. battery
current.
Battery current and voltage determine the amount of kW going into the system, therefore
also determine (indirectly) your max. speed.

[NeilP]

So if I understand, what you are saying is that at max speed, if my battery current is not limiting, then it can not be phase current that is limiting? or are you saying the opposite

What I am seeing with the advanced timing, is a minor battery current increase, (from memory) of about 22 amps with zero timing to 25-30 amps with 30 or so degrees of advance. but no speed increase.

Controller current is (according to the label) 40 amp limited.

Under no load the rear wheel spins up with a large % increase, ..would need to check my videos again to know exact figures..but anyhow, the speed increase is very large, but under load on the road, there is no speed increase with timing advance increase, and battery current does not seem to be a limiting factor.

i was wondering if the stock Xlyte controller has a very safe low current limit on phase amps and it is that that is limiting the top speed.

With a programable controller I would be able to paly with these settings..and see if I can mimic the results of the Xlyte controller and then actually increase the phase amps and see if I can achieve an on road speed increase with this little hub motor.

[The Mighty Volt]

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