Hi,
I am new to the forum and since two months I am also a first time ebike owner looking for some help. I have ordered a 48v battery to increase the speed on my ebike which is currently running a 36v q100 350w 201rpm in a 26 inch tyre. Having read some of the posts on this topic, I understand that the controller is the key to avoid burning the motor. If someone knowledgeable could comment on the following solutions, I would be very grateful.
I should mention that it is pretty flat where I live, although it is very windy. I am constantly giving the motor full throttle and I also pedal vigorously using a 52-11 teeth setup to achieve maximum speed. I rarely drop below 27 kmh (17 mph) even when climbing hills. Average speed is about 30-35 kmh (18.5-22 mph) depending on how the wind blows.
1. I have opened my current controller on one side to take peek inside and I can distinguish 63v on one of the can shaped things.
Am I right to assume that this must be one of the capacitors? Could there be anything else stamped with 63v than the capacitors? The reason I am asking is that this can shaped thing is lying down instead of standing up as I have seen in pictures of capcitors in controllers.
Since I am currently running a 36v battery with this controller, do I need to worry about the max current of the controller also? Could i determine the max current if I properly opened up the controller and looked at the transistors?
2. I have also considered buying the s-lcd-3 +s12sh (800w 35a) combination and set the controller to halve the current giving me 17,5 amps of max output. Has anyone confirmed that the controller actually succeeds in limiting the current output as advertised? Otherwise I would probably burn the motor pretty quickly.
3. I also understand that you could buy the KU93 or ku123 controllers and file down one of the shunts to decrease max current. I don't see myself doing any soldering on the remaining shunt. Which one would you recommend?
4. Lastly, I have found this 350w 17a 36v/48V compatible controller on ebay
http://www.ebay.com/itm/Brushless-Controller-For-E-bike-Scooter-with-without-Hall-Sensor-36V-48V-350W-/321867901730?hash=item4af0d26b22:g:08gAAOSwKIpV-i4J
The seller has no knowledge on how many mosfets it contains. Do you think this could be a viable option or is it just cheap junk?
I know this is a very long first post, but I did not want to leave anything out. Again, I would really appreciate comments and pros/cons of the different solutions. Other possible solutions are also greatly appreciated.
I am new to the forum and since two months I am also a first time ebike owner looking for some help. I have ordered a 48v battery to increase the speed on my ebike which is currently running a 36v q100 350w 201rpm in a 26 inch tyre. Having read some of the posts on this topic, I understand that the controller is the key to avoid burning the motor. If someone knowledgeable could comment on the following solutions, I would be very grateful.
I should mention that it is pretty flat where I live, although it is very windy. I am constantly giving the motor full throttle and I also pedal vigorously using a 52-11 teeth setup to achieve maximum speed. I rarely drop below 27 kmh (17 mph) even when climbing hills. Average speed is about 30-35 kmh (18.5-22 mph) depending on how the wind blows.
1. I have opened my current controller on one side to take peek inside and I can distinguish 63v on one of the can shaped things.
Am I right to assume that this must be one of the capacitors? Could there be anything else stamped with 63v than the capacitors? The reason I am asking is that this can shaped thing is lying down instead of standing up as I have seen in pictures of capcitors in controllers.
Since I am currently running a 36v battery with this controller, do I need to worry about the max current of the controller also? Could i determine the max current if I properly opened up the controller and looked at the transistors?
2. I have also considered buying the s-lcd-3 +s12sh (800w 35a) combination and set the controller to halve the current giving me 17,5 amps of max output. Has anyone confirmed that the controller actually succeeds in limiting the current output as advertised? Otherwise I would probably burn the motor pretty quickly.
3. I also understand that you could buy the KU93 or ku123 controllers and file down one of the shunts to decrease max current. I don't see myself doing any soldering on the remaining shunt. Which one would you recommend?
4. Lastly, I have found this 350w 17a 36v/48V compatible controller on ebay
http://www.ebay.com/itm/Brushless-Controller-For-E-bike-Scooter-with-without-Hall-Sensor-36V-48V-350W-/321867901730?hash=item4af0d26b22:g:08gAAOSwKIpV-i4J
The seller has no knowledge on how many mosfets it contains. Do you think this could be a viable option or is it just cheap junk?
I know this is a very long first post, but I did not want to leave anything out. Again, I would really appreciate comments and pros/cons of the different solutions. Other possible solutions are also greatly appreciated.
