My Sacura will only go at full speed
- Thread starter jokemor
- Start date
D
Deleted member 4366
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Common problem: The controller is past it's sell-by date. Unless you know how to check, unsolder and replace FETs, you need a new controller.
D
Deleted member 4366
Guest
36V/250W speed controller for E bike & scooter (brush | eBay
If you could take a photo and/or give a written explanation of the connections to the controller. I Could give a more accurate assessment of which one you need. E-crazyman above has a good reputation. You should e-mail him to ask if he can supply the controller with a pedal sensor connector. I believe he can. This one will probably give a little more power than the one you already have. Unless you use the specific sakura controller, you might have to solder/ change a few wires/connectors. Please say whether you have that capability.
If you could take a photo and/or give a written explanation of the connections to the controller. I Could give a more accurate assessment of which one you need. E-crazyman above has a good reputation. You should e-mail him to ask if he can supply the controller with a pedal sensor connector. I believe he can. This one will probably give a little more power than the one you already have. Unless you use the specific sakura controller, you might have to solder/ change a few wires/connectors. Please say whether you have that capability.
D
Deleted member 4366
Guest
36V/250W speed controller for E bike & scooter (brush | eBay
If you could take a photo and/or give a written explanation of the connections to the controller. I Could give a more accurate assessment of which one you need. E-crazyman above has a good reputation. You should e-mail him to ask if he can supply the controller with a pedal sensor connector. I believe he can. This one will probably give a little more power than the one you already have. Unless you use the specific sakura controller, you might have to solder/ change a few wires/connectors. Please say whether you have that capability.
If you could take a photo and/or give a written explanation of the connections to the controller. I Could give a more accurate assessment of which one you need. E-crazyman above has a good reputation. You should e-mail him to ask if he can supply the controller with a pedal sensor connector. I believe he can. This one will probably give a little more power than the one you already have. Unless you use the specific sakura controller, you might have to solder/ change a few wires/connectors. Please say whether you have that capability.
D
Deleted member 4366
Guest
Sorry, before condemming the controller, there's a couple of tests to do to confirm that the problem is in the controller itself. I had wrongly assumed that you knew where the controller was and had disconnected the throttle at that end.
You need to follow the throttle wire down, and it will lead you to the controller. You need to unplug it there and see if it still goes at full speed as soon as you switch it on. If you can, do the same with the oedal sensor. If it still runs at full speed, you need a new controller. If it doesn't, it could be the throttle.
You need to follow the throttle wire down, and it will lead you to the controller. You need to unplug it there and see if it still goes at full speed as soon as you switch it on. If you can, do the same with the oedal sensor. If it still runs at full speed, you need a new controller. If it doesn't, it could be the throttle.
Throttle cable
Hi, thanks again, been away hence the delay. I have followed the throttle cable down into the housing across the handle bars. The cable ends with a small plug that is connected to a block inside this housing. I unplugged this but the bike still went flat out. Hope you understand this.
Hi, thanks again, been away hence the delay. I have followed the throttle cable down into the housing across the handle bars. The cable ends with a small plug that is connected to a block inside this housing. I unplugged this but the bike still went flat out. Hope you understand this.
I've read elsewhere that putting the key in and turning it backwards releases the whole battery pack from the frame, so the controller almost certainly won't be inside there.
Following the cable path in the photo below indicates that the second option I gave for it's location is correct, inside the cowling at the base, just ahead of the pedal crank:
Following the cable path in the photo below indicates that the second option I gave for it's location is correct, inside the cowling at the base, just ahead of the pedal crank:
D
Deleted member 4366
Guest
In that case you need a new controller - or someone that can test/fix your present one for nothing. The problem is likely to be blown FET/s
Hi, back from hols, I have stripped the crank cowling and found a component covered in black plastic for protection, it has 5 wires: Red, Brown, Orange, Black and White. The wires are attached to a white connector that also has another two wires that are connected to a capacitor about 2" long. Is this the controller? my guess is that it is, and is the capacitor standard? Regards, John
D
Deleted member 4366
Guest
Does your bike have indicators? If so, that might be the components that make them flash. The controller is normally an aluminium box about 100x50x25mm with lots of wires attached.
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