blue spider scooter

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trevorjsaxby
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blue spider scooter

I have a36 volt blue spider scooter, with the rear wheel off the ground the wheel spins when throttle is applied
When the wheel is put on the ground it stops, I have checked batteries etc but cant find a fault, I have been told it could be the motor or controller but I cant find any way of testing them. The motor has 8 wires coming from it. Help please.
Thanks Trevor

marylandbob
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Re: blue spider scooter

Connect a good voltmeter to the batteries, full charged they should be about 40-42 volts for a 36 volt system, and leave the meter connected while you test the motor. If the voltage drops below 34 volts when activating the motor with the wheel on the ground, your batteries are probably defective or poorly charged.--Bob Curry

Robert M. Curry

marylandbob
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Re: blue spider scooter

If you desire to test your batteries separately, each 12 volt battery should measure about 14 volts right after charging fully. When operating the motor, voltage should be above 11 volts on each 12 volt battery. 3 batteries, at 12 volts each, give 36 volts-(about 42 volts for the set fully charged, and about 31 volts when dead)-----For a 48 volt system, there would be 4 batteries of 12 volts each, with the set measuring about 56 volts fully charged, and about 42 volts when dead.--Bob Curry

Robert M. Curry

trevorjsaxby
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Re: blue spider scooter

Hi Thanks for the info but I have tried new fully charged batteries as well so I can rule thjis out, Is there any way of checking the motor and controller Thanks
Trev

nogaselectric
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Re: blue spider scooter

I will try to help you with some troubleshooting. Let me begin by saying that controllers are usually impossible to test in depth due to the fact that the board inside is usually covered in an epoxy to seal the electronics. The only thing I have ever been ever to check is 5v supply to the throttle and a return voltage that goes back to the controller that will vary depending on the throttle position. Being that your motor is working in the air we can assume that your getting that voltage and its working properly. Lets move on to testing the motor. There are very few components to the hub motors and they are easy to test and even repair. The 8 wires that come from the motor consist of three phase wires and five low voltage wires that connect to the hall sensors inside the motor. The phase wires will be larger than the hall sensor wires. You want to look at the five smaller wires. You should see a green,blue,yellow,black, and red. Place your volt meter on DC 20V. Place the black lead from the volt meter to the small black wire. Now place the red lead from the volt meter to the small blue wire. Now turn the bike on. Turn the back wheel SLOWLY by hand. You should see the voltage go from 0 to 4v back and forth over and over again as you turn the wheel. If you see this happen that hall sensor is good. Now move the red lead from the volt meter to the small green wire and repeat. Same for the small yellow wire. Post what you see and I will respond.

trevorjsaxby
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Re: blue spider scooter

Thanks for the help, I`ve done what you say and the voltage varies between 0 and 5 volts on each of the 3 wires to the hall sensors, when I connect between earth and each of the phase wires I get a reading of 13.95 volts on each, is this correct. Off the ground the wheel is very controllable from a very slow speed to a reading of 32kph on the speedo but when put on the floor it stops, I`m baffled

trevorjsaxby
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Re: blue spider scooter

Hi, Another thing I have just noticed is when the wheel is on the ground and I apply throttle the motor groans and tries to turn the wheel and on the odd occassion the speedo has moved before the motor then cuts out, taking the hand off the throttle and then reapplying throttle induces the same result,Thanks

nogaselectric
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Re: blue spider scooter

In my experience this situation you have explained with a motor that is testing ok means that your controller is defective.

trevorjsaxby
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Re: blue spider scooter

Thanks for the info, sorry I`m a bit slower reposting as I`m having trouble finding a new controller to put on the scooter. Will let you know how I get on, Thanks

trevorjsaxby
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Re: blue spider scooter

Does anyone know how I can test the motor to eliminate this from my problem. I have checked the hall sensors as advised and they check out ok, how do I check that the motor is giving full power and torque, ie is there a way of checking the windings on the motor without stripping out. I thought this might be a good idea to keep me busy while searching for a controller

Jimbo
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Re: blue spider scooter

I will try to help you with some troubleshooting. Let me begin by saying that controllers are usually impossible to test in depth due to the fact that the board inside is usually covered in an epoxy to seal the electronics. The only thing I have ever been ever to check is 5v supply to the throttle and a return voltage that goes back to the controller that will vary depending on the throttle position. Being that your motor is working in the air we can assume that your getting that voltage and its working properly. Lets move on to testing the motor. There are very few components to the hub motors and they are easy to test and even repair. The 8 wires that come from the motor consist of three phase wires and five low voltage wires that connect to the hall sensors inside the motor. The phase wires will be larger than the hall sensor wires. You want to look at the five smaller wires. You should see a green,blue,yellow,black, and red. Place your volt meter on DC 20V. Place the black lead from the volt meter to the small black wire. Now place the red lead from the volt meter to the small blue wire. Now turn the bike on. Turn the back wheel SLOWLY by hand. You should see the voltage go from 0 to 4v back and forth over and over again as you turn the wheel. If you see this happen that hall sensor is good. Now move the red lead from the volt meter to the small green wire and repeat. Same for the small yellow wire. Post what you see and I will respond.

Hi, I hope you dont mind if I post my query here, I have looked all over the internet and this is the closest post I have found which was of any help.

My problem is this, I also have the Blue Spider Electric Scooter, 36V, unfortunatly I am only getting 12Km/h with rear wheel raised at full throttle. I have tested the sensors as described and they are working fine. Batteries have all been checked, I also have a spare new set and they are all fine.

I have stripped the electrical system down to look at it, including the control box, as far as I can see, it seems to be all working fine, the only query I have is on the brown wire from the control box, which then links into the yellow wire has a variable pot resister on it, values are 1 Ohm to 3K Ohm, at 1 Ohm I get the full 12Km/h and at the 3K Ohm I only get 5Km/h.

To explain further;
Are far as I can see, from the control box, I have 4 wires on the same connector, The Brown one with the vari-pot, Red, Purple, Yellow/Green. The Red, Purple and the Yellow/Green have no vari-pot resisters on them, only the Brown wire has a vari-pot.

When I tested them for comparision as far as I could tell, the Yellow/Green wire was about 0 volts, both the Red and Purple wires had about 3 to 4 volts on them and the Brown wire was down in the milli-volts.

The resistance when tested was as follows, the Brown wire was 1 Ohm at zero throttle and went to 6 Ohm at full throttle. Yellow/Green, Red and Purple all had Zero Ohms showing at any throttle setting.

My Question is this; Can I just short out the brown wire ? i.e remove the vari-pot in order to unrestrict my scooter, or will this blow the control box ? any help is appreciated, I have searched on the internet but have not been able to find anything to help.

If you have any other ideas I would also appreciate your opinion,or even a wiring diagram would be helpful.

Many Thanks in advance.

Jimbo.

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