Help! Pro-Rider Hub motor issue

Nick G

Finding my (electric) wheels
Jun 10, 2020
7
0
I am looking for any help or advice regarding an issue with the hub motor on a Pro-Rider E-Tourer. The drive has failed. The electic motor is turning but not the wheel. I have tried contacting Prorider Leisure but no response yet. I'm planning to open up the hub unit to see whats going on inside so any tips or advice will be greatfully recieved. Thanks
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
21,021
8,593
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West Sx RH
The clutch planetary gears might be damaged, under what circumstances did the drive cease ?
Show some motor pics to see what you have got.
There is usually an axle nut to undo on the LHS which also keeps the bearing seal in place, once removed the RHS face plate needs removing. It will have either faces plates screws to remove on the outer edge or it will have a screwed face covering to undo AC/W.
 

Nick G

Finding my (electric) wheels
Jun 10, 2020
7
0
The clutch planetary gears might be damaged, under what circumstances did the drive cease ?
Show some motor pics to see what you have got.
There is usually an axle nut to undo on the LHS which also keeps the bearing seal in place, once removed the RHS face plate needs removing. It will have either faces plates screws to remove on the outer edge or it will have a screwed face covering to undo AC/W.
Thanks for that. The drive failed when out on a ride and setting off after stopping on an incline . I am actually in the process of stripping it down. Before I started I tried it again and to my surprise it seems to be working fine ??? But I decided to investigate anyway. I have the rhs cover (with the sprocket) off and the 3 outer gears look ok but I can't see the centre one as it is behind the bearing and plate holding the 3 outer gears so I assume I need to open up the other side or would I be better trying to remove this plate ? I can post some photos later. Thanks again for your help
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
21,021
8,593
61
West Sx RH
Always post pics as it helps.
On an incline if in the wrong gear the clutch could possibly slip if one of the clutch springs on the rear jammed or the motor stalled/slipped.
 

Nick G

Finding my (electric) wheels
Jun 10, 2020
7
0
An update. Put the hub back together and greased up the gear wheels. I couldn't see how to get the motor out of the housing so decided to leave well alone rather than doing any damage. Bike ran ok for about half a mile but then same issue. Whilst pedalling manually home I turned the controller on and it worked for a short time and then cut out again. Happened a couple of times on the way back. Once home the issue was also intermittent with the bike on the stand. I wonder if it could be a wiring issue as the road for the test ride is quite bumpy. The bit that really puzzles me though is the sound of what I assume is the motor spinning without driving the wheel. I exposed the motor contoller which has some signs of corrosion and a number of the wiring connections are wrapped in diy looking insulation tape. Currently the motor is driving the wheel ok. My plan is to check all the connections tomorrow. Interesting what you say about being in too high a gear on the incline though. As my knowledge of these motors is very limited and bearing in mind your comment about clutch springs can the motor spin but not drive the wheel due to worn or sticky springs within the motor. Thanks again for your help and excuse my ignorance.
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
21,021
8,593
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West Sx RH
We don't know what the sound is unless you record it for us.
 

Nick G

Finding my (electric) wheels
Jun 10, 2020
7
0
We don't know what the sound is unless you record it for us.
Fair point. Had another test ride this morning after checking all the electrical connections by the motor controller. Worked fine for about 500 yards then same issue going up a slight incline. As you can see / hear in the video it sounds like the motor is spinning but no drive to wheel. You may also notice the occasional slight movement of the wheel. Tried to upload the video but the file is too large. Went back to bike to record a shorter one but now it's working again. It's also raining hard now so another ride and likely breakdown will have to wait for better weather
 

Nick G

Finding my (electric) wheels
Jun 10, 2020
7
0
After further investigation I can only think that the one way bearing of the planetary gears is worn. I have emailed Pro-rider to see if they can supply a replacement but can anyone suggest alternative suppliers of these parts as I have struggled to get any response from Pro-Rider previously. In cas my terminology is wrong I have attached photos of the part in question. Thanks in advance for any help.
 

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Nick G

Finding my (electric) wheels
Jun 10, 2020
7
0
It has been a while since my last post as I have been trying to source a replacement bearing. Eventually got one from China and fitted this weekend. All seemed fine until I took the bike off the stand and once again same problem, motor spinning but no drive so clearly not the bearing. After much head scratching I was about to return the bike to the shed but I turn it off and back on again on the handlebar controller and hey presto it worked.

Conclusion then it has to be electrical and I assume the sound of the motor spinning is that it is spinning backwards. This is where I need some help. I am thinking the dc motor controller could be faulty and intermittently driving the motor backwards. I am therefore thinking to replace the dc controller.

A quick internet search shows many available but I could do with some advice on reputable sellers and equivalent parts if I can find the exact part number.

Any help or advice on the issue or dc controller suppliers would be greatly appreciated. Thanks.
Nick.
 

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vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,993
Basildon
You can tell whether its spinning backwards by lifting the wheel off the ground to see which direction it turns. Confirm that first before going any further.

There's a key on the centre gear that I've heard of failing on a couple of motors, so check that if your motor goes forward.

I've never heard of a motor spontaneously change direction while switched on. It needs completely different timing, so the only way it can happen is if the controller has reversing built into it. In that case there would be a pair of wires that you bridge to change direction.
 

Nick G

Finding my (electric) wheels
Jun 10, 2020
7
0
Thanks for your reply and advice. The controller is capable of driving the motor in reverse as far as I know. Also if my thinking is correct the wheel won't rotate when / if the motor is running in reverse as the oneway bearing comes in to effect as it does when the bike freewheels.
If a new controller can be obtained at a reasonable price then I think it would be worth a try.
 

vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,993
Basildon
Thanks for your reply and advice. The controller is capable of driving the motor in reverse as far as I know. Also if my thinking is correct the wheel won't rotate when / if the motor is running in reverse as the oneway bearing comes in to effect as it does when the bike freewheels.
If a new controller can be obtained at a reasonable price then I think it would be worth a try.
It will. Try it instead or theorising. It always gets me that people would rather wasting time writing crap like that than testing the bike to get the answer, which would take less time than the writing.
 
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