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Sounds more like a phase issue then a motor one.

The rim is likely ok if true, not buckled or cracked, look at each eyelet and check for any hair line cracks. If it looks ok then opt for new spokes to rebuild the rim with. Who is going to build the wheel up ? Usually one can remove good spokes and measure them carefully from the centre of...

As long as there was no battery power then two wires touching should be fine, but to be sure which wires touched with what ?

The ebike retailers talk nonsense about spending 2.5k on a folder , reason being is their profit margins are greater on dearer bikes and most know little about hub bikes let alone the mid drive ones they sell. If you need is just for pottering around town /shopping then a sensible sub 1k hub...

Once spokes start breaking then yes it needs a rebuild and best to start from scratch, I have already posted on the rims I use that I am happy with and don't have issues. One has to buy a rim with the same spoke hole count as the motor , so if your motor is 32h then you need a 32h rim , if 36h...

The 21700 celled case will come in about 200g lighter then the 18650 celled case. Only they will know what tboth the batteries actually weigh , maybe they have simply sent the wrong battery . 21700 x 52 cells = approx. 3.56 kg. 18650 x 78 cells = approx. 3.74kg. Case +bms and wiring being...

The pvc shrouds aren't needed they should have been dispensed with and a tri- way insulator shroud as on the other side should have been used. The MT's are supplied with one for each side so heat shrink isn't required. As for testing there is nothing to test unless you think the controller...

Leaving a battery on doesn't dmagae the motor, the controller is in between the battery and motor, the motor needs power from the controller to work. Have you tried disconnecting the brake connecotrs and actually tried to power on the motor ? The only other issue I can se that may have happened...

Yes the unknown is how the owner is using the bike to cause the fault/failure so a repair is not really a component fault but could be down to the user causing the component fault. One needs to ascertain from the user how and when the fault occurs, power level , terrain and speed /cadence ...

Pannasonic are ok , I think those are likely the Tesla ones . I suspect they may be early generation 21700's and likely the ones thatTesla have had issues with. Digging about I see the 18650 2500mah cell as being Luhua , a no name not heard of before.

What motor is used in the fido ?

There are many good motors availabale today and they have got smaller and lighter . I have an front BPM that is a beast also have a rear CST model of the BPM. The Q128C another v.good motor that I don't use much at the mo. The yose hubs look to me like a bafang , again I have one of them and...

I would opt for the down tube battery that uses the 21700 samsung or LG cells , both will be good for a bbs01 . The rear rack battery uses 2500mah 18650 size cells, there is no info on the cell brand , most likely are medicre china cells.

Error 25 error code is a brake sensor issue , so either a sensor fault/magnet fault or a brake not returning to rest position. To test disconnect both brake connectors and then try the motor , if as one expects the motor works connect one brake and test and then the other brake to see which...

Although the 6 fets are rated for up to 20a , it depends on the use and terrain. If hilly then opt for a 22 or 25a 9 fet model.

I have been running KT for several years now without hardly an issue, I upgraded to 9 fet sinewave as found the 6 fet models do suffer from overheat/ thermal cut outs. This happens at slow speed on inclines with max current, not yet seen or had issues using the 9 fet models.

Is there any cable damage at the axle ?

It isn't clear how he acheived it .

Unusual rear cluster set up there Sturmey, cant't say I have seen them in reverse before. What was the reasoning behind it, chainline and gear selection ?

Mine can be heard .