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Kt controllers work with any hub motors with the same julet 9 pin motor connector, the 9 pin wire sequence is a wired to a universal sequence and all hubs I have tried have worked. My bafang cst & g370 both work perfectly with KT's. The moulded battery connection isn't common and is used on oem...

The BMS has failed draining two parallel groups down to 0v or very low voltage, so 12 cells have been killed. At this point not knowing how predictable the other cells or BMS will react it is best practice to place the battery somewhere where it can do no harm to the household occupants. Cells...

The original 07e would have been motor hall sensor failure and will still be the situation, having now replaced the controller 01e means Comm's failure or incompatibility. Any setting up/pairing items may be dealer programming. Even if one was to clear 01e, the system when communicating will...

Gearing will have to be played with both front and rear, one can change the front chainring possibly if using a modern BB or spider and the rear play with sprocket sizes if using for inclines. Ulitmately you are going to have to sacrifice speed for lower gearing most likely for an easier ride...

I would opt for 44 or 48v if possible , the former means usally a bespoke or home welded/mad pack. A heavy motor like a BPM is 4.4kg so one has to think about how much weight on the front, ideally it needs a good steel fork then one shouldn't need torque arms, other wise opt for may be an AKM...

A good example of a very good hub which I use for my Roadrat and towing a laden trailer (up to 90kg) is the Bafang G370, it has a fairly high two step gear ratio and is 36v 201rpm rated so about 16/16.5mph at 700c. I run it at both 36 & 44v but not for the speed but the unpowered ability, I...

Ok we are all up for learning. Even mid drives suffer much the same with the speed limit unless they are dongled , one has to use gearing to to go beyond the cut off. With hubs one has to choose the given rpm for the speed one wishes to cycle at but then hill climbing ability is affected unless...

The RD5 is for 135mm OLN/drop out size yours is shy by 20mm, certainly one wouldn't spread the drop out on such an aged bike. The X-RD3 70mm or 90mm drum version is for 117.5/118 mm OLN so one will be ok with just 2.5/3 mm stretching. One will have to settle for 3 spd with drum to keep the...

One will get a small torque increase but doubt one will notice it that much, it will equate to approx. 9% increase. But that isn't what you asked about. One seem fixated on the speed issue, it is small wheels so except the legal speed or simply pedal harder or increase gearing to over come the...

Out in the burbs I see little in the way of other cycles out and about.

And all that lovely patina with it too ;), seriously with the rust seen in places it is in retrospect I think agood idea to strip it back to check conditon esp as it is planned to be put back in to serious use. One will need to check the rear wheel hub bearings if keeping the same wheel and the...

Bosh bike shops are no good at fault finding even the bosh bikes they sell they can't repair them, all they do is order a new part and swap it out. Even a monkey can do that. One supsects it is simply down to the control system (not a very good one ) used on your bike and a poor battery. Though...

Problem with that bike and the control system used (speed control) is they are power hungry and demand near 100% power all the time, so any battery will be stressed more then other systems. In asssit 1 -3 one gets max power but the speed limit is preset in each level. I can understand the older...

No, current doesn't increase speed, you need voltage & more of it. If your controller is dual voltage a 3s battery in series will give a boost of speed.

The controller is small metal box, a PCB that control's the commands via signals to the motor and pedal assist. It is either intergrated in the battery base holder or is a seperate item hosued on th bike somewhere. If one follows the battery or motor cable they both lead to the controller...

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Head set certainly not seen grease for a very long while, one should leave at least 1 ball space or even two and severely pack it out with grease. Two missing balls will allow for more grease to sit in the cups.

Two in parallel should be enough then it gives affectively a 6 parallel set up with double the capacity. Several aren't needed each battery will have 30 cells.

2 weeks or there abouts is good from China, it is all down to how well it comes thru customs.

The bike will use speed control I expect and this means it will use max current all the time. The controller current rating may not be suitable for the battery ? Or the controller could be faulty, it is the controller that determines how much power to draw and nothing to do with the hub motor...