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Under what circumstances did it pack in ? Hub motors are generally bullet proof as there is little to go wrong with them.

I sense a sale happening :D.

If it works you can buy me an imaginary pint of malt whisky.

Ok yes the display will supply power via the thumb unit when switched on, remove the bike battery so one can't accidently switch the display on whilst soldering the wires back. In fact tape up each wire separately just in case.

Peter is the bearings man at performance line bearings real name, I don't think he was christened as the bearings man by his mum :D. Bearings man is a name he is affectionally known as on here.

If it is a hub motor then most lbs will not have clue how to diagnose. Motor stall is over current/torque overload to the hub and can cause winding failure if it is prolonged, over current manifests it self as excess heat. Under what circumstances did this occur ? If you find the hub has lost...

It is all logical as the bike is from a german company. we = weib = white. br = braun = brown. gn = grun = green. ge = gelb = yellow. gr = grau = grey. ro = rosa = pink. As I mentioned if any of them short against each other then your bike controller is history as a couple will carry...

Oh dear, what ever you do don't let any of the wires touch each other wise you may well wipe out the controller if it hasn't already done so.

DOT spec fluid is used in cars etc and some push bike brake systems but increasingly mineral oil is used. DOT breaks down quicker then mineral.

All cheap bikes and many decent ones use 9mm drop outs, I doubt you will find any near deep enough. DD hubs have 14mm depth axles so on will often need to file the drop out at least 2.5mm deeper to fit the axle correctly as well as adding a pair of torque arms for safety. If one uses a steel...

Diagnostics needed if a mid drive closed system, imv if they don't have the diagnostics they shouldn't be selling them. It will need sorting before the warranty is up so another dealer with the ability and get the shop to pay for it if a charge is made.

That was a nice scenic off road route GH, no reason not to keep riding the route (or part of) and finding another round robin route to home for general riding. Though you likely also have other routes as well.

Still back to your earlier post, without the battery connected & no power the wheel should still turn and ride as normal in low gears. As I mentioned if the wheel does not turn then one suspects an electrical phase issue. So try the simple test I mentioned and disconnect the motor cable form the...

A KT controller needs a matching display, also they are current control controllers though do have a speed controller setting which needs an lcd to change it. As your hub is only 6 wires you need a controller with the hall sensor block connector, then you should be able to just wire the 3 hall...

With out a battery the wheel should still turn, it sounds like the controller mosfets have blown or a phase wire has shorted. Disconnect the hub motor cable form the controller box, there should be a connector along the rear bike stay on the drive/gear side. If the motor frees up the controller...

Battery might need balancing but if it is old (6/7 years or more) then recycle it, at 41v it sounds pretty good but may just have a cell group out of balance.

The lever should need no adjustment in such a short time. If they use DOT 4 or5 fluid then it can break down and needs replacing other wise air has go it in if the travel is bad.

Kalkhoff are good bikes as long as they don't use the darby gmbh impulse drive, other wise you have little to worry about. My brother has bosh kalkhoff from 2010 and still going though with a new battery.

Nothing new there for me SW, all this has been exposed on ES and the e- cig forums. All it does is confirm that buying generic no name china cells or battery packs is one for fools who like fires.

if it is the electronics a new motor if mechanical the the bearing man is your friend.