Electric or motor technie geek advice?

[Scimitar]

If one of the phase wires is shorted to another, it's an electric brake, in effect.

 

[wissy]

i will be setting of in half an hour to work so will see if it happens again..

I turned the wheels to check anything sticking and they moved fine.

What is also odd if the problem was / is the motor is why would the actual dial at front go 'odd' at same time?

if the resistance was the motor then I guess the changes are high something like this will happen again?

if it wasn't the motor causing resistance and wheels turned fine by hand then what else could it be? Actually at the time I think I only turned rear wheel 'backwards' as bike too heavy with bags on for me to lift and turn pedal...

Puzzling.

 

[Electrifying Cycles]

Wissy,
The sensor in the rear wheel needs to be in line with pick up otherwise it will not sense the rotation of the wheel.

Apologies for the delay I was out last night, so sent you an email before I was out and checked when I got back to see if I had a reply to my email, should have checked pedelec forum. In my absence thanks to all for providing Wissy with some help.

In terms of resistance there should be nothing electronically from the motor that offers resistance if the motor is working correctly. Key thing is to check both wheels spin freely so the obvious things are ruled out e.g. brakes catching (which you have already done).

If you could let us know how you get on and if this has resolved the problem, so we can ensure you can continue to have fun on the bike.

I have spoken to FLI who distribute KTM in the UK. They are often in the North Wales area so could come and have a look if you are still experiencing problems. There number is 01457 873 923. Alternatively if the problem persists we would of course collect the bike free of charge and offer a free loan bike.

Kind regards,
David

 

[wissy]

Thought I had updated this but must have imagined it. Anyhow almost the same thing happened again. Went fine to school... Went ver speed bumps fine. Up steep hill fne. Left work end of day fine... All going hunky dorey and over a few speed bumps on return leg fine and then trouble on the very very same speed bump as the day before. now that is idd. That speed bump is 'sharper' than the others.

Anyhow... Assistance went but this time could cycle ok with no resistance. Couldn't see anything obvious and bike assistance was fine again once i got back on. Then dial went off. Then on again. This happened a few times but I was now within 500 metres off home and downhill also.

I am having excellent support from David at Electrifyincycles and we both want to see if the problem can be resolved 'remotely' so am going to test bikeout again over next couple of days to see if ai can spot anything or eliminate some things.

Until yesterday the had been no error codes whatsoever. The bike was left in the lounge (where it lives!) for a few hours and I thought I would switch it on to see how long dial stayed on etc but this time I had an error code... 424 which means communication error among components....

So... Anybody got ideas which components are likely to cause this error so I can do some checking? I have checked batter connection a few times and seems fine.... Error code not showing today when I switchdial. not been on bike today as I had chores etc to do

Still would appreciate a moment of your time to see if you can suggest a couple of things I can check. Would of course rather find the fault at home if possible rather than have to send bike back and all that pullavah ....

Ho de hum.

 

[wissy]

Well not seen the error code since. Took on test drive few minutes ago and the dial simply went out after about 30 seconds or so of edalling and assistance stopped. Switched it on and ok but same thing happened. This happened about four times so I returned home. This time no speed bumps, sensor positioned fine and battery fitted snuggly.

Strange that I only ever so the error code once.
All started with the speed bump... Same speed bump on two different days. On second day the cutting off started happening.

Thing is I cannot see anything else to check. Am I missing something obvious? Getting close now to having to return bike to get fixed which is shame and lots of hassle and expense for ELectrifyinCycles.

Suggestions for anything else I should check??

 

[Artstu]

There's only really the display unit you can check now. All the other connections down by the motor require some disassembly. Sorry I can't be of further help.

 

[103Alex1]

Wissy, it does sound like you've got a loose connection somewhere which possibly happened if you went over the speed hump enthusiastically - especially if it was slightly loose already. Can happen from bikes getting shipped ... and although it makes the bike nice and neat the downside of things being built-in is that sometimes it makes things harder to get at if anything goes wrong.

If the Bosch system is anything like the Impulse there will be a dealer service unit that can be plugged in and a series of structured bench / ride tests carried out to identify and rectify the problem.

These things seem to happen as soon as there's any prospect of the sun coming out . Very frustrating. Hope you get it sorted soon. Do check the LCD connection like Artstu says - if this is loose then since this sends signals to select on/off and assist levels the motor could easily become unresponsive if the signal is interrupted.

New bikes usually need adjusting / first service after 100 miles or so after components have bedded in - so if it needs to go back in on account of an electrical issue then might be a good opportunity to combine with any initial adjustments necessary on the mechanical side too.

 

[trex]

It's a week now that the problem is not sorted, that makes me think that wissy would have had a better service from direct vendors such as kudos.

 

[wissy]

i completely disagree, and I should know.

I have been offered three alternatives, and the choice is mine to make. i think these choices go abve and beyond what lectrifyinCycles should have to do.

1. the offer for KTM distributor to come over and have a look to see if anything obvious and if not then to take bike to sort the sorting out out. <blydi Inglish language>

2. Send courier with box and packaging. resend courier once bike packaged. Sort bike out and return

3. As above and also send me a free loan bike until,mine sorted and then package that one back also.

in fact these options were given to me on the very first day! It is ME aka I that wanted to wait and see if I could find an obvious issue and do a test ride this bank holiday to try to eliminate some factors.

It makes sense not to rush to send the bike back with all the hassle and expense before seeing if it is something obvious. So please do not assume the seller is not being helpful - quite the opposite in fact. They are being extremely useful and co-operative. i am merely posting on here for additional technical assistance to see if during this long weekend and after some description that somebody on here may have a brainwave. Done the same on Pedelec de.

To reiterate, the service I have been, and am still getting, from ElectrifyingCycles has been excellent and beyond what they are obliged to do for me. So there!

i would appreciate it if you could stick to contributing something purposeful with regards to the fault itself and symptoms......

 

[Electrifying Cycles]

It's a week now that the problem is not sorted, that makes me think that wissy would have had a better service from direct vendors such as kudos.

As Wissy said we offered several alternatives including offer of a loan bike which few others offer. I still think that the problem relates to a loose connection. We worked to try and solve problem remotely but this is not always possible. However we always aim to provide exceptional service whether when selling bike or finding solutions to problems.

In addition when we do have problems (our first with Bosch powered bike) we work with the customer to meet their individual circumstances. Had we collected bike straight away then it would have most likely been solved though hindsight is a wonderful thing.

 

[trex]

there was a diagnostic message pointing to communication error, that means that either the cable between the human interface to the controller inside the motor is damaged or the human interface itself needs replacing.

 

[Artstu]

Any news on this Wissy?