Recent content by GT877

Thanks for your suggestions. I have finally fixed the problem and it turned out it was the throttle! I swapped it (compact slim clip on thumb throttle) out with a different type of thumb throttle (the box style with red,yellow&green led) and no more juddering/stalling and horridly loud noises...

Just to add to my previous post. When using the self learn function and noticing it not turning the wheel but audibly spinning inside the hub once I press the throttle briefly it stops and then turns the whole wheel in right direction. I understand now that if the motor spins backwards it...

Thanks I gave the self learning function a go and the wheel starts spinning in the right direction and then I disconnect the self learning wire and disconnect the controller. Is that correct? I did do it several times and I notice sometimes the wheel doesn't spin at all but I can hear the motor...

Hi thank you for your response. I believe so as the controller and motor both have the same 3 colours (blue, green and yellow) With just the bike propped up, the motor runs absolutely great with a smooth start from the throttle and no worrying sounds so I think the phase wires are all ok. It is...

I've just finished a custom ebike build with the objective of having very long range. The motor is a 250w rear hub geared motor (no brand) laced into a 20" wheel and the controller is rated for 350w. The controller only has a throttle input (no PAS) My battery is a 48v 50ah lifepo4 and is frame...

Quick Update! I did attempt to solder in a new sensor despite it's tiny size but I did a pretty bad job at it and then could not get it properly seated afterwards and so when connected to the battery the motor would immediately startup but at a lower speed this time. I decided to just go ahead...

Thanks all for the comments on this. So the middle pin is the ground, that makes perfect sense then! I checked the wiring everywhere else and it seems these broken pins at the sensor are the only problem. The magnet is still firmly in place where it should be so that is good. The sensor part...

Hi thank you so much for the detailed response. I opened up the throttle to see if the ground connection was loose and it was. In fact the other 2 solder connections to the sensor were about to break and the middle pin (blue wire) was already broken. So I suppose I could buy a new sensor and...

Hi I just wanted to ask for anyone's thoughts before I go ahead and buy a new throttle. I have a 48v thumb throttle for my ebike which I got with my ebike kit back in 2011 so it has had quite a bit of use on it after all these years. The other day I was going full throttle down the road and...

Ah ok thank you john61ct, I think I understand so it is essentially a cheap work around to selling a 48v battery. Instead of 16s it is 15s so one cell pack less? So each cell pack is charged to it's very limit just to give it around the same reading as a healthy 16s pack. Would this imply the...

Hi thank you again for the replies, I really do appreciate it. I agree I could open a dispute for not as described and I am leaning towards doing this today as I believe my cover runs out in a few days. I charged it for 12 hours over night and it read 51.5v (it seems to fluctuate between 51.9...

Hi there I'm afraid I am unsure as to whether it is 16S but I imagine it is and it is sold as a LifePo4 battery and the cells are stated as 3.2v 3C 26650 cell. The overall battery measures 80mmx200mmx330mm and weighs around 8.5kg. That is interesting to read about a possible load inside the...

Hi thanks for your message, what does DoD stand for? I have a new concern now. I've checked the voltage after the battery has been fully charged and it reads 51.9v and soon went down to 51v However the discharge cut off according to the seller's information is 54.75v So what happens is once the...

Thanks for clarifying. I do want to make sure that this time I properly look after this battery and make it last as long as possible as unfortunately I did quite the opposite with my previous battery!

Great! Thank you so much for your reply. That has put my mind at ease then as I was completely unsure on the charge state and this makes perfect sense that it was charged by around 600w. I would love to see a chart showing the voltage correspondence to state of charge for quick reference if...