Search found 20 matches

by Chito
Nov 29 2019 1:40am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

there are holes in the back of the piece of the image. through those holes you can push the bearing
by Chito
Nov 16 2019 9:22pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

Dorph wrote:
Nov 15 2019 12:46am
Anyone know if this motor will work with pedal-brake systems (gear in hub)?
if you mean the brake system that works when you turn the pedals back, the answer is no, because when you rotate the pedals in an anti-clockwise direction with this engine, the chain does not move
by Chito
Nov 04 2019 4:59pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

Therefore, it is necessary to advance the measuring magnet a little to prevent the above described from happening.
In the video that was shared previously, it is indicated how the magnet should be rotated
by Chito
Nov 04 2019 4:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

Could this problem be due to an incorrect sensor magnets allineament? Yes what happens is that the torque sensor works with the angular offset between the magnets, the more force you apply to the pedals, the more angular offset there is between the magnets and the motor helps more. But if the angul...
by Chito
Nov 03 2019 3:30pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

perfect , going to do that, thanks allot for your support chito! You can also arm the bottom bracket without the spring, which will only work the pass sensor and not the torque + pass sensor. I tell you if you can't find material to make a new spring. You can arm without spring and calmly look for ...
by Chito
Nov 03 2019 2:32pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

my magnet also broke, I joined it with cyanoacrylate and it was perfect https://www.instagram.com/p/B39eSNMBlzV/ great to know ! thanks allot for the pic, more relief but meanwhile found another problem. i also found out my spring is broken inside and cannot take it out I had to drill the shaft to ...
by Chito
Nov 03 2019 1:14pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

https://youtu.be/Y9HFFLLJLaw This video explains better thanks allot , great video i broke the magnets while taking them out stupid me , do you think if i glue them they can work out?... my magnet also broke, I joined it with cyanoacrylate and it was perfect https://www.instagram.com/p/B39eSNMBlzV/
by Chito
Nov 02 2019 7:33pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

My 48V 500W Lingbei is acting really funny and some of the symptoms might look similar to what Metaller described earlier. The torque sensor seems to be doing opposite to what it should. I noticed that the harder I press the pedals, the less like power will be delivered. Only when pedaling very gen...
by Chito
Oct 25 2019 1:39pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

Is it possible to replace the STM32F031C6T6 of the lingbei controller with an STM32F103C8T6?
by Chito
Oct 23 2019 11:27am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

it seems more like a switch than a linear sensor Hm, with some beam theory and some assumptions of dimensions from your new photos, the sensor could work quite linear... You'll get a displacement of about 1mm if you step on one pedal with 80kg. Of course your spring made from two stripes is much we...
by Chito
Oct 23 2019 8:50am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

I saw in a part of the forum that the motor controller uses a stm32 micro controller. Is it correct? If so, it could easily be programmed in arduino IDE with a st link v2. :D Does anyone know where to find any programming code of any controller? :wink: having a code, it can be edited or new function...
by Chito
Oct 23 2019 7:51am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

The engine is very efficient, it heats up very little
by Chito
Oct 23 2019 7:35am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

mm28 really uses a torque sensor, use a spring between the axle and the transmission to the pinion. Thank you for the photos. But please explain better. I understand the principle, but I don't see a suitable spring in your photos.... regards stancecoke Lingbei_6.png Hello stancecoke, the analysis y...
by Chito
Oct 19 2019 6:05am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

I don't know why they don't upload the photos I upload :(
by Chito
Oct 19 2019 6:01am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

mm28 really uses a torque sensor, use a spring between the axle and the transmission to the pinion.It has two magnets and measures the offset between the two to record the displacement of the spring. The transmission may have a small displacement with respect to the axis. One magnet is attached to t...
by Chito
Oct 19 2019 5:59am
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

Hi, I have a mm28.500, I have noticed that it only has 85 rpm of pedaling assistance. this is normal? Quite normal for electric assistance as Max torque is at 1rpm? Maybe this something cut by the torquesensor? I measured it directly with the throttle, and without the chain in place so that it didn...
by Chito
Oct 18 2019 12:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "Lingbei MM28.250 torque sensor mid drive"
Replies: 384
Views: 62454

Re: New "Lingbei MM28.250 torque sensor mid drive"

Hi, I have a mm28.500, I have noticed that it only has 85 rpm of pedaling assistance. this is normal?