Search found 36 matches

by jur
Apr 08 2019 11:13pm
Forum: E-Bike Non-hub Motor Drives
Topic: Programming the Bafang Middrive BBS01+BBS02
Replies: 1147
Views: 319847

Re: Programming the Bafang Middrive BBS01+BBS02

When I connect, the buttons are greyed out unless I connect it to the motor cable. So if your buttons remain grey then I am guessing there is no comms between the motor and the module.

If your display unit still works correctly when you connect it to the motor, then you haven't damaged anything.
by jur
Feb 24 2019 5:21pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

If you open the tsdz2 cover to get acces to the controller , change the cover screws. After opening it twice , i've now got two stripped screw heads. Resized_20190224_205530_4339.jpeg Various epoxies claim to fix this type of failure, but they replace a material that failed with something weaker. T...
by jur
Nov 07 2018 9:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

Adding to that, a 36V motor generates less volts (ie lower back EMF) than the 48V motor so at the same voltage applied by the controller, the 36V motor would top out at higher speed than the 48V battery. However, because a 36V motor has fewer turns on the field coils, more current is needed to gener...
by jur
Nov 07 2018 8:58pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

Ok, this is something that i do not understand: that a motor has torque - ok, that it has power - also ok. But how can it have speed? (and i am not talking about the fact that it is mounted and fixed to a bike :-)) For my understanding, the motor helps you pedalling (assuming that you do not use it...
by jur
Nov 07 2018 6:01pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

Ok, this is something that i do not understand: that a motor has torque - ok, that it has power - also ok. But how can it have speed? (and i am not talking about the fact that it is mounted and fixed to a bike :-)) For my understanding, the motor helps you pedalling (assuming that you do not use it...
by jur
Jul 31 2018 2:45am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

Grant,.. sorry , i intended to add, you could try just stripping and cleaning that internal roller clutch whilst you are waiting for a new gear to arrive. It may just be gummed up and sticky with all the use you have on it ! Good luck. EDIT : ..there is also the possibility that the stub shaft with...
by jur
Jul 30 2018 12:41am
Forum: E-Bike Non-hub Motor Drives
Topic: Programming the Bafang Middrive BBS01+BBS02
Replies: 1147
Views: 319847

Wheel size in config file does not take

I have tried fruitlessly to set my wheel diameter to 19" in the cfg file but the firmware seems to ignore that cfg setting, using the display setting instead. The display setting jumps 2" which gives an up to 5% error which is my case.

Am I doing something wrong or is the config value always ignored?
by jur
Jun 07 2018 2:18am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

I am definitely over complicating that, although that is the type of calculations some of these higher end mid drives make, correct? So, just out of curiosity, what higher end motors could take a bit of thrashing? I think the TSDZ2 is very good value for money but it's probably not quite what I was...
by jur
Jun 04 2018 10:39pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

Hmm, yeah, it's getting harder and harder to get in now. I was lucky that I got my residency before they upped the requirements (I'm from the UK originally). Anyhoo, just had my maiden voyage around the block with the TSDZ2! Very cool! I seem to only be able to get up to around 30 km/h using just t...
by jur
Jun 04 2018 10:31pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

Actually, while cycling to work this morning I realised something important: We don't have the I to plug into IwL! That is actually an unknown quantity. The only thing we have is filtered average battery current. So back to analysis for me... I is the motor phase current. Yes, we have only the batt...
by jur
Jun 04 2018 6:26pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

That would be great. I am working on getting a simulation running on my PC based on Colter's work. It's slow going because of other commitments. About the Sin-1, seems the input limits are -1 up to 1. Let's say I have a IwL = 8.5 and a Vphase = 4.8, 8.5 / 4.8 = 1.77... how can I calc the Sin-1?? Yo...
by jur
Jun 03 2018 10:55pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

That would be great. I am working on getting a simulation running on my PC based on Colter's work. It's slow going because of other commitments. About the Sin-1, seems the input limits are -1 up to 1. Let's say I have a IwL = 8.5 and a Vphase = 4.8, 8.5 / 4.8 = 1.77... how can I calc the Sin-1?? Yo...
by jur
May 29 2018 6:53pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

I have two plastic shims in the same bag with xh18 supplied by the manufacturer, are these supposed to go behind the crank spindle circlips? That seems weird, why haven't they installed everything already at the factory if there is such a significant play. The plastic washers are to go between the ...
by jur
May 22 2018 10:44pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

Great work, casainho!! :mrgreen: Congratulations also on being able to hack the TSDZ2 controller code - that is a great step! Regarding the LCD3 display, the XH18 is actually much more versatile - it is a complete blank slate, no predetermined fields that you have to use. You have a high-res color L...
by jur
May 12 2018 5:02pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

Reached about 100 mi of road-only commuting and seemed to have developed some crank slop which I think is making an intermittent noise. Grabbing the crank arm ends and moving them toward and away from the frame show movement. Crank arm bolts were all properly torqued. Motor housing is solidly mount...
by jur
May 07 2018 12:26am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

That would be great. I am working on getting a simulation running on my PC based on Colter's work. It's slow going because of other commitments.
by jur
May 03 2018 6:08pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

@jur, are that values for 48v or 36v motor? 48V. I have assumed that the motor is Y. Oh, my motor for development is 36V... Let's make some assumptions and deductions to get you going: 1. From my job I know that lower voltage electromagnetic components have fewer turns per winding. The number of tu...
by jur
May 03 2018 3:35pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

casainho wrote:
May 03 2018 7:13am
@jur, are that values for 48v or 36v motor?
48V.

I have assumed that the motor is Y.
by jur
May 03 2018 4:47am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

1. Not sure, what if we advance to much the phase voltage?? If we advance a little bit too much, the calculation will still come out positive because we use magnitude values for I and V. For the next fast loop cycle the value of phi is re-calculated so it will be self-correcting. Can you think in a...
by jur
May 02 2018 8:49pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

Tomorrow I will try to see if I can remove the covers without taking the motor off the bike, in order to measure motor winding R and L. Good!! I think you need at least to remove left cover and that means removing the left pedal crank to be able to remove the cover. Unfortunately I didn't look at i...
by jur
May 02 2018 2:07am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

Tomorrow I will try to see if I can remove the covers without taking the motor off the bike, in order to measure motor winding R and L.
by jur
May 02 2018 1:51am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4856
Views: 355388

Re: New "TSDZ2 Torque Sensor Central Motor"

I bought a 48V/500W TSDZ2 from @eyebeyesickle and installed it this weekend on my wife's Moulton APB. I have a BBS02 on my Moulton APB. My BBS02's original firmware settings have been completely reconfigured; the original settings were frankly awful - various PAS levels had not only power levels as...
by jur
May 01 2018 11:56pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

1. Not sure, what if we advance to much the phase voltage?? If we advance a little bit too much, the calculation will still come out positive because we use magnitude values for I and V. For the next fast loop cycle the value of phi is re-calculated so it will be self-correcting. Yes, I think V is ...
by jur
May 01 2018 10:46pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

I am a bit confused by seemingly redundant information: 1. The needed phase angle advance called phi by Colton, will always be of the same sign. Current will always lag voltage, no sign is needed. 2. The sine of the phase advance angle phi can be calculated by sin phi = IwL/V; where we measure and c...
by jur
May 01 2018 9:57pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2179
Views: 89342

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

Could you please state exactly what you need for solving the math: Inputs, equations to solve and required outputs. I am deep into generating the simplest possible math operations but it would be most efficient if you could please spec what you need. Looking at the documentation from Shane Colton h...