Search found 26 matches

by NexusG
Feb 19 2020 4:08am
Forum: Motor Technology
Topic: TSDZ2 mid drive and 850C and SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 4567
Views: 315651

Re: TSDZ2 mid drive and 850C and SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

In the german forum is reported, that Tongsheng has completely reengineered the motor in 2020: https://www.pedelecforum.de/forum/index.php?threads/tongsheng-tsdz2-36v-neues-design-2020.73872/post-1379882 almost changed compare to the old version, shell, chip, accessaries inside, firmware I'm afraid...
by NexusG
Dec 13 2019 10:04am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1236

Re: Good value for money 10-15kW brushless

Current rating depends on winding choice. A higher kV winding can take proportionally higher current. 200A with kV 50 is 320A for kV 80 You're absolutely right, I completely forgot it ! Anyway, I will put a temperator sensor on the motor because it's the sole way to know if the motor is actually ov...
by NexusG
Dec 13 2019 9:48am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1236

Re: Good value for money 10-15kW brushless

Energy in equals energy out plus losses as always.. It’s marginally less efficient as there are some added switching losses and copper losses. Reason is this: You need lower applied volts to reach same rpm with a higher kV motor so there are volts to spare. If available battery volts are higher tha...
by NexusG
Dec 13 2019 9:21am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1236

Re: Good value for money 10-15kW brushless

both motors will have similar performance? Simplified and disregarding saturation and heating of motor: Torque constant kT=9.55/kV Torque= kT*I So 80kV motor needs proportional to 80/50 (60%) more current for the same torque as a kV 50 motor with a given current. That’s why you might need a larger ...
by NexusG
Dec 13 2019 5:32am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1236

Re: Good value for money 10-15kW brushless

If money is no problem here are top-end motors https://hacker-industrial-solutions.com/ for the q150 its arround 2000€ without tx :shock: That's way too much. I know that some electric paramotor manufacters use European brushless motors such as Paracell, Geiger, etc... they are probably good but no...
by NexusG
Dec 13 2019 4:49am
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Derailleur e-Shifter with Arduino Nano... need help with programming...
Replies: 7
Views: 977

Re: DIY Derailleur e-Shifter with Arduino Nano... need help with programming...

I have just made modifications to your code, try this : // Electromechanical derailleur project v.1.0 // Assumes you know the servo positions for each gear (determined using v.0.0 software) #include <Servo.h> #include <EEPROM.h> //Need this because we'll be saving the gear selection in EEPROM (to av...
by NexusG
Dec 12 2019 11:21am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1236

Re: Good value for money 10-15kW brushless

I’ve seen some tests where 12090 was a low performer. Really high rotor losses if i remember correctly. I suspected something like this. It's too bad again, because they offer a large choice of motors with different KV and power Geared setup is not so complex and i think it’s probably worth it due ...
by NexusG
Dec 12 2019 7:17am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1236

Re: Good value for money 10-15kW brushless

Skip the revolt motors. They don’t care about quality or customer service. I know since i’ve tried to get warranty for two faulty motors. They are not to be trusted with your money. agree with lars above, particularly on revolt. I've heard the E range are better quality, but their QC and service is...
by NexusG
Dec 11 2019 8:26am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1236

Good value for money 10-15kW brushless

Hello, I'm looking for a reliable, light and affordable brushless motor for my future powered paraglider The max power must be around 15kW, although 10kW should be ok The KV must be around 50 in order to spin a 130cm propeller at 3000 rpm (the battery will be a 16S : 65V max) After some research, I ...
by NexusG
Dec 11 2019 6:31am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

I don't think changing the entire blue gear is a good solution because the issue is likely to reappear Note that I had the same problem with a metal gear and during a hot summer in Spain. It dissapear suddenly for a mysterious reason If the slipping is between the sleeve and the clutch, I think glu...
by NexusG
Dec 10 2019 9:18am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

Also it could be a good idea to press out the old hf1216 and remplace it with a better quality Japan one
The overall reliability of tsdz2 would be increased
by NexusG
Dec 10 2019 6:42am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

From what I understood, the sleeve is the splined metallic part on the blue gear

The slipping issue is between this part and the hf1216 itself (exactly where the red arrow is pointing)
by NexusG
Dec 10 2019 4:41am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

I don't think changing the entire blue gear is a good solution because the issue is likely to reappear Note that I had the same problem with a metal gear and during a hot summer in Spain. It dissapear suddenly for a mysterious reason If the slipping is between the sleeve and the clutch, I think glue...
by NexusG
Dec 08 2019 6:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

Is neoprene glue adequate? It will have some sort of flexibility
by NexusG
Dec 08 2019 11:19am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

I had this slipping issue last summer, although I had a brass gear and the temperature was pretty hot !

I don't know if it's the same origin of the problem... now, no more slipping issue but a metallic clicking noise under load
by NexusG
Nov 20 2019 5:56am
Forum: Battery Technology
Topic: Is a 24s battery dangerous?
Replies: 24
Views: 1686

Re: Is a 24s battery dangerous?

That's it I'm removing all 8,256 18650 cells and the 13 balance boards from my Tesla and replacing them with LiPo so I can monitor the balancing myself and be much safer from now on. These exploding BMS have got to be stopped. That's quite surprising, since lipo have a shorter lifespan and are more...
by NexusG
Nov 18 2019 5:23pm
Forum: Battery Technology
Topic: Is a 24s battery dangerous?
Replies: 24
Views: 1686

Re: Is a 24s battery dangerous?

Years ago, the next performance upgrade for ebikes from 48V was 36V X 2 = 72V. DIY packs and retail 72V packs are now more available, so dual-36V has become rare. I will see if I can use lower voltage such as a 72V battery for my paramotor build, I plan to use the T-motor U15L 43kv http://store-en....
by NexusG
Nov 18 2019 3:37pm
Forum: Battery Technology
Topic: Is a 24s battery dangerous?
Replies: 24
Views: 1686

Re: Is a 24s battery dangerous?

I have read and seen old electricians checking AC mains voltage across two fingers on the same hand using a certain technique. If you use the wrong technique, the muscles in your hand contract, which is bad. Also, current running through your hand can "cook" the muscle tissue. Decades ago, I had a ...
by NexusG
Nov 18 2019 3:07pm
Forum: Battery Technology
Topic: Is a 24s battery dangerous?
Replies: 24
Views: 1686

Re: Is a 24s battery dangerous?

I have build a 24S 16ah with four multistar. I was very anxious when I was connected for the first time everything but I think that if you are very careful you will not have problems. Anyway the first time I put on a double layer of nitril gloves by the way. I think that the simplest way is to conn...
by NexusG
Nov 18 2019 6:26am
Forum: Battery Technology
Topic: Is a 24s battery dangerous?
Replies: 24
Views: 1686

Is a 24s battery dangerous?

Hi,
I plan to build a 24s (88.8v nominal voltage) Li-Ion battery for an electric paramotor
The peak voltage of a 24s battery is around 100v, which is pretty high

Anyone working with such batteries? Do you wear gloves or other protections? Is this voltage letal?
by NexusG
Nov 18 2019 5:14am
Forum: E-Bike Non-hub Motor Drives
Topic: New Torque sensing mid drive
Replies: 18
Views: 1888

Re: New Torque sensing mid drive

1boris wrote:
Nov 17 2019 4:14pm
This motor is much bigger than tsdz2
That's not obvious, judging by the picture
by NexusG
Nov 15 2019 11:05am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

Can anyone recommend a way of getting my standard 42 tooth front sprocket down to say a 36 tooth and still get a reasonable chain line ? There's the (costly) future-bike.it 30T NW chainring : https://www.electrifybike.com/store/p66/30T_Narrow%2FWide_Chainring_for_TSDZ2.html#/ Thanks, 30T would be t...
by NexusG
Nov 15 2019 9:15am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

About the TSDZ2, as soon we have it flashing the firmware by Bluetooth only, it will be the recommend display for TSDZ2 because will be the quicker and easier way to have our OpenSource firmware running, also keeping the display intact and maintain the water prof. I will then archive the KT-LCD3 do...
by NexusG
Nov 15 2019 8:57am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 6617
Views: 665991

Re: New "TSDZ2 Torque Sensor Central Motor"

Waynemarlow wrote:
Nov 15 2019 6:36am
Can anyone recommend a way of getting my standard 42 tooth front sprocket down to say a 36 tooth and still get a reasonable chain line ?
There's the (costly) future-bike.it 30T NW chainring :
https://www.electrifybike.com/store/p66 ... TSDZ2.html#/
by NexusG
Nov 14 2019 3:51am
Forum: E-Bike Non-hub Motor Drives
Topic: New Torque sensing mid drive
Replies: 18
Views: 1888

Re: New Torque sensing mid drive

Disappointed by the rated power
Seems like a copy of the TSDZ2