M820 or M510 ?

[Rosz]

Minha pedalada aqui é XC e XCM, minha bike tem suspensões de 100mm e agora estou começando com a CEF50 com M820 e estou adorando, ela é superior em quase tudo, exceto em algumas singles com solavancos. Sou um ciclista leve com 72kg, mas meus joelhos estão doendo quando eu forço em subidas, minha única reclamação é um atraso de 1 ou 2 segundos para desligar o motor. Às vezes saio sem um parceiro e nessa condição eu faria uma pedalada mais conservadora, agora mesmo sozinho me sinto confiante em fazer pedaladas de 80km com 2000m de elevação e uma inclinação máxima de 15%. Para minha esposa estou pensando em montar uma m510.

This is English language forum, in case you haven't noticed.

 

[lkdoido]

This is English language forum, in case you haven't noticed.

Since I use a translator, I translated everything into English, but my browser translated it when I posted.
Translate again
My riding here is XC and XCM, my bike has 100mm suspension and now I'm starting with the CEF50 with M820 and I'm loving it, it's superior in almost everything, except for some singles with bumps. I'm a light cyclist at 72kg, but my knees are acting up when I push on climbs, my only complaint is a 1 or 2 second delay in turning off the engine. Sometimes I go out without a partner and in that condition I would do a more conservative ride, right now even alone I feel confident in doing 80km rides with 2000m of elevation and a maximum orientation of 15%. For my wife I'm thinking of putting together an m510.

 

[Rosz]

With either m820 or m510 you can't go wrong. I just want more power ...so m510. And it also been around for some time so many initial faults of this motor have been fixed. As a rule...never buy the first versions of something... anything.

 

[kaaskopf]

i have some fc2.0 and fc2.1 m510

i much prefer the fc2.0 as it has more torque from bottom end.

torque sensor of the 2.1 feels better but whole engine feels like its much higher revving and there is almost no torque in lower cadance

 

[patdam]

I don't know if i have an 2.01, but i have controller differency on my 2 FC2 (1 is an FC1 with FC2 controler). one can be seeted at 400 for assist %, the other 350 max. As i never use boost mode, i don't really feel differencybetween the 2 in useI don't know if i have an 2.01, but i have controller differency on my 2 FC2 (1 is an FC1 with FC2 controler). one can seet at 400% for assistl %, the other 350 max. As i never use boost mode, i don(t really feel differency in use

 

[mike_kelly]

Thanks everyone for your replies. I wanted to correct some things that I haven't made clear yet:

My TSDZ2B is really good; I can climb 3% hills at 25kph with almost no effort. If the M820 is as good, I'm fine with that. Buying the best tool is part of the plan. I want a Bafang so I can configure it myself.

So far, the information that I understand:

1. M510 is too powerful out of the box.
2. M820 can't compete with CX Gen 4.

And the question that I have now:

1. What's the purpose of the M820 when the M510 is more powerful for just 0.600g more?
2. Is the M510 reliable?

Should make a correction that the M820 is 600grams llighter, almost 2 lbs, not .600g. It is a big difference if you are trying to make a lightweight bike.

 

[Roman_756]

@souftosouf Hello! I currently have a Tongsheng TSDZ2B motor with a 52V 750W firmware. I want to replace it with a Bafang motor, and I'm leaning towards the M820. I have a question: is its power equivalent to the TSDZ2 that you have (or had)?Also, with my current motor, I can ride for a long time on flat surfaces (asphalt) at a speed no faster than 35 km/h (with a limit of 60 km/h). Did you experience the same? And can you ride faster for a long time with the M820?

 

[souftosouf]

@souftosouf Hello! I currently have a Tongsheng TSDZ2B motor with a 52V 750W firmware. I want to replace it with a Bafang motor, and I'm leaning towards the M820. I have a question: is its power equivalent to the TSDZ2 that you have (or had)?Also, with my current motor, I can ride for a long time on flat surfaces (asphalt) at a speed no faster than 35 km/h (with a limit of 60 km/h). Did you experience the same? And can you ride faster for a long time with the M820?

View attachment 156400

Hey how you doing ? i still have both, i use the TSDZ2B for commuting, and the M820 for mountain biking (400km so far since august).

So far, i dont regret buying the M820. Its as powerfull as the TSDZ2B. But the power delivery is different (1 sec overrun more on the M820 but more natural feeling).

For me, the M820 is perfect for MTB. It doesnt draw too much power (so it has more range), but enough to climb fire roads without any issues (On boost mode its almost like a dirt bike).

If you liked the TDSZ2B, dont worry, you cant go wrong with the M820. And i'm 80kg heavy

 

[Roman_756]

Hey how you doing ?

For me, the M820 is perfect for MTB. It doesnt draw too much power (so it has more range), but enough to climb fire roads without any issues (On boost mode its almost like a dirt bike).

I'm doing relatively well, won't complain). Thank you for the detailed response. Just one more question: what firmware and battery are being used? I've read that people use 43V firmware with a 48V battery, which makes it more powerful. I saw that the blogger Neeko DeVinchi recorded the M820 delivering 577 watts uphill.

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I read your messages about having difficulty with power delivery. You mentioned that it was narrow at all levels of assistance. Were you able to overcome this issue?

 

[Roman_756]

Personally, I am leaning more towards the M820 system nowadays.
But I still enjoy the power and feel of the M510 when riding with other full-fat emtbs. Especially if everyone rider just sticks the bike into turbo/boost mode
View attachment 140349
Ultimately, the system is only as good as the implementation and the frame' geometry.
The above being 2 good examples.
View attachment 140353
With more options to look forward too
View attachment 140354

Hello! How are you? I watched your videos about the M820, and I saw you mentioned the frame implementation. What do you think about the Chinese Twitter EM19? You might have encountered it; the price is very appealing, and I plan to ride it lightly on forest trails. I need a full-suspension bike for comfort. Also, could you say something about the comparison, is the power-boosted M820 equivalent to the stock M510?

EM19 2025 - ELECTRIC CARBON BIKE

EM19, Cyctrac Carbon Fiber eMTB with Shimano Deore 12-Speed The EM19 by Cyctrac is designed for high-performance electric mountain biking.

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