zappan wrote: ↑
Sep 02 2019 6:39am
Hi Casainho, why don't you consider the "Lingbei MM28.250" engine
Who owns the same hardware as the Bafang, uses the same displays and has the integrated torque ?,
I understand that it does not start from 1000W but I think it supports all the power that can be managed by an ebike.
Lingbei uses a microcontroller that can be easily programmed and firmware developed for, contrary to Bafang BBS02/HD.
But some points I consider:
- I agree with Andrea_104kg, I see on the market more light mtb bicycles and for me is enough 250 or 350 watts when I do mtb, because that is 2x more of the human power I can do, because I want only to reduce the disadvantage I have over my colleagues that have 70 kgs and are fit and I am a bit fat with 105 kgs, recovering and in middle of some operations.
For respect to my colleagues, I do not want to go ride like a motorcycle but instead doing mtb.
Also this is a DIY motor to install on the bicycle on the market and they are more and more light and also with fragile frame and gears so no big point to go with heavy and big motors and batteries, as also very powerful motor.
- On my city, which is flat, with TSDZ2 and with 2 rear panniers, large MTB tires, dual suspension and me with 105 kgs, I can ride up to 45 km/h using TSDZ2 with periods of 800 W, that is more than enough. Maybe if I would live on mountains I would want more power.
- But I plan to buy another type of bicycle and that is a cargo bike. For this application, sure I will want more power, I think that at least 2x more.
My view of disadvantages of Lingbei:
- only maybe 50% more power than TSDZ2 (but is also more heavy, as expected)
- no spare parts or very expensive, which makes very expensive to develop for
- not popular
TSDZ2 is small, cheap, cheap repair parts and was available from PSWPower at the begin of this project.
I would be interested on another mid drive DIY motor but with at least 2x more power. I think the BBSHD is the one I like for because is 3x more powerful than TSDZ2. It is also popular, although there are repair parts, the motor controller is very expensive. And has no torque sensor...
Since now I think BBS02/HD motor controllers are a dead end road due to the motor controller microcontroller that we don't have a compiler and nor a programmer, I think I will use the cheap OpenSource VESC 60 euros on Ebay, that is high performance FOC and works with 48V 13S batteries and 50 amps continuous.
The torque sensor will need to by DIY anyway.