2 Speed Xiongda hubmotor
- Thread starter d8veh
- Start date
knutselmaaster
1 kW
Great service!
Is it an optical illusion or are the tooth slightly asymmetrical on the new one?
Is it an optical illusion or are the tooth slightly asymmetrical on the new one?
geofft
1 kW
Looking at the failed gear there's very little wear on the teeth, seems to be just fatique fractures at the root of the teeth. I'm no materials specialist but that kind of degrading of the plastic looks very similar to the effects of lube attacking the material. Lube issues have much discussed in the past of course, maybe the 'new' gear type is more resistant, though I don't suppose Xiongda are likely to share the details with us...
knutselmaaster
1 kW
What controller / display are you using?
The sun gear in the photo is from my first failure,when both the sun gear and planetary gears striped.geofft said:
knutselmaaster
1 kW
Ah, if you have a problem with a Luna kit, the best thing would be to contact Luna as they have their own display.zippys said:
geofft
1 kW
The sun gear in the photo is from my first failure,when both the sun gear and planetary gears striped.craiggor said:
Seems like various failure modes there. Maybe the best explanation for simple souls like myself, is....
They're not strong enough.
cycleops612
10 kW
zippys said:
manual listed here, but no 25h error mentioned?
https://lunacycle.com/luna-full-color-display-dpc-14-for-the-bbs02-and-bbbshd/
I noticed there has been some talk about torque measurements.
I had been using a YESCOMUSA generic 1000 watt/ 48 volt rear direct drive hub motor in a 26 inch wheel on my fatbike, for years and it works decent, but the torque was weak. It had a 25 NM torque rating.
A week ago I decided to buy a BAFANG 750 watt / 48 volt geared hub motor that had a 80 NM torque rating. I was expecting the torque of this Bafang to really
impress me when compared to the YESCOM motor. I wasn't impressed . It does have a bit more torque, but not much as I was hoping. Furthermore, I have been pumping 2200 watts into the Bafang, which is 3 times what its rated for, which I would assume would increase the torque rating from 80 NMS to over 200 NMS...and it still isn't very impressive.
I'm guessing if torque is what you want., a good solution may be the MXUS V3 for around $300 . My bafang was $212 , and I was expecting better torque . I do like that it freewheels and is smaller/ lighter ..but it is also much louder at slow speeds.
Does anyone know which MXUS V3 motor would give the highest torque on a 48 volt - 50 amp setup in a 26 " wheel ? A top speed of 40 mph, with high torque and efficiency is all I need.
I had been using a YESCOMUSA generic 1000 watt/ 48 volt rear direct drive hub motor in a 26 inch wheel on my fatbike, for years and it works decent, but the torque was weak. It had a 25 NM torque rating.
A week ago I decided to buy a BAFANG 750 watt / 48 volt geared hub motor that had a 80 NM torque rating. I was expecting the torque of this Bafang to really
impress me when compared to the YESCOM motor. I wasn't impressed . It does have a bit more torque, but not much as I was hoping. Furthermore, I have been pumping 2200 watts into the Bafang, which is 3 times what its rated for, which I would assume would increase the torque rating from 80 NMS to over 200 NMS...and it still isn't very impressive.
I'm guessing if torque is what you want., a good solution may be the MXUS V3 for around $300 . My bafang was $212 , and I was expecting better torque . I do like that it freewheels and is smaller/ lighter ..but it is also much louder at slow speeds.
Does anyone know which MXUS V3 motor would give the highest torque on a 48 volt - 50 amp setup in a 26 " wheel ? A top speed of 40 mph, with high torque and efficiency is all I need.
cycleops612
10 kW
And may i add a query:
Re adding torque to the above initial DD drive, would there have been electric/electronic solutions such as sine wave controller etc.?
are there ways of fine tuning the magnetic pulses to good effect?
Re adding torque to the above initial DD drive, would there have been electric/electronic solutions such as sine wave controller etc.?
are there ways of fine tuning the magnetic pulses to good effect?
bleedpurple
1 µW
zippys said:
I had the same issue with the 25H error code on the double torque/double speed motor from Luna. Try disconnecting the two brake sensors. That made my error code go away. I think this will get you to pass tests 1-5 with 6 failing.
cycleops612
10 kW
bleedpurple said:
So assuming theysell one, isnt the moral for newbs - get a controller from XD at purchase? - or one the suggest/recommend.
"So assuming theysell one, isnt the moral for newbs - get a controller from XD at purchase? - or one the suggest/recommend."
cycleops612, this seems like good advice. But what else delineates the luna version from XD's? I.e., why not just buy from XD and get Bonnie's (good) support.?
Correct me if I'm in error, but I thought that the Luna principal could not tell us any material difference between the innards of an XD and that of his. If I am in error, then please point me to any documentation of those differences. If it is on the Luna web site, I missed it.
Thx.
cycleops612, this seems like good advice. But what else delineates the luna version from XD's? I.e., why not just buy from XD and get Bonnie's (good) support.?
Correct me if I'm in error, but I thought that the Luna principal could not tell us any material difference between the innards of an XD and that of his. If I am in error, then please point me to any documentation of those differences. If it is on the Luna web site, I missed it.
Thx.
techedge
1 mW
- Joined
- Jun 20, 2015
- Messages
- 10
bigoilbob said:
Yeah, I'm with you on this Big-Oil-Bob!
Is it simply that people are afraid to purchase from an overseas (Chinese) company direct - despite all the recommendations that Xiongda are the reputable company everyone on this thread has found for themselves?
I'm not suggesting anyone (Luna) aren't a good proposition, but remember the middle-man will always take a cut, and if they can't demonstrate that they are also providing a service, then where is the value for the extra $$s people will be paying going the middle-man route/
cycleops612
10 kW
flat tire said:
I think u mean - why would anyone not do what i would do if i were in their shoes.
Trouble is u r not & never will be. u dont know what u dont know.
r u saying no one above has stated a valid preference/reason?
knutselmaaster
1 kW
The most interesting part is that it provides a lot of torque at 250w. Here in Europe 250w is the legal power limit so installing a bigger motor isn't an option.
