SCHWARZWILD Bafang M820 with LCE 930 frame

[KaroKönig]

After the first 100 km I decided to make a few improvements.
Since the noise of the motor bothers me a bit, I greased it with Mobilgrease 28 and covered the housing with insulation mats to reduce the high frequencies. On this occasion I replaced the puny XT 30 connection with a flexible XT 60.

I also processed the seat tube with an extended sanding roller in order to use a 170mm seat post.

 

[brbr]

After the first 100 km I decided to make a few improvements.
Since the noise of the motor bothers me a bit, I greased it with Mobilgrease 28 and covered the housing with insulation mats to reduce the high frequencies. On this occasion I replaced the puny XT 30 connection with a flexible XT 60.
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I also processed the seat tube with an extended sanding roller in order to use a 170mm seat post.

Wow! Nice to see inside!
On my side the 170mm dropper fits without an issue

 

[temon10]

After the first 100 km I decided to make a few improvements.
Since the noise of the motor bothers me a bit, I greased it with Mobilgrease 28 and covered the housing with insulation mats to reduce the high frequencies. On this occasion I replaced the puny XT 30 connection with a flexible XT 60.
View attachment 125418
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I also processed the seat tube with an extended sanding roller in order to use a 170mm seat post.
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So U mix factory lube with your mobilgrease? Isn't that too much?

 

[KaroKönig]

So U mix factory lube with your mobilgrease? Isn't that too much?

I did it same way with my M600 without problems

 

[temon10]

I did it same way with my M600 without problems

now is it quieter?

 

[KaroKönig]

now is it quieter?

I haven't had time to drive yet, with the M600 it has already brought something

 

[KaroKönig]

Yesterday the first ride after the "improvements" and what can I say ? The work can be saved, only minimal improvements in noise reduction. I had hoped for more. Still, one of the best bikes I've ever ridden.

 

[haydz26]

what is the colour code for the green section of paint?

 

[KaroKönig]

what is the colour code for the green section of paint?

Kamaleon Extreme Star Paint | Colourfox

 

[JimLee-Lightcarbon]

Yesterday the first ride after the "improvements" and what can I say ? The work can be saved, only minimal improvements in noise reduction. I had hoped for more. Still, one of the best bikes I've ever ridden.


View attachment 125831

Your painting is always so amazing,
Look forward the riding video,

 

[KaroKönig]

Your painting is always so amazing,
Look forward the riding video,

Thanks for your praise, but what do you understand by riding video? The most I can do is one with a helmet camera, but then you can only see the handlebars. You'd probably rather see the whole bike in action, right?

 

[JimLee-Lightcarbon]

Choose one way is more convenient for you is fine, as long as you display the whole bike at the beginning and end,

 

[KaroKönig]

Choose one way is more convenient for you is fine, as long as you display the whole bike at the beginning and end,

Hi Jim, would you also like a video of the bikes with LCES 004 and LCES 1075 frames? I love them all, every bike can be ridden in a different way. I can't wait to build a new framework from you again.

 

[Tilt]

superb and now a fatbike with m560?

 

[KaroKönig]

superb and now a fatbike with m560?

In fact, I'm still missing the M560 in my collection, not a bad idea

 

[hamncheez]

That is correct. The motor only goes into overvoltage protection at 55.9 V, so I decided on a 48v battery to get a little more power

So according to this guy,
Light Carbon with Bafang M800 ,
LG 18650 cells have a nominal voltage of 3.7v, but a peak of 4.2v when fully charged. Do your 21700 cells stay close to 3.7v even when fully charged?

 

[KaroKönig]

So according to this guy,
Light Carbon with Bafang M800 ,
LG 18650 cells have a nominal voltage of 3.7v, but a peak of 4.2v when fully charged. Do your 21700 cells stay close to 3.7v even when fully charged?

No, I charge it fully and then get 13x 4.2 V = 54.6 V. Then I still have 1V reserve until the overvolt-protection

 

[brbr]

No, I charge it fully and then get 13x 4.2 V = 54.6 V. Then I still have 1V reserve until the overvolt-protection

Did you notice an improvement in regards with motor heating compared to « normal » voltage ?
I’m plannning on building a custom pack later and your solution is interesting !
How does the percentage on the display works? You stay longer at 100%?

 

[Tomblarom]

View attachment 125930

Da lohnt sich der Einbruch langsam! Spaß beiseite, nette Sammlung! Pass gut drauf auf!
The break-in is starting to pay off! Joking aside, nice collection! Take good care of it!

 

[KaroKönig]

Did you notice an improvement in regards with motor heating compared to « normal » voltage ?
I’m plannning on building a custom pack later and your solution is interesting !
How does the percentage on the display works? You stay longer at 100%?

The engine doesn't get particularly hot. However, I also rarely use level 4 and 5. With the increased voltage, the power is also sufficient in the lower levels. And the first 20km the display remains at 100%

 

[Yozha]

How far can you go and what is the climb?

 

[KaroKönig]

How far can you go and what is the climb?

Yesterday I did a tour of 68 km and 1600 hm without using the range extender. However, only in levels 1+2

 

[mirek-xc]

Yesterday I did a tour of 68 km and 1600 hm without using the range extender. However, only in levels 1+2

What capacity do you think the largest battery will fit into this frame?
You made a great bike, very inspiring.
It's great that you show the construction step by step.
Accumulators are the most difficult knowledge for me.

 

[KaroKönig]

What capacity do you think the largest battery will fit into this frame?
You made a great bike, very inspiring.
It's great that you show the construction step by step.
Accumulators are the most difficult knowledge for me.

I think a 13S3P with 21700 cells just fits into the frame. That would be 720 Wh. However, the weight of the bike would increase to over 19 kg.

 

[Freda]

I think a 13S3P with 21700 cells just fits into the frame. That would be 720 Wh. However, the weight of the bike would increase to over 19 kg.

I just started building a 13S3P battery, but it will still take some time before it is ready. Cells only glued together weigh 2671 grams.

 

[raggertje]

Hi @KaroKönig , great build!

I’m thinking about replacing my LCES004 with a LCE930. How would you compare the two riding wise?

Thinking about the 48V version of de M820. Do you think a 14S3P will fit the frame?

 

[KaroKönig]

Hi @KaroKönig , great build!

I’m thinking about replacing my LCES004 with a LCE930. How would you compare the two riding wise?

Thinking about the 48V version of de M820. Do you think a 14S3P will fit the frame?

My bike with the LCES 004 frame is 6 kg heavier and you can already see that in the handling. Downhill, however, I prefer the extra weight. Since I changed the head angle of the LCES 004, the frames are similar in geometry. I don't think there will be a 48V version for the M820 and a 14S3P wouldn't fit in the frame either.

 

[patdam]

My bike with the LCES 004 frame is 6 kg heavier and you can already see that in the handling. Downhill, however, I prefer the extra weight. Since I changed the head angle of the LCES 004, the frames are similar in geometry. I don't think there will be a 48V version for the M820 and a 14S3P wouldn't fit in the frame either.

currently you can purchase the CEF50 with M820 with 48V battery and someone here ride it

 

[KaroKönig]

currently you can purchase the CEF50 with M820 with 48V battery and someone here ride it

The 48V battery is a 13S with 54.6V end-of-charge voltage, which still works with the 43V version of the M820. However, the 14S battery is a 52V and will only work with a 48V version

 

[El Topo]

superb and now a fatbike with m560?

I am so dying to see this. I really would like to see a lighter fat bike build, without the M620. Still haven't given up hope on that one.
A lighter motor and smaller battery should easily shave off 5kg of the current fat bike builds.