SZZS specific CEF50-main thread (initial builds and troubleshooting related only)

[stuff]

BTW what size for seatclamp? Any recommend cheap but light for this frame?

They will include it, I bought just one 34.9 cheap from aliexpress and ended up not using it (seatpost is 31.6 and clamp 34.9)

 

[LAnton]

Me too! They are both now out of stock.

There will be a new version on sale soon.

 

[Lehr]

 

[clix]

33% progression in the leverage curve. Linear air can on super deluxe would probably suite it better, than meg-neg. Or coil.

@Lehr Do you maybe also have a braking anri-rise curve? And anti squat for 32/50 or 34/40 rings?

tnx

 

[stuff]

The rear suspension feeling is just amazing, i've plown through several drops, jumps and rock gardens and can't even feel it, copies the terrain really well.
This is with a SuperDeluxe ultimate Air 210x50. Based on the leverage curve imo makes no sense to go for a megneg or a coil.

 

[stuff]

Bafang m820 noise

youtube.com

Bafang m820 in boost mode noise

 

[temon10]

The rear suspension feeling is just amazing, i've plown through several drops, jumps and rock gardens and can't even feel it, copies the terrain really well.
This is with a SuperDeluxe ultimate Air 210x55. Based on the leverage curve imo makes no sense to go for a megneg or a coil.

so 210x55 safely installed?

 

[temon10]

Bafang m820 noise

youtube.com

Bafang m820 in boost mode noise

just like M510 I think. Mine will arrive tomorrow, hope this weekend can test it.

 

[stuff]

so 210x55 safely installed?

My bad, it's a 210x50.

a 210x55 WILL NOT FIT AND WILL BREAK THE FRAME, BE 29 or 27.5, it's the same. the safe max IS 210x52.5

 

[kyphosis]

Bafang m820 noise

youtube.com

Bafang m820 in boost mode noise

Wow alright not bad?? I kinda like the sound actually

 

[stuff]

Next ride i'm taking my insta and doing proper recording, but wanted to give some clarity on the noise since there where a lot of doubts about it. IMO aint bad.

 

[mike_kelly]

If you are shopping for cranks be aware that the site www.fsacycling.com is a scam site and will steal your money.
If you buy something with paypal it will take you to a paypal "donate" page to a private email address.

 

[Myalteregohamish]

The rear suspension feeling is just amazing, i've plown through several drops, jumps and rock gardens and can't even feel it, copies the terrain really well.
This is with a SuperDeluxe ultimate Air 210x50. Based on the leverage curve imo makes no sense to go for a megneg or a coil.

This is the kind of info I’ve been wanting to hear about. Thank you sir!

 

[Lehr]

33% progression in the leverage curve. Linear air can on super deluxe would probably suite it better, than meg-neg. Or coil.

@Lehr Do you maybe also have a braking anri-rise curve? And anti squat for 32/50 or 34/40 rings?

tnx

 

[Stephen B]

I asked Jean if they had any update on the 410wh battery, She said, "there purchasor pushed Bafang again and no concrete ready date"
She said a 720wh battery could be ready by end of next week for $23 more.
She also said the 410wh battery weighs 2.8kg and the 720wh weighs 4kg.

I really wanted to do a light weight build and early reports sounds like plenty of range with the 410wh, what do you guys think?

Stephen

 

[savas]

Hi,how is the original battery mounted in the frame?Can you make some pictures?Diy Battery should be around 1.7kg with 20 cells for 36v and around 2.1,2.2 kg for 48v

 

[kyphosis]

Hi,how is the original battery mounted in the frame?Can you make some pictures?Diy Battery should be around 1.7kg with 20 cells for 36v and around 2.1,2.2 kg for 48v

Some pictures on page 34.

I was thinking of going 43v but after seeing the difference I wonder if its worth it?
What is the actual differences in performance and so on 36 vs 43v?

 

[mike_kelly]

Some pictures on page 34.

I was thinking of going 43v but after seeing the difference I wonder if its worth it?
What is the actual differences in performance and so on 36 vs 43v?

No difference! 43v battery are same cells just more of them. 43v could be lighter because of conductor size if it is made with smaller conductors.

 

[kyphosis]

No difference! 43v battery are same cells just more of them. 43v could be lighter because of conductor size if it is made with smaller conductors.

To me that sounds very contradictory. smaller conductors needed on higher voltage?
So zero motor performance increase, not even more responsive like my overvolted soft air guns back in the days?
Am I a fool going 43v then? My feelings says it packs more "punch" like my old hub motor, 48 vs 50something volts did.?

 

[forsa355]

I asked Jean if they had any update on the 410wh battery, She said, "there purchasor pushed Bafang again and no concrete ready date"
She said a 720wh battery could be ready by end of next week for $23 more.
She also said the 410wh battery weighs 2.8kg and the 720wh weighs 4kg.

I really wanted to do a light weight build and early reports sounds like plenty of range with the 410wh, what do you guys think?

Stephen

I too really wanted a lighter build. Was holding out for the 410wh battery but got tired of waiting and "upgraded" to the 720wh battery so I can get the damn bike as soon as possible! I figure I will ride it like this for a while, and maybe in the offseason build a DIY minimalist battery. It being 36v simplifies things slightly as well, as 36v BMS's are easier to source.

I tend to take shorter rides daily, so I guess having the larger battery means charging less too

 

[mike_kelly]

To me that sounds very contradictory. smaller conductors needed on higher voltage?
So zero motor performance increase, not even more responsive like my overvolted soft air guns back in the days?
Am I a fool going 43v then? My feelings says it packs more "punch" like my old hub motor, 48 vs 50something volts did.?

Power is equal to voltage x current. So if you have a 540whr battery/36v the current is 15a but a 540whr/43=12a so the 43v needs to handle less current than the 36v battery.

It is a little easier to find 36v external batteries than 43v.

 

[kyphosis]

Power is equal to voltage x current. So if you have a 540whr battery/36v the current is 15a but a 540whr/43=12a so the 43v needs to handle less current than the 36v battery.

It is a little easier to find 36v external batteries than 43v.

Thank you mike

 

[stuff]

Looks like i’m the only one that got the 410 battery for now, I was really focused on weight so dont regret although had to make the mods mentioned before for it to fit (thanks to bafang poor mount design).

Tomorrow i’ll give it a hard ride until I drain the bat completely, lets see what it can do and how hard will be to come back home without assist

 

[gido]

43v motor has 20% more power....

 

[Stephen B]

Looks like i’m the only one that got the 410 battery for now, I was really focused on weight so dont regret although had to make the mods mentioned before for it to fit (thanks to bafang poor mount design).

Tomorrow i’ll give it a hard ride until I drain the bat completely, lets see what it can do and how hard will be to come back home without assist

Did they send you the old design battery before they decided to redesign it? Is that why you had to make the mount adapters?

 

[mike_kelly]

43v motor has 20% more power....

Only because it has 20% more batteries. Power is power no magic. 410whr battery has the same power at 36v or 43v.

 

[spokémon]

She said a 720wh battery could be ready by end of next week for $23 more.

$23 more. that's pretty good value. Linda told me the Bafang 360Wh battery is delayed even longer.

 

[spokémon]

I asked Jean if they had any update on the 410wh battery, She said, "there purchasor pushed Bafang again and no concrete ready date"

Linda told me 410Wh end of this month! So in about 2 weeks? I think I read Jim from LightCarbon said sometime mid June?
So pretty much nobody knows. So I wouldn't hold my breath.

 

[spokémon]

Just a heads up. Linda says she can build a 360Wh 36v battery inhouse for me. Presumably through their current battery builder.

 

[temon10]

Just a heads up. Linda says she can build a 360Wh 36v battery inhouse for me. Presumably through their current battery builder.

this is good news, maybe she also can build 500Wh battery. 36v 10s 4p 3400mAh cells.