Dengfu E10 - The CHEEB V1.0 - Discussion

[Geoff12a]

Hi has anyone received there motor/battery in the uk yet this year?

Yes I received mine a week ago

 

[Geoff12a]

Could I please ask a favour? For those of us that want to build our own batteries for the E10, it would be great if someone could please post some detailed photos of the current Dengfu battery case, showing any part numbers etc along with external dimensions. Hopefully we can then source an empty case from the likes of AliExpress etc.
Its not essential to have the bespoke battery case, but it would be nice!
Thanks in advance.

 

[Geoff12a]

hope this helps

 

[Geoff12a]

Cool do you know how long it took to arrive from them sending it mine was sent 15 days ago so am hoping it’s here soon

It was around the 19th last month battery turned up then the motor turned up 3 to 4 weeks I think it takes

 

[LordSpam]

It was around the 19th last month battery turned up then the motor turned up 3 to 4 weeks I think it takes

I presume you got some sort of tracking, Melody asked for a tax number last week and not heard anything since.

 

[Geoff12a]

I presume you got some sort of tracking, Melody asked for a tax number last week and not heard anything since.

No tracking just a message to say I was going to have a parcel delivered 2 days before they delivered it

 

[Purpleaki]

No tracking just a message to say I was going to have a parcel delivered 2 days before they delivered it

Any unexpected taxes from UK import? How much Dengfu quote you including shipping?

 

[Geoff12a]

Any unexpected taxes from UK import? How much Dengfu quote you including shipping?

It was 2360 us pounds not had any tax yet still waiting for fram

 

[Puschtrale]

Tadaaaa....motor arrived. Now i only need to find any information on how to install cables

 

[BootsDave]

I received my motor yesterday too. It looks like it’s going to be more than a month before the frame and battery arrive. I notice that it’s the DP C241 display which has Bluetooth. Has anyone tried the Bafang GO app on their phone with it?

 

[nikname99]

Tadaaaa....motor arrived. Now i only need to find any information on how to install cables View attachment 58750

from Endless sphere

 

[Seqlat]

Hello everyone
I am looking for space for custom batteries in a frame for XL (if that is any difference). Someone tried to squeeze 21700 batteries in there? Maybe 46800 in the future??

 

[Dengfu]

Hello everyone
I am looking for space for custom batteries in a frame for XL (if that is any difference). Someone tried to squeeze 21700 batteries in there? Maybe 46800 in the future??

The electrical connectors fitting at the base and battery lock mechanism at top are a fixed length for the same standard battery, at least on the prebuilt bikes. Someone who has purchased just the frame would be able to confirm if the frame also comes with those already fitted.

Either way, if you're inclined, I suppose you could move or remove them to suit.

 

[Seqlat]

The electrical connectors fitting at the base and battery lock mechanism at top are a fixed length for the same standard battery, at least on the prebuilt bikes. Someone who has purchased just the frame would be able to confirm if the frame also comes with those already fitted.

Either way, if you're inclined, I suppose you could move or remove them to suit.

Do you mean the battery lock and the base for connecting the battery? I'm not sure, but it only gets you when you buy batteries in addition, and are currently sold with a lower capacity and more expensive. That's why I'm not interested i try build my own.
If you have an E10 frame, can you provide dimensions of the battery space?

 

[Sunburntwily]

LiPo batteries.

 

[Sunburntwily]

Do you mean the battery lock and the base for connecting the battery? I'm not sure, but it only gets you when you buy batteries in addition, and are currently sold with a lower capacity and more expensive. That's why I'm not interested i try build my own.
If you have an E10 frame, can you provide dimensions of the battery space?

LiPo batteries. (Take them out to charge them though) but you can increase your ride time 20-30% in the same size pack. I use them on my diy bbshd and they get me around some heavy up hill riding. 2-3 hours. The last hill on the way home is so steep it's hard to keep the front wheel down. Just saying if your going to build your own pack might be an option.

 

[Dengfu]

Do you mean the battery lock and the base for connecting the battery? I'm not sure, but it only gets you when you buy batteries in addition, and are currently sold with a lower capacity and more expensive. That's why I'm not interested i try build my own.
If you have an E10 frame, can you provide dimensions of the battery space?

Yep, battery lock and battery base.

On my pre-built, the battery space is approximately the same as the battery dimensions.

 

[Waynemarlow]

Guys aren't you getting a bit over excited about actually how much W/h's you really need. I'm using Samsung 50E 21700 batteries in 14S3P format. I've yet to fully flatten it ( I'm only using about 500W/h's ) over 3 hrs of riding, doing in excess of 1K metres of climb all on single track and often steep climbs.

Now that battery pack is nearly 800W/h's, fits easily in the battery compartment ( its less than the length of the cover ) so I reckon pretty easily 4- 5 hours of riding, I don't want to do any more than that.

If you really want to push things I reckon you could get a 14S4P pack of Samsung 50E batteries in there but you will be up around 4 kilos of battery and would you use the 1000 W/h's ever ?

 

[Puschtrale]

Can someone explain what these two parts (came with the frameset) are for?

 

[Seqlat]

View attachment 59131

Can someone explain what these two parts (came with the frameset) are for?

for battery lock?(I'm just shooting)

 

[patdam]

it is an update about 1st rev (mine). provided to fix the battery charger connector on frame i think

 

[Seqlat]

Guys aren't you getting a bit over excited about actually how much W/h's you really need. I'm using Samsung 50E 21700 batteries in 14S3P format. I've yet to fully flatten it ( I'm only using about 500W/h's ) over 3 hrs of riding, doing in excess of 1K metres of climb all on single track and often steep climbs.

Now that battery pack is nearly 800W/h's, fits easily in the battery compartment ( its less than the length of the cover ) so I reckon pretty easily 4- 5 hours of riding, I don't want to do any more than that.

If you really want to push things I reckon you could get a 14S4P pack of Samsung 50E batteries in there but you will be up around 4 kilos of battery and would you use the 1000 W/h's ever ?

View attachment 59129

View attachment 59130

Why did you build a 52v package? Is it not unhealthy for the engine? There are no engine errors? Do you use a special firmware? How does this relate to driving time in relation to 48v? Or have you added more batteries for more capacity?

 

[Puschtrale]

Assemble headset: Hi guys, the parts of the headset came and as i never installed one I wanted to ask help for the right way of assembling it. Can someone help me also by telling me the if I did bring themto the right sequence?

 

[Puschtrale]

View attachment 58812
from Endless sphere

Is there anything similar available for the bafang m500? Would need also to know how to guide cables around the motor.

 

[Puschtrale]

for battery lock?(I'm just shooting)

No, the battery lock is working fine.

 

[RyeNiel]

Question. Is it necessary to update the motor firmware???

 

[Waynemarlow]

Why did you build a 52v package? Is it not unhealthy for the engine? There are no engine errors? Do you use a special firmware? How does this relate to driving time in relation to 48v? Or have you added more batteries for more capacity?

Sorry I don't use the Bafung motor, but I believe the M600 can be run on 52 volts OK, you would need to confirm that though. Perhaps check on the Endless Sphere M600 thread as I had asked that question there.

Why 52 volt packs ? From historical musings it was deemed for electric motors, the higher the voltage the less amperage needed, giving less heat at higher Watts with a bonus of higher cadence. All things I wanted.

However its now 2021 and engine developers seem to have got around the heat problems, the low cadence and still manage to pack a punch using techniques such as Field Weakening at 36 volt and 48 volts.

However having watched the major motor manufacturers move from 24 volts ( first Ebike motor I owned ), then 36 volts and now 48 volts, its only going to be a matter of time before 52 volts is fashionable and the likelyhood of ending up at 72 volts which is deemed the most efficient

Capacity wise there's not too much in it, but for very little extra space the 3 extra cells ( which means the pack is only 21mm longer ), you get an extra 60- W/h's

 

[Sunburntwily]

Sorry I don't use the Bafung motor, but I believe the M600 can be run on 52 volts OK, you would need to confirm that though. Perhaps check on the Endless Sphere M600 thread as I had asked that question there.

Why 52 volt packs ? From historical musings it was deemed for electric motors, the higher the voltage the less amperage needed, giving less heat at higher Watts with a bonus of higher cadence. All things I wanted.

However its now 2021 and engine developers seem to have got around the heat problems, the low cadence and still manage to pack a punch using techniques such as Field Weakening at 36 volt and 48 volts.

However having watched the major motor manufacturers move from 24 volts ( first Ebike motor I owned ), then 36 volts and now 48 volts, its only going to be a matter of time before 52 volts is fashionable and the likelyhood of ending up at 72 volts which is deemed the most efficient

Capacity wise there's not too much in it, but for very little extra space the 3 extra cells ( which means the pack is only 21mm longer ), you get an extra 60- W/h's

Well someones done their homework ?. I like the idea that one day a bike might be able to ride a weekend on one charge. I have a bbshd (still waiting for my e10) at the moment running on LiPo batt. 44volts. LiPo last a long time and the bike is a lot of fun. But normally people run these set ups on 52volts and I have been told the performance is much better then mine. So I can see 72volts in the horizon as you say.

 

[Sunburntwily]

Battery turned up today unannounced. Just waiting on the frame now.

 

[markus datgloi]

Assemble headset: Hi guys, the parts of the headset came and as i never installed one I wanted to ask help for the right way of assembling it. Can someone help me also by telling me the if I did bring them to the right sequence?

Check youtube, example includes assembly :