Dengfu E22 Frame Thread

[Daxxie]

Deciding on a motor you haven't ridden, and that you can hardly test ride anywhere, is always tough, you read so many different opinions. What I can tell you is that even Bosch Gen3 didn't feel right to me in terms of "naturalness". Only the Gen4 feels okay to me, but just in terms of how natural and agile it feels when pedaling, I would still prefer a Brose or Shimano EP8(000) over it.

You can also get a Dengfu E04 with E06 rear triangle to make a Shimano EP8000 fatbike

 

[Coldfire]

Hey,
Can anyone confirm if this shock fits ?
https://www.bike24.com/p2330770.html
Thanks

 

[bram.biesiekierski]

Hey,
Can anyone confirm if this shock fits ?
https://www.bike24.com/p2330770.html
Thanks

It looks like it will fitt

 

[Cruz E Bikes]

Yes

Hi Bram,
One more thing do you have drawings of the battery sizes to fit both of these frames, Dengfu won't supply me with the batteries as they say they cant ship to NZ, so I am having to source from elsewhere, but I can't get a sensible answer from them.
I have ordered two frames off them and now they tell me they don't come with the battery case fitted either, I have asked them which battery will fit into frame.

 

[bram.biesiekierski]

Hi Bram,
One more thing do you have drawings of the battery sizes to fit both of these frames, Dengfu won't supply me with the batteries as they say they cant ship to NZ, so I am having to source from elsewhere, but I can't get a sensible answer from them.
I have ordered two frames off them and now they tell me they don't come with the battery case fitted either, I have asked them which battery will fit into frame.

Im sorry no I don't have that info. But I'm sure others can chime in. I believe it's sort of a standard size.

I have heard that you can perhaps buy the empty battery case from aliexpress???

If Dengfu won't send the batteries, atleast make sure they include the battery mounting hardware. That way you may be able to find the batteries elsewhere, or atleast get the empty case and go from there

 

[Mabman]

Hi Bram,
One more thing do you have drawings of the battery sizes to fit both of these frames, Dengfu won't supply me with the batteries as they say they cant ship to NZ, so I am having to source from elsewhere, but I can't get a sensible answer from them.
I have ordered two frames off them and now they tell me they don't come with the battery case fitted either, I have asked them which battery will fit into frame.

I got my batteries from [email protected].. The 840wh battery that came with my E22 Dengfu was a disappointment from the get go I thought . The 52v 15ah/780wh DT battery with a 40A BMS has been working much better. The switch from 18650 cells to 21700 cells helps wake up a M620. Price is very reasonable also and no problem shipping to NZ that I know of but Herbert will. He will have the measurements of the battery also to share. He sent them to me last winter but I'm too lazy to go back and look for them.

 

[Cruz E Bikes]

I got my batteries from [email protected].. The 840wh battery that came with my E22 Dengfu was a disappointment from the get go I thought . The 52v 15ah/780wh DT battery with a 40A BMS has been working much better. The switch from 18650 cells to 21700 cells helps wake up a M620. Price is very reasonable also and no problem shipping to NZ that I know of but Herbert will. He will have the measurements of the battery also to share. He sent them to me last winter but I'm too lazy to go back and look for them.

I've got the M510 & M600 kits along with 2 x 48v 17.5ah Batteries on order from from Bruce at fltebike.com, after checking quite a few other post and online details I'm 99% sure these are the correct size and will fit the bikes, just need to make sure Dengfu fit the mounting hardware.

 

[Daxxie]

Hi Bram,
One more thing do you have drawings of the battery sizes to fit both of these frames,

Battery case

 

[bram.biesiekierski]

While we are talking batteries. Does anyone know the config of the standard batteries? How many cells do they have? Are they of any name brand, or unknown Chinese cells.

 

[Daxxie]

While we are talking batteries. Does anyone know the config of the standard batteries? How many cells do they have? Are they of any name brand, or unknown Chinese cells.

I hear they use Samsung 35E cells 13S5P = 840wh
But when I bought mine from Dengfu together with an E23 frame I got this:

Samsung 32E Which is only 768Wh
It had a tiny 20Amps BMS. Absolutely not suited for My Bafang Ultra.
So I complained but they told me there is nothing they could do!!
So if you want to order from Dengfu insist on a 840Wh battery and a 30Amp BMS

 

[bram.biesiekierski]

I hear they use Samsung 35E cells 13S5P = 840wh
But when I bought mine from Dengfu together with an E23 frame I got this:
View attachment 93286

Samsung 32E Which is only 768Wh
It had a tiny 20Amps BMS. Absolutely not suited for My Bafang Ultra.
So I complained but they told me there is nothing they could do!!
So if you want to order from Dengfu insist on a 840Wh battery and a 30Amp BMS

View attachment 93287 View attachment 93288 View attachment 93289

Wow. So you have checked and conclusively found your battery is not as advertised?

I just went and had a look at my battery now. I don't really want to open it up. But this is what the sticker says atleast.

 

[Daxxie]

Wow. So you have checked and conclusively found your battery is not as advertised?

I just went and had a look at my battery now. I don't really want to open it up. But this is what the sticker says atleast.

Yes I wanted to check if there was space for 70cells so I could make a 52V battery.
But there wasn't

Yours are LGMJ1 3500mAh cells. Great specs for a Std Bafang Ultra or a M500/600

 

[El Topo]

You can also get a Dengfu E04 with E06 rear triangle to make a Shimano EP8000 fatbike
View attachment 93229 View attachment 93230

Interesting, I always assumed that this Lamere is also a Dengfu frame, but was never able to confirm that. So you can mix and match more of those rear ends?
Given that adapting a smaller motor seems like a dead end, the M510 seems as unreliable as its predecessors,I am back to square one and now have to decide if I am willing to ride around that bulky motor, innotraced or not.

 

[Cruz E Bikes]

Battery case

View attachment 93274

Yep looks like these are same size as I've ordered, 48v 17.5ah Samsung 3500 cells 65 pcs @ $365usd

 

[BonBond]

You can also get a Dengfu E04 with E06 rear triangle to make a Shimano EP8000 fatbike
View attachment 93229 View attachment 93230

that is a beast

 

[BonBond]

Apologies for the delay @agro_86.
In order to set the wheel size (or change wheel size & circumstance) on CANBus protocol motors, the besst tool is required.
I have seen examples of those who have set wheel size and top speed without the besst tool through a hack (I think a thread on Endless Sphere covered this).

The UART protocol motors can be setup (in terms of wheel size, top speed etc) via the display. The programming cable and programming tool is usually used to amend torque values, maximum current, nominal and peak output per level of assist etc.

So yes, the UART protocol motors are easier to work with to dial in the motor characteristics and power performance.

Bare with me, I'll see if I can find the thread on Endless Sphere which goes into detail about bypassing the use of the Besst tool

Hey @Neeko DeVinchi (or anybody else who has tweaked them), are you up for sharing your tweaked settings (UART)?

 

[BonBond]

Yes I wanted to check if there was space for 70cells so I could make a 52V battery.
But there wasn't

Yours are LGMJ1 3500mAh cells. Great specs for a Std Bafang Ultra or a M500/600

You're absolutely, 100% sure there wasn't? I've ordered an empty case from Dengfu, to have the battery built here...and was (not so secretly) hoping I could get 70 cells in the 65 cell case...

 

[BonBond]

My frame has finally shipped, 4 weeks after ordering - ETA two weeks, I'm so excited.

Question for anybody: what have you folks done to replace the stock M620 chainring? I've seen the Christini Bicycles spider, but I'm not looking for tiny, just a few less teeth really (and that feels too pricey at this point in time), any other options out there?

 

[Neeko DeVinchi]

Hey @Neeko DeVinchi (or anybody else who has tweaked them), are you up for sharing your tweaked settings (UART)?

Apologies @BonBond. I'll hook my bafang configuration tool onto the E22 in the morning and screenshot my parameters and share them

 

[Neeko DeVinchi]

My frame has finally shipped, 4 weeks after ordering - ETA two weeks, I'm so excited.

Question for anybody: what have you folks done to replace the stock M620 chainring? I've seen the Christini Bicycles spider, but I'm not looking for tiny, just a few less teeth really (and that feels too pricey at this point in time), any other options out there?

You could always go down to a 38t 130bcd chainring
I haven't found any which are optimised for 11/12 speed. But I have seen some who have ran the Raceface 40t chainrings with an 11spd setup with the M620.

 

[bram.biesiekierski]

My frame has finally shipped, 4 weeks after ordering - ETA two weeks, I'm so excited.

Question for anybody: what have you folks done to replace the stock M620 chainring? I've seen the Christini Bicycles spider, but I'm not looking for tiny, just a few less teeth really (and that feels too pricey at this point in time), any other options out there?

After destroying a 12spd e13 helix cassette in less than 50kms, using a 36t chainring. I went back to the standard 44t chainring, and went with a 9spd box prime groupset.

I have exactly the same top gear ratio with the 44t : 11t box prime high gear, as I did with the 36t : 9t e13 top gear.

Both the 12spd and the 9spd have 50t low gears. So I did lose low end gear range when i went to the 44t / 9spd combo. But this has not been a problem with the bike. The bafang ultra assistance does not really need low gears. Even on steep climbs.

I would strongly advise against using a smaller chainring. Using a smaller chainring increases the force into the chain, and increases the force into the cassette at a given torque input - because physics. It also means you to use a lower teeth count rear gear to get an equivalent gear ratio. Less teeth in contact with the chain, while also more force into the chain/cassette is going to cause you problems sooner.

 

[rivets]

You could always go down to a 38t 130bcd chainring
I haven't found any which are optimised for 11/12 speed. But I have seen some who have ran the Raceface 40t chainrings with an 11spd setup with the M620.

Yep, I run a 40T 130bcd chainring off of a Frey on my 11spd GX drivetrain. Works great and direct fit. No issues.

 

[Daxxie]

You're absolutely, 100% sure there wasn't? I've ordered an empty case from Dengfu, to have the battery built here...and was (not so secretly) hoping I could get 70 cells in the 65 cell case...

I got some empty cases and experimented.
Didn't see any extra space unless you don't use a BMS and modify one of the endcaps.

I also wanted 52V and went for 14S5P 21700 but had to make quite some frame modifications which I wouldn't recommend.
Now working on a 14S4P 21700 (52V 20Ah 1040Wh) that fits in the frame without modifications.
Case will be 3D printed.

 

[bram.biesiekierski]

I got some empty cases and experimented.
Didn't see any extra space unless you don't use a BMS and modify one of the endcaps.
View attachment 93401

I also wanted 52V and went for 14S5P 21700 but had to make quite some frame modifications which I wouldn't recommend.
Now working on a 14S4P 21700 (52V 20Ah 1040Wh) that fits in the frame without modifications.
Case will be 3D printed.
View attachment 93404
View attachment 93403

That looks cool. Did you make those plastic spacers? Could you fit 2 more cells up on top under the frame cover?

 

[Daxxie]

That looks cool. Did you make those plastic spacers? Could you fit 2 more cells up on top under the frame cover?

No. This barely fits. And I prefer some spacers between cell groups.

However you can put 15x18650 cells in the frame.

Like that you can make quite a compact 14S5P
But for max. capacity the 21700's are the better choice.

 

[El Topo]

I also wanted 52V and went for 14S5P 21700 but had to make quite some frame modifications which I wouldn't recommend.
Now working on a 14S4P 21700 (52V 20Ah 1040Wh) that fits in the frame without modifications.
Case will be 3D printed.
View attachment 93404
View attachment 93403

This looks great, but where does one run all the wiring in the downtube? On top of the battery?

Are you planning to sell these?

 

[BonBond]

I got some empty cases and experimented.
Didn't see any extra space unless you don't use a BMS and modify one of the endcaps.
View attachment 93401

I also wanted 52V and went for 14S5P 21700 but had to make quite some frame modifications which I wouldn't recommend.
Now working on a 14S4P 21700 (52V 20Ah 1040Wh) that fits in the frame without modifications.
Case will be 3D printed.
View attachment 93404
View attachment 93403

That's superb work, what are you modelling in and how far off printing the case do you think you are? The 21700 cell approach is an interesting angle too.

 

[Daxxie]

That's superb work, what are you modelling in and how far off printing the case do you think you are? The 21700 cell approach is an interesting angle too.

Fusion 360.
Will take another week or two.

Yes 21700 looks better.
Samsung 50E's are relatively cheap. (3.75€ @ Nkon)
18650 in 5P max 17.5Ah
21700 in 4P 20Ah

This looks great, but where does one run all the wiring in the downtube? On top of the battery?

Are you planning to sell these?

Cables run between frame and battery. There is enough room.



Yes I might sell some. I make a lot of custom batteries.

 

[Neeko DeVinchi]

Apologies everyone, I should have updated you all sooner. However,

Search results for: 'Dengfu' BBS, ebike batteries, Bafang M620, Bafang M600, Bafang M500, Bafang M510, KT controller with display-GreenBikeKit.com

Greenbikekit is a professional electric bike kit manufacturer, e-bike battery building, Bafang BBS kit, Bafang m620 kit, Bafang M600 kit, Bafang M560 motor, Bafang M510, Bafang M200, Bafang M400, Bafang M420 repair, Baffang M300 repair, Bafang motor repair parts distributor, bafang M400...

www.greenbikekit.com

GBK is now selling both E10 frames and E22 frames along with spares.

Key locking mechanism

Dengfu E22/E10 840wh Battery

Dengfu E22 frame

Dengfu E10v1 frames

GBK have explained that they do sell the 52v batteries as well. In fact, they have other dengfu related items which they haven't made dedicated pages for. Reach out to Anna @ [email protected] for any enquiries.

And yes, they do ship internationally (my bit to help the US and Canadian members who have pm'd me ).

And yes, GBK is trust worthy.

 

[BonBond]

Yep, I run a 40T 130bcd chainring off of a Frey on my 11spd GX drivetrain. Works great and direct fit. No issues.

Cheers, I contacted Fray - polite, nice as pie, but zero interest in selling me spares as I don't have a Fray bike....I guess I need to find somebody with a Fray if I wanted to go down that route.