Dengfu E 82 in Gold-Color

[Moho7]

Hello,
at first greetings from Germany.
I have now build up my new E-Bike Dengfu E 82 with Bafang M 560,750 Watt Version.
Size Large,special gold color.

Specs:
Formula Cura 4 Brakes in gold,Reverse 203 mm Rotors in Gold,RS Zeb Ultimate 29 Fork with 170mm Travel.
40 mm Stem in gold color.
Magura Veyron Post
Miranda Cranks in 160mm
Deckas Gold Chainring 38t.
Carbon Wheels 6 Spoke with Maxxis Tires.
12 Speed Cassette from ZTTO in gold.
Very nice looking Bike
Hope Headset

Michael

 

[ficorama]

Hello,
at first greetings from Germany.
I have now build up my new E-Bike Dengfu E 82 with Bafang M 560,750 Watt Version.
Size Large,special gold color.

Specs:
Formula Cura 4 Brakes in gold,Reverse 203 mm Rotors in Gold,RS Zeb Ultimate 29 Fork with 170mm Travel.
40 mm Stem in gold color.
Magura Veyron Post
Miranda Cranks in 160mm
Deckas Gold Chainring 38t.
Carbon Wheels 6 Spoke with Maxxis Tires.
12 Speed Cassette from ZTTO in gold.
Very nice looking Bike
Hope Headset

Michael

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Hello. nice bike. is it possible to know how much the bike cost with all the parts? roughly... and what is the weight of the bike. thanks

 

[Moho7]

Hello,
i have not yet weight the bike,this will come on the weekend.
Price for frame,motor and battery with shipping to Germany are in the range of 2.200 €.
Some of the used parts i have in stock and the wheels are also used for other bikes.
The Fox Float X shock was from another E-Bike and measured 230x60mm

 

[Moho7]

Shipping was done with DPD without any tax or other costs.
Ordering from Dengfu.

 

[ficorama]

I know that it is a great pleasure to assemble your bike.
so far I have assembled 3. 2 pieces of e10 and 1 cef50. the bikes are great, but the total cost is too high.
and in the end you get a system that is ok but not comparable to Bosch, Shimano.....
The 1000wh battery has the same range as the bosch 625!

I'm looking at profitability, because now the prices of electric bikes are very favorable.
now I drive Radon deft which with Bosch smart 750wh battery and fox suspension and other fair quality components costs 3800 eur. the bike is very good. for that price top.

 

[E-MAD MALC]

It's a good exercise when building your own
But as said, there are a lot of deals with the so called mainstream companies out there

 

[LAnton]

I know that it is a great pleasure to assemble your bike.
so far I have assembled 3. 2 pieces of e10 and 1 cef50. the bikes are great, but the total cost is too high.
and in the end you get a system that is ok but not comparable to Bosch, Shimano.....
The 1000wh battery has the same range as the bosch 625!

I'm looking at profitability, because now the prices of electric bikes are very favorable.
now I drive Radon deft which with Bosch smart 750wh battery and fox suspension and other fair quality components costs 3800 eur. the bike is very good. for that price top.

You're talking about the power reserve. What kind of bafang engine do you compare with bosch?

 

[ficorama]

You're talking about the power reserve. What kind of bafang engine do you compare with bosch?

sorry, I didn't write that.
I am comparing the engines I have used. m500, m510-3 revisions and m820 with bosch gen4 smart. I understand that bafang is an open system for DIY batteries...

It was a great pleasure for me to assemble and finish the bikes I had. but when I look at it, there will never be progress in firmware, battery percentage and engine drivability.

The m510 has a lot of power, but it cannot be compared to any engine from the leading manufacturers! the biggest complaint is that the m820 shows 20% battery on the screen and the battery voltage is 36v! why do they do that? and currently bosch parts are not as expensive as they used to be.

 

[ficorama]

Radon Render Sale

Buy Brand products online at Bike-Discount Bike Shop: Brand ➤Radon ➤Radon Render Sale ✓ BEST PRICE - Fast Delivery!

www.bike-discount.de

 

[ficorama]

Here is a comparison of Radom Render models. for the price of one e10 that I assembled, I can buy 2 Renders. 1 drive another for parts

 

[ficorama]

don't get me wrong, I don't want to impose my opinion on anyone.
according to me there is no financial calculation! I made sure of that on 2 e10 an one cef50.
but the satisfaction of having assembled the bike myself and riding it is indescribable.
and yet, on the other hand, in terms of driving characteristics on technical climbs, the battery percentage makes no sense.
who knows, maybe I'll put together 4 bikes soon.
as I say, a crazy head does not give peace.

 

[ficorama]

but the frames of those bikes, the geometry suits me as if they were made for me!

new project to install bosch cx in e82 frame

 

[Waynemarlow]

The m510 has a lot of power, but it cannot be compared to any engine from the leading manufacturers! the biggest complaint is that the m820 shows 20% battery on the screen and the battery voltage is 36v! why do they do that? and currently bosch parts are not as expensive as they used to be.

Watts are Watts and electric engine management is pretty mature as far as design and programming goes, it’s perhaps unfair to compare a Bosch Gen4 which is purported to output 850W’s with a Bafang M510 which peaks out at around 750W’s. If you wish to compare my M600 ( which fits in the same motor space ) which outputs over a 1000W’s then the drag race with my fellow Gen4 riders is just a bit one sided.

In my view far too many riders here on these forums mistake initial bursts of power as being the holy grail of how powerful an electric engine is. Having ridden the Bosch motor it’s really punchy, but that has to be coming from somewhere. It can only be coming from the manufacturer programming an initial burst of power even though you maybe are riding in Eco mode, favouring the torque sensor reading over cadence.

Engine designers also design the hardware in ways which favour low cadences through to high cadences through the overall diameter and length of the stator and the way the engine management operates. All the Bafangs like high cadences, it would seem those with low cadence as their go to dislike the Bafang motors. I know my M510 only really likes 70rpm and beyond and to most riders that’s relatively high.

Can I recommend that before you diss a particular motor, find a long and I mean more than 5 minutes of constant climb at about 12-15kph ( that speed takes out the low cadence power bursts ) and ride it with your mates on their bikes. Note who arrives at the top first. Repeat swapping bikes and do it a few times. I will place a bet that the one rider will be first every time regardless of the engine with rider input + motor input = total power winning such is that most manufacturers all design to achieve around 700 to 800W’s max ( best power to engine weight constrained by the 250W ruling + the media hype of engine weight ).

Battery voltage issues on the Bafang engines are very easily overcome with the availability of dongles and now software to alter the engine characteristics regarding battery voltage limitations. I’ve fitted a BBR dongle and can choose what cell voltage is the cutoff.

 

[ficorama]

Watts are Watts and electric engine management is pretty mature as far as design and programming goes, it’s perhaps unfair to compare a Bosch Gen4 which is purported to output 850W’s with a Bafang M510 which peaks out at around 750W’s. If you wish to compare my M600 ( which fits in the same motor space ) which outputs over a 1000W’s then the drag race with my fellow Gen4 riders is just a bit one sided.

In my view far too many riders here on these forums mistake initial bursts of power as being the holy grail of how powerful an electric engine is. Having ridden the Bosch motor it’s really punchy, but that has to be coming from somewhere. It can only be coming from the manufacturer programming an initial burst of power even though you maybe are riding in Eco mode, favouring the torque sensor reading over cadence.

Engine designers also design the hardware in ways which favour low cadences through to high cadences through the overall diameter and length of the stator and the way the engine management operates. All the Bafangs like high cadences, it would seem those with low cadence as their go to dislike the Bafang motors. I know my M510 only really likes 70rpm and beyond and to most riders that’s relatively high.

Can I recommend that before you diss a particular motor, find a long and I mean more than 5 minutes of constant climb at about 12-15kph ( that speed takes out the low cadence power bursts ) and ride it with your mates on their bikes. Note who arrives at the top first. Repeat swapping bikes and do it a few times. I will place a bet that the one rider will be first every time regardless of the engine with rider input + motor input = total power winning such is that most manufacturers all design to achieve around 700 to 800W’s max ( best power to engine weight constrained by the 250W ruling + the media hype of engine weight ).

Battery voltage issues on the Bafang engines are very easily overcome with the availability of dongles and now software to alter the engine characteristics regarding battery voltage limitations. I’ve fitted a BBR dongle and can choose what cell voltage is the cutoff.

it is not fair to compare "legal" motors (250W) and m600, which is much stronger. according to the manufacturer's data, the m510 is 95nm and the cx4 is 85nm. so i think they are comparable. and as I wrote, the m510 has a lot of power. maybe more raw power than the cx4! but the cx4 is more refined! with the m510 i could pedal every hill. but not technically demanding climbs! now with the cx4 I can pedal all the hills as well as with the m510. but I can also do all the technical climbs that I couldn't do with the m510! bosch is more refined motor has smoother power delivery while bafang is more on-off. bafang also has some modulation, but not as much as bosch, that's why on more demanding climbs the front wheel lifts and there is no control.

 

[ficorama]

and what I aimed for was the financial side. totally unprofitable. even some cube, orbea, cannondale... emtb cost less than assembling e10, e81, cef50, lightcarbon..... And they cost 1/3 less and with fair equipment

 

[exomaa]

I dont know how much sense is to compare bikes that you have build in past to bike prices today..? During covid for example buying ready bike or building where both more expensive than today.

I am planning to build Dengfu e82 with m560. My budget is 5500e and with that money and deals in bikediscount and bike24 I should have nice, and economy parts:

Nice
RockShox super deluxe rear shock.
RockShox ZEB Ultimate front.
Mavic Deemax wheelset.
Hope brakes.
Dropepper with 170mm drop.
Nice tubeless tyres.

Economy
Microshift 11speed gears
Generic stemm, bar, and rest things in cockpit.
Saddle.
Pedals.

Over all I think that cost of building your own bike is pretty similar to bikes on sale, but you might get some better parts. And also the headache of finding and installing those parts... Also Bafang motors you can service by your self, what's not the case with "big brands".

 

[ficorama]

I agree, everything has its pros and cons. but you all don't understand what I want to say. it is financially more expensive to DIY. in terms of driving performance, power delivery, modulation, driving on demanding terrain, Bosch, Giant, Specialized are better for me. Because they are more drivable in the forest uphill, the roots of stones... Far from the fact that I have no desire to combine the e82 with the m510, I would very much like to. but I don't see the profitability. The e10 I had before is the nicest bike I've ridden. there is also a picture

 

[ficorama]

as for repairs, 2 years is the guarantee. during that period for repair Bosch, shimano... I don't have any additional costs if it breaks, not so with Bafang. and after 2 years it's time to change the bike

 

[exomaa]

Shipping was done with DPD without any tax or other costs.
Ordering from Dengfu.

How long did it take from ordering till you got your frame, motor and battery to Germany?

 

[ficorama]

moho7 apologies for turning your post into a discussion.

the bike is very nice.

 

[patdam]

as for repairs, 2 years is the guarantee. during that period for repair Bosch, shimano... I don't have any additional costs if it breaks, not so with Bafang. and after 2 years it's time to change the bike

only the failed parts of the motor (if any). At this time for what i know: controler or torque sensor +- 100 euro each. far away of "complete bike".

But your are true. today (for how many time ?). Taking account of curret overstock, it's economically avery bad choice to build an DIY ebike.

 

[ficorama]

only the failed parts of the motor (if any). At this time for what i know: controler or torque sensor +- 100 euro each. far away of "complete bike".

But your are true. today (for how many time ?). Taking account of curret overstock, it's economically avery bad choice to build an DIY ebike.

that this is the current situation. I hope it will last. I ordered an orbea Wild st 2025. I'm not allowed to share the price publicly, but as I wrote, it's a third cheaper than the e10.

and as I wrote. there is no greater pleasure than riding a bicycle that I put together myself. but bafang, battery percentage, firmware.... too unfinished

 

[patdam]

that this is the current situation. I hope it will last. I ordered an orbea Wild st 2025. I'm not allowed to share the price publicly, but as I wrote, it's a third cheaper than the e10.

and as I wrote. there is no greater pleasure than riding a bicycle that I put together myself. but bafang, battery percentage, firmware.... too unfinished

Since i used bafang motors, the battery % never been an problem for my use. i never going down than 30%. enough to climb 1800 D+ with 17 Ah for M510 and 9.6 Ah with M820, usually i climb +- 1500. what else ?

 

[ficorama]

Since i used bafang motors, the battery % never been an problem for my use. i never going down than 30%. enough to climb 1800 D+ with 17 Ah for M510 and 9.6 Ah with M820, usually i climb +- 1500. what else ?

I didn't have any problems with the battery either. but the problem is the firmware. bafang 800 wh battery on bafang motors has 30-40% less range than similar battery from Bosch, Giant. this is probably the situation with motors purchased directly. "factory firmware" Firmware developed for a specific manufacturer, VMG, Vitus... does not have these defects. The Bosch battery is at 20% voltage around 33v, while I measured the voltage at 36v and it showed 20% on the screen. They probably give such firmware for free sale of motors because they don't know which batteries we use. probably for the reason of protecting the engine, electronic components....

 

[ficorama]

I admit, and so do you, DIY, that ebikes are currently too expensive at the prices given by the big manufacturers. It makes no sense to me to pay 6000 eur+ for Dengfu-Bafang. that it has components such as Rock shox zeb, sram gx, magura brakes..... and finally a questionable warranty.
Colleagues from the forum remember the problems with the m510 fc1.0, the engine was on-off, when starting it you had to wait for it to initialize, all in all a semi-finished product.
We all wrote to Bafang but there was no help.
When I asked for a waranty, I received the answer that it is possible, but I have to pay the shipping costs myself!
That means I have no use for the 2 engines I paid for, about 1000 euros wasted!
if such a thing happened to Bosch or Shimano, they would get a new firmware upgrade. if that didn't help, they would replace the engines!

you all have to accept that and admit that the support from bosch, specialized, shimano, giant..... is much better than bafang! and that Diy bikes are too expensive for what you get!

and the most important thing, none of those bikes are legal in the EU! because they have not been tested for the European market.

 

[patdam]

I admit, and so do you, DIY, that ebikes are currently too expensive at the prices given by the big manufacturers. It makes no sense to me to pay 6000 eur+ for Dengfu-Bafang. that it has components such as Rock shox zeb, sram gx, magura brakes..... and finally a questionable warranty.
Colleagues from the forum remember the problems with the m510 fc1.0, the engine was on-off, when starting it you had to wait for it to initialize, all in all a semi-finished product.
We all wrote to Bafang but there was no help.
When I asked for a waranty, I received the answer that it is possible, but I have to pay the shipping costs myself!
That means I have no use for the 2 engines I paid for, about 1000 euros wasted!
if such a thing happened to Bosch or Shimano, they would get a new firmware upgrade. if that didn't help, they would replace the engines!

you all have to accept that and admit that the support from bosch, specialized, shimano, giant..... is much better than bafang! and that Diy bikes are too expensive for what you get!

and the most important thing, none of those bikes are legal in the EU! because they have not been tested for the European market.

? where have you seen that each other "big manufacturer" bike are "tested" for the european market ? you are true about the curent economical nonsense to build DIY ebike (but everybody don't act in function of ecomical interest ) and also for the first rev of M500 (but now we are at M510). Why you estimate necessary to add another fake arguments to discredited the bafang motor ?

 

[ficorama]

? where have you seen that each other "big manufacturer" bike are "tested" for the european market ? you are true about the curent economical nonsense to build DIY ebike (but everybody don't act in function of ecomical interest ) and also for the first rev of M500 (but now we are at M510). Why you estimate necessary to add another fake arguments to discredited the bafang motor ?

I am writing about the first version of the m510 engine! and he had a lot of problems. fc1.0 had v.1 v.2 we are not sure which fw is for which version. read on the forum about m510 motors. and as far as I know all electronic components and all products must be tested for the European market! from European institutes. and meet the regulations. all bikes you buy in the store have a declaration of conformity with European standards or the standards of a certain country.

is it so hard to admit that diy ebike is not profitable financially? I admit that in the segment up to 250w we call it "legal" is not profitable. if someone wants m600 m560 or a stronger engine then there is not much choice.

 

[LAnton]

I am writing about the first version of the m510 engine! and he had a lot of problems. fc1.0 had v.1 v.2 we are not sure which fw is for which version. read on the forum about m510 motors. and as far as I know all electronic components and all products must be tested for the European market! from European institutes. and meet the regulations. all bikes you buy in the store have a declaration of conformity with European standards or the standards of a certain country.

is it so hard to admit that diy ebike is not profitable financially? I admit that in the segment up to 250w we call it "legal" is not profitable. if someone wants m600 m560 or a stronger engine then there is not much choice.

My first version of the M510 motor is still running today. A friend bought it from me and he is very pleased with it. There were no problems with the M510 engine. It works very quietly and smoothly. How many engines do you know of the first version with big problems?

 

[ficorama]

I didn't even write that the engine was not working. but that there are problems, no modulation, it's off, when starting, you have to wait a minute for it to initialize... now it will turn out that not a single Bafang motor has any problems? does your m820 work as the manufacturer wrote? I don't know if anyone has rocky mode working on the m820?

and you don't understand what I wrote in the whole text so far. you can buy a better product for less money! that's my opinion. and you justify Bafang as much as you want, but their products are unfinished.

 

[kaaskopf]

to say their products are not finished is a bit rude no?

the current m560 and m510 work very well, but it is up to you how you build and setup everything. so user experience may vary.

like some users do not check factory bolt torque and do not put loctite but they do complain about loosing bolts...

especially in FW department and fine settings like PAS level adjustment there is room from improvement from the factory. i set everything myself and im very happy with these engines. but again it requieres some input from your side


like all stuff it requires some knowledge and skill to be happy with the end results and that is not for everybody...

DIY building is for people who like to tinker with their own stuff and not be reliable of others.
nobody talks about 'profitability' because we are not looking for profit.

I think most people here just like to spec their own bikes and have fun.

Myself i like to build bikes with specs you cannot get for the money otherwise. like my recent kunlun superenduro build.
yes it was 5K and it weighs 25kg, but if you compare specs you cannot get similar build specs in any of the big brand bikes

if you think you can please show me and i will buy it!
-carbon frame and wheels
-quality components rated for usage of the bike (e- enduro)

most factory build bikes have trail tires and basic trail suspension to keep price and weight down. but who wants that??!

even if you build an ultra light bike like cef50 with decent suspension and decent wheels/tires it will still weigh 22/23kg... because of components choices!

but an enduro with flimsy suspension and trail tires suck, yet this is what the whole industry is doing atm.

i have been using these motors for the last 4,5 years and never had any big problems.
the problems i did have were
- broken display because of an crash
- 1 broken bearing in my oldest m600 motor due to moisture ingress( which was easy to diy replace)

as i ride all year mostly in muddy wet conditions i think its fair to say it has turned out to be reliable enough for me.

biggest selling point of the bafang system is that you can service and repair it yourself which with many brands you cannot and you end up bring it to a lbs hoping they can help you within a few weeks... only be be charged an arm and leg for an software update or small part after 9 weeks of waiting