Dengfu E10 - The CHEEB V1.0 - Discussion

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Assembling my E10 frame:

Does someone know where these four ~20mm o-rings should go?

unknown-o-ring.jpg


My E10 frame came from Dengfu completely disassembled (it seems earlier frames came pre-assembled with a plastic rear shock spacer).

In addition to the five main frame pieces & shock mount, there's a little bag with three dozen bolts and washers etc. Many of them are subtly (but importantly!) different. Four washers already have o-rings fitted in a 1mm groove. No other washers have a similar groove (though many have a one-sided lip, which despite trying, will not reliably hold an o-ring).

bolts-washers.jpg

washer-with-o-ring.jpg


Melody very kindly shared an assembly video with me taken in the Dengfu factory (showing assembly of a branded bike for the US market ;)) which has made it pretty easy to do a dry-run build, making sure I have all the right parts.

But... I have four rubber o-rings roughly 20mm in diameter that I do not see used in the assembly video???

My thoughts are:

1. These are spare o-rings in case the pre-fitted ones on the four washers are damaged. (unlikely I think)
2. These o-rings should go between the shock bushings and frame articulation points (see image below & red arrows) to protect the bushings from moisture.
3. They're intended for another articulation point????

rear-shock.jpg


Thanks for your help!
 
djol said:
Assembling my E10 frame:

Does someone know where these four ~20mm o-rings should go?

View attachment 89088

My E10 frame came from Dengfu completely disassembled (it seems earlier frames came pre-assembled with a plastic rear shock spacer).

In addition to the five main frame pieces & shock mount, there's a little bag with three dozen bolts and washers etc. Many of them are subtly (but importantly!) different. Four washers already have o-rings fitted in a 1mm groove. No other washers have a similar groove (though many have a one-sided lip, which despite trying, will not reliably hold an o-ring).

View attachment 89089
View attachment 89090

Melody very kindly shared an assembly video with me taken in the Dengfu factory (showing assembly of a branded bike for the US market ;)) which has made it pretty easy to do a dry-run build, making sure I have all the right parts.

But... I have four rubber o-rings roughly 20mm in diameter that I do not see used in the assembly video???

My thoughts are:

1. These are spare o-rings in case the pre-fitted ones on the four washers are damaged. (unlikely I think)
2. These o-rings should go between the shock bushings and frame articulation points (see image below & red arrows) to protect the bushings from moisture.
3. They're intended for another articulation point????

View attachment 89091

Thanks for your help!
Click to expand...
They go on the spacers that go between the joints for the seat stay and chain stay pivots.

The spacers have a machined groove to accept the o rings on thier outer circumferecne. Although, looking at the counter bore they go into, I very much doubt they would do anything.
 
Anyone fitted one of these, is it the same tool as a BOSCH mid-drive?
1653835984498.png

The Bosch one seems to look right but I'd rather confirm that someone has used it before ordering. I'm using the old silver lockring from the M600 at the moment which works with the tool I already have, but I'd rather use the one supplied with the M510 below.
1653835669664.png
 
captainhightop said:
Anyone fitted one of these, is it the same tool as a BOSCH mid-drive?
View attachment 89118
The Bosch one seems to look right but I'd rather confirm that someone has used it before ordering. I'm using the old silver lockring from the M600 at the moment which works with the tool I already have, but I'd rather use the one supplied with the M510 below.
View attachment 89117
Click to expand...
I think it fits and I ordered it still in shipping, in case you're not in a hurry I'll let you know after testing.
 
Finally finished and really pleased with set up. First time using a coil and I am converted! 216x63 Cane Creek with Progressive Valt coil. 170mm front travel. Being XL it is big but suits me (192cm and 98kg).
PXL_20220519_173240767.jpg
PXL_20220517_161601174.jpg
PXL_20220519_173155116.jpg

With a bit of care I also managed to fit the standard Bafang chain guard with no modification or rubbing. Just needs to go as far forward as possible.
 
Alan Simpson said:
Finally finished and really pleased with set up. First time using a coil and I am converted! 216x63 Cane Creek with Progressive Valt coil. 170mm front travel. Being XL it is big but suits me (192cm and 98kg). View attachment 89282View attachment 89280View attachment 89281
With a bit of care I also managed to fit the standard Bafang chain guard with no modification or rubbing. Just needs to go as far forward as possible.
Click to expand...
Nice Build! 😍
Is the motor M600 and what is the chainring size?
 
SchadowMaster said:
Nice Build! 😍
Is the motor M600 and what is the chainring size?
Click to expand...
I went for the M500 to stay legal. It is definitely less powerful that a Bosch, but to be honest I want (and need) to feel like I have put some effort into a ride so the M500 is very natural and quiet and works for me.
The chainring is the standard one that comes with the motor - 34T I believe......
 
The tool is compatible with this lock ring from Bosch, but can we use this ring to tighten the chainring with Bafang M510 motor?
I'm looking for a solution because I don't have an extra old lock ring.
This is cheaper than the old Bafang lock ring and more available for sale.
Screenshot_20220603-171907_Chrome.jpg
 
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today i tried trickstuff power brake pads. very good modulation, strong braking, overheating resistant, quiet. recommendation
 
Alan Simpson said:
I went for the M500 to stay legal. It is definitely less powerful that a Bosch, but to be honest I want (and need) to feel like I have put some effort into a ride so the M500 is very natural and quiet and works for me.
The chainring is the standard one that comes with the motor - 34T I believe......
Click to expand...
I put the M600 controller to M500, its still legal, i have 1.1 kW in peak and Bosch may "see rear tyre" ;).
 
SchadowMaster said:
Can you climb steep hills for a long time without the engine overheating and reducing the power?
Click to expand...
Yes, climbing is not a problem - at least for my use-cases. The overheating comes only on long flat, for example 15 minutes of riding around 45-50km/h, but its enough to stop on traffic lights, or slow down a bit and its getting cooler and power back.

But thats also depend of few things, i put more air to tyres (at now i am run mostly on flat) and overheating gone, and finally i have same range, maybe even slightly better, than on stock M500 13A f/w (thats rather cause of pressure, not firmware i think).

In overall i am very happy from this mod, i got what i liked to have since the beginning.

Of course the Bosch is very good and stock engine, probably more durable and less overheating than my mod, but end to end, i see rather no downsides of M500+ (as we know here, the perception and opinion may be different on different person).
Only real possible downside is a risk of melting plastig gear. I got 2 spares, but so far, so good.

I would like to pick the new bosch, but there is no option to connect throttle, or remove the speed limit in some 'clean' way, thats the reason i am on Bafang.
 
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Husky430 said:
Haven't read the whole thread, but just wondering if there are some Chinese manufactures that make Aluminum frames similar to these as not so sure on the whole carbon thing. Just wondering.... and dreaming....
Click to expand...
That is, I myself have been rolling on this for 2 years. I had 2 bikes M620-1000W and M600-500W. Seroxat. Strong, heavy, beautiful. But there are small problems in the back of the triangle with wires that deteriorate over time. Dengfu makes frames much better and more professional.
 
patdam said:
Me to.
Since the begining my M500 have a problem to switch on/off after several time of ride. i have found alternative by invalidating the economic mode who switch off automatically the motor. But this morning it do not start at all.

I'm very angry to dengfu and bafang of this situation. Dengfu answer only if you want to purchase and bafang answer to say that they do not support directely the final customer. I try since several month to avoid that this failure occur. and no way. imopssible to purchase motor spare parts, only comlete motor. I have finally ordered another motor for spare, but time i will recive i can't use my bike.

Disgusted. they have no respect for their customer.
Click to expand...
Have you solved the problem with the faulty motor?
 
patdam said:
yes, bafang service center have returned an standard exchange controler and no more problems
Click to expand...
it is possible that some controllers are not working! i can no longer install firmware in m510. does not receive any fw! on another engine I install without problems!
 
ficorama said:
it is possible that some controllers are not working! i can no longer install firmware in m510. does not receive any fw! on another engine I install without problems!
Click to expand...
Did Bafang say anything, why can't I update the firmware?
 
LAnton said:
Did Bafang say anything, why can't I update the firmware?
Click to expand...
Few people (not me) can communicate directely with bafang, they only want to exchange with the sub-supplier who purchase lot of motor, not the final customer. They have explain me that they have several level of warranty servicies when they sale the motors and the EU service center is only acessible for dealer who purchase motor with this servicie. It's a big problems when you purchase motor to chiness dealer, you need to return the defected parts to the dealer first and wait they deal with bafang. Personally i needed to fight 3 months with bafang for they accept to solve my controler problem and they does it only because nobody could sale me one at this time. Now i prefered to store an spare motor, it's always less expensive than an complete other brand motors.
 
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