My Chinese frame and motor build. The CHEEB, V1.0 - Build Thread

marcos

Member
May 20, 2019
43
19
madrid
Hi, anyone with the E10 at home can tell me if the inside of the seat tube is completely straight so it can acomodate a big dropper seat post??? In theory size M has 440mm of seat tube, this is espace enough but, I don't know if the inside is unobstructed....
 

marcos

Member
May 20, 2019
43
19
madrid
Another question, how much tall are the head set, how many mm add it to the HT parameter of the E10 specs????
 

Rob Rides EMTB

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Jan 14, 2018
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Great news ?. Do you know if new ordered motors and batteries from Tony will already be updated the same way as yours you'll receive? So new motor firmware?
I have no idea. I don't even know what is being sent! I will definitely have some questions when I get it.
 

Puschtrale

Active member
Jan 19, 2021
220
166
Dobbiaco
I have no idea. I don't even know what is being sent! I will definitely have some questions when I get it.
Hm, would appreciate if it wouls be so. Dont know if motor and battery are coming from Tony or directly from bafang. If they are coming from bafang we all will hope to get new firmware without being you ?
 

Rob Rides EMTB

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Hm, would appreciate if it wouls be so. Dont know if motor and battery are coming from Tony or directly from bafang. If they are coming from bafang we all will hope to get new firmware without being you ?
My assumption is that if the new firmware is good to go then it'll be rolled out to others. You'd just need to find a Bafang dealer who would be able to update it.
 

Rob Rides EMTB

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Its a very thorough article.

But it even states that the Specialized Levo Frameset, a CE mark isn't required... therefore illegal in Germany without correct end user certification after they've built up a complete bike - I think.. .am I reading that correctly?

So no difference between that and a CHEEB in terms of German law as far as I can work out?!

The S-Works Turbo Levo frameset can be purchased from Specialized for € 5,999. We talked with Dominik Geyer, Leader Global Turbo Business at Specialized, about what you have to consider when buying a Levo frameset to build your own ebike.

E-MOUNTAINBIKE: Do you receive an EC conformity declaration and a CE mark with the purchase of a frameset?

Specialized: Yes. We sell the frameset as an “incomplete machine” with all required technical documentation and a declaration of incorporation. A CE mark isn’t required here.

E-MOUNTAINBIKE: Having assembled CE-marked components, has the customer fulfilled the requirements of the Machinery Directive or do they have to do anything else?

Specialized: The customer just has to make sure that the complete bike conforms to the clauses of the currently applicable directives and that the conformity assessment has been carried out according to them."
 

patdam

Well-known member
Jan 17, 2019
889
598
france
Very worked article certainly. But me, what I notice it is the advice several times repeated not to launch out. Especially when he says that it is better to buy a second hand because he "doubts" that the DIY is as well than a commercialized E-bike. Is that journalism ?
 
Feb 27, 2020
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home
These rules apply to the EU and Rob is not living anymore in the EU...

From the article :
CE marking is the responsibility of the manufacturer and only rarely is the product independently tested. In the first instance, this mark is a type of promise. It says that a product meets relevant EU standards and has been tested accordingly. Every bike that you buy online or in a shop must have a CE mark.

ce_mark.jpg


I have mailed EBIKE-MTB and explained that I have an YT Decoy 29 that does not have an CE mark sticker on the ebike, like SCOTT, nor a CE declaration in the YT documentation, nor can I find the word EPAC in the documentation. The YT documentation only has a "CE EU12000mAh" mark for the battery. Now what ? Did I buy something that doesn't have a conformity declaration ? No CE mark ? Have they checked all tested ebikes for this CE mark ?
I also asked TOSA for the CE mark on their AM 1.0 .
 
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patdam

Well-known member
Jan 17, 2019
889
598
france
These rules apply to the EU and Rob is not living anymore in the EU...

From the article :
CE marking is the responsibility of the manufacturer and only rarely is the product independently tested. In the first instance, this mark is a type of promise. It says that a product meets relevant EU standards and has been tested accordingly. Every bike that you buy online or in a shop must have a CE mark.

View attachment 52759


I have mailed EBIKE-MTB and explained that I have an YT Decoy 29 that does not have an CE mark sticker on the ebike, like SCOTT, nor a CE declaration in the YT documentation, nor can I find the word EPAC in the documentation. The YT documentation only has a "CE EU12000mAh" mark for the battery. Now what ? Did I buy something that doesn't have a conformity declaration ? No CE mark ? Have they checked all tested ebikes for this CE mark ?

+1 alike my previous spectral on. In add i think i have the sticker "CE" on the M500, i will not dismantle to control, but those who have one can confirm ?
 
Feb 27, 2020
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home
I confirm. There is a "CE" mark on the M500 motor

In the end its just a sticker. I have not seen some sort of official registration number coming with the CE mark.
Even the SCOTT CE mark is just a sticker, proving nothing but at least it has 2 addresses which you can visit when the ebike breaks down.
You can buy the "CE" stickers from Aliexpress starting at about 2 $ for a few 100pcs. Even a nice BBS01B one (1) for $1.55

ce_mark_2.jpg


But it is not about the sticker... is it ?
Tosabikes in Poland, in the EU, is selling the Dengfu E10 as their AM 1.0 . I wonder if it has a CE mark...???
 

m.john

Member
Feb 14, 2021
12
9
Germany
Hi Rob,
just stumbled over the video and thread about the CHEEB.
Very interesting project if you consider the flexibility and options with regards to geo and motors. From M800 (light EMTB) and M500 (legal EU power option) to M600 (S-Pedelec type but not street legal) with the respective battery capacities you get a huge range of weight and performance options. Not talking about the frame geo with different folks (150-180mm), shocks (types, length and bushings) and wheel seizes. Thanks for the inspiration.
You showed a Linkage analysis of the frame in your starting post. As I am fiddling around different options myself utilizing some parts out of my own garage and to save myself a bit of time I'd like to ask if there a chance to receive a copy of the file?

Thanks already for the great idea and I try to follow with an own built if time and money permits.

Have a nice Sunday
Martin
 
Feb 27, 2020
73
37
home
Question to TosaBikes:
"Maybe you have read the article about CE marking from Is it legal to build your own eMTB? All the most important information and legislation regarding DIY ebikes | E-MOUNTAINBIKE Magazine . I see the AM 1.0 PRO is almost the same as Rob Hancill's build ebike. Poland is EU. Do the ebikes TOSA AM 1.0 (PRO) have a CE mark ? "

Answer from Tosa wrt CE mark:
"We don't have time to read the forums, we make bikes instead. All components that require a CE certificate have such markings.".

I interpret that as a "No".
 
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Feb 27, 2020
73
37
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YT-Industries:
After searching I found in the "Safety first manual", which seems to apply to all of their e-bikes, a statement that comply to EN ISO 4210-2 and EN 15194.
Has the text the same validity as an CE mark ? It doesn't feel like that.

yt_complies.png
 
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Feb 27, 2020
73
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home
Its a very thorough article.
And also:
If you want to be able to ride on public roads legally with it then, as mentioned previously, you have to conform to the Machinery Directive even as a private individual. However, not sticking to the standards (see glossary) generally doesn’t lead to sanctions for private parties, an obvious grey area.
 

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