..................
In case you wonder, could not get the cable through the chain stay since the connector is too long and stiff. Tried from both sides and finally gave up.
The routing tool with 5mm diameter passes in both directions but the stiff cable connector with the same diameter gets stuck and will not move..... I guess you can't always win 

BR Chris

Hi @ChrisB,

many thanks for the idea with the heat shrink tube. Might work!

About the cable connector and about its stiffness and how long it is. Where did it got stuck? Near the RD in my frame I have this black piece where the RD-cable has to fit through. 2.8mm diameter on one and 6mm on the other side. I could possibly widen the 2.8mm hole to e.g. 5mm. How much is the diameter of the cable on the thickest part?

Kind regards, Dennis

Could you share photos of the relevant area of the RD and a link with the things you've applied?

Interesting (and unfortunate) news on the water resistance. Do we have any idea where the ingress is? I was planning on using dielectric grease in the ports to help ensure that isn't the ingress. But I wouldn't want to have to rip apart a new one to coat it with that or conformal coating.

Anyone has an idea about how to solve the potential water ingrease ourselfes?

Disassembeling the RD seems to be not that difficult:
- see from minute 8.

Hi @FabioZang,

many thanks for your feedback! Question is, when did they have updated the version in order to be more waterproof - if they did at all?

If they did, how to ensure to get delivered the updated version and not the previous one. I have reached out to Ltwoo via Emai, but didn't get a response. Via Aliexpress I didn't find a "chat/message button" to get in contact with the "official Ltwoo store" in order to ask them those questions.

You might have more luck when writing to them via email in your language? Could you give it a try?

Are there similar forum chats in China about this topic?

Many thanks, Dennis

Thanks a lot for reporting your experiences!

I think I did a thinking mistake. The braking hose on the shifter side most probably won't be compatible btw GRX und eGR. So yes, not really a saving of effort then since I will have to use the cable delivered with eGR shifters and pull them trough the frame.

Ahhh, nice! Didn't know that! I thought there would be a one piece battery pack included.