Sory for post my problem again but this is new er9 from Aliexpress, ltwoo and store from few days are off ;/ Total silence od ther side ;/

problem with er9 one of you have simillar problem (i have PM him).
straight road without any holes, and system go down. This happend with some combination of front from 1 to second and on rear and back. After plug charger system turn on (new battery). happend when i tried to shift both derailleurs at the same time??
Front from big to small and back vice versa.
Yesterday i have test it without gear protection in app (off) and while on FD move from 1 to 2 then all OFF. When gear protection is on i can change at FD gears few times and when chanigng in not smooth system of, this looks like some of protection?? In my opinion FD is quite good adjust at 2x11

53-36T and 11-25T

Thanks for any help

Thats me and nope no solution yet. Just for saftey reasons that i by mistake shift both exactly at the same time i put my charging cable and a usb-a to ubs-c adapter in my saddlebag, so i can connect the rd to my phone as a charging device and get it working again.
Maybe some pseudo "calibration" needs to be done, because mine thought it was in the smales cog altough it was in the middle of the cassette

Just came back from my first ride.
Was super happy with the ER9. Nice shifting (some small adjustments have to be done to be spot on) until i tried to shift both derailleurs at the same time.
Front from big to small and back vice versa. Ended up in a half shifted gear and a complete dead groupset.
Has anyone had this problem before? And is there a hack to bring it back to life without attaching the charging cable?

Hello folks,

I do have a doubt about my er9 groupset...

It works perfectly when connected to the charging cable (via the app and sync with the levers), but as soon as I plug it out, nothing happens... No green light on the rear derailleur...

I guess it's not normal but hum...?!

had quite the same problem yesterday. Try holding the RD button when attached to the charging calbe. The RD jumped into the smallest cog and worked fine since. This should be some kind of factory reset, if i understood right.

I got the same axles as Serge with my TT-X34 yesterday. They are about 3g heavier.

maybe they are some sort of this one here.
https://aliexpress.com/item/1005004603056853.html
At least they should be quite the same weight.

How's everyone's experience with battery life so far? I bought 2x 800mAh batteries. I didn't really pay attention how far I got with the first charge. When I charged the groupset for the second time, I reset the shift counter in the companion app to zero. I have done roughly 4.800 shifts now and the batteries are at 35%. So I should get around 7000-7500 shifts out of a single charge. The bike has done 2.300km with this groupset now. I guess I could do at least another 200km. Some of this was on the indoor trainer, however. Though I do not use ERG mode there, so I shift quite a bit on the indoor trainer as well. All in all, I guess I can expect 1000km per charge without pushing the batteries too much into the red. But if there are batteries with more capacity, this could be increased maybe?

will have a look at it when my set arrives and is installed. I opted for 1100mAh batteries with usb charging. So 1500km is my goal for the first charge?!

WheelTop EDS TX alloy version appears to be available on AliExpress at a lower price point:

https://www.aliexpress.us/item/3256806495696389.html

Very nice, but just 30$ less is imho not really a lower price point, when you take in consideration that the LTWOO alloy to carbon gap is at around 130$

finally pulled the trigger yesterday. 330€ without maybe customs was too temting. Has anyone replaced the breakpads by now and can say, if there is a shimano alternertive? and if yes which model does fit?