LTWOO ER9 & ERX - Electronic groepsets

[SirBikealot]

i'm running 50-34 and 11-42 on my GRX 400 and a clutch in on makes a hugh differnce in chaining up gears from the middle of the cassette. But as the RD moves a lot further away to compensate for the 42 dinner plate in the back, at least for me the switched on clutch is no longer needed on gravel stuff.

so if the EGR has a clutch switch, the off position should work fine.

[SillyMochi]

My understanding of the EGR dampening system is, that it is "always on" and there is no off-switch - neither physically nor digital.

[amacal1]

My understanding of the EGR dampening system is, that it is "always on" and there is no off-switch - neither physically nor digital.

You are correct. Whatever it has, it is not selectable.

I don't think it has a clutch at all. It feels like it just has a very stiff spring. It's possible there is some damping, but it's not discernible just from feeling it with your hand.

[SillyMochi]

Ltwoo states it is a "structure composed of a unidirectional bearing and metal friction plates. It works by utilizing the friction of metal plates to absorb the excess chain jitter" - so probably a glorified spring 
source: https://www.ltwoo.com/Technologies/details?partId=13&specialId=13

I couldn't find much else on the web. Their manual doesn't even include the word "dampening", yet alone an explanation what it does or how it works.

[amacal1]

Ltwoo states it is a "structure composed of a unidirectional bearing and metal friction plates. It works by utilizing the friction of metal plates to absorb the excess chain jitter" - so probably a glorified spring 

Yeah, the spring tension is higher than a road derailleur, but if that statement is true then maybe there's some amount of damping too.

[Sebastian]

Quick update on my battery draining issues: So I received my replacement RD from 80 Designer Store. Again, kudos to them for respecting their warranty. I only paid around 10 EUR for shipping.

I installed the new RD, paired everything and the issue is gone. The new RD received a firmware update right away, so it's running on a different (newer) version than the old one. Anyway I've had it on the bike for a whole day now and the battery level has not changed. It remained at 77% throughout whereas with the old RD, it would drop at least 15% within the first 12-24h and then much quicker after that. The batteries are the same.