LTWOO ER9 & ERX - Electronic groepsets

[Markus_HiHo]

I put clear decal tape on all my RDs and then use a heat gun to properly seal everything. I also rubber cement all the ports for additional sealing.

Do you have any photos? Do you have disassembled the RD?

[Chiyou]

Still wondering about the shifting buttons - anyone know if you can switch around what they do?

The button assignment can't be swapped, undoubtedly to the dismay of many people. If I recall correctly, this used to be possible at one point but then L-Twoo removed that option (possibly due to our broken patent system).

[Gloopann]

The button assignment can't be swapped, undoubtedly to the dismay of many people. If I recall correctly, this used to be possible at one point but then L-Twoo removed that option (possibly due to our broken patent system).

That's quite unfortunate, I seemed to recall there being a way when I was reading up on the groupset, but couldn't find it in the app. At least now I know I am not crazy.

[Bonka]

Do you have any photos? Do you have disassembled the RD?

I took apart the RD, posted photos and all the information a few pages ago.

[Markus_HiHo]

I took apart the RD, posted photos and all the information a few pages ago.

How did you open the case of the electronic? I don't want to destroy it.
I want to protect the electronic with this.
 https://www.wet-protect.de/e-basic-feuchtigkeitsschutz-spray-dose-200ml/
You can spray it directly on the electronic and protect it from water.

[Bonka]

How did you open the case of the electronic? I don't want to destroy it.
I want to protect the electronic with this.
 https://www.wet-protect.de/e-basic-feuchtigkeitsschutz-spray-dose-200ml/
You can spray it directly on the electronic and protect it from water.

You need to completely free the plastic case from any metal components around it, then unscrew all the screws and the case opens. I applied a special PCB varnish to protect the components and the board from water.

[Markus_HiHo]

You need to completely free the plastic case from any metal components around it, then unscrew all the screws and the case opens. I applied a special PCB varnish to protect the components and the board from water.

Maybe I will try a varnish, too.
I did this already, no metal and screw on it.
Did you use a tool to open it?

[Bonka]

Maybe I will try a varnish, too.
I did this already, no metal and screw on it.
Did you use a tool to open it?

It needs to be freed from everything, and it will open easily, at least my B2 was simply snapped with an elastic band, look at my photo about 15 pages ago.

[Bonka]

I'm not a big fan of OSPWs, but this 18t offset pulley wheel actually works. It allows bigger cassette sizes while maintaining solid RD shifting:

https://www.aliexpress.us/item/3256810576987349.html

On my eR9 groupset, I'm running a 2x 50-34t chainring + 10-36t XDR 12 speed with this setup and no additional modifications were needed except for swapping out the lower jockey wheel. Prices fluctuate, so I'd shop around or wait for a sale.

Have you used it? I just got my wheel and it doesn't work, the chain comes off on 1st and 12th gears....Shifter ltwoo erx

[jonathanf2]

Have you used it? I just got my wheel and it doesn't work, the chain comes off on 1st and 12th gears....Shifter ltwoo erx

Yes. The pulley wheel needs to be set at the right distance on the cage. I'd go small/big or big/big and adjust the pulley wheel until it doesn't derail when spinning the crankset. Once set properly it should spin smoothly.

[Bonka]

Yes. The pulley wheel needs to be set at the right distance on the cage. I'd go small/big or big/big and adjust the pulley wheel until it doesn't derail when spinning the crankset. Once set properly it should spin smoothly.

I've already tried different pulley positions, but nothing changes. I think it's a mistake that it's not narrow-wide; then it would work correctly. But I still don't understand how everyone installs it and gets it to work correctly.
My transmission worked perfectly throughout the entire range before.

[Markus_HiHo]

It needs to be freed from everything, and it will open easily, at least my B2 was simply snapped with an elastic band, look at my photo about 15 pages ago.

I checked your photos a lot, thanks for it.
Did you cut of something at the marked area?

Sorry for being so annoying about this topic, I don't want to ruin it.

[Bonka]

I checked your photos a lot, thanks for it.
Did you cut of something at the marked area?

Sorry for being so annoying about this topic, I don't want to ruin it.

Send your photo from the other side, what you photographed is not what is shown in the first photo, just turn it over and send the photo.

[Markus_HiHo]

Send your photo from the other side, what you photographed is not what is shown in the first photo, just turn it over and send the photo.

[Bonka]

It is completely free, now open it.