LTWOO ER9 & ERX - Electronic groepsets

[Unknownftp]

No. I tried pairing it as a bluetooth sensor and via Ki2 extension and it didn't work

Works with my magene, telling me the gearing but no battery level info.

[Unknownftp]

There is indeed a phillips screw screw there, I haven't noticed it. It looks like it has a shimano-style cage mounting system with a pin holding it in place. I only had an experience with replacing sram cages that have a bolt on the inside of the outer plate that holds the cage in place so I was confused when I took ltwoo apart and saw a rivet in there.

Do you have a picture of the disassembled cage?  I wonder if it's compatible with shimano since I'm eyeing some shimano compatible OSPW and it does not look like anyone tried it yet

Here are the photos I took a while back. Haven't had a chance to tear it down again. The longer spring is the ltwoo. Cage is ltwoo

[Rapac]

Is the ERX compatible with Karoo? Does it shows which gear you are at and how many changes you made?

Karoo 3 user, it works, no need for ki2 app (wich is for Shimano only I think)

[user757]

Anyone know if the ER9 allows you to trim individual gears while riding? Say by holding the button on the inside of the shifter while clicking shift up/down?

Can't seem to find any mention of this but it would seem to be a no-brainer feature cause that's when you need the trim the most.

[jonathanf2]

Anyone know if the ER9 allows you to trim individual gears while riding? Say by holding the button on the inside of the shifter while clicking shift up/down?

Can't seem to find any mention of this but it would seem to be a no-brainer feature cause that's when you need the trim the most.

The ER9 trim function seems to engage in either the low or high gearing. I just intuitively double click it in either gear setting. I don't think the trim can be adjusted for individual gears though. If you're getting rubbing with the middle cassette cogs, I'd check your FD tuning first.

[pavlo.k]

The ER9 trim function seems to engage in either the low or high gearing. I just intuitively double click it in either gear setting. I don't think the trim can be adjusted for individual gears though. If you're getting rubbing with the middle cassette cogs, I'd check your FD tuning first.

I've been riding er9 for 6 months now and I still don't understand how trim works and what "micro adjusting individual gears" means for the fd in the app. It seems like you can trim every time your shift in the rear. The derailleur does something. I can hear it move but what the position is and how to set it up I have no idea. Also one you trim, you can't untrim until you shift which is annoying because someti.es trim actually makes rubbing worse

[TCR Boy]

I have just ordered ER9 from L-twoo factory shop on Ali express.

Seems there is a factory shop and an official shop?

[toxin]

there is no official shop, just independent resellers posing as such

[1jzsupra]

For V1 and V2 owners, do you have a cap or anything for the charging port?  I  would like for my derailleur to not die again lol.

[SillyMochi]

I put expensive batteries in mine and i very rarely charge it, the battery lasts for a very long time. The charging port is a major flaw though, and a source of stress. I have an ERX derailleur because my ER9 died, and after not that many miles on it, the charging port is already causing problems. For the cable to charge, you can't just clean the port and connect. Sometimes it works, sometimes it doesn't, it's shit. 100% a design flaw, which they addressed in the newer versions with usb charging. I do have back up option, as a geek: i have a lithium charger (opus something), so worst case, and it's happened several times already, i remove the batteries from the seat post and charge them on the opus. it's a faff, but they hold their charge a very long time, so it's not the end of the world. It does suck though.
If anyone figured out the magical sequence to get it to charge properly, please do say.

Okay, I got similar batteries. Thought you went with something super fancy for 20€+ or whatnot
I also think the charging is the culprit with mine. Either it's the port or the charging protocol. Might need to get a Li-Ion charger.

[CopenF]

ER9 user here. The 2mm hex screw in my front R shifter keeps getting loose after a couple of hours of riding. I set it up perfectly before i leave and while out on longer rides i have to push the brake lever further and further in to get the same braking power… Anyone else had this problem, if so do you have a fix or any idea what to do? I have bled the brake multiple times and i can always tighten the screw to get it to work perfectly again. But it would be nice not to have to do it… My left shifter works perfectly.

[Alastair_S1D]

Anyone having issues with their brakes getting air in them or something?

I have had to bleed my rear brake twice now in the four months I've had my eRX. Specifically the rear.

I pull the lever till it bottoms out and there is just no brakes. Any ideas why this would happen?

[jonathanf2]

My ER9 brake calipers are solid. Instead of doing a full bleed, for regular maintenance I always do the top-off method by placing a funnel on the hydraulic screw port, fill it with mineral oil and then pump the brakes to remove air bubbles. I repeat the process on the other brake/shift lever.

I run the V1 ER9 calipers, the V2/V3 EGR calipers and a pair of GRX calipers with Ultegra levers on another gravel bike. I do the same method on all bikes. No issues. It's nice to have mineral oil compatibility across all platforms. This is the reason I'll never ride SRAM and their DOT brake fluid nonsense.

[CopenF]

My ER9 brake calipers are solid. Instead of doing a full bleed, for regular maintenance I always do the top-off method by placing a funnel on the hydraulic screw port, fill it with mineral oil and then pump the brakes to remove air bubbles. I repeat the process on the other brake/shift lever.

I run the V1 ER9 calipers, the V2/V3 EGR calipers and a pair of GRX calipers with Ultegra levers on another gravel bike. I do the same method on all bikes. No issues. It's nice to have mineral oil compatibility across all platforms. This is the reason I'll never ride SRAM and their DOT brake fluid nonsense.

Do you attach the funnel on the break calliper port or the shifter itself?

[jonathanf2]

Do you attach the funnel on the break calliper port or the shifter itself?

There's only one mineral oil port on the ER9/X shifters. I attach the funnel to that port, add a bit of mineral oil and pump the levers until I get the air bubbles out. It's an easy way to top off the brake fluid without having to do the full bleed.