Author Topic: LTWOO ER9 & ERX - Electronic groepsets  (Read 1452995 times)

pandinoyoung

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1650 on: September 02, 2025, 03:49:21 AM »
Attached photos

https://photos.google.com/share/AF1QipPf_TrIO5piGfgLo8Q9EdPrCayIbCGOsK6pOPBISnu_XBQH4dmZhFVKc4YCCfAk3A?key=UGtMSk9PSEk5Mm5YN2F1cTAtUC15eWljWE5PSjBR



the rear derailleur was not modified, so I had to change the cage myself
It's interesting that it arrived (pandapodium) with the batteries inserted, already synced with the controls, and the latest firmware version.
« Last Edit: September 02, 2025, 02:09:00 PM by pandinoyoung »

Rajmundx

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1651 on: September 09, 2025, 01:24:26 AM »
I have a question but I can't check it right now. Does the LTWOO groupset come pre-filled with brake fluid/oil, or do I need to buy and fill the oil myself?

amacal1

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1652 on: September 09, 2025, 08:37:32 AM »
I have a question but I can't check it right now. Does the LTWOO groupset come pre-filled with brake fluid/oil, or do I need to buy and fill the oil myself?

My eGR came with a bottle of oil, as I recall.

rockerplates.de

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1653 on: September 09, 2025, 11:26:37 AM »
I have a question but I can't check it right now. Does the LTWOO groupset come pre-filled with brake fluid/oil, or do I need to buy and fill the oil myself?
i never received shipments with prefilled parts... as shipping with oil is tricky and expensive to europe, they also never included oil in the boxes...

hsaus

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1654 on: September 10, 2025, 07:54:14 AM »
I have a question but I can't check it right now. Does the LTWOO groupset come pre-filled with brake fluid/oil, or do I need to buy and fill the oil myself?

The three I have (2x eR9, 1x R9) all came with pre-filled hoses attached to the calipers, and oil in the shifter reservoirs. But I topped up with regular Shimano mineral oil, as a little bit inevitably leaks during installation.

Rebel_Yell

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1655 on: September 10, 2025, 10:03:37 AM »
The three I have (2x eR9, 1x R9) all came with pre-filled hoses attached to the calipers, and oil in the shifter reservoirs. But I topped up with regular Shimano mineral oil, as a little bit inevitably leaks during installation.

Where did you order from?  Very interesting that they were prefilled.

hsaus

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1656 on: September 10, 2025, 01:33:19 PM »
Where did you order from?

L-Twoo "Official" Store on AliExpress

nick82

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1657 on: September 11, 2025, 12:17:54 PM »
does erx use BH-59 or BH-90? i wanted to buy some spares

mozart

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1658 on: September 12, 2025, 03:09:41 AM »
Attached photos

https://photos.google.com/share/AF1QipPf_TrIO5piGfgLo8Q9EdPrCayIbCGOsK6pOPBISnu_XBQH4dmZhFVKc4YCCfAk3A?key=UGtMSk9PSEk5Mm5YN2F1cTAtUC15eWljWE5PSjBR



the rear derailleur was not modified, so I had to change the cage myself
It's interesting that it arrived (pandapodium) with the batteries inserted, already synced with the controls, and the latest firmware version.
What wheels are these?

hsaus

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1659 on: September 12, 2025, 08:09:53 AM »
does erx use BH-59 or BH-90? i wanted to buy some spares

It ships with BH-59. But you can use either one, you just have to match the barbs to the hoses.

hsaus

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1660 on: September 12, 2025, 08:13:39 AM »
the rear derailleur was not modified, so I had to change the cage myself

I just got the cage, but no instructions on how to swap. Do you just undo the bolt that goes through the upper pulley, or is there more to it? Never swapped a rear derailleur cage before.

adc

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1661 on: September 14, 2025, 11:37:17 PM »
Anyone on erx v3 having battery drain issues. Symptoms go away when the front derailleur is unplugged. Drain is maybe 10-30% per night.

Just doesn't go into sleep mode when FD is plugged in, the RD green LED will blink every 10-20 seconds.

I've tried 2 sets of batteries, also tried swapping which h cable goes to where. Even bought a spare to see if it followed a specific cable, no dice.

mashiro2004

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1662 on: September 15, 2025, 01:34:16 AM »
Hi everyone,
I ordered an ltwoo er7 groupset from 318 bike store. I ordered it from them because they were the only ones who answered questions during the pre-sale, while the other sellers either didn't answer or didn't answer some of them.
They confirmed that the derailleur has a 24-month warranty. I hope that's true, but reading here on the forum, I saw that there were a few issues, some of which were resolved and others not.
The groupset included a battery, and both the cables and levers had pre-filled oil.
I paid €333 for the groupset + €31 for customs and VAT (22% Italian VAT). It arrived after about 3 weeks, but was stuck first in the Netherlands and then at Italian customs for almost 2 weeks.
The seller was always communicative, confirming the shipment and reminding me that I would pay customs duties myself by messaging me via WhatsApp.
I installed and configured the derailleur in about a couple of hours.
The groupset on the app is recognized as ERX and not ER7.
The only thing I don't understand, but I think it's a limitation of the ER7 compared to the ER9 and ERX, is that the front derailleur doesn't have a trim function, only a high and low position.
Has anyone had the same problem or had the chance to try an ER7?
It would also be interesting to know if the rear derailleur is interchangeable with the ER7, as it is with the ER9 and ERX.
Does anyone have both and can test them out?

jonathanf2

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1663 on: September 15, 2025, 09:25:57 AM »
Hi everyone,
I ordered an ltwoo er7 groupset from 318 bike store. I ordered it from them because they were the only ones who answered questions during the pre-sale, while the other sellers either didn't answer or didn't answer some of them.
They confirmed that the derailleur has a 24-month warranty. I hope that's true, but reading here on the forum, I saw that there were a few issues, some of which were resolved and others not.
The groupset included a battery, and both the cables and levers had pre-filled oil.
I paid €333 for the groupset + €31 for customs and VAT (22% Italian VAT). It arrived after about 3 weeks, but was stuck first in the Netherlands and then at Italian customs for almost 2 weeks.
The seller was always communicative, confirming the shipment and reminding me that I would pay customs duties myself by messaging me via WhatsApp.
I installed and configured the derailleur in about a couple of hours.
The groupset on the app is recognized as ERX and not ER7.
The only thing I don't understand, but I think it's a limitation of the ER7 compared to the ER9 and ERX, is that the front derailleur doesn't have a trim function, only a high and low position.
Has anyone had the same problem or had the chance to try an ER7?
It would also be interesting to know if the rear derailleur is interchangeable with the ER7, as it is with the ER9 and ERX.
Does anyone have both and can test them out?

I believe my ER9 is still viewed as an ERX as well on the app. That sucks if the ER7 doesn't have a trim feature. I don't have the latest V3 ER9/X version to check the differences in FD cage design, but the trim is very useful on my V1 ER9. Unlike Wheeltop, I don't think LTwoo is very particular about mixing-n-matching components.

mashiro2004

Re: LTWOO ER9 & ERX - Electronic groepsets
« Reply #1664 on: September 15, 2025, 10:31:27 AM »
I believe my ER9 is still viewed as an ERX as well on the app. That sucks if the ER7 doesn't have a trim feature. I don't have the latest V3 ER9/X version to check the differences in FD cage design, but the trim is very useful on my V1 ER9. Unlike Wheeltop, I don't think LTwoo is very particular about mixing-n-matching components.

I had read that the ERX, EGR, and ER9 were interchangeable.
As for the trim, I don't know if it's actually due to the restriction of the ER7 or if it's still a new unit and there are some bugs or maybe some mistake of mine.

EDIT:
I correct what I said yesterday, the trim position is there and works well also in er7, it was my mistake that I didn't understand how to make it work  :-[ :-[

Do not buy from 318Bike Store. Smelly shenanigans ongoing w my order.

15 Sep. Finally got my group. All good. Ended up paying just under 30 eur in taxes / customs, and Alix had taken off 62 eur, so it's a win (in line with expectations from previous transactions).
Net cost before cash back of the group: 355 EUR, having used a ton of coins & a 60 eur coupon.
Cashback should shave off another 15 eur. 340 eur. Hard to argue with that price :D
And i got the new version of the er9 with the nicer calipers and the usb charging. The shifters are much more clicky, there's much more travel for the buttons to actuate, compared to v1.

I got contacted by someone on whatsapp who had my order data, and sounded like a scammer. Very very odd. I ignored him, and the package finally got processed by local customs and the post office called me. Took just under 1 month since i ordered.

Hi Serge,
I also bought the groupset from 318 Bike Store; I got an ER7.
He also contacted me via WhatsApp. He had my order details and told me his name was Yang.
He only asked me to verify that the order was correct before processing it, and reminded me that I would have to pay customs duties and VAT once the package arrived.
To be safe and out of fear of an AliX data breach (I'm an IT professional and see things like this every day), I contacted support, who told me the phone number belonged to 318 Bike Store.
Personally, I've had a good experience with 3118 Bike Store; they've always answered all my pre- and post-sale questions. I hope they have the same attitude in case of problems.
« Last Edit: September 16, 2025, 05:51:17 AM by mashiro2004 »