LTWOO eGR

[jonathanf2]

Hi,

will this groupset fit for my TanTan GR040 (http://www.tantancycling.com/index.php?_m=mod_product&_a=view&p_id=841) with flat mount holes?

Many thanks, Dennis

It should fit fine. Worst case scenario is that you'll have a very close fit trying to tighten the screws on the rear brake adapter + caliper. Also don't over tighten the screws on the adapter plates, I've already stripped the thread on two of them. I bought extra adapter plates from 80 Design store as backup. It's the only downside to the eGR brake caliper design, despite being very good brakes (probably the best I've tried).

[trcycling]

Sooooo, is anybody else having problems charging your system? 

Everytime I have to charge my eGR, it is a hassle. Twice I've had it started only to come back later and find that it didn't charge. Not only that but trying to get a connection is maddening. It just doesn't want to.

So what have I tried:

• I have two cables and both have the same challenges. I know to check the USB A side and make sure to have a green light before trying. (I do forget between times that when it is charging, that changes to red)
• I make a point to clean the contact on the RD. (Please tell me why an exposed contact is facing up?) I also clean the cable end. I've used fingers, towel, a soft brush etc.
• Repeated attempts to make contact. The magnet snaps but over and over no light. Or a brief light then nothing

Any tips? Am I doing something wrong? Is this a defect I should be trying to warranty?

[jonathanf2]

Sooooo, is anybody else having problems charging your system? 

Everytime I have to charge my eGR, it is a hassle. Twice I've had it started only to come back later and find that it didn't charge. Not only that but trying to get a connection is maddening. It just doesn't want to.

So what have I tried:

• I have two cables and both have the same challenges. I know to check the USB A side and make sure to have a green light before trying. (I do forget between times that when it is charging, that changes to red)
• I make a point to clean the contact on the RD. (Please tell me why an exposed contact is facing up?) I also clean the cable end. I've used fingers, towel, a soft brush etc.
• Repeated attempts to make contact. The magnet snaps but over and over no light. Or a brief light then nothing

Any tips? Am I doing something wrong? Is this a defect I should be trying to warranty?

Clean your battery cable and RD magnetic port. I periodically wipe both down with a cotton swab and alcohol. After camping trips, my RD is very dirty so I find the alcohol does the trick cleaning debris on the magnetic port.

This should hopefully fix your issue! 

[trcycling]

Clean your battery cable and RD magnetic port. I periodically wipe both down with a cotton swab and alcohol. After camping trips, my RD is very dirty so I find the alcohol does the trick cleaning debris on the magnetic port.

This should hopefully fix your issue! 

Unfortunately, I have done both several times, on both cables I have. Still unstable. If I keep trying it over and over it will eventually connect

[gloscherrybomb]

Sooooo, is anybody else having problems charging your system? 

Everytime I have to charge my eGR, it is a hassle. Twice I've had it started only to come back later and find that it didn't charge. Not only that but trying to get a connection is maddening. It just doesn't want to.

So what have I tried:

• I have two cables and both have the same challenges. I know to check the USB A side and make sure to have a green light before trying. (I do forget between times that when it is charging, that changes to red)
• I make a point to clean the contact on the RD. (Please tell me why an exposed contact is facing up?) I also clean the cable end. I've used fingers, towel, a soft brush etc.
• Repeated attempts to make contact. The magnet snaps but over and over no light. Or a brief light then nothing

Any tips? Am I doing something wrong? Is this a defect I should be trying to warranty?

I had this problem and it turned out that it needed a powerful wall unit (like you have for a smartphone) and it wouldn't charge properly off a weaker unit or a laptop usb port, for example.

[jonathanf2]

I just apply a bit of pressure on the battery connector and wait for the light to start flashing. Clean my connectors on a regular basis with an alcohol damp swab. All three of my LTwoo groupsets have been holding up.

[gloscherrybomb]

Some great discounts available on aliexpress right now, especially if you use all of the available vouchers and cashback.

[trcycling]

New Version of LTWOO eGR Derailleur?


So, I wrote to my reseller (80 Designer Store on Aliexpress) about the charge problem. They promptly replied offering a warranty replacement for a nominal shipping charge ($15). Deal. But they 'warned' me that they only had the new, 10-50t version. Uhhhh, excuse me? Sure, send it. Awesome response

It arrived today (about a week). It is indeed a different version. The cage now measures 90mm bolt to bolt where the original one was only 83mm. That seems to suggest that it could support 50t now. But I cannot fine ANY reference to such a thing anywhere in the English web. The LTWOO mechanical RD can do it but the product page still says 46t for eGR.  I cannot observe any other differences to the earlier version (delivered in May 2024). It does weigh 15g more and 7mm of cage doesn't account for that. The app does not differentiate their versions either.

Has anyone else heard of an update. I've been looking at reports from Taipei bike show but nobody has mentioned it that I've seen yet.

[raisinberry777]

Lucky find! I think that's news to everyone. Any other obvious visual differences or just a longer cage?

[trcycling]

I can't see anything and I've looked at them side by side.

What I have noticed is that it works with my 10-50 WAY better. (Yes, I know I was running it out of spec). I haven't had it on the road yet but what I've noticed is:

• Almost no B screw tension to put it in position on a 50t. With V1, it needed nearly full extension
• On the stand, shifting at the bigger cogs seems crisper
• The initial calibration point is WAY off. But it was on the V1 as well. The position for gear 1 lines up about the 5th cog.  Easy enough to fix with the initial calibration but it makes one think it's messed up at first. Once calibrated, no micro adjustment needed on a Garbuaruk 11s

We'll see on the road tomorrow I hope.

[jonathanf2]

I wonder if it's possible to swap out the cage on the V1 using the longer V2 cage? Has anyone tried it?

Also I saw one of the AliEx sellers having listed the eGR has having 50t max cog. So I'm wondering if this update has silently been implemented without anyone noticing?

[amacal1]

I wonder if it's possible to swap out the cage on the V1 using the longer V2 cage? Has anyone tried it?

Also I saw one of the AliEx sellers having listed the eGR has having 50t max cog. So I'm wondering if this update has silently been implemented without anyone noticing?

I don't know, but about 2 months ago I ordered a replacement cage from 80's Designer Store and I haven't actually put it on yet. I'm going to go check it tonight to see if it's an exact replacement for the original or if there are any differences. I suspect the differences run much deeper than just a longer cage, though, since I don't even think the cage was fully removable and the parts I received were only one side of it (one of the reasons I didn't put it on yet).

Edit: I just pulled it out to compare, and the replacement cage I ordered is an exact copy of the original. Also, again, confirmed that it's really just one side of the cage so it's of limited use if I actually completely bork the cage in another crash.

[gloscherrybomb]

I bought an additional wheeltop groupset just because I needed the 50T capacity  ah well.

[jonathanf2]

I bought an additional wheeltop groupset just because I needed the 50T capacity  ah well.

I was super tempted to get one of those discounted Wheeltop GeX groupsets on AliEx just for the 50t. Though if LTwoo is going full wireless with the MTB eTX, I might just go with that since I do like LTwoo's app fine-tuning.

[jonathanf2]

This listing has total capacity listed as 50t. So I'm guessing they just secretly put a longer RD cage without telling anyone!

https://www.aliexpress.us/item/3256806450112754.html