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Re: LTWOO ER9 & ERX - Electronic groepsets
Is crash protection on the app on or off?
February 18, 2024, 08:31:21 PM |
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Re: LTWOO ER9 & ERX - Electronic groepsets
My eRX Rear Derailleur stops working during ride. Anybody have a fix? Do you have the version of the battery that holds batteries with tabs or springs? It's been established that the tabs version led to problems, vs i'm unaware of problems with the springs version. I would start there, because if you have the tabs version, contact LTWOO and get a springs version. The battery housing weighs nothing so shipping it to you should be super cheap for them. And in the meantime, you can add shims to increase the pressure / tension on the system. It is unlikely that any of your group is broken, stuff typically doesnt randomly breaks just like that, especially when it's new and you weren't doing anything weird with it. February 19, 2024, 03:52:32 AM |
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Re: LTWOO ER9 & ERX - Electronic groepsets
I've installed 5 ER9 groups in the last 2 weeks. 1 gave me issues for some reason, but it was my fault. Make sure the limit screws are set properly, as well as the 3rd screw that sets the tension on the cage. The RD protects itself very quickly, so if any of the 3 screws are off, the cage wont shift. It's given me a new appreciation for my own incompetence and the fact that stuff usually works as long as it's installed and setup properly. During the builds i'm often thinking "this is such POS" but then an hour later, or a week later, i realize it's just me being incompetent / thick / tired. Did you unplug and reset? battery's charged? If you remove the wheel, does the RD shift? Are both FD & RD running the latest firmwares? EDIT: setting the 3 screws and calibrating the gears (as well as the FD) is somewhat of an iterative process. If you change a limit screw, your calibration of the RD is likely to need updating. I wont pretend that I understand how everything affects everything, but the point is the moment you change the tension on 1 screw, there's a decent chance the rest of the system is affected. And if ONE thing is off, everything can be off, and the RD tends to protect itself and refuse shifting until it's happy with alignments and what not. February 19, 2024, 09:39:54 AM |
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Re: LTWOO ER9 & ERX - Electronic groepsets
I've installed 5 ER9 groups in the last 2 weeks. 1 gave me issues for some reason, but it was my fault. Make sure the limit screws are set properly, as well as the 3rd screw that sets the tension on the cage. The RD protects itself very quickly, so if any of the 3 screws are off, the cage wont shift. It's given me a new appreciation for my own incompetence and the fact that stuff usually works as long as it's installed and setup properly. During the builds i'm often thinking "this is such POS" but then an hour later, or a week later, i realize it's just me being incompetent / thick / tired. I second that. I've found that as soon as the RD's motor will experience excessive vibration or resistance it will stop shifting and/or shift back to it's original position. For instance, it avoided the big big chainring/casette sprocket combo when I had the RD's upper pulley set up too close to the cassette. It didn't touch. But the vibrations alone caused it to immediately shift back as soon as it went into that gear. A short tweak of the b-screw and the issue stopped. February 19, 2024, 10:04:59 AM |
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