LTWOO ER9 & ERX - Electronic groepsets

[SillyMochi]

So I picked up an er9 in the current sale. Wanna give it a try for an upcoming gravel build. I know, I know, given the reports of water-related damages to the RD and batteries, that's probably not the best idea - but I guess we all like to make life a bit hard sometimes 

If I remember correctly, I saw people talking about "weather proofing" their groupsets to keep potential wet ride damages to a minimum. Trying to seal up all contact points as good as they could. Can anybody who actually did this on their groupset comment on what exactly they did?

Cheers!

[jonathanf2]

So I picked up an er9 in the current sale. Wanna give it a try for an upcoming gravel build. I know, I know, given the reports of water-related damages to the RD and batteries, that's probably not the best idea - but I guess we all like to make life a bit hard sometimes 

If I remember correctly, I saw people talking about "weather proofing" their groupsets to keep potential wet ride damages to a minimum. Trying to seal up all contact points as good as they could. Can anybody who actually did this on their groupset comment on what exactly they did?

Cheers!

You can do either the heat shrink tube method or the liquid tape/rubber cement + dielectric grease to protect the battery cable contact points.

Even though I have 2 ER9 road bikes, I've been hesitant to go EGR on my gravel bike because I hose it down after every ride due to the dusty terrain in my area. There's no avoiding washing my bike.

[SillyMochi]

Thanks for the quick reply. Where exactly did you apply the grease? The heat shrink probably around the cable connections? If you happen to have a picture, I'd appreciate it!

[amacal1]

Thanks for the quick reply. Where exactly did you apply the grease? The heat shrink probably around the cable connections? If you happen to have a picture, I'd appreciate it!

The dielectric grease goes directly on the contacts and pins inside the plug.

I have an eGR and I elected not to use the rubber cement or any other glues or sealants. I just used dielectric grease on the ports.

But... eGR hasn't had water ingress issues that I'm aware of. Really, all the grease is doing, I think, is helping waterproof the electrical connections, not prevent water from getting INSIDE of the derailleur. The other methods are, I think, ways to try to keep water from getting inside of the derailleur. If it functions correctly, that should never be an issue.