Sram eTap rear derailleur sporadically stops shifting - then performs all queued shifts at once?

Discuss light weight issues concerning road bikes & parts.
bikeboy1tr
Posts: 167
Joined: Thu Mar 21, 2013 3:19 am
Location: Southern Ontario Canada

by bikeboy1tr

I still use a light lube (Silicone spray) on the fd and rd just as I would on the mech components. The only difference is I have to pull the batteries and wipe the contacts off or it will give a red light for low battery. I would assume people are lubing and cleaning the elec just as they would the mech.
"Life is like riding a bicycle. To keep your balance you must keep moving"-Albert Einstein
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by Weenie


sanguizola
Posts: 3
Joined: Thu Mar 15, 2018 10:57 pm

by sanguizola

I had the same issue 5 months ago, sent the derraleur back to Starbike and they forwardet it to the factory, when I got it back two months later, I recieved a SRAM Red derraleur, so I had to send it back, after 3 months i finally got the right rd. Two weeks ago the same problem started to show on the new derraleur and i started the process all over again!. A local certified SRAM mechanic told me that they have being notified about the problem. What makes me mad is that they dont recall the bad ones as they should. Take into account that this is a 500-600 dollar part. So this time im buying one while the factory inspects the one that broke and my retailer is refunding the purchase if everything goes ok with the factory. Good service from the retailer, terrible service from the factory!

azmio
Posts: 18
Joined: Tue Oct 18, 2016 2:11 pm

by azmio

I am currently in Malaysia and few of us have the same shifting problem within the first week of purchase. I thought that the Sram Red products have the highest level of quality and workmanship but I was wrong. I regret spending a lot of money on this.

Digger90
Posts: 93
Joined: Sun Jun 21, 2015 9:34 pm

by Digger90

I had this issue - mine being a WiFli rear derailleur. It was replaced with a new one by SRAM under warranty.

What worries me is what will happen if this occurs in future after the warranty has expired... as eTap rear derailleurs are horrrifically expensive.

pulmark
Posts: 3
Joined: Tue Sep 13, 2011 9:54 am
Location: Finland

by pulmark

I recorded a short video clip of the problem:

https://www.youtube.com/watch?v=5C91YOXn2fI

In the video there is no cassette/wheel so nothing external that should prevent RD from moving. I'm getting replacement part from Germany soon. The retailer just informed that the part number for replacement is 00.7518.085.001, the failed one had 00.7518.085.000. The warranty evaluation at SRAM Service took quite long, the part was sent from retailer to SRAM 16, November and they received it back yesterday 5, December, so around 3 weeks.

In my case, I didn't notice that shifting got gradually worse after I first noticed it. It was more like random, there was even some rides that it didn't fail at all and then there were rides where it failed at least once/5mins. Usually the 1st ride after cleaning the bike was the most worst. I cleaned the RD gently using water, brush, mild detergent. Sometimes I took battery off and put the red cover on and sometimes keep the battery in place but I didn't notice any difference. I first noticed failure mid-July and then stopped riding mid-October.

I'm also worried how the replacement works, the warranty evaluation takes time. I don't wanna buy expensive, "extra" spare RD just for the reason that I can switch to use it in case of failure and during warranty evaluation period and even that one can fail.

Collecting info from this thread, the failed RD based on package box label: WK 7, 16, 25 / 2017, WK 6 / 2018.

It would be nice to have some reference of "good" RD week ?/year numbers. Maybe possible to identify if you have bad one or good one if there is some connection into manufacturing time in that numbering and if failure is related to manufacturing process.

Digger90
Posts: 93
Joined: Sun Jun 21, 2015 9:34 pm

by Digger90

I took a photo of the serial number on my rear derailleur cage before it was returned, but not the part number or week of manufacture...

The serial no was: 1533771584

Dunno if that helps anyone...

(To be clear, the above serial no was on the faulty derailleur, not the replacement).

azmio
Posts: 18
Joined: Tue Oct 18, 2016 2:11 pm

by azmio

Hey guys, I am just wondering on how soon SRAM gets it replaced? I checked with the LBS that I bought my set from, they told me that SRAM has not responded to the video that they sent to get it replaced under warranty.

pulmark
Posts: 3
Joined: Tue Sep 13, 2011 9:54 am
Location: Finland

by pulmark

For me it took around seven weeks to get new RD. I had to send the RD first to dealer in Germany and then get it back there. So the processing time at SRAM was around 5 weeks. In the FB there is a SRAM road group, I send msg there and complained about long processing time. They responded that if the failure is clear, it should not last longer than one week.

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