Tern D7i Gears Skipping on Load
04-05-21, 09:57 PM
#1
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Tern D7i Gears Skipping on Load
Hello,
I got an almost pristine Tern Link D7i from someone recently and all would be great, but when I got to test ride it a bit more, it skips gears when applying load. It has Shimano Nexus internal 7 speed gear hub.
I tried to do alignment with yellow stripes and 4th gear, but even when aligned they keep slipping and skipping when I pedal, making it nearly impossible to ride. I also noticed it is really hard to switch to 7th gear and the higher I switch the harder it becomes.
To add to it all, 2nd gear makes some rattling noises when pedaling and slipping/skipping as well of course.
Do you think something can be done with it or that Nexus hub is a lemon and I need to order a new one? It's barely used and I find it odd such issues appeared.
I tried to take off that wheel as well, checked pedals/chain, put everything back and issue is still there as it is. I want to go to a LBS, but I'm not even sure if they look at internal hub issues.
I got an almost pristine Tern Link D7i from someone recently and all would be great, but when I got to test ride it a bit more, it skips gears when applying load. It has Shimano Nexus internal 7 speed gear hub.
I tried to do alignment with yellow stripes and 4th gear, but even when aligned they keep slipping and skipping when I pedal, making it nearly impossible to ride. I also noticed it is really hard to switch to 7th gear and the higher I switch the harder it becomes.
To add to it all, 2nd gear makes some rattling noises when pedaling and slipping/skipping as well of course.
Do you think something can be done with it or that Nexus hub is a lemon and I need to order a new one? It's barely used and I find it odd such issues appeared.
I tried to take off that wheel as well, checked pedals/chain, put everything back and issue is still there as it is. I want to go to a LBS, but I'm not even sure if they look at internal hub issues.
Last edited by stmalk; 04-05-21 at 10:01 PM.
04-06-21, 02:06 AM
#2
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You're supposed to ease off the pedals when changing gears, or even stop pedalling.
Since it's barely used, there's no reason to suspect the cable + housing needs changing.
When adjusting the yellow stripes, go → 3 → 4 → 5 → 4 and check that they still line up.
You migh also take the wheel off the bike, and make sure the left hand-side cone isn't too tight, preventing the bearing balls from doing their job correctly: The wheel should spin with no/very little lateral play.
Since it's barely used, there's no reason to suspect the cable + housing needs changing.
When adjusting the yellow stripes, go → 3 → 4 → 5 → 4 and check that they still line up.
You migh also take the wheel off the bike, and make sure the left hand-side cone isn't too tight, preventing the bearing balls from doing their job correctly: The wheel should spin with no/very little lateral play.
Last edited by Winfried; 04-07-21 at 04:12 AM.
04-06-21, 07:46 AM
#3
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Thread Starter
Yep, tried adjusting yellow stripes like that, no result. Took wheel off and on as well, still the same. Just to clarify - it does slip when I pedal, not when I shift gears.
It feels like cogs in hub just don't hold the load or something.
It feels like cogs in hub just don't hold the load or something.
04-06-21, 05:41 PM
#4
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Sounds stripped,....the owner probably shifted under load.
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04-10-21, 08:14 PM
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The Nexus-7 is easy to open up and inspect. For some reason I'm having trouble finding a video, but the internals come out as a unit from the drive-side by removing the locknut and cone from the *non-drive* side. If you find metal bits, the hub needs serious help. You could send the hub HERE.
