Hi everyone,
​I just swapped my 48t chainring for a 52t. I’m following the Shimano big-big sizing method. With the chain wrapped around the largest cog and largest chainring (bypassing the derailleur), I only have 1 link of overlap left. This is actually still in the ​Shimano’s recommends (1-3 link overlap + a quick link)
​Based on the photo (this is my usual gear), does the chain look too short?
​Should I add 1 or 2 more links to meet average of the recommendations?
​Can I "re-add" links by taking a leftover piece from my old chain and using a second quick link, or is that a bad idea? They're still new. I just ride-test and realized the 48th not shifting well.
​Thanks for the help!
by anhtaiqb
3 Comments
All the front and rear derailleurs shifted well in my 20km ride test. I’m just not sure if it’s too short for long rides in the future.
post a pic of the chain in the large cog and large chainring….
then we can let you know
The pic you have posted isn’t really relevant ( sitting in an intermediate gear at the rear). So saying, it looks too short if I estimate it’s on the larger cogs the group will allow. Even with di2 locking out the bigger gears you will still be occurrences where you are in bigger gears.
I haven’t heard the Shimano advice is 1-3 links only 2. Happy to be corrected.
I don’t think there is anything wrong with adding a second quick link other than you are adding another point of failure. Given the costs of chains I would probably be trying it.
Given the you are using the big – big method and you are moving to a bigger chainring it’s hardly surprising your chain is marginal. While where on it make sure you review the position of the FD, it’s likely it will need to move up slightly. Potentially you could damage the derailleur or chain on a high torque upshift.