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• #2
What exactly are you replacing? If you’re only changing the chainset you won’t need to replace the front derailleur (assuming chainrings of both chainsets are of a similar size)
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• #3
Thanks, I only want to replace the chainset.
I thought I didn't need to change the front derailleur, but the thread below suggests a 1mm difference.https://forum.bikeradar.com/discussion/13104138/105-5800-and-r7000-crankset-compatibility
I guess will probably first change the chianset and see if they rub - shimano compatability seemingly cautious.
I guess the question stems from there being no compatability chart that lists compatability between the front deraeuller and rear deraulliers.
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• #4
1mm difference is nothing, adjust the derailleur limits and tension if necessary.
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• #5
I am currently running a 23 year old Campag triple front mech and a 8 year old shimano mountain bike rear mech, both controlled by Dura Ace bar end shifters on a road bike. Not sure if that answers your question but it works and it’s not on any compatibility chart.
Hello,
I guess this is a really basic question but I couldn't find a general ask thread;
Question
are components of the rear and front drivetain independent as long as the shifters are compatabile with both front and rear-deraillers.
Background
I have 105-5800 groupset and I am updating the chainset to a shorter 165mm. As I can't find any 5800 in stock I am going to get R7000, I believe this requires updating the front mech as the 5800 FD and R7000 FD are incompatable based on the shimano compatabilty charts.
Looking at these charts the front drivetrain and rear drive train charts are indepdendent hence my question. I guess I don't see a reason why they would need to be but thought I would check.
If there is a better place to post this mods please delete (and sorry!!)