Originally Posted by
Polaris OBark
I've been running that crankset with an otherwise Ultegra drivetrain for years without any unusual wear or excess noise. Did you adjust the H-limit screw on the front derailleur?
The noise I mention isn't due to anything rubbing - the FD works totally fine. The issue is just that there is significant cross-chaining when riding in the big ring and anywhere past the middle of the cassette.
have a RX810 crank on a Topstone with mix of other 10 and 11 speed components
and the drivetrain is relatively quiet (when using both small and large chainrings)
R7000 crank would be an option (and a significant upgrade compared to RX600 crank) - but small chainring would 34t or 36t (compared to 30t of the RX600 crank) ...
what cassette are you using ? could use an 11-30 or 11-32 cassette ... 34-32 low is fairly low (approx 28 gear inches) ... ???
Thanks for the suggestions, but I think a 34t small ring would be a no-go in this circumstance. This is my wife's bike and she really likes the current gearing for going up the steep hills around here while pedaling at 90rpm. I already have an 11-34 cassette on the bike.
I'm curious about why you say the R7000 crank is such an upgrade over the RX600 crank though? I would have assumed they are fairly similar in construction?
That being said, in terms of swapping out the crank, I do also have an new FSA gossamer pro (current model) in 50/34t. I wish I could find some 46/30 chainrings for a decent price, as I think that this would give me a normal "road" chainline (although I'm not sure if they shift as well as Shimano rings?). But I can only find them for $56 each, which is getting close to the cost of the crankset for two rings.
And yes, the drivetrain is "relatively" quiet - I do admit that I'm being a bit of a perfectionist with this chainline change. Things are just a little too cross-chained in the big-big gear combos, so I'm looking to optimize things if possible.