AlanW
Legendary Member
- Location
- Not to sure?
So the back story first, I run either Hunt carbon wheels or for the winter Hunt 4 Season wheels fitted with a 12sp 11/30 cassette. The groupset is Ultegra Di2 and it all works 100% as it should, perfect and silent gear changes every single time no matter what wheels are used.
Fast forward to this week. I have just purchased a pair of Hunt Allroad wheels and a 12sp 11/34 cassette, which will be fitted to the above bike on the odd occasion that I fancy doing some gravel or tow path rides.
Now comes the annoying bit, for reasons that are completely baffling me right now, when the chain is on the fourth sprocket (24T) it makes a "ticking" noise that suggests that the rear derailleur needs a little tweak to realign it. But it doesn't do it on any other sprocket other than the fourth one, and it only does it when in the big ring, in this case a 50T?
Every other gear combo is perfect, but select 50/24 and away it ticks???
However, if I put an 11/30 cassette on the same wheel, nothing at all, totally silent.
Which suggests to me that the fault is with the cassette, the last four sprockets (34, 30, 27 and 24) on the cassette are all riveted together, so that rules out me putting the wrong size spacer in between them. So unless Shimano have built it incorrectly which I doubt, I really don't know what else to try?
Of course I may be able to adjust miss-alignment out on the fourth sprocket using the E Tube app, but then it makes swapping wheels over more of a faff if I have to keep readjusting the rear mech each and every time. Plus the fact, if I can put the 11/30 cassette on and it shifts as it should, then adjustment isn't the definitive answer.
I know how folk on here, like a challenge, so here you have one, any suggestions??
I have contacted the shop where I purchased it from to see if there are any issues with the machining of the sprockets, and apparently not? I guess the easy (if expensive) way to find out, is to buy another 11/34 cassette. But they are certainly not cheap and I don't expect to have to replace the current one anytime soon to be honest.
Fast forward to this week. I have just purchased a pair of Hunt Allroad wheels and a 12sp 11/34 cassette, which will be fitted to the above bike on the odd occasion that I fancy doing some gravel or tow path rides.
Now comes the annoying bit, for reasons that are completely baffling me right now, when the chain is on the fourth sprocket (24T) it makes a "ticking" noise that suggests that the rear derailleur needs a little tweak to realign it. But it doesn't do it on any other sprocket other than the fourth one, and it only does it when in the big ring, in this case a 50T?
Every other gear combo is perfect, but select 50/24 and away it ticks???
However, if I put an 11/30 cassette on the same wheel, nothing at all, totally silent.
Which suggests to me that the fault is with the cassette, the last four sprockets (34, 30, 27 and 24) on the cassette are all riveted together, so that rules out me putting the wrong size spacer in between them. So unless Shimano have built it incorrectly which I doubt, I really don't know what else to try?
Of course I may be able to adjust miss-alignment out on the fourth sprocket using the E Tube app, but then it makes swapping wheels over more of a faff if I have to keep readjusting the rear mech each and every time. Plus the fact, if I can put the 11/30 cassette on and it shifts as it should, then adjustment isn't the definitive answer.
I know how folk on here, like a challenge, so here you have one, any suggestions??
I have contacted the shop where I purchased it from to see if there are any issues with the machining of the sprockets, and apparently not? I guess the easy (if expensive) way to find out, is to buy another 11/34 cassette. But they are certainly not cheap and I don't expect to have to replace the current one anytime soon to be honest.
