Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

New Wheelset - Normal to have to adjust setup?

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

New Wheelset - Normal to have to adjust setup?

Old 05-06-22, 05:50 AM
  #1  
ZHVelo
Senior Member
Thread Starter
 
Join Date: Apr 2020
Location: Zurich, Switzerland
Posts: 708
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 421 Post(s)
Liked 180 Times in 132 Posts
New Wheelset - Normal to have to adjust setup?

So with my new wheelset the disc brakes are rubbing, the shifting seems not quite as smooth (Ultegra Di2) and the drivetrain seems louder. Is this normal?

As a note, when my bike was new, I played around a lot with the rear derailleur to quieten the drivetrain, to the point where it was actually not super smooth to go into the lowest gear (34-32) but this setup was more quiet. Over time it became easier to shift into that gear. Now with the new wheel (and new cassette and new chain) it is once again more difficult to shift into the lowest gear, however, unlike before it is quite noisy. So also considering the brake rub, it seems things aren't exactly in the same place as they were with the old wheelset.

I will have to try and play around with the setup again, but just wanted to know if this is 'normal'.
ZHVelo is offline  
Old 05-06-22, 06:48 AM
  #2  
delbiker1 
Mother Nature's Son
 
delbiker1's Avatar
 
Join Date: Mar 2016
Location: Sussex County, Delaware
Posts: 2,429

Bikes: Early 90's Ochsner road, 2006 Schwinn SS DBX, 2014 Orbea Avant MD30, 2004 Airborne Zeppelin TI, 2003 Lemond Poprad, 1989? Fuji Ace, 2001 Lemond Tourmalet, 2014? Soma Smoothie

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 637 Post(s)
Liked 886 Times in 512 Posts
IME, rarely can you change wheel sets without some adjustments to the derailleur. Disc brakes add another adjustment that may need to be done. Neither is hard. This can be true even if replacing with the same model of wheels. However, I am not familiar with Di2. My bikes need no more electronics.
delbiker1 is offline  
Likes For delbiker1:
Old 05-06-22, 12:59 PM
  #3  
ZHVelo
Senior Member
Thread Starter
 
Join Date: Apr 2020
Location: Zurich, Switzerland
Posts: 708
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 421 Post(s)
Liked 180 Times in 132 Posts
Originally Posted by delbiker1 View Post
IME, rarely can you change wheel sets without some adjustments to the derailleur. Disc brakes add another adjustment that may need to be done. Neither is hard. This can be true even if replacing with the same model of wheels. However, I am not familiar with Di2. My bikes need no more electronics.
Thanks, yea I think the rear disc is now good, I had to twist the caliper in the right position. And sound seems to have at least to a large part come from me switching to wax and not having properly removed the excess. It is now at a point where I feel on the road I won't hear it anymore.

Front is more of an issue, it almost looks as if the pads have become misaligned because no way I twist the caliper can I see light on both sides. The pads just look too tight together now. I also ****ed up and leaked some brake fluid somehow so that will be more of a project now.
ZHVelo is offline  
Old 05-06-22, 01:03 PM
  #4  
zacster
Senior Member
 
Join Date: Jul 2004
Location: Brooklyn NY
Posts: 7,382

Bikes: Kuota Kredo/Chorus, Trek 7000 commuter, Trek 8000 MTB and a few others

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Liked 316 Times in 247 Posts
Here is something I harped on once in a thread. All of these components are supposed to meet a standard with some pretty tight tolerances. If you get everything within that tolerance it should just work, and that include swapping wheels. No adjustments should be necessary.

In your case either you've adjusted the bike out of that tolerance or the new component is out of tolerance. So yes, you need to adjust something to make it all work again. One thing to adjust, and someone else would've said it too, is your derailleur hanger. There is an assumption that it is straight and parallel to the plane of the wheel. It is possible that one of your previous adjustments was to compensate for a slightly bent hanger. Usually a bent der hanger is a source of noise. In any case you should be able to get it all to work quietly again. Oh, and with Di2, isn't the derailleur adjustment electronic? No more barrels to turn! I don't know much about disc brakes though, so probably you just need a caliper adjustment.

The big PITA these days is that there are so many competing standards. What works with one group doesn't work with the other. You just can't mix and match anymore. Hmmm, but maybe Di2 gets around that since you can adjust the pull ratio?
zacster is offline  
Likes For zacster:
Old 05-06-22, 01:05 PM
  #5  
Polaris OBark
Dirt Roadie
 
Polaris OBark's Avatar
 
Join Date: Jan 2022
Posts: 836
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 476 Post(s)
Liked 551 Times in 336 Posts
You probably need to re-seat the pistons, which is best done simply by pushing the pads apart with this tool (or something similar, like a broad, blunt cold chisel):



You can probably just do a top-off bleed if you need to replace some brake fluid from the f-up.

I wasn't clear if you want to go back and forth between wheelsets, but if so, you can get shims for brake rotors so they both occupy the same spatial position relative to the calipers, which saves you having to adjust anything. (I do this, but still sometimes have to push the pads apart a wee bit).
Polaris OBark is offline  
Old 05-06-22, 02:21 PM
  #6  
Iride01
MotuekaCascadeChinook
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 10,594

Bikes: '20 Tarmac Disc Comp '78 Raleigh Competition GS

Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 4286 Post(s)
Liked 2,828 Times in 1,971 Posts
Where was the noise coming from? Chain rub on the front DR is more on my new bike with Ultegra Di2 than it was on my Paramount with Shimano 105 5800 11 speed. The chain stays are shorter on the Tarmac so the chain is more angled so it isn't easy to get it quiet from chain rub.

Changing wheels probably just put the cassette in a slightly different position and maybe more to the bad side. But if you run your Di2 in full syncro, then it'll never be in the Big Big combo that gives the most fits. And you'll have a better chance of getting the noise adjusted out if you are having rub in the small front/ big rear combo.

As for the brake, the body of the brake has slotted holes. So just loosen the bolts holding it to the frame and you can adjust it if needed. If you are going to be swapping wheels, then you might need to shim the rotor or hub to one side. Or start bending the rotor and have fun! However if it's just the pads and not the brake body that is in the way then push the pucks back in the cylinders and they'll figure out where they need to be after you actuate the brake lever a few times. After the wheel and rotor are in place of course.

Last edited by Iride01; 05-06-22 at 02:27 PM.
Iride01 is offline  
Old 05-06-22, 02:35 PM
  #7  
cxwrench
Senior Member
 
cxwrench's Avatar
 
Join Date: Jul 2013
Location: Nor-Cal
Posts: 3,030

Bikes: lots

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 1499 Post(s)
Liked 2,141 Times in 1,116 Posts
To answer the OP's question, yes, it is normal to have to adjust.
cxwrench is offline  
Old 05-06-22, 02:51 PM
  #8  
squirtdad
Senior Member
 
squirtdad's Avatar
 
Join Date: Jul 2006
Location: San Jose (Willow Glen) Ca
Posts: 8,417

Bikes: 85 team Miyata (modern 5800 105) , '84 Team Miyata,(dura ace old school) 80?? SR Semi-Pro 600 Arabesque

Mentioned: 87 Post(s)
Tagged: 0 Thread(s)
Quoted: 1708 Post(s)
Liked 1,274 Times in 796 Posts
Originally Posted by zacster View Post
Here is something I harped on once in a thread. All of these components are supposed to meet a standard with some pretty tight tolerances. If you get everything within that tolerance it should just work, and that include swapping wheels. No adjustments should be necessary.

In your case either you've adjusted the bike out of that tolerance or the new component is out of tolerance. So yes, you need to adjust something to make it all work again. One thing to adjust, and someone else would've said it too, is your derailleur hanger. There is an assumption that it is straight and parallel to the plane of the wheel. It is possible that one of your previous adjustments was to compensate for a slightly bent hanger. Usually a bent der hanger is a source of noise. In any case you should be able to get it all to work quietly again. Oh, and with Di2, isn't the derailleur adjustment electronic? No more barrels to turn! I don't know much about disc brakes though, so probably you just need a caliper adjustment.

The big PITA these days is that there are so many competing standards. What works with one group doesn't work with the other. You just can't mix and match anymore. Hmmm, but maybe Di2 gets around that since you can adjust the pull ratio?
it should vs is does is a big difference.

I am of the club that IME switching wheels requires some tweaking, index shifting every time and friction most of the time, but have gotten lucky once or twice.

the tweaking can often only a little bit....i.e twist or 2 of the barrel adjuster but I always check derailler hi/lo and then adjust derailler
squirtdad is offline  
Old 05-06-22, 03:04 PM
  #9  
Troul 
:D
 
Troul's Avatar
 
Join Date: Oct 2013
Location: Mich
Posts: 5,373
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 1,689 Times in 1,162 Posts
if you measure from the backside of the cassette to the outside edge of the NDS cap of the previous wheel, you should be able to install a spacer/shim(s) to achieve a close lateral spacing for the cogs. As mentioned already, you can shim out the disc to push it outboard if that is the tolerance you need to fill.

A little hi/lo is typically all that is needed if the wheel assembly is built right using decent parts.
__________________
-Oh Hey!
Troul is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.