Shimming cassette away from spokes?
#1
Junior Member
Thread Starter
Join Date: Mar 2019
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Shimming cassette away from spokes?
I have been running a 11/40 x8 with a old altus derailer it still works ok but starting to get a little sloppy.
When I bought the cassette I also bought a sunrace Shimano comparable deraier. The cage was heavier than the altus and it hit the spokes.
Can I get/make a .050 inch give or take shim to clear the spokes.
The bike is almost a 1x, main front is 34 oval in the middle position. But I use a fraction shifter to drop onto a 22t and I can use the biggest 3 or 4 gears before the chain starts flop shifting.
I am an old man trying to deal with Arizona grades
Thanks
Tony
When I bought the cassette I also bought a sunrace Shimano comparable deraier. The cage was heavier than the altus and it hit the spokes.
Can I get/make a .050 inch give or take shim to clear the spokes.
The bike is almost a 1x, main front is 34 oval in the middle position. But I use a fraction shifter to drop onto a 22t and I can use the biggest 3 or 4 gears before the chain starts flop shifting.
I am an old man trying to deal with Arizona grades
Thanks
Tony
#2
Really Old Senior Member
I'd get a better RDER.
#3
Senior Member
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,319
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 1,092 Times
in
723 Posts
I agree but if you insist there are 1mm and 1.8mm and possibly other spacers available, but if you space the cassette too far out you run the risk of not engaging enough of the lockring threads into the freehub and having one or the other threads strip.
#4
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
I have been running a 11/40 x8 with a old altus derailer it still works ok but starting to get a little sloppy.
When I bought the cassette I also bought a sunrace Shimano comparable deraier. The cage was heavier than the altus and it hit the spokes.
Can I get/make a .050 inch give or take shim to clear the spokes.
The bike is almost a 1x, main front is 34 oval in the middle position. But I use a fraction shifter to drop onto a 22t and I can use the biggest 3 or 4 gears before the chain starts flop shifting.
I am an old man trying to deal with Arizona grades
Thanks
Tony
When I bought the cassette I also bought a sunrace Shimano comparable deraier. The cage was heavier than the altus and it hit the spokes.
Can I get/make a .050 inch give or take shim to clear the spokes.
The bike is almost a 1x, main front is 34 oval in the middle position. But I use a fraction shifter to drop onto a 22t and I can use the biggest 3 or 4 gears before the chain starts flop shifting.
I am an old man trying to deal with Arizona grades
Thanks
Tony
#5
Made in Taiwan
Join Date: Sep 2008
Location: Vancouver
Posts: 205
Bikes: Camerotti ti roadbike, Old Sears Free Spirit Tange Hi-Ten Single Speed built from a 12 speed, 1997 Cannondale CAD3 r500 with Shimano 6400 groupset
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked 11 Times
in
9 Posts
A properly set up rear derailleur, should never be able to contact the spokes. I would check to see if the RD hanger on the bike is bent. If the hanger is straight, then most likely the replacement derailleur itself is bent/damaged.
__________________
All dogs want to be lap dogs doesn't matter the size
-Animal loving friend
All dogs want to be lap dogs doesn't matter the size
-Animal loving friend
#6
Really Old Senior Member
Apparently you would rather band aid a kludge than fix it right?
OP stated-"I have been running a 11/40 x8 with a old altus derailer it still works ok but starting to get a little sloppy...."
Last edited by Bill Kapaun; 10-19-19 at 09:21 PM.
#7
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
I didn't insist ANYTHING. Where did you get that assumption? It really pisses me off when people misquote me or try to put words in my mouth.
Apparently you would rather band aid a kludge than fix it right?
OP stated-"I have been running a 11/40 x8 with a old altus derailer it still works ok but starting to get a little sloppy...."
Apparently you would rather band aid a kludge than fix it right?
OP stated-"I have been running a 11/40 x8 with a old altus derailer it still works ok but starting to get a little sloppy...."
#8
Really Old Senior Member
#9
Senior Member
Switch to an 11-42 or 11-46 cassette to get more clearance between the spokes and derailleur. Consider dishing the rim a little bit left.
#10
Señor Member
Join Date: Feb 2013
Posts: 5,066
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 649 Post(s)
Liked 292 Times
in
215 Posts
Bad advice. The dish should be kept so that the rim is centred between the axle locknuts, otherwise you are throwing off the balance of the bike. You would be solving one problem by creating another.
The best suggestion so far is to get a derailleur with a less bulky cage, if that is indeed the reason for the derailleur hitting the spokes. Check hanger alignment before changing anything, though.
The best suggestion so far is to get a derailleur with a less bulky cage, if that is indeed the reason for the derailleur hitting the spokes. Check hanger alignment before changing anything, though.
#11
Senior Member
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 30,225
Bikes: Catrike 559 I own some others but they don't get ridden very much.
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1572 Post(s)
Liked 643 Times
in
364 Posts
Whenever I encounter ANY rear shifting issue that I can't fix by adjusting cable tension the first thing that I do is to check hanger alignment. Most times, that's it.
__________________
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
#12
Senior Member
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 4,141
Bikes: More bikes than riders
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1446 Post(s)
Liked 762 Times
in
570 Posts
Park Tool has a very nice resource on derailleur adjustment that should help you out.
https://www.parktool.com/blog/repair...eur-adjustment
#13
Señor Member
Join Date: Feb 2013
Posts: 5,066
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 649 Post(s)
Liked 292 Times
in
215 Posts
Hi, Tony. This is a bit of a red flag for me. The weight of the derailleur cage should not influence whether or not the cage can come into contact with the spokes. It sounds like your derailleur is not setup properly, including correct use of the low and high limit screws.
Park Tool has a very nice resource on derailleur adjustment that should help you out.
https://www.parktool.com/blog/repair...eur-adjustment
Park Tool has a very nice resource on derailleur adjustment that should help you out.
https://www.parktool.com/blog/repair...eur-adjustment
#14
Senior Member
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 4,141
Bikes: More bikes than riders
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1446 Post(s)
Liked 762 Times
in
570 Posts
It certainly is possible to space the cassette outboard, using any number of 1mm shims. You can usually source these at your local bike shop for little coin (literally!). What model derailer is this, specifically? It will probably have a part number somewhere, perhaps on the inner link arm.
#15
Señor Member
Join Date: Feb 2013
Posts: 5,066
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 649 Post(s)
Liked 292 Times
in
215 Posts
I and others have suggested it is likely an issue of derailleur hanger alignment, or other adjustment. Adding shims and pushing the cassette outboard would not be my desired course of action as this will lessen the number of threads engaged on the cassette lock ring and could lead to damage to the ring or (less likely) the cassette body... those lock rings need to be horsed on there good 'n' tight, so I would not think it to be a good idea to reduce thread engagement.
#16
Junior Member
Thread Starter
Join Date: Mar 2019
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
hanger is new. chain has never been in a bind
It was all new except the derailleur when installed. There is also an extinction to make the bigger cog work. 34 40 makes for a long chain that's giving me problems.
A small shim moved the cassette a lot, but the long csge derailleur is just too big. although the shim aligned the front and rear sprockets bettet and I can use more cogs on the small ring
someone said the bike needs a better rider, maybe so. Im 62 years old and have 6 to 12 percent grades on the road plus a 15% driveway once and a while.
Riding is better than pushing
thanks for all the suggestions
A small shim moved the cassette a lot, but the long csge derailleur is just too big. although the shim aligned the front and rear sprockets bettet and I can use more cogs on the small ring
someone said the bike needs a better rider, maybe so. Im 62 years old and have 6 to 12 percent grades on the road plus a 15% driveway once and a while.
Riding is better than pushing
thanks for all the suggestions
I and others have suggested it is likely an issue of derailleur hanger alignment, or other adjustment. Adding shims and pushing the cassette outboard would not be my desired course of action as this will lessen the number of threads engaged on the cassette lock ring and could lead to damage to the ring or (less likely) the cassette body... those lock rings need to be horsed on there good 'n' tight, so I would not think it to be a good idea to reduce thread engagement.
#17
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
Just because the bike and/or hanger are new doesn't mean they can't be bent slightly. I'd still take it to a shop to rule that out.