You are Unregistered, please register to use all of the features of Twospoke.com    

Bike and Cycling Forum > Bike Forums > General Bike Discussion >

Shifting Issue


Reply
 
LinkBack Thread Tools Display Modes
Old 08-16-2017, 03:18 PM   #1
cybersnow
Senior
 
cybersnow's Avatar
 
Join Date: Jan 2015
Posts: 520
Liked 466 Times on 231 Posts
Likes Given: 195

Shifting Issue

On my new bike I am experiencing some shifting issues in my rear derailleur. While it seems to shift just fine on the bike stand, when I am climbing or under load it likes to jump gears. I have an 11 speed 11-42 rear cassette, Deore XT derailleur and a Deore SLX shifter. The parts selection was consistent with what Salsa recommended...with the exception of the shifter.

Any ideas how to correct this popping out of gear? The only thing I can think of is to go to a thumb shifters. Ideas?


__________________
You need to take life with a grain of salt (and a slice of lime and a shot of tequila)
cybersnow is offline  
 
Reply With Quote Quick reply to this message
Old 08-16-2017, 04:01 PM   #2
middleman21009
Junior Member
 
Join Date: May 2015
Posts: 120
Liked 167 Times on 66 Posts

Might meet to adjust the cable tension you tube adjusting rear derailleur


middleman21009 is offline  
cybersnow Likes This 
Reply With Quote Quick reply to this message
Old 08-16-2017, 04:04 PM   #3
retromike3
retromike3
Bikes
 
Join Date: Dec 2009
Posts: 274
Liked 77 Times on 37 Posts

Is it shifting up or down? Meaning: when you ease the pedaling, to say does it shift to the to the bigger gear in the back or the smaller one?
retromike3 is offline  
cybersnow Likes This 
Reply With Quote Quick reply to this message
Old 08-16-2017, 04:52 PM   #4
cybersnow
Senior
 
cybersnow's Avatar
 
Join Date: Jan 2015
Posts: 520
Liked 466 Times on 231 Posts
Likes Given: 195

Checked the parts against each other. Seems to be all correct. I don't have a bike stand, but the upper and lower limits look correct. I think you are right in terms of cable tension.

Here is how I understand to adjust...please feel free to correct me.

If the gear is not moving down when I shift then I adjust CCW or tighten
If the gear is not moving up when I shift then I adjust CW or loosen
If the gear jumps up when under load then I tighten
If the gear jumps down when under load then I loosen

High=smaller gear

Will take it out and try to adjust
__________________
You need to take life with a grain of salt (and a slice of lime and a shot of tequila)
cybersnow is offline  
 
Reply With Quote Quick reply to this message
Old 08-16-2017, 05:26 PM   #5
i12ride
Spin Spin Spin
 
i12ride's Avatar
Bikes
 
Join Date: Feb 2013
Posts: 2,759
Liked 2842 Times on 1493 Posts
Likes Given: 1577

OK, you shuld have 2 points of adjustment - 1 on the rr derailleur itself (barrel) & 1 microadjust barrel on the shifter. If it is that close then I would eyeball the chain line from derailleur to cogs in a middle gear and see which way it needs to be adjusted to line up chain in straight line. If that doesn't show you then I would ride with it jumping and use the adjuster on the shifter in each direction until it stops. Then I would shift up 1 gear and then down 1 gear and make it shift in both directions equally fast. If it shifts slower to smaller cog then loosen the shifter barrel and if it shifts slower to big cog then tighten the shifter barrel.....all while riding. Sounds like you just need to use the shifter adjuster in 1 direction or the other while riding and make it stop skipping.

This advice is if this is happening in all gears. If it is just doing this in middle gear or 2 then I would check cog spacing and make sure spacer is in right place or there at all where the loose cogs meet the bigger attached set of cogs. If it does this in all gears no matter what then I would suspect chain/chainring/cog imcompatibility but doesn't sound like you changed anything to affect that relationship only swapping shifter/derailleur.
__________________
I've lived on the edge long enough to have earned taking up a little extra space!

Last edited by i12ride; 08-16-2017 at 05:34 PM.
i12ride is offline  
cybersnow Likes This 
Reply With Quote Quick reply to this message
Old 08-17-2017, 02:58 AM   #6
maelochs
Old, fat, and slow
 
Join Date: Aug 2017
Posts: 15
Liked 17 Times on 11 Posts
Likes Given: 43

Look up "Indexing" on the Park Tools website. (http://www.parktool.com/blog/repair-help/rear-derailleur-adjustment)
maelochs is offline  
 
Reply With Quote Quick reply to this message
Old 08-17-2017, 03:19 PM   #7
i12ride
Spin Spin Spin
 
i12ride's Avatar
Bikes
 
Join Date: Feb 2013
Posts: 2,759
Liked 2842 Times on 1493 Posts
Likes Given: 1577

There, now we gots science involved....................
__________________
I've lived on the edge long enough to have earned taking up a little extra space!
i12ride is offline  
 
Reply With Quote Quick reply to this message
Old 08-17-2017, 06:22 PM   #8
cybersnow
Senior
 
cybersnow's Avatar
 
Join Date: Jan 2015
Posts: 520
Liked 466 Times on 231 Posts
Likes Given: 195

Thanks for the URL, I looked at several Utube videos. I turned the bike upside down and since it has no adjustment on the rear derailleur, adjusted the shifter so the sprocket on the derailleur and the center gear were both centered on the chain. Ran through all the gears, seemed to shift ok. Took the bike out on the closest hill and climbed up shifting up and down through the gears...didn't notice any jumping. Though I did notice that on the two granny gears (36&42) there was a slight spin on the pedals as the gear engaged. Normal?

Thanks everyone, learned a little more about bikes!!!
__________________
You need to take life with a grain of salt (and a slice of lime and a shot of tequila)
cybersnow is offline  
 
Reply With Quote Quick reply to this message
Old 08-17-2017, 06:25 PM   #9
cybersnow
Senior
 
cybersnow's Avatar
 
Join Date: Jan 2015
Posts: 520
Liked 466 Times on 231 Posts
Likes Given: 195

Bike, ready for its first 50+ mile ride
File Type: jpg IMG_5186.jpg (87.4 KB, 7 views)
__________________
You need to take life with a grain of salt (and a slice of lime and a shot of tequila)
cybersnow is offline  
 
Reply With Quote Quick reply to this message
Old 08-17-2017, 06:26 PM   #10
i12ride
Spin Spin Spin
 
i12ride's Avatar
Bikes
 
Join Date: Feb 2013
Posts: 2,759
Liked 2842 Times on 1493 Posts
Likes Given: 1577

ride captain ride...............


__________________
I've lived on the edge long enough to have earned taking up a little extra space!
i12ride is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Shifting Adjustments Codejockey Beginners Forum 6 04-10-2010 02:38 AM
Shifting with Downtubes Janie Road Bikes 5 10-20-2009 06:31 PM
shifting gears properly johnny Beginners Forum 21 10-07-2009 04:43 PM
Shifting Gears backroader Road Bikes 3 07-06-2009 05:35 PM