Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-18-12, 03:18 PM   #1
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
damaged Dérailleur

here is my damaged Derailleurs
Attached Images
File Type: jpg IMG_0258.JPG (96.2 KB, 205 views)
File Type: jpg IMG_0259.JPG (86.2 KB, 99 views)
File Type: jpg IMG_0260.JPG (95.3 KB, 87 views)
File Type: jpg IMG_0261.JPG (71.2 KB, 85 views)
File Type: jpg IMG_0262.JPG (76.3 KB, 84 views)
avtandil is offline   Reply With Quote
Old 02-18-12, 03:22 PM   #2
wrk101
DRF aka Thrifty Bill
 
wrk101's Avatar
 
Join Date: Jan 2008
Location: The NC Mountains
Bikes: 86 Katakura Silk, 87 Prologue, 87 Cimarron, 14 frame school custom, 73 Paramount
Posts: 19,976
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Step one: replace that cable and the cable housing. It is shot, and even a new derailleur will not solve that (and cable and housing is cheap).

Is there a brand name and model on that derailleur? Looks like you are using a long cage now.

Again, read the Park tool site instructions, they are terrific.
wrk101 is offline   Reply With Quote
Old 02-18-12, 03:22 PM   #3
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,668
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 220 Post(s)
Sorry?.

I don't see anything wrong with it other than a frayed cable. What is the actual problem it's having.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is online now   Reply With Quote
Old 02-18-12, 03:35 PM   #4
Bianchigirll 
Bianchi Goddess
 
Bianchigirll's Avatar
 
Join Date: Apr 2009
Location: Camp Hill, PA
Bikes: Too many to list here check my signature.
Posts: 22,436
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
While the ghost effect is a pretty cool trick it makes it hard to see any problem.

Just how is it broke? does not shift? does the chain run off the idler pulley?

__________________
Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,

Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape
Bianchigirll is offline   Reply With Quote
Old 02-18-12, 03:35 PM   #5
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
oh its shimano but don't know the model name.......i think i am using break cables for shifters......i was told that they could work well....
avtandil is offline   Reply With Quote
Old 02-18-12, 03:37 PM   #6
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
sorry about ghost effect i shot it with my iphone...... the problem is that when i shift from the lower wheel chain fells...maybe tooth are worn out?
avtandil is offline   Reply With Quote
Old 02-18-12, 03:40 PM   #7
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i have decided to buy new 105 shimano 5700, both front and rear and 9 speed 12-30 cassette.....problem is that where i am now i know much more then the local bicycle mechanic so fixing is not option...if fix i prefer o it on my own
avtandil is offline   Reply With Quote
Old 02-18-12, 03:45 PM   #8
Bianchigirll 
Bianchi Goddess
 
Bianchigirll's Avatar
 
Join Date: Apr 2009
Location: Camp Hill, PA
Bikes: Too many to list here check my signature.
Posts: 22,436
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
if the chain is falling (dropping) off the chainwheels (at the crank) it may just be an adjustment issue.
__________________
Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,

Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape
Bianchigirll is offline   Reply With Quote
Old 02-18-12, 03:53 PM   #9
jimc101
Senior Member
 
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Bikes:
Posts: 4,772
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
What speed is the cassette? from the photo it looks to be a 7 speed (hard to tell with the ghosting). if you have a 7 speed cassette, then the freehub may not be forward compatible with 9 speed cassettes.

For the model number, if it is Shimano. this will be stamped on the rear of the parallelogram.

For using brake cable as shifter cables, you can't do this, as the nipple on the brake cable won't fit into the shifter; and they are too large a diameter to fit the gear outers.

For the shifting, and the teeth being worn, although it's hard to tell due to the ghosting, they don't look to bad, ths shifting can be fixed by adjusting, see the Park Tools site http://www.parktool.com/blog/repair-...illeur-systems or Shimano Tech Docs http://techdocs.shimano.com/techdocs/index.jsp for how to.

Would suggest initally just replacing the cables, inner & outer, setting up the RD correctly should fix your issues without needing to buy new parts
jimc101 is offline   Reply With Quote
Old 02-18-12, 04:15 PM   #10
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
rd is 9 speed
avtandil is offline   Reply With Quote
Old 02-18-12, 04:23 PM   #11
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,668
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 220 Post(s)
For what it's worth, I think we're approaching this wrong. the OP has opened 2 threads on the subject and is getting a bunch of opinions piecemeal without getting an overall sense of his problem.

I think it would be best for the OP, if he take a break, and review a number of tutorials about rear derailleur installation (link to over a dozen), so he can see the big picture and narrow the range of his problems (if any besides adjustments). Once he's close and can identify one or two specific remaining issues, then maybe we can help.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is online now   Reply With Quote
Old 02-18-12, 04:44 PM   #12
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by FBinNY View Post
For what it's worth, I think we're approaching this wrong. the OP has opened 2 threads on the subject and is getting a bunch of opinions piecemeal without getting an overall sense of his problem.

I think it would be best for the OP, if he take a break, and review a number of tutorials about rear derailleur installation (link to over a dozen), so he can see the big picture and narrow the range of his problems (if any besides adjustments). Once he's close and can identify one or two specific remaining issues, then maybe we can help.
good advice...... thank you....i have just one concern that moves me...will my gear take to my trip safely.....even if i fix them? or i have to change them...i checked some tutorials how to install and adjust Dérailleur but i found that these two screws ( that u move Dérailleur left to right are not working properly) so is it worth to fix it?
avtandil is offline   Reply With Quote
Old 02-18-12, 05:37 PM   #13
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,668
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 220 Post(s)
Quote:
Originally Posted by avtandil View Post
good advice...... thank you....i have just one concern that moves me...will my gear take to my trip safely.....even if i fix them? or i have to change them...i checked some tutorials how to install and adjust Dérailleur but i found that these two screws ( that u move Dérailleur left to right are not working properly) so is it worth to fix it?
this is exactly why I suggested you review a few tutorials (not just one) until you have a sense of the basic adjustments and a sense of how derailleurs actually work.

For example the two screws I think you're asking about don't actually move the derailleur, only the cable does that. The two "limit screws" do exactly what their name says. They set the inside and outer limits to it's range of movement.

By way of analogy imagine an elevator. The cable and motor make it go up and down. At the top and bottom of the shaft are switches that cut the power if the elevator gets that far, so it can't crash into the end of the shaft (limit screws) and the control board (levers) control the motor making it stop at each floor, and not between floors.

As I said, put the bike near your computer and watch the tutorials while also looking at your own bike, and eventually the light will go on and the entire picture will come into focus.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is online now   Reply With Quote
Old 02-18-12, 06:10 PM   #14
Bill Kapaun
Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
Posts: 9,274
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
http://www.parktool.com/blog/repair-help
Bill Kapaun is offline   Reply With Quote
Old 02-18-12, 06:14 PM   #15
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by FBinNY View Post
this is exactly why I suggested you review a few tutorials (not just one) until you have a sense of the basic adjustments and a sense of how derailleurs actually work.

For example the two screws I think you're asking about don't actually move the derailleur, only the cable does that. The two "limit screws" do exactly what their name says. They set the inside and outer limits to it's range of movement.

By way of analogy imagine an elevator. The cable and motor make it go up and down. At the top and bottom of the shaft are switches that cut the power if the elevator gets that far, so it can't crash into the end of the shaft (limit screws) and the control board (levers) control the motor making it stop at each floor, and not between floors.

As I said, put the bike near your computer and watch the tutorials while also looking at your own bike, and eventually the light will go on and the entire picture will come into focus.
the screws i have mentioned is moving derailleur left or right (i mean the lower wheel) it seems there is no straight line between derailleur (low wheel) and cassette (at highest or lowest position) so i though that two little screws could fix my problem but then i have found that i could not move them
avtandil is offline   Reply With Quote
Old 02-18-12, 06:24 PM   #16
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i am so jealous of ppl who have brand new bicycles assembled by professionals
avtandil is offline   Reply With Quote
Old 02-18-12, 06:33 PM   #17
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,668
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 220 Post(s)
Quote:
Originally Posted by avtandil View Post
i am so jealous of ppl who have brand new bicycles assembled by professionals
Yes, that makes it easier, but even those need work eventually. I've mailed Chain-L to people in Tbilisi, so I know there are some cyclists there, but don't know if there's a shop. You might scout around and see if there's a local racing club (mtb or road) where someone might help you.

Or you might check with some of the hotels that rent bikes, to see who services them, or maybe this guy who rents bikes to tourists can help or refer you to someone.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is online now   Reply With Quote
Old 02-18-12, 06:38 PM   #18
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by FBinNY View Post
Yes, that makes it easier, but even those need work eventually. I've mailed Chain-L to people in Tbilisi, so I know there are some cyclists there, but don't know if there's a shop. You might scout around and see if there's a local racing club (mtb or road) where someone might help you.

Or you might check with some of the hotels that rent bikes, to see who services them, or maybe this guy who rents bikes to tourists can help or refer you to someone.
lol man u r adorable, awesome and cool thank you
avtandil is offline   Reply With Quote
Old 02-18-12, 07:12 PM   #19
Homebrew01
Super Moderator
 
Homebrew01's Avatar
 
Join Date: Jul 2004
Location: Ffld Cnty Connecticut
Bikes: Old Steelies I made, Old Cannondales
Posts: 19,710
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 110 Post(s)
Quote:
Originally Posted by FBinNY View Post
For what it's worth, I think we're approaching this wrong. the OP has opened 2 threads on the subject and is getting a bunch of opinions piecemeal without getting an overall sense of his problem.

I think it would be best for the OP, if he take a break, and review a number of tutorials about rear derailleur installation (link to over a dozen), so he can see the big picture and narrow the range of his problems (if any besides adjustments). Once he's close and can identify one or two specific remaining issues, then maybe we can help.
Yes.
As I suggested in one of the other threads, new derailleurs may not be needed. Probably an adjustment problem.
avtandil , please take the time to read the Park tool site, AND better describe the problem.

Here is a glossary to help you use the correct terms. There may be a better glossary, I just did a quick search.
http://www.performancebike.com/bikes...1_BikeGlossary

Also, I count 8 cogs on your cassette. Is that correct ? If you have a 9-speed shifter on your handlebars, then you will not get good shifting. A bike with indexed shifters (most modern bikes like yours) needs to have matching/compatible parts. If you have 8 cogs, then you need the same brand shifter with 8 positions (7 "clicks" plus 1 starting position). You also need an 8-speed chain that is the right width for the cassette cogs.
Since 9 and 10 speed systems squeeze more cogs into the same space, they all have different dimensions and all need to work together as designed. They use narrower chains, and closer spaced "clicks" on the shifters.

Quote:
Originally Posted by avtandil View Post
good advice...... thank you....i have just one concern that moves me...will my gear take to my trip safely.....even if i fix them? or i have to change them...i checked some tutorials how to install and adjust Dérailleur but i found that these two screws ( that u move Dérailleur left to right are not working properly) so is it worth to fix it?
Once they are adjusted properly, then they should be fine for your trip.
The 2 screws that I THINK you are referring to are called "Limit Screws". They don't "do" anything while riding or shifting. One prevents the derailleur from overshifting the largest cog into the spokes and breaking everything. The other prevents overshifting the derailleur past the small cog into the frame's dropout. Once your bike is set-up correctly, you should never need to adjust the limit screws (unless installing a different wheel or new derailleur)
__________________
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike

Last edited by Homebrew01; 02-18-12 at 07:31 PM.
Homebrew01 is offline   Reply With Quote
Old 02-19-12, 02:37 AM   #20
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
well thank you all...
avtandil is offline   Reply With Quote
Old 02-19-12, 04:23 AM   #21
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
lol i just talked to local guy regarding my bike...and he said: ur chain fells off because u shift chain to biggest cog and smallest chain ring.. and on bikes thats not allowed.....
THANKS FOR GLOSSARY-I REALLY NEED IT

AND I HAVE 9 COGS DEFINITELY
avtandil is offline   Reply With Quote
Old 02-19-12, 06:57 AM   #22
RubberLegs
Senior Member
 
RubberLegs's Avatar
 
Join Date: Mar 2011
Location: Tampa Bay, Florida
Bikes: 87 Bridgestone 550 (Shocking Electric Metallic Pink)
Posts: 1,730
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cross Chaining...ie big ring to big ring, or small ring to small ring, causes excessive wear on chain and sprocket teeth...and poor shifting. Been there, Done that! Sounds like your town needs a bike shop! I think we have 6 of them within 2 miles of me! (one just closed, a bit too much competition)
RubberLegs is offline   Reply With Quote
Old 02-19-12, 07:16 AM   #23
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by RubberLegs View Post
Cross Chaining...ie big ring to big ring, or small ring to small ring, causes excessive wear on chain and sprocket teeth...and poor shifting. Been there, Done that! Sounds like your town needs a bike shop! I think we have 6 of them within 2 miles of me! (one just closed, a bit too much competition)
but could it be reason chain to slip of?
avtandil is offline   Reply With Quote
Old 02-19-12, 07:41 AM   #24
Homebrew01
Super Moderator
 
Homebrew01's Avatar
 
Join Date: Jul 2004
Location: Ffld Cnty Connecticut
Bikes: Old Steelies I made, Old Cannondales
Posts: 19,710
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 110 Post(s)
Quote:
Originally Posted by avtandil View Post
but could it be reason chain to slip of?
No, being in the big chainring and big cog, or small-small can be a bit noisy, it should still work.

What gear are you in when it slips off ? Can you show a picture of it when it has slipped off ? Saying "The chain slipped off" is not enough information.
__________________
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike
Homebrew01 is offline   Reply With Quote
Old 02-19-12, 09:24 AM   #25
avtandil
Senior Member
Thread Starter
 
avtandil's Avatar
 
Join Date: Feb 2012
Location: tbilisi, georgia
Bikes: custom
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Homebrew01 View Post
No, being in the big chainring and big cog, or small-small can be a bit noisy, it should still work.

What gear are you in when it slips off ? Can you show a picture of it when it has slipped off ? Saying "The chain slipped off" is not enough information.
chain fells of from lower pulley
avtandil is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 04:11 PM.