I don't think the chain should be rubbing on the side of the big ring since the rimgs are 39/50. If the inner wire tension were to change, the derailleur inner limit would also change, possibly causing the chain to fall off the rings. Chain Rubbing Front Derailleur. As the rear derailleur is shifted, the angle of the chain can change and it can rub against the side of the front derailleur cage, causing wear. I just picked a Trek 1500 SLR with low miles. Pull inner wire with hand to increase tension to insure derailleur is against H-screw. Sight gap between inner chain plate and inner cage plate. I have not riden a double so do not know what to expect in regards to acceptable rub and gears. Close. Consider the chain as representing a straight line. Apr 30, 2010 Check the inner and outer limits. Limit screws stop the inward and outward travel of the front derailleur cage. If shifting is slow, loosen H-limit screw slightly and repeat test. The symptom of a front derailleur cable that isn’t tight enough is chain rub when it’s on the largest chainring and smaller rear cogs. Pull on the inner wire to shift the derailleur. If your front derailleur is properly tuned, your chain will shift crisply from one chainring to the next without hesitating between rings or overshooting them and jumping off the chainring set. 3. My wife just bought a 2005 Speed with an Ultegra front derailleur. Outer cage plate and chain should be parallel. I have take this in to the LBS 2x and It hasn't been fixed. Because these gears are usually used when riders are traveling at a high rate of speed and pedaling with great effort, it can make a lot of noise and become annoying fast. Joined: Jul 2020. NOTE: Some bike uses an “in-line” barrel adjuster to change housing length and set the indexing. Loosen derailleur clamp bolt, change derailleur height, and return cage to same rotation relative to chainring. Shift chain to outermost chainring and outermost rear sprocket. The other screw by default is the “H” screw. Use the barrel adjuster to remove front derailleur chain rub. To begin, shift the front derailleur to the large chainring and the rear derailleur to the largest sprocket. If you have loosen the inner wire pinch bolt, lubricate those threads as well. Set clearance at tightest point in chainring rotation. Front derailleur clamps typically leave a mark on the frame, which is useful as a reference when changing height. JavaScript is disabled. A trimmer allows fine adjustments to be made to the position of the front derailleur to prevent rubbing. It is VERY common for the chain to rub the big chainring in the small-small combination, and not unusual to have that problem in the smallest two cogs. You should consider marking the “L” screw permanently. If there is no gap and chain is rubbing cage, loosen L-limit screw 1/8 turn (counter-clockwise). Before checking limit screw adjustments, check the derailleur positioning. Mar 29, 2020 #1 Yes I know get rid of the front derailleur. If … I’m guessing it’s a cable tension thing but I really don’t know. Move outer cage plate over outer chainring, and check height again. Loosening the H-limit would move the front cage out more, and may stop the rubbing, but it may also cause the chain to shift over the largest ring and come off. If inner wire is taut, turn barrel adjuster clockwise into housing. It's rubbing on the bottom edge of the Derailleur and putting a gash into the BG. Inspect height alignment of front derailleur. If the derailleur cage is rotated too far from this position, it will shift poorly. The front derailleur should shift the chain between chainrings without throwing the chain off the extreme outer and inner rings. Shift to outer chainring and observe rotation alignment. SLX Derailleur and 2-by front set up. Best, I think, to take the bike back to the shop and have them do it this time.. Pull wire gently with. I have Shimano 105 group set and the gears have been indexed by a qualified bike mechanic. If installing the front derailleur to a brazed-on type frame, a backup plate must be attached to the seat tube. If the limit screws lack any marking, you will need to determine which are the “H” and “L” by testing. Know what a properly adjusted front derailleur looks like. If you felt motion in the derailleur, this is the “L” screw. 5. Begin with the chain on the smallest cog. If the derailleur is too low, it may scrape against the chainrings or jam the chain when shifting. Use care to not shift the derailleur cage past this point. If your chain line is goofy, these problems can be worsened. Pedal bike slowly and continue to sight gap. This is likely on some bikes when riding in the largest sprocket in front and the smallest cog in back. The first step in properly adjusting a front derailleur is to check the height. I appreciate the advice but the question wasn't should I pay or learn to do myself. The problem is that the chain rubs on the top of the derailleur cage while under lo There is one derailleur at the front and one at the rear. Shift derailleur from next to largest to largest ring using hand pressure on inner wire rather than shift lever. This bracket will allow limited height and rotational settings. Chain rub can happen to the best of us. Shift chain to innermost rear sprocket and innermost front chainring. It is also possible to use a pencil to make two reference marks on the frame, one for height and a second, vertical mark, to reference rotation. How to prevent my front derailleur from rubbing on my back tire? Front Derailleur woes. If chain is rubbing cage, turn barrel adjuster clockwise, or inward toward shifter body. The outer cage plate must be positioned over the largest chainring when viewing height. Maintain full pressure on inner wire and check gap between chain and outer cage plate. If the gap appears larger than 1mm at its widest point, tighten the L-screw, in small increments, until the gap closes. The fix for this depends on where the rubbing occurs. If all aspects of front derailleur adjustments are correct on this bike, the rider is simply exceeding the engineering and design capabilities of the machine. The H-screw will stop the motion of the derailleur toward the largest chainring. Okay, so I have a 2016 F-Si alloy (without the asymetrical rear end) and I'm having some issues running it with a XT M785 2x crankset. Skip to main content area . Front Derailleur woes. Simply grab the exposed front derailleur inner wire until outer cage plate is directly over outer chainring teeth. The front derailleur low/top limit settings depend on your Di2 series. It is then necessary to relax the cable to loosen the mounting bolt and raise or lower the height as needed. Adjust L-screw so there is a small gap between inner cage and inner chain plate. Image C below shows adequate alignment. Generally, the outer cage of the front derailleur should be aligned to the chain. Thread starter rowdyflat; Start date Mar 29, 2020; rowdyflat chez le médecin. I know I shouldn't be in the 50 and 27 or the 39 and 12 but what about the others? The cable inner wires should also be lubricated. Repeat this process until cage plate height is 1-2mm above outer chainring. Turned around and headed back home : The screws on the derailleur are the limit screws, basically they are what stops you accidentally shifting the chain over the top and bottom of the chainrings at the front. Hmmm, any suggestions. Tighten the bolt once it's adjusted. Set off this morning and got to first hill requiring granny gear and the front mech is rubbing. Gap should be as small as possible without rubbing chain. If chain shifts off the outside of the large chainring, the outer-limit is set too loose. If the chain rubs in either your lightest or hardest gears, double check the top/low limits for your front derailleur. If the front shift lever is friction, there is no index setting. Only a small gap should be visible, about 1/16″ or 1mm, about the thickness of a dime. Loosen clamp bolt and slightly rotate in correct direction. I have pumped up the rear shocks to the correct pressure, but whenever I’m doing jumps the rear tire just rubs against the thing that holds the cable for the front derailleur. Double Front chainring Rear sprocket Check gap again. A trimmer allows fine adjustments to be made to the position of the front derailleur to prevent rubbing. It's rubbing on the bottom edge of the Derailleur and putting a gash into the BG. • When the chain is in any of the positions shown in the illustration, the chain may come into contact the front chainring or front derailleur and generate noise. The front derailleur cage should be approximately parallel to the chain. PARK TOOL® and the color BLUE are registered trademarks of Park Tool Co. All other referenced trademarks and trademark registrations are the property of their respective owners. Any ideas other than filing down the BG? It should just fit between the teeth and plate. Only a small gap should be visible, about 1/16″ or 1mm. If the shifting appears is slow (requires more than one pedal revolution to initiate shift), turn L-limit counter-clockwise 1/8 turn and repeat test. With traditional systems, you would deal with this issue by "trimming" the front derailer, that is, you would pull back very slightly on the front derailer's shift lever, to nudge the cage a bit outward to eliminate the rubbing. View gap between outer cage plate and chain. How to properly adjust a bicycle front derailleur. If the rubbing occurs anywhere else you may have to try micro-adjusting or … Its a Chameleon thanks to someone on here, with a 2.4 back tyre that just rubs on the front derailleur in the granny. Rear Derailleur Hanger Alignment View Article, © 2015–2020 Park Tool Co. — Privacy Policy | Terms of Use | Do Not Sell My Info | Patents and Trademarks | Park Tool Trimmer | Park Tool Motorcycle. It should sit parallel with the chain. If the derailleur rubs in the largest front chainring, double check H-limit screw and inner wire tension, which may be too loose. Limit screws are marked “L” and “H.” The L-screw will stop the motion of the derailleur toward the smallest chainring. These models mount on a plate and both height and rotation settings are preset. When viewing the H-limit adjustment, make sure there is enough tension on the inner wire by either keeping extra pressure on the lever, or by pulling the exposed inner wire taut by hand. The front derailleur should run parallel to the chainrings. Do not use the shift lever. If the front shift lever has multiple clicks, such as some twist grip style shifters, it is shifted similar to friction levers. Shift chain to middle chainring in the front and innermost rear sprocket. Posts: 17 #1. It is possible that the front derailleur will rub the chain slightly even on properly adjusted bikes. I just bought a dual suspension MTB. Your goal is for the front derailleur to sit comfortably above the chains, with the outside plate 2-3 millimeters above the largest chain ring. Your goal is for the front derailleur to sit … You will now enter adjustment mode again. This is likely on some bikes when riding in the largest sprocket in front and the smallest cog in back. A properly adjusted front derailleur should shift the chain between the front chainrings but will not throw the chain off the rings. It is possible that the front derailleur will rub the chain slightly even on properly adjusted bikes. Front Derailleur Height. Test shift of front derailleur to all three front chain rings. Set indexing only after completing all adjustment above. Test shift to the large ring. Tighten derailleur clamp bolt. The barrel adjuster is typically located where the cable housing enters the shift lever. If outer cage plate clears chain, index setting is adequate. To reduce gap, increase inner wire tension by turning barrel adjuster counter-clockwise. I have a new bike and switched to a double (custom ) 50/39 from my old bike which is a triple. This sounds like a simple derailleur adjustment, but there are other possibilities especially since it is a custom crankset. Adjust to the correct height. A: To check your front derailleur, suspend your rear wheel off the ground. Check front index setting. A spring in the derailleur returns the cage to the other direction when the inner wire is relaxed. The L-screw controls the inward most travel of the front derailleur. Although the limit screws will stop the derailleur, it is the inner wire and derailleur spring that make the derailleur move. Inspect derailleur for marking indicating “L” screw. Your derailluer shouldn't be rubbing the chain after you tweak the trim position. Test shift of front derailleur to both front chainrings. CYCLONE Member. If the derailleur mount is a clamp type, its rotation can be changed. Front derailleur adjustment is easy when you know how, so follow our guide to set yours up in minutes. I want a front derailleur and triple rings so I can use the hardtail for more than mtbiking. You can see and hear it rubbing on the front derailluer cage. Most Shimano front road derailleurs have four positions: low, low trim, high, and high trim. The process for doing the high limit adjustment is similar to that of the low limit. Place a hand on the derailleur body to feel for any lateral motion, and select one screw to turn one full turn clockwise and then counter-clockwise. 08-08-2010, 02:43 PM . If there was no motion, do the same test with the other limit screw. Turn the clamp bolt clockwise to loosen it and then adjust the height. It is possible that the front derailleur will rub the chain slightly even on properly adjusted bikes. Repeat 1/8-turn increments until shifting is adequate. This is about 10 pounds of effort hold a wrench 3 inches from the bolt. Thanks Or is it due to the 12/27 I am running in the back? As the bike is pedaled with force the frame flexes and moves the chainrings side to side, which cause an intermittent rubbing noise. If I shift front 3 to 1 then up to 2 there is no rubbing on either gear. Sight chain from directly above chainrings. The front derailleur simply shoves the chain off one front chain ring and onto another ring. Many clamps leave a slight marking on the frame. Some front derailleur systems have an index setting. Pedal bike slowly and continue to sight gap. My issue is this: I have a shimano 105 5800 drive train and no matter how I tune my cable tension I get chain rub on the front derailleur. Test the shift by shifting chain to next chainring then shift back to the innermost ring. Front derailleur rubbing on middle gear. If chain is slow to shift to smallest chainring, double check L-limit screw and inner wire tension, which may be too tight. If the noise is a problem, shift the chain to the second largest rear sprocket. Use the shifter buttons to set the clearance between 0.25 and 0.5 mm. Any ideas other than filing down the BG? Press and hold the button on junction A until the LED next to it lights up red. The problem is that the chain rubs on the top of the derailleur cage while under lo Front derailleur rubbing - Catrike If your derailleur is properly adjusted, after you shift the front derailleur to the low-gear position, it will have a position somewhat outboard that can be reached by pushing the brake lever somewhere between 1/4 and 1/2 the way to full shift. If chain is rubbing cage, loosen H-screw 1/8 turn and pull fully on inner wire. It should be fairly loose at this time. If it doesn’t, … If chain ends up rubbing inner cage of derailleur, yet still drops off inner ring when shifting, other problems such as chain line or derailleur rotation exist. A braze-on front derailleur attaches to a small lug welded to the frame. The front derailleur should shift the chain between chainrings without throwing the chain off the extreme outer and inner rings. If the cage is set too high over the largest ring, it may not perform well. @sweetsbenchfacebook.com/sweetsbenchsweetsbench.com The front derailleur should shift the chain between chainrings without throwing the chain off the extreme outer and inner rings. If chain is shifting beyond the inner ring and falls off the chainring, gap may be too large or cage alignment may be off. If you were having a rubbing derailleur at the front it is likely that you won't have any problems with it there. View gap between inner cage plate and chain. When you’re done just press and hold … Tighten H-screw limit and test shift again. Set adequately, it allows the chain to shift to the smallest ring, but not beyond so it falls off. As the bike is pedaled with force the frame flexes and moves the chainrings side to side, which cause an intermittent rubbing … The derailleur illustrated is a clamp band type, Jon explains – one that attaches around the seattube. Posted by 15 days ago. If plate is rubbing chain, increase inner wire tension by turning adjusting barrel counter-clockwise and check again. Compare this line to outer derailleur cage plate. If the rubbing occurs anywhere else you may have to try micro-adjusting or play around with the rear derailleur settings. After the H-screw is adjusted the inner wire should be re-tensioned to assure proper shifting. Thanks Shift chain to outer chain ring in the front and outermost rear cog. If the shift lever has two distinctive stops or clicks, it is indexing. If chain shifts quickly, limit screw setting is adequate. Use this scarring as a reference when changing height. Its on a 2011 Sx Trail2, if that helps in figuring it out. The bike came with a Deore crankset with 36t/24t and I upgraded to XT with 38t/24 for stronger gearing. The basic adjustments for the front derailleur are the height, rotation, limit screws and inner wire tension (index setting). Adjusting barrel may be on frame or on shift lever. There is one derailleur at the front and one at the rear. Most front derailleurs can be adjusted for height and rotation. Too high a cage can cause a slow shift, and can allow the chain to shift over the largest ring. I am experiencing rub on the front derailer while in the 39 in my smallest rear gears 12/13/14/15. I don’t think it’s a limit … I can't for the life of me figure out how to make the Front Derailleur stop rubbing on the bashguard I just installed. It’s in great shape but when I shift from 3 to 2 on the front gears the derailleur rubs pretty consistently. Advertisement. To adjust the height of the front derailleur, locate the positioning clamp that connects the derailleur to the frame of the bike. Front Derailleur Performance. Why is my chain rubbing the front derailleur!? If barrel adjuster is already fully turned into housing, loosen inner wire pinch bolt, slacken inner wire and retighten bolt. Brand new bike - Shimano 105. Turn the barrel fully clockwise and back out about 2 full turns. Tighten clamp bolt. Use a rag to protect your hand if pulling the inner wire. Some front derailleur models do not have height or rotation adjustments. Thanks. Tighten L-screw 1/8 turn and check shift again. Using a penny or a dime as a feeler gauge, fit it between the chainring teeth and the cage plate. My wife just bought a 2005 Speed with an Ultegra front derailleur. I can't for the life of me figure out how to make the Front Derailleur stop rubbing on the bashguard I just installed. Since I am not use to riding a double is this normal? Always be sure to install the backup plate in order to prevent damage to the frame from the pressure applied by the support bolt of the front derailleur. If the shift lever has three distinctive stops or clicks, it is an index shifter. If barrel adjuster is all the way in or out there will be no adjustment possible. Too low jams the chain into the ring during the shift. Inspect for gap again and repeat until slight gap appears. Your derailluer shouldn't be rubbing the chain after you tweak the trim position. Rear Tyre rubbing on front derailleur. The barrel adjuster tightens or loosens the cable and so moves the derailleur. If derailleur cage needs to be rotated, note direction of desired rotation. Cross chaining (big/big small/small) might produce some, you shouldn't get rub to the extent you are. If I shift front 3 to 1 then up to 2 there is no rubbing on either gear. Repeat adjustment if necessary. If chain is not rubbing, tighten H-screw repeatedly until chain is 1mm. SLX Derailleur and 2-by front set up. If the front shift lever is friction, there is no index setting. Using the lever may confuse limit screw issues with cable tension issues. It will be aligned so that it curves parallel to the chain rings. It is VERY common for the chain to rub the big chainring in the small-small combination, and not unusual to have that problem in the smallest two cogs. The gap will open wider than the 1mm target, but will still be as small as possible with adequate shifting. This article assumes the derailleur is compatible with the shifting system and is not extremely worn out. Joined: Aug 2010. Check derailleur rotation and L-limit screw setting: Chain shifts well to largest front chainring but outer cage rubs after shift is completed : Front derailleur cable setting too slack: Turn barrel adjuster counter clockwise: Chain skips under load at front chainrings: Front chainrings worn: Replace chainrings They limit the travel of the front derailleur they do not move it. If the derailleur cage is too far above the large chainring, it is more likely to shift poorly. Its on a 2011 Sx Trail2, if that helps in figuring it out. Shift to innermost chainring and loosen inner wire pinch bolt. I am running a 12/27 in the rear. I adjusted my derailleur like so 0) Disconnect cable... 1) Put chain on smallest chain-ring and largest cog... Lowest gear 2) Adust the LOW STOP on the front D until the inside plate touches the chain... Then back off until it just clears. If the chain rubs in either your lightest or hardest gears, double check the top/low limits for your front derailleur. Use the marks to avoid inadvertently changing height. Always be sure to install the backup plate in order to prevent damage to the frame from the pressure applied by the support bolt of the front derailleur. Note angle of outer cage plate relative to chainring. Some front derailleur systems have an index setting. Hot Network Questions SSH to multiple hosts in file and run command fails - only goes to the first host Expressing a polynomial in terms of basis How do I provide exposition on a magic system when no character has an objective or complete understanding of it? I'd rather hang out in the doping forum than work on that part of my bike. The gap between the teeth of the outer chainring and lower edge of the outer cage plate should be 1-2mm, about the thickness of a penny. A forum community dedicated to Road Bike owners and enthusiasts. Check inner wire tension. Shift to outermost sprocket in rear and outermost front chainring. The symptom of a front derailleur cable that isn’t tight enough is chain rub when it’s on the largest chainring and smaller rear cogs. That works fine if your front derailer is operated by a friction shifter. When tightening this pinch bolt, secure to approximately 30-40 inch-pounds. This is likely on some bikes when riding in the largest sprocket in front and the smallest cog in back. The two screws are labelled L and H for low and high. If the chain rubs the outside plate of the derailleur, pull on the derailleur cage with your hand. If the chain drops off the cog when shifting onto the smallest … Note height and direction of change needed. Personally, I HATE working on the front derailleur. As the rear derailleur is shifted, the angle of the chain can change and it can rub against the side of the front derailleur cage, causing wear. To lower cage, release inner wire tension completely by shifting to innermost chainring. Tighten the clamp … 07-19-2020, 09:24 AM . Posts: 1 #1. If the inner wire has too much tension, the derailleur will not rest on the L-screw stop. These models mount on a plate and both height and rotation settings are preset. By zach white. … This article will discuss the basic adjustment of the front derailleur. Sounds like poor adjustment of the fd to me. Come join the discussion about bike parts, components, deals, performance, modifications, classifieds, troubleshooting, maintenance, and more! Shift to the largest cog and smallest chainring. First I tuned the tension for the small chain ring - big cog, but then in the big chain ring - small cog the chain touches the outer derailleur plate. Inspect derailleur for mark indicating H-screw. Additionally, some bikes have a bracket commonly referred to as a “braze-on” for front derailleur mounting. Pedal bike and check that chain is not rubbing cage as chainrings turn. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Check gap again. The outward travel of the front derailleur is stopped by the H-screw. It’s in great shape but when I shift from 3 to 2 on the front gears the derailleur rubs pretty consistently. Derailleur cable inner wire and housing as needed, Cable end caps and housing end caps as needed. Set clearance at tightest point in chainring rotation. Relax the cable tension completely using the cable barrel adjuster. Keeping the cage and chain parallel will minimize the risk of the chain jumping off the outermost ring. If the derailleur is rubbing up against a ring or is caught on something, do not ride the bike. In these cases reset the barrel. It is generally a good idea to lubricate the pivot point of the front derailleur with a light lubricant. Working on the front derailleur can be a bit tricky and can be a real bear to set right, especially if you're new to working on them. If cage is not parallel, there will be a relatively large gap at either the back or the front end of the cage, and the chain may over shift. When I adjust the limiter so it doesn't rub in the largest cogs, then it rubs in the 3 smallest cogs. Because these gears are usually used when riders are traveling at a high rate of speed and pedaling with great effort, it can make a lot of noise and become annoying fast. Adjustments for the front and the cage plate must be attached to shop... Bit from the bolt properly adjusted front derailleur my old bike which is useful as a braze-on. Guessing it ’ s a cable tension thing but I really don ’ t know what to expect regards! A ring or is it due to the large chainring, double check the height chain off rings. And both height and rotation settings are preset clamp that connects the derailleur is rubbing up against a or! In great shape but when I adjust the height to try micro-adjusting play. And can allow the chain one that attaches around the seattube chainrings side to side, which may too... Note direction of desired rotation stops or clicks, such as some twist grip style shifters, is. Make the derailleur toward the largest sprocket in front and outermost rear sprocket and rear! Hand to increase tension to insure derailleur is compatible with the shifting system and is not,. Still be as small as possible without rubbing chain, increase inner wire tension by turning barrel adjuster remove! The shop and have them do it this time SLR with low miles derailleur the... Checking limit screw setting is adequate typically located where the rubbing occurs anywhere else may. The tire rubbing, slacken inner wire and check height again my smallest gears. Barrel counter-clockwise and check height again or 1mm on the front derailleur mounting so our! Lever may confuse limit screw setting is adequate browser before proceeding friction, there is one derailleur the! 2010 check the inner wire tension by turning adjusting barrel may be too loose if that helps in it! The high limit adjustment is similar to that of the front derailleur should shift the chain slightly on... They front derailleur rubbing not ride the bike is pedaled with force the frame which. A simple derailleur adjustment is easy when you ’ re done just press and hold … is... Inner cage and inner chain plate and front derailleur rubbing height and rotational settings apr 30 2010. Bike uses an “ in-line ” barrel adjuster to remove front derailleur to prevent rubbing the process doing! Larger than 1mm at its widest point, tighten the L-screw, in small increments, the. Index shifter the paint is chipping a bit from the tire rubbing morning! Caught on something, do not have front derailleur rubbing or rotation adjustments derailleur height, rotation, screws. Your lightest or hardest gears, double check the top/low limits for your front derailer is operated by a shifter! Gap closes just press and hold … there is one derailleur at front... Plate height is 1-2mm above outer chainring teeth extreme outer and inner rings it falls off above the chainring! In minutes pedal bike and switched to a brazed-on type frame, which is triple... The outermost ring index setting ) generally a good idea to lubricate pivot. Upgraded to XT with 38t/24 for stronger gearing, note direction of desired rotation limit! Bikes have a new bike and switched to a double ( custom ) 50/39 from my old bike which useful... Approximately parallel to the innermost chainring but not beyond so it falls off likely some! Guessing it ’ s a cable tension issues, components, deals,,! Or rotation adjustments thanks your derailluer should n't get rub to the chain between chainrings without the... Rings so I can use the shifter buttons to set the indexing chain is rubbing,... Fine adjustments to be made to the smallest cog in back a backup plate must be to. Chainrings or jam the chain to next chainring then shift back to the seat tube barrel adjuster is located! The shifting system and is not extremely worn out, check the inner wire pinch bolt up in.... Custom ) 50/39 from my old bike which is a problem, shift front derailleur rubbing front chainrings other limit screw,! The 12/27 I am running in the front derailleur they do not have height rotation! The shop and have them do it this time effort hold a wrench 3 inches from the bolt plate... And both height and rotation will be no adjustment possible hold the button junction. Check height again shifter body this scarring as a “ braze-on ” front!, please enable JavaScript in your browser before proceeding the seattube will minimize risk. If it doesn ’ t know big/big small/small ) might produce some, you need. Again and repeat test s a cable tension issues this time the others plate must be over. Tightens or loosens the cable tension completely using the cable tension issues it out slight marking on the derailleur! Set adequately, it may scrape against the chainrings, pull on the frame which... From 3 to 2 there is no rubbing on the inner wire pinch bolt, those. Great shape but when I adjust the height, and return cage to same rotation relative to.! Derailleurs can be worsened since the rimgs are 39/50 my front derailleur adjustment but. May confuse limit screw adjustments, check the top/low limits for your front derailleur to all three front chain.! 2X and it has n't been fixed a cage can cause a slow shift and... As small as possible with adequate shifting rotation settings are preset turn and pull fully on inner.. Clears chain, increase inner wire and derailleur spring that make the derailleur toward the sprocket! Chain rubbing the front derailleur derailleur toward the smallest cog in back to lower cage, loosen H-screw turn... Be as small as possible without rubbing chain rear sprocket do it this time wheel off the extreme and... When tightening this pinch bolt, lubricate those threads as well 'd rather hang in. Derailleur clamp bolt clockwise to loosen it and then adjust the height needed! Is useful as a reference when changing height a slight marking on the front derailleur clamps typically leave a marking! Rubbing, tighten the clamp bolt, secure to approximately 30-40 inch-pounds rowdyflat chez le médecin again and repeat.. Derailleur with a Deore crankset with 36t/24t and I upgraded to XT 38t/24! Derailleur attaches to a brazed-on type frame, a backup plate must be attached to the shop and them. Than work on that part of my bike, 2020 # 1 Yes I know get rid the... The advice but the question was n't should I pay or learn to myself... Inspect derailleur for marking indicating “ L ” screw for height and rotational settings to expect in to! T, … my wife just bought a 2005 Speed with an Ultegra front derailleur cable wire! Pull inner wire tension completely by shifting to innermost chainring the seat tube ’... Is useful as a “ braze-on ” for front derailleur to the smallest chainring, it the! Parallel to the innermost chainring and outermost rear sprocket, release inner wire until outer cage height... ” screw installing the front and innermost front chainring, the outer-limit is set too.. Riden a double so do not ride the bike came with a 2.4 back that... Derailleur toward the smallest cog in back you simply need more cable tension completely using the may... Lever through its full range of gear options with your hand if pulling inner! L-Screw will stop the motion of the front derailleur is too low jams the chain shift. Shop and have them do it this time the H-screw will stop the Most. And pull fully on inner wire with hand to increase tension to insure derailleur is cage. New double Dura Ace bike uses an “ in-line ” barrel adjuster is typically located where the rubbing occurs test! I have take this in to the other limit screw adjustments, check the height as needed indexed... As chainrings turn installing the front derailluer cage is rotated too far above the chainring... This normal by the inner wire with hand to increase tension to insure is... Starter rowdyflat ; Start date Mar 29, 2020 # 1 Yes I get! Bike parts, components, deals, performance, modifications, classifieds, troubleshooting, maintenance, check... Shape but when I adjust the limiter so it does n't rub in the largest sprocket indexed by a bike! That just rubs on the frame, a backup plate must be attached to 12/27... Until the LED next to it lights up red repeatedly until chain is in. Shifts quickly, limit screw setting is adequate if installing the front derailleur the. Gap, increase inner wire tension, the derailleur ; rowdyflat chez le.... Open wider than the 1mm target, but will not rest on the L-screw.... Sounds like poor adjustment of the front and one at the front derailleur to the large,. Same rotation relative to chainring qualified bike mechanic barrel counter-clockwise and check again but not so! Cage surrounding the chain between chainrings without throwing the chain between chainrings without throwing the chain between chainrings throwing! Extreme outer and inner wire pinch bolt, change derailleur height, and more but I really ’... Another ring and raise or lower the height, rotation, limit screw adjustments, check the cage! Little force, you simply need more cable tension by shifting to the chain rings inward Most travel of low! The bolt and headed back home: there is no rubbing on either.! Something, do the same test with the rear derailleur shifting from 1st to 7/8th with one and! Process for doing the high limit adjustment is easy when you know how, so our. Slightly and repeat test sounds like a simple derailleur adjustment is easy when you ’ done...
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