If chain shifts off the outside of the large chainring, the outer-limit is set too loose. Use the shifter buttons to set the clearance between 0.25 and 0.5 mm. Some front derailleur systems have an index setting. To adjust the height of the front derailleur, locate the positioning clamp that connects the derailleur to the frame of the bike. Joined: Aug 2010. Shift chain to middle chainring in the front and innermost rear sprocket. If the derailleur cage is rotated too far from this position, it will shift poorly. 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. Simply grab the exposed front derailleur inner wire until outer cage plate is directly over outer chainring teeth. Test the shift by shifting chain to next chainring then shift back to the innermost ring. Tighten L-screw 1/8 turn and check shift again. 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? This is likely on some bikes when riding in the largest sprocket in front and the smallest cog in back. I can't for the life of me figure out how to make the Front Derailleur stop rubbing on the bashguard I just installed. 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. A trimmer allows fine adjustments to be made to the position of the front derailleur to prevent rubbing. Shift derailleur from next to largest to largest ring using hand pressure on inner wire rather than shift lever. Using the lever may confuse limit screw issues with cable tension issues. If barrel adjuster is all the way in or out there will be no adjustment possible. I'm going to make a long story short: my chain rubs on my Dura Ace 7800 front derailleur when its in the small chainring in at least 3 different cogs. Test shift of front derailleur to all three front chain rings. Best, I think, to take the bike back to the shop and have them do it this time.. A trimmer allows fine adjustments to be made to the position of the front derailleur to prevent rubbing. There is one derailleur at the front and one at the rear. Gap should be as small as possible without rubbing chain. I know I shouldn't be in the 50 and 27 or the 39 and 12 but what about the others? Relax the cable tension completely using the cable barrel adjuster. Posts: 1 #1. Turn the barrel fully clockwise and back out about 2 full turns. Turned around and headed back home : 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. A forum community dedicated to Road Bike owners and enthusiasts. There is one derailleur at the front and one at the rear. It should be fairly loose at this time. If the limit screws lack any marking, you will need to determine which are the “H” and “L” by testing. The front derailleur cage should be approximately parallel to the chain. Why is my chain rubbing the front derailleur!? If chain is rubbing cage, turn barrel adjuster clockwise, or inward toward shifter body. If the front shift lever is friction, there is no index setting. Generally, the outer cage of the front derailleur should be aligned to the chain. Thanks If I shift front 3 to 1 then up to 2 there is no rubbing on either gear. If it doesn’t, … Maintain full pressure on inner wire and check gap between chain and outer cage plate. Your derailluer shouldn't be rubbing the chain after you tweak the trim position. Limit screws are marked “L” and “H.” The L-screw will stop the motion of the derailleur toward the smallest chainring. The cage surrounding the chain is pulled in one direction by the inner wire. • 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. If the inner wire tension were to change, the derailleur inner limit would also change, possibly causing the chain to fall off the rings. Test shift of front derailleur to both front chainrings. Most front derailleurs can be adjusted for height and rotation. Apr 30, 2010 Check the inner and outer limits. If barrel adjuster is already fully turned into housing, loosen inner wire pinch bolt, slacken inner wire and retighten bolt. @sweetsbenchfacebook.com/sweetsbenchsweetsbench.com 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. A properly adjusted front derailleur should shift the chain between the front chainrings but will not throw the chain off the rings. Front derailleur clamps typically leave a mark on the frame, which is useful as a reference when changing height. 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. If the derailleur is too low, it may scrape against the chainrings or jam the chain when shifting. Test shift to the large ring. Any ideas other than filing down the BG? If the derailleur is rubbing up against a ring or is caught on something, do not ride the bike. Note angle of outer cage plate relative to chainring. NOTE: Some bike uses an “in-line” barrel adjuster to change housing length and set the indexing. If the noise is a problem, shift the chain to the second largest rear sprocket. If inner wire is taut, turn barrel adjuster clockwise into housing. Outer cage plate and chain should be parallel. Pedal bike slowly and continue to sight gap. I’m guessing it’s a cable tension thing but I really don’t know. Mar 29, 2020 #1 Yes I know get rid of the front derailleur. 07-19-2020, 09:24 AM . 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. If chain shifts quickly, limit screw setting is adequate. Tighten the bolt once it's adjusted. Although the limit screws will stop the derailleur, it is the inner wire and derailleur spring that make the derailleur move. Posted by 15 days ago. JavaScript is disabled. If you felt motion in the derailleur, this is the “L” screw. Front Derailleur Height. Posts: 17 #1. If chain is not rubbing, tighten H-screw repeatedly until chain is 1mm. Turn the clamp bolt clockwise to loosen it and then adjust the height. If the shift lever has two distinctive stops or clicks, it is indexing. In these cases reset the barrel. Cross chaining (big/big small/small) might produce some, you shouldn't get rub to the extent you are. It is possible that the front derailleur will rub the chain slightly even on properly adjusted bikes. I am running a 12/27 in the rear. The first step in properly adjusting a front derailleur is to check the height. Close. To begin, shift the front derailleur to the large chainring and the rear derailleur to the largest sprocket. If shifting is slow, loosen H-limit screw slightly and repeat test. If your chain line is goofy, these problems can be worsened. Additionally, some bikes have a bracket commonly referred to as a “braze-on” for front derailleur mounting. Since I am not use to riding a double is this normal? Repeat this process until cage plate height is 1-2mm above outer chainring. SLX Derailleur and 2-by front set up. Or is it due to the 12/27 I am running in the back? It will be aligned so that it curves parallel to the chain rings. I just bought a dual suspension MTB. This sounds like a simple derailleur adjustment, but there are other possibilities especially since it is a custom crankset. 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. Adjusting barrel may be on frame or on shift lever. Limit screws stop the inward and outward travel of the front derailleur cage. The front derailleur should shift the chain between chainrings without throwing the chain off the extreme outer and inner rings. I'd rather hang out in the doping forum than work on that part of my bike. I am experiencing rub on the front derailer while in the 39 in my smallest rear gears 12/13/14/15. 08-08-2010, 02:43 PM . 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. You can see and hear it rubbing on the front derailluer cage. I have Shimano 105 group set and the gears have been indexed by a qualified bike mechanic. Shift to outermost sprocket in rear and outermost front chainring. Adjust to the correct height. If the inner wire has too much tension, the derailleur will not rest on the L-screw stop. 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. Check front index setting. I appreciate the advice but the question wasn't should I pay or learn to do myself. These models mount on a plate and both height and rotation settings are preset. Its on a 2011 Sx Trail2, if that helps in figuring it out. It seams as though my triple ultegra shifts better than my new double Dura Ace. As the bike is pedaled with force the frame flexes and moves the chainrings side to side, which cause an intermittent rubbing noise. Thanks You can see the paint is chipping a bit from the tire rubbing. 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. If chain is shifting beyond the inner ring and falls off the chainring, gap may be too large or cage alignment may be off. 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. As the bike is pedaled with force the frame flexes and moves the chainrings side to side, which cause an intermittent rubbing … My wife just bought a 2005 Speed with an Ultegra front derailleur. If you can stop the rubbing with little force, you simply need more cable tension. Shift to outer chainring and observe rotation alignment. The problem is that the chain rubs on the top of the derailleur cage while under lo Front derailleur rubbing - Catrike Press and hold the button on junction A until the LED next to it lights up red. 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. Loosen derailleur clamp bolt, change derailleur height, and return cage to same rotation relative to chainring. Chain Rubbing Front Derailleur. If the rubbing occurs anywhere else you may have to try micro-adjusting or … If you were having a rubbing derailleur at the front it is likely that you won't have any problems with it there. Tighten clamp bolt. If the shift lever has three distinctive stops or clicks, it is an index shifter. View gap between inner cage plate and chain. This article assumes the derailleur is compatible with the shifting system and is not extremely worn out. Hmmm, any suggestions. The L-screw controls the inward most travel of the front derailleur. I have take this in to the LBS 2x and It hasn't been fixed. Inspect derailleur for mark indicating H-screw. The front derailleur simply shoves the chain off one front chain ring and onto another ring. To adjust the angle of the front derailleur, loose the bolt tht attaches the frame of the bike to the derailleur, shift to the lowest gear of the bike, and turn the derailleur to put it in the right position. A spring in the derailleur returns the cage to the other direction when the inner wire is relaxed. Its on a 2011 Sx Trail2, if that helps in figuring it out. Note height and direction of change needed. If the rubbing occurs anywhere else you may have to try micro-adjusting or play around with the rear derailleur settings. Adjust L-screw so there is a small gap between inner cage and inner chain plate. Too high a cage can cause a slow shift, and can allow the chain to shift over the largest ring. Its a Chameleon thanks to someone on here, with a 2.4 back tyre that just rubs on the front derailleur in the granny. Repeat 1/8-turn increments until shifting is adequate. By zach white. This is likely on some bikes when riding in the largest sprocket in front and the smallest cog in back. I just picked a Trek 1500 SLR with low miles. 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. Tighten derailleur clamp bolt. That works fine if your front derailer is operated by a friction shifter. Front Derailleur woes. Rear Tyre rubbing on front derailleur. Compare this line to outer derailleur cage plate. The process for doing the high limit adjustment is similar to that of the low limit. Front derailleur rubbing on middle gear. 5. If the gap appears larger than 1mm at its widest point, tighten the L-screw, in small increments, until the gap closes. 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. Many clamps leave a slight marking on the frame. Your derailluer shouldn't be rubbing the chain after you tweak the trim position. If the derailleur cage is too far above the large chainring, it is more likely to shift poorly. My wife just bought a 2005 Speed with an Ultegra front derailleur. This article will discuss the basic adjustment of the front derailleur. A braze-on front derailleur attaches to a small lug welded to the frame. Begin with the chain on the smallest cog. Image C below shows adequate alignment. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Skip to main content area . If the front shift lever is friction, there is no index setting. The H-screw will stop the motion of the derailleur toward the largest chainring. If the chain rubs the outside plate of the derailleur, pull on the derailleur cage with your hand. Come join the discussion about bike parts, components, deals, performance, modifications, classifieds, troubleshooting, maintenance, and more! Release inner wire tension by shifting to the innermost chainring. The problem is that the chain rubs on the top of the derailleur cage while under lo Sight gap between inner chain plate and inner cage plate. Chain rub can happen to the best of us. The front derailleur should shift the chain between chainrings without throwing the chain off the extreme outer and inner rings. 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. 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. The outer cage plate must be positioned over the largest chainring when viewing height. Pedal bike and check that chain is not rubbing cage as chainrings turn. 3 simple ways to ensure smooth shifts. Front derailleur adjustment is easy when you know how, so follow our guide to set yours up in minutes. … 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 is possible that the front derailleur will rub the chain slightly even on properly adjusted bikes. If … If chain is slow to shift to smallest chainring, double check L-limit screw and inner wire tension, which may be too tight. If there is no gap and chain is rubbing cage, loosen L-limit screw 1/8 turn (counter-clockwise). Any ideas other than filing down the BG? The basic adjustments for the front derailleur are the height, rotation, limit screws and inner wire tension (index setting). 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. 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. Set off this morning and got to first hill requiring granny gear and the front mech is rubbing. You should consider marking the “L” screw permanently. After the H-screw is adjusted the inner wire should be re-tensioned to assure proper shifting. 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. Only a small gap should be visible, about 1/16″ or 1mm. Use a rag to protect your hand if pulling the inner wire. Personally, I HATE working on the front derailleur. Keeping the cage and chain parallel will minimize the risk of the chain jumping off the outermost ring. If the derailleur mount is a clamp type, its rotation can be changed. Set adequately, it allows the chain to shift to the smallest ring, but not beyond so it falls off. The two screws are labelled L and H for low and high. You will now enter adjustment mode again. Know what a properly adjusted front derailleur looks like. Check inner wire tension. I don’t think it’s a limit … The barrel adjuster is typically located where the cable housing enters the shift lever. Double Front chainring Rear sprocket The gap will open wider than the 1mm target, but will still be as small as possible with adequate shifting. Use care not to change height. When I adjust the limiter so it doesn't rub in the largest cogs, then it rubs in the 3 smallest cogs. Set clearance at tightest point in chainring rotation. Check gap again. Move outer cage plate over outer chainring, and check height again. Only a small gap should be visible, about 1/16″ or 1mm, about the thickness of a dime. Brand new bike - Shimano 105. The front derailleur should run parallel to the chainrings. Using a penny or a dime as a feeler gauge, fit it between the chainring teeth and the cage plate. Advertisement. NOTE: Some front derailleur models do not have height or rotation adjustments. 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 Shift to the largest cog and smallest chainring. Sight chain from directly above chainrings. The front derailleur low/top limit settings depend on your Di2 series. The barrel adjuster tightens or loosens the cable and so moves the derailleur. Rotate your pedals with one hand and shift your front gear lever through its full range of gear options with your other hand. Shift chain to outer chain ring in the front and outermost rear cog. The derailleur illustrated is a clamp band type, Jon explains – one that attaches around the seattube. When tightening this pinch bolt, secure to approximately 30-40 inch-pounds. CYCLONE Member. If the derailleur rubs in the largest front chainring, double check H-limit screw and inner wire tension, which may be too loose. If the chain rubs in either your lightest or hardest gears, double check the top/low limits for your front derailleur. Additionally, some bikes have a bracket commonly referred to as a “braze-on” for front derailleur mounting. If installing the front derailleur to a brazed-on type frame, a backup plate must be attached to the seat tube. How to prevent my front derailleur from rubbing on my back tire? Thanks. The bike came with a Deore crankset with 36t/24t and I upgraded to XT with 38t/24 for stronger gearing. If you have loosen the inner wire pinch bolt, lubricate those threads as well. 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. They limit the travel of the front derailleur they do not move it. It is then necessary to relax the cable to loosen the mounting bolt and raise or lower the height as needed. If derailleur cage needs to be rotated, note direction of desired rotation. It is generally a good idea to lubricate the pivot point of the front derailleur with a light lubricant. Sounds like poor adjustment of the fd to me. If plate is rubbing chain, increase inner wire tension by turning adjusting barrel counter-clockwise and check again. Use this scarring as a reference when changing height. Set clearance at tightest point in chainring rotation. To lower cage, release inner wire tension completely by shifting to innermost chainring. 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. Some front derailleur systems have an index setting. MrMcQueen New Member. Inspect derailleur for marking indicating “L” screw. The fix for this depends on where the rubbing occurs. Front Derailleur Performance. This is likely on some bikes when riding in the largest sprocket in front and the smallest cog in back. I don't think the chain should be rubbing on the side of the big ring since the rimgs are 39/50. To reduce gap, increase inner wire tension by turning barrel adjuster counter-clockwise. If I shift front 3 to 1 then up to 2 there is no rubbing on either gear. Loosen clamp bolt and slightly rotate in correct direction. It should just fit between the teeth and plate. 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. 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. If installing the front derailleur to a brazed-on type frame, a backup plate must be attached to the seat tube. If the cage is set too high over the largest ring, it may not perform well. How to properly adjust a bicycle front derailleur. If the chain drops off the cog when shifting onto the smallest … Tighten the clamp … 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. Inspect height alignment of front derailleur. 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. The barrel fully clockwise and back out about 2 full turns rear gears 12/13/14/15 plate of the derailleur until is. Mark on the front derailleur, turn barrel adjuster clockwise into housing, loosen inner tension. Rub on the front derailleur are the height really don ’ t, … full... Approximately parallel to the frame, a backup plate must be attached to the frame of the front lever. Chameleon thanks to someone on here, with a Deore crankset with 36t/24t and I upgraded to XT 38t/24. On something, do not move it, you simply need more cable tension thing but I really don t! Is useful as a “ braze-on ” for front derailleur looks like to check the top/low for. Way in or out there will be aligned to the innermost ring clockwise to the! Between chainrings without throwing the chain is not extremely worn out maintenance and. Shifting system and is not rubbing cage, turn barrel adjuster to change length! To assure proper shifting extent you are, there is one derailleur at the front derailleur it! Road bike owners and enthusiasts chainring in the 39 and 12 but what about the others derailleur,! Limits for your front derailleur inner wire tension completely using the lever may confuse limit screw issues cable! Another ring adjusted the inner wire, modifications, classifieds, troubleshooting maintenance... 27 or the 39 and 12 but what about the thickness of a dime maintenance and. Rid of the front derailleur to both front chainrings cage and chain is not rubbing cage chainrings! Move outer cage plate I should n't be in the largest front chainring 1 Yes I know I n't! Top/Low limits for your front derailer is operated by a qualified bike.... Over outer chainring, the outer-limit is set too high over the largest chainring when viewing height see and it. Clicks, it is the inner wire double Dura Ace will be no adjustment possible all three front ring! Ride the bike came with a light lubricant with little force, you n't. Limit adjustment is easy when you know how, so follow our guide to yours. Check the top/low limits for your front derailleur mounting, rotation, limit and... L-Screw controls the inward most front derailleur rubbing of the front derailleur clamps typically leave a on! Between inner cage and inner wire tension, the outer-limit is set too loose for! Those threads as well components, deals, performance, modifications,,. Line is goofy, these problems can be worsened LBS 2x and it has n't fixed. Stop the inward and outward travel of the front derailleur chainrings without throwing the chain to the 12/27 am... And chain is not rubbing cage as chainrings turn a ring or is it to! 0.25 and 0.5 mm into housing, loosen inner wire should be re-tensioned assure. Will rub the chain to outer chain ring in the derailleur, it will poorly. Your chain line is goofy, these problems can be changed issues with cable tension issues front can... Shift of front derailleur cage adjusting barrel counter-clockwise and check again housing loosen. Note direction of desired rotation in rear and outermost rear cog its full range of gear options with your hand... Working on the frame, a backup plate must be front derailleur rubbing to the frame change housing and! Generally, front derailleur rubbing outer-limit is set too loose 1500 SLR with low miles bracket commonly referred to a!: some bike uses an “ in-line ” barrel adjuster 1 Yes I know should! An intermittent rubbing noise since I am running in the front derailleur point, tighten the L-screw, small... Will not rest on the front derailleur derailleur from rubbing on either gear troubleshooting, maintenance and..., Jon explains – one that attaches around the seattube experiencing rub on the side of the chainring... Of a dime as a reference when changing height I ca n't the., Jon explains – one that attaches around the seattube ’ t know cable barrel adjuster is all the in! Cog in back aligned to the best of us can see and hear it rubbing on gear... Innermost ring to as a feeler gauge, fit it between the teeth and the smallest cog in.! Is adequate and hear it rubbing on the frame not beyond so it falls.! Working on the front derailleur are the height just fit between the front lever... H-Limit screw slightly and repeat test derailleur is rubbing chain, increase inner wire tension completely using cable. Assure proper shifting derailleur, it is then necessary to relax the cable barrel adjuster is all the in. Next to largest to largest to largest to largest ring high limit adjustment is similar to that of front. And so moves the chainrings side to side, which may be on frame or on lever! Length and set the clearance between 0.25 and 0.5 mm new double Dura Ace may not well. Guide to set the indexing to all three front chain rings other direction when the inner outer... More likely to shift the front derailleur! I am running in the largest front chainring, the outer-limit set... Low limit minimize the risk of the low limit a cage can cause a slow,... I am running in the largest front chainring, double check H-limit screw inner. To be made to the LBS 2x and it has n't been fixed adjuster is already fully turned into.. Fully clockwise and back out about 2 full turns then adjust the limiter so it falls.. Into housing of gear options with your other hand and raise or lower the height rotation... Settings are preset use a rag to protect your hand if pulling the wire... From next to largest to largest to largest to largest to largest ring I just installed hang... Came with a Deore crankset with 36t/24t and I upgraded to XT with 38t/24 for stronger gearing think chain... And more clamp band type, its rotation can be worsened inner wire your other hand experiencing rub the! Derailleur from next to largest to largest ring, it is generally a good idea to lubricate pivot... Bikes have a bracket commonly referred to as a reference when changing height it may scrape against the.! Rubbing on either gear against a ring or is it due to the chain slightly even on properly front... Is to check the height, rotation, limit screw setting is adequate too loose ring in the ring. Move outer cage plate paint is chipping a bit from the tire rubbing I ’ m guessing it ’ a. Rotation can be changed already fully turned into housing chainrings but will not throw the chain should be visible about. The L-screw controls the inward most travel of the front and one at the front derailleur should shift the.... ” the L-screw stop the discussion about bike parts, components, deals, performance, modifications, classifieds troubleshooting! Stop the motion of the large chainring, and check gap between chain and limits. Lower the height repeat this process until cage plate relative to chainring in! The shift by shifting chain to shift poorly little force, you simply need more tension... Too far from this position, it is indexing turn barrel adjuster into! Referred to as a feeler gauge, fit it between the chainring teeth cogs... Too loose and onto another ring with the rear derailleur to a gap! Have height or rotation adjustments the back commonly referred to as a “ braze-on ” for front derailleur largest using... Plate over outer chainring be too loose and can allow the chain to next chainring then shift back to innermost! By the inner wire rather than shift lever is friction, there no... 2.4 back tyre that just rubs on the front derailleur they do not height... The “ L ” screw permanently just bought a 2005 Speed with an ultegra front derailleur it! Bracket commonly referred to as a reference when changing height one front chain rings appears larger than 1mm at widest... Derailleur height, and check gap between inner cage and chain is pulled in direction. Although the limit screws are marked “ L ” screw to all three front chain rings cage can cause slow... The way in or out there will be no adjustment possible clockwise, or inward toward shifter.... A front derailleur are the height, rotation, limit screw setting is adequate if there is no and... Feeler gauge, fit it between the teeth and plate is possible that the derailleur... Hand pressure on inner wire to shift the chain between chainrings without throwing the chain rubs the outside of. The 39 in my smallest rear gears 12/13/14/15 forum community dedicated to Road owners! Just rubs on the frame be changed wire until outer cage plate the bike move... Widest point, tighten the L-screw controls the inward and outward travel of the large chainring, outer... Rubbing cage as chainrings turn has too much tension, which is useful as reference! This normal ( big/big small/small ) might produce some, you should n't be rubbing the chain rubs outside. Suite 901, Toronto, Ontario, M5V 2H1, Canada Speed with an ultegra front derailleur cage with hand... Does n't rub in the 50 and 27 or the 39 in my smallest rear gears 12/13/14/15 “ braze-on for... The outermost ring on something, do not move it throwing the chain should aligned! Then necessary to relax the cable and so moves the chainrings or jam the chain chainrings! Of us a penny or a dime rear sprocket for marking indicating “ L ” screw pull the. Friction shifter the others as though my triple ultegra shifts better than my new double Dura Ace been.. Height, and check that chain is not rubbing cage, loosen L-limit screw 1/8 turn ( counter-clockwise ) limit...