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techtalk:ref:genmsr05 [2024/01/15 19:53] hippysmack |
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| ====== Comparing Noises From Other Bikes ====== | ====== Comparing Noises From Other Bikes ====== | ||
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| Imports are liquid cooled, and that in and of itself kills a lot of engine noise that would normally get to your ears due to: ((DG_Sportster of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/efi-sportster-motorcycle-talk-2007-and-up/97463-engine-noise?t=823082)) \\ | Imports are liquid cooled, and that in and of itself kills a lot of engine noise that would normally get to your ears due to: ((DG_Sportster of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/efi-sportster-motorcycle-talk-2007-and-up/97463-engine-noise?t=823082)) \\ | ||
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| ===== Handlebars ===== | ===== Handlebars ===== | ||
| - | Handle bars are kind of like tuning forks. ((Moved On of the XLFORUM http://xlforum.net/forums/showthread.php?t=45811&page=2)) \\ | + | Handle bars are kind of like tuning forks. ((Moved On of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/27681-nickels-in-the-handlebars/page2?t=45811&page=2)) \\ |
| They'll have a place that they want to resonate. \\ | They'll have a place that they want to resonate. \\ | ||
| To change the resonant frequency one can either lengthen the forks or weight them down. \\ | To change the resonant frequency one can either lengthen the forks or weight them down. \\ | ||
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| These are not a fix to end all problems, but to possibly lesson some of them if you're having excessive vibration problems in the bars. \\ | These are not a fix to end all problems, but to possibly lesson some of them if you're having excessive vibration problems in the bars. \\ | ||
| - | * **Inspect / Replace the mounting bushings**: \\ There should be a certain amount of "play" that the OEM rubber bushings should have when installed. ((Alexintenn of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005987)) \\ If they are tightened too much, with zero slack in the bushings, the rubber is compressed and you essentially have a rigid mounted bar. \\ The over-compression of the rubber bushings negate the ability of them to help with the vibration. \\ If you loosen the bars enough to have more play, it helps a lot. \\ And, since some use use a bolt which feeds up into the risers, there is no nut on the bottom to loosen. ((RussW of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005987)) | + | * **Inspect / Replace the mounting bushings**: \\ There should be a certain amount of "play" that the OEM rubber bushings should have when installed. ((Alexintenn of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/188257-handlebar-vibes-solution?t=2005987)) \\ If they are tightened too much, with zero slack in the bushings, the rubber is compressed and you essentially have a rigid mounted bar. \\ The over-compression of the rubber bushings negate the ability of them to help with the vibration. \\ If you loosen the bars enough to have more play, it helps a lot. \\ And, since some use use a bolt which feeds up into the risers, there is no nut on the bottom to loosen. ((RussW of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/188257-handlebar-vibes-solution?t=2005987)) |
| - | * The compression of the bushing is dictated by the thickness of the top clamp and the length of the spacer in the bushings. \\ There are steel caps that cover the bushings. That is your bolt spacer and your torque guide. ((einheit 13 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005987)) \\ Those washers are 'shouldered' to wrap around the outside of the bushing. This keeps them from wallowing around. \\ If the bushings are worn out or the washers are deformed-it's a losing battle. \\ You are either gonna have bad vibes or 'rowing' bars. | + | * The compression of the bushing is dictated by the thickness of the top clamp and the length of the spacer in the bushings. \\ There are steel caps that cover the bushings. That is your bolt spacer and your torque guide. ((einheit 13 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/188257-handlebar-vibes-solution?t=2005987)) \\ Those washers are 'shouldered' to wrap around the outside of the bushing. This keeps them from wallowing around. \\ If the bushings are worn out or the washers are deformed-it's a losing battle. \\ You are either gonna have bad vibes or 'rowing' bars. |
| * You put enough pressure on them to compress the collars and stop when you see the washers starting to flex. \\ These washers get deformed from people cranking down on the bolts. \\ If the bolts don't fit snugly in the bushings, you need sleeves. \\ You can do this with some kind of metal tubing, heat shrink tubing, electrical tape, or a larger bolt. \\ Ace Hardware has a pretty good selection of bronze, rubber, and neoprene bushings also. | * You put enough pressure on them to compress the collars and stop when you see the washers starting to flex. \\ These washers get deformed from people cranking down on the bolts. \\ If the bolts don't fit snugly in the bushings, you need sleeves. \\ You can do this with some kind of metal tubing, heat shrink tubing, electrical tape, or a larger bolt. \\ Ace Hardware has a pretty good selection of bronze, rubber, and neoprene bushings also. | ||
| - | * **You can try and shim the bushings** to get the bolts tight without compressing the bushing too much. ((RussW2 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005987)) \\ You might try a compression sealing washer from an Evo or other Big Twin spark plug for a shim washer to use on the mounting bolts. \\ You can stack a few of them (two, maybe three per bolt) until you get the right amount of play. \\ Then, torque the bolts to spec and not have the bars feel like they are "solid" rubber mounted. | + | * **You can try and shim the bushings** to get the bolts tight without compressing the bushing too much. ((RussW2 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/188257-handlebar-vibes-solution?t=2005987)) \\ You might try a compression sealing washer from an Evo or other Big Twin spark plug for a shim washer to use on the mounting bolts. \\ You can stack a few of them (two, maybe three per bolt) until you get the right amount of play. \\ Then, torque the bolts to spec and not have the bars feel like they are "solid" rubber mounted. |
| * The bushing shim effectively adds length of the inner sleeve. \\ The shouldered washer then goes over the shims, and you now prevent the over-compression of the rubber bushing. \\ You can torque to spec without distorting the shouldered washers. | * The bushing shim effectively adds length of the inner sleeve. \\ The shouldered washer then goes over the shims, and you now prevent the over-compression of the rubber bushing. \\ You can torque to spec without distorting the shouldered washers. | ||
| - | | Bushing shim ((photo by RussW2 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005987&page=2)) | | + | | Bushing shim ((photo by RussW2 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/188257-handlebar-vibes-solution/page2?t=2005987&page=2)) | |
| |{{:techtalk:ref:genmsr:handlebar_bushing_shim_by_russw2.jpg?direct&300|}}| | |{{:techtalk:ref:genmsr:handlebar_bushing_shim_by_russw2.jpg?direct&300|}}| | ||
| * You can also lesson some vibration in the bars by replacing the stock mounts with polyurethane bushings. | * You can also lesson some vibration in the bars by replacing the stock mounts with polyurethane bushings. | ||
| - | * This is a debatable answer however. Some have reported the poly-bushings made the vibes worse. ((Alexintenn of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005987)) | + | * This is a debatable answer however. Some have reported the poly-bushings made the vibes worse. ((Alexintenn of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/188257-handlebar-vibes-solution?t=2005987)) |
| - | | Poly bushings on an 09 1200N. ((photo by IronSportMan of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=25)) | | + | | Poly bushings on an 09 1200N. ((photo by IronSportMan of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page25?t=27701&page=25)) | |
| |{{:techtalk:ref:genmsr:poly_handlebar_bushings_by_ironsportman.jpg?direct&300|}}| | |{{:techtalk:ref:genmsr:poly_handlebar_bushings_by_ironsportman.jpg?direct&300|}}| | ||
| - | * **Adding weight in one form or another the handlebar ends**: \\ With internal weights, fill the bars with enough silicon to fully encase the weight. \\ That way, the weights touch the bars and they harmonize the vibs better. ((flathead45 of the XLFORUM http://xlforum.net/forums/showthread.php?t=107653)) | + | * **Adding weight in one form or another the handlebar ends**: \\ With internal weights, fill the bars with enough silicon to fully encase the weight. \\ That way, the weights touch the bars and they harmonize the vibs better. ((flathead45 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/42228-pennies-in-handlebars?t=107653)) |
| - | - When replacing the grips, you can tape up 2 rolls of pennies (or nickels if they'll fit) and slip one inside each handlebar end. ((Old_Goat57 of the XLFORUM http://xlforum.net/forums/showthread.php?t=45811)) | + | - When replacing the grips, you can tape up 2 rolls of pennies (or nickels if they'll fit) and slip one inside each handlebar end. ((Old_Goat57 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/27681-nickels-in-the-handlebars?t=45811)) |
| - | * Wrap the rolls in electrical tape (making a solid slug) and then a little dab of RTV on each end to glue them into place. ((Moved On of the XLFORUM http://xlforum.net/forums/showthread.php?t=45811&page=5)) | + | * Wrap the rolls in electrical tape (making a solid slug) and then a little dab of RTV on each end to glue them into place. ((Moved On of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/27681-nickels-in-the-handlebars/page5?t=45811&page=5)) |
| - | * In adding silicone in the hole, then shoving the pennies in, ((Massdog05 of the XLFORUM http://xlforum.net/forums/showthread.php?t=45811)), the silicone gives cushion between the pennies and the bar. ((Massdog05 of the XLFORUM http://xlforum.net/forums/showthread.php?t=45811&page=3)) \\ As the bar pushes forward (in the course of vibrating), the pennies try to remain still. \\ The silicone between the bar and pennies compresses and elastically collides with the pennies. \\ This lessens the momentum applied to the pennies, thus lessening the forward movement of the bar. \\ Same for the other direction ----> Equals less of the annoying vibrations. | + | * In adding silicone in the hole, then shoving the pennies in, ((Massdog05 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/27681-nickels-in-the-handlebars?t=45811)), the silicone gives cushion between the pennies and the bar. ((Massdog05 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/27681-nickels-in-the-handlebars/page3?t=45811&page=3)) \\ As the bar pushes forward (in the course of vibrating), the pennies try to remain still. \\ The silicone between the bar and pennies compresses and elastically collides with the pennies. \\ This lessens the momentum applied to the pennies, thus lessening the forward movement of the bar. \\ Same for the other direction ----> Equals less of the annoying vibrations. |
| * It should significantly reduce vibration transmitted to the grips while riding. \\ The thing that this trick does to help with the vibrations is to lower the resonant frequency of the bars so that it doesn't buzz your nerves to numbness. \\ | * It should significantly reduce vibration transmitted to the grips while riding. \\ The thing that this trick does to help with the vibrations is to lower the resonant frequency of the bars so that it doesn't buzz your nerves to numbness. \\ | ||
| - | - You can wrap the ends of two steel rods with rubber tape until they fit in the bars snugly (not tight). \\ Cover them with silicone / construction adhesive and shove them in the bars until flush. ((Mark1200 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1687153)) | + | - You can wrap the ends of two steel rods with rubber tape until they fit in the bars snugly (not tight). \\ Cover them with silicone / construction adhesive and shove them in the bars until flush. ((Mark1200 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/157642-handlebar-vibration-what-have-yall-done-to-stop-it?t=1687153)) |
| - You can buy a set of bar end weights. | - You can buy a set of bar end weights. | ||
| - | * [[http://www.barsnake.com/|Barsnake]] is a very thick rubber which is installed inside your handlebars to reduce vibration. \\ Available in solid form, or as a liquid which is poured into the bars and then solidifies. ((ron521 of the XLFORUM http://xlforum.net/forums/showthread.php?t=305328)) | + | * [[http://www.barsnake.com/|Barsnake]] is a very thick rubber which is installed inside your handlebars to reduce vibration. \\ Available in solid form, or as a liquid which is poured into the bars and then solidifies. ((ron521 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/57852-bolt-on-vibration-dampers?t=305328)) |
| ===== Horn ===== | ===== Horn ===== | ||
| **Symptom**. \\ | **Symptom**. \\ | ||
| Front cylinder noise. \\ | Front cylinder noise. \\ | ||
| - | May sound like a noisy lifter or piston slap at certain revs. ((imola461 of the XLFORUM http://xlforum.net/forums/showthread.php?t=34886)) \\ | + | May sound like a noisy lifter or piston slap at certain revs. ((imola461 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/21131-loud-front-cylinder-noise?t=34886)) \\ |
| **Condition**. \\ | **Condition**. \\ | ||
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| |{{:techtalk:ref:svcproc:rubber_mount_for_fuel_tank_by_ironmick.jpg?direct&300|}}| | |{{:techtalk:ref:svcproc:rubber_mount_for_fuel_tank_by_ironmick.jpg?direct&300|}}| | ||
| - | Another source of fuel tank noise is a gas cap that doesn't fit tightly. ((83XLX of the XLFORUM http://xlforum.net/forums/showthread.php?t=832376 )) \\ | + | Another source of fuel tank noise is a gas cap that doesn't fit tightly. ((83XLX of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/98047-ironhead-noise#post2036154)) \\ |
| You can also push on the tank or the cap while riding to check for noise. \\ | You can also push on the tank or the cap while riding to check for noise. \\ | ||
| Also, the tank itself will amplify the normal racket when it's near empty, even though it and the cap are tight. \\ | Also, the tank itself will amplify the normal racket when it's near empty, even though it and the cap are tight. \\ | ||
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| ===== Oil Tank ===== | ===== Oil Tank ===== | ||
| - | |||
| **Symptom**: \\ | **Symptom**: \\ | ||
| Rattling noise on the right side of the bike. \\ | Rattling noise on the right side of the bike. \\ | ||
| **Condition**: \\ | **Condition**: \\ | ||
| - | Loose oil tank cover. ((screndname of the XLFORUM http://xlforum.net/forums/showthread.php?p=5740152#post5740152)) \\ | + | Loose oil tank cover. ((screndname of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/196416-what%C2%92s-that-sound/page3#post4287421)) \\ |
| + | You can glue a piece of rubber to the inside of the cover. \\ | ||
| - | You can glue a piece of rubber to the inside of the cover. \\ | ||
| ====== Noises From Loose Objects ====== | ====== Noises From Loose Objects ====== | ||
