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techtalk:ref:priclutch01 [2020/05/27 05:40] hippysmack [Broken Rotor / Clutch Basket Magnets] |
techtalk:ref:priclutch01 [2024/01/19 15:32] hippysmack |
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| ====== REF: Primary Drive & Clutch ====== | ====== REF: Primary Drive & Clutch ====== | ||
| ====== Broken Rotor / Clutch Basket Magnets ====== | ====== Broken Rotor / Clutch Basket Magnets ====== | ||
| - | If you look on the rotor of your late Ironhead to present Evo you'll see a warning. It says "Caution No Sharp Blows". ((Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) | ||
| - | |This is what can happen when you use a hammer on the clutch basket / engine sprocket rotor \\ (respectively to your year model) ((photo by Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair))|| | + | |
| + | If you look on the rotor of your late Ironhead to present Evo you'll see a warning. It says "Caution No Sharp Blows". ((Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) | ||
| + | |||
| + | |This is what can happen when you use a hammer on the clutch basket / engine sprocket rotor \\ (respectively to your year model) ((photo by Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair))|| | ||
| |{{:techtalk:ref:priclutch:broken_stator_magnets_1_by_vanmor.jpg?direct&300|}}|{{:techtalk:ref:priclutch:broken_stator_magnets_2_by_vanmor.jpg?direct&300|}}| | |{{:techtalk:ref:priclutch:broken_stator_magnets_1_by_vanmor.jpg?direct&300|}}|{{:techtalk:ref:priclutch:broken_stator_magnets_2_by_vanmor.jpg?direct&300|}}| | ||
| - | This was done on purpose as an illustration. "I started slow and then went a little harder until I heard a couple of the magnets drop out". \\ As you can see, two of the magnets broke and then fell out. The surface of the magnet that was glued stayed in contact with the rotor. \\ Actually the two broken magnets shattered. They're ceramic and will break like glass.((Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) | + | This was done on purpose as an illustration. "I started slow and then went a little harder until I heard a couple of the magnets drop out". \\ As you can see, two of the magnets broke and then fell out. The surface of the magnet that was glued stayed in contact with the rotor. \\ Actually the two broken magnets shattered. They're ceramic and will break like glass.((Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) |
| ===== Sourcing Replacement Magnets ===== | ===== Sourcing Replacement Magnets ===== | ||
| - | * There doesn't seem to be a source for new replacement magnets. ((Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) | + | * There doesn't seem to be a source for new replacement magnets. ((Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) |
| * You can check with your local HD to see if they may have a used take-off with donor magnets in the service dept. (that they haven't thrown out yet). | * You can check with your local HD to see if they may have a used take-off with donor magnets in the service dept. (that they haven't thrown out yet). | ||
| - | * A good source for replacement donor magnets is a Big Twin six magnet rotor (preferably used), add your best source of heat to remove its magnets. ((Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair&page=2)) | + | * A good source for replacement donor magnets is a Big Twin six magnet rotor (preferably used), add your best source of heat to remove its magnets. ((Vanmor 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/155506-replacement-clutch-rotor-magnets/page2?t=1666986&highlight=stator+repair&page=2)) |
| * DO NOT use a hammer to knock them loose. You might get lucky but it's likely the magnets will break before letting go of the hub. | * DO NOT use a hammer to knock them loose. You might get lucky but it's likely the magnets will break before letting go of the hub. | ||
| - | ===== Repairing the Magnets in the Hub ===== | + | ===== All Models - Replacing the Magnets ===== |
| - | ==== Removing the Magnets ==== | + | |
| + | ==== Removing the Magnets from the Rotor ==== | ||
| **Caution.... Use eye and skin protection before attempting to remove them.** | **Caution.... Use eye and skin protection before attempting to remove them.** | ||
| Line 22: | Line 25: | ||
| **Using Solvent**: \\ | **Using Solvent**: \\ | ||
| - | * The MoCo uses a very thin adhesive that may be resistant to paint stripper. ((Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) | + | * The MoCo uses a very thin adhesive that may be resistant to paint stripper. ((Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) |
| * The idea, however, is that it will soften the epoxy holding the magnets on. | * The idea, however, is that it will soften the epoxy holding the magnets on. | ||
| * It may take several applications, but eventually it will soften the adhesive enough to allow the application of heat. | * It may take several applications, but eventually it will soften the adhesive enough to allow the application of heat. | ||
| Line 36: | Line 39: | ||
| |{{:techtalk:ref:priclutch:removing_rotor_magnets_3_by_vanmor.jpg?direct&300|}}| | |{{:techtalk:ref:priclutch:removing_rotor_magnets_3_by_vanmor.jpg?direct&300|}}| | ||
| - | | It takes awhile but eventually the heat does it's job. ((photo by Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) | | + | | It takes awhile but eventually the heat does it's job. ((photo by Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) | |
| - | * A heat gun has been used successfully on the outside of the hub ((juzyHD of the XLFORUM http://xlforum.net/forums/showthread.php?t=2000061&highlight=splines+hub)) adjacent to each magnet removed. | + | * A heat gun has been used successfully on the outside of the hub ((juzyHD of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187218-late-84-magnet-removal-and-attachment?t=2000061&highlight=splines+hub)) adjacent to each magnet removed. |
| - | * A torch (propane or whatever) should work better and faster. However, don't get it too hot or the magnet and the properties thereof could be ruined. \\ Use a big screwdriver or small pry bar to LIGHTLY PRY the magnets loose or you will break them. TAKE YOUR TIME !!! ((Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) | + | * A torch (propane or whatever) should work better and faster. However, don't get it too hot or the magnet and the properties thereof could be ruined. \\ Use a big screwdriver or small pry bar to LIGHTLY PRY the magnets loose or you will break them. TAKE YOUR TIME !!! ((Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) |
| - | * You can put it in an oven at 400*, you want to heat it evenly as spot heating can cause distortion. The magnets are brittle so be careful. ((bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=2000061&highlight=splines+hub&page=2)) | + | * You can put it in an oven at 400*, you want to heat it evenly as spot heating can cause distortion. The magnets are brittle so be careful. ((bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187218-late-84-magnet-removal-and-attachment/page2?t=2000061&highlight=splines+hub&page=2)) |
| - | * This one was set inside a charcoal grill with charcoal laid in a circle around it. The best way to do this is wait until the rotor has turned color completely. \\ Then work quickly but carefully. Once the rotor reaches temperature, it begines to turn color rather quickly.((Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) \\ (Note: Best to place the charcoal all the way around the rotor so as not to warp it with different temps applied.) | + | * This one was set inside a charcoal grill with charcoal laid in a circle around it. The best way to do this is wait until the rotor has turned color completely. \\ Then work quickly but carefully. Once the rotor reaches temperature, it begines to turn color rather quickly.((Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) \\ (Note: Best to place the charcoal all the way around the rotor so as not to warp it with different temps applied.) |
| |{{:techtalk:ref:priclutch:removing_rotor_magnets_1_by_vanmor.jpg?direct&300|}}|{{:techtalk:ref:priclutch:removing_rotor_magnets_2_by_vanmor.jpg?direct&300|}}| | |{{:techtalk:ref:priclutch:removing_rotor_magnets_1_by_vanmor.jpg?direct&300|}}|{{:techtalk:ref:priclutch:removing_rotor_magnets_2_by_vanmor.jpg?direct&300|}}| | ||
| - | | Removing magnets in the charcoal grill ((photos by Vanmor of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666986&highlight=stator+repair)) || | + | | Removing magnets in the charcoal grill ((photos by Vanmor 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/155506-replacement-clutch-rotor-magnets?t=1666986&highlight=stator+repair)) || |
| ==== Installing the Magnets ==== | ==== Installing the Magnets ==== | ||
| Line 65: | Line 68: | ||
| | Correct magnet pole positioning ((Drawing by juzyHD of the XLFORUM (cropped by Hippysmack) http://xlforum.net/forums/showthread.php?t=1958787)) | | | Correct magnet pole positioning ((Drawing by juzyHD of the XLFORUM (cropped by Hippysmack) http://xlforum.net/forums/showthread.php?t=1958787)) | | ||
| - | ==== (L84-90 models) ==== | + | ===== L84-90 Models ===== |
| - | * With a used clutch housing with good magnets, take all the magnets out first and re-glue them with epoxy (Loctite 3455 used in the pics below). | + | * Most of the above procedure applies to these models as well. In this case, the rotor is part of the Clutch assembly, therefore, the magnets are inside that housing. |
| + | * On a used clutch housing with good magnets, take all the magnets out and re-glue them with epoxy (Loctite 3455 used in the pics below). | ||
| |{{:techtalk:ref:priclutch:clutch_shell_magnet_fix_1_by_harton.jpg?direct&300|}} ((Photo by harton of the XLFORUM http://xlforum.net/forums/showthread.php?t=1678442))|{{:techtalk:ref:priclutch:clutch_shell_magnet_fix_2_by_harton.jpg?direct&300|}} ((Photo by harton of the XLFORUM http://xlforum.net/forums/showthread.php?t=1678442))| | |{{:techtalk:ref:priclutch:clutch_shell_magnet_fix_1_by_harton.jpg?direct&300|}} ((Photo by harton of the XLFORUM http://xlforum.net/forums/showthread.php?t=1678442))|{{:techtalk:ref:priclutch:clutch_shell_magnet_fix_2_by_harton.jpg?direct&300|}} ((Photo by harton of the XLFORUM http://xlforum.net/forums/showthread.php?t=1678442))| | ||
| + | |||
| + | \\ | ||
| ====== The Dreaded Clutch Basket Wobble (L84-90 models) ====== | ====== The Dreaded Clutch Basket Wobble (L84-90 models) ====== | ||
