Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
techtalk:evo:susp01 [2021/02/07 06:00]
hippysmack [Fork Oil Drain Screws]
techtalk:evo:susp01 [2024/03/26 04:14] (current)
ixl2relax [1986-2003 Forks (Except 1200S)]
Line 2: Line 2:
 ====== EVO: Suspension ====== ====== EVO: Suspension ======
  
 +
 +Check the REFerence Section for additional Suspension information:​\\
 +[[techtalk:​ref:​tools010#​suspension|Suspension Tools]]
  
 ===== Sub-Documents ===== ===== Sub-Documents =====
Line 35: Line 38:
 {{:​techtalk:​evo:​susp:​1994-std-fork-parts-01.jpg?​600|}}((Photo by IXL2Relax at the XLForum)) {{:​techtalk:​evo:​susp:​1994-std-fork-parts-01.jpg?​600|}}((Photo by IXL2Relax at the XLForum))
  
-{{  :​techtalk:​evo:​susp:​dampertube-comparison_seraphan6.jpg?​200|Image by seraphan6 ​XLForum Threadid=1085901}}+{{  :​techtalk:​evo:​susp:​dampertube-comparison_seraphan6.jpg?​200|Image by seraphan6 ​https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​113966-ricor-mods-on-nightster?​t=1085901}}
 Here's a comparison between a couple damper tube sets. Notice they are of different lengths and that the holes at the bottom are different sizes. The actual length & size of holes varies by the model in which it is intended to be used. Here's a comparison between a couple damper tube sets. Notice they are of different lengths and that the holes at the bottom are different sizes. The actual length & size of holes varies by the model in which it is intended to be used.
  
Line 48: Line 51:
 **TIPS** **TIPS**
  
-The 39mm Fork Caps (which are 6-pointed) need a 1-3/​8"​(1.375"​) 6-point socket or Cap Wrench. A usable equivalent is a 35mm(1.378"​) size. It's a good idea to wrap masking tape, electrical tape or duct tape (depending on the thickness of the tape) around the chrome cap to protect if from marks. ((See this XLForum Thread: ​http://​xlforum.net/​forums/showthread.php?t=675643))+The 39mm Fork Caps (which are 6-pointed) need a 1-3/​8"​(1.375"​) 6-point socket or Cap Wrench. A usable equivalent is a 35mm(1.378"​) size. It's a good idea to wrap masking tape, electrical tape or duct tape (depending on the thickness of the tape) around the chrome cap to protect if from marks. ((See this XLForum Thread: ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​86709-fork-cap-socket-size?t=675643))
  
 Use a 6-point socket, rather than a 12-point version, to lessen the chance of rounding the points on the cap. This is also why an adjustable wrench should be avoided. Use a 6-point socket, rather than a 12-point version, to lessen the chance of rounding the points on the cap. This is also why an adjustable wrench should be avoided.
Line 67: Line 70:
     * (Use a JIS screwdriver for JIS screws. JIS screws look like Philips screws with a dot in the center of the head, but the JIS version is a wider blade with different spline angles. Using a Philips screwdriver on a JIS screw will often round out the screw head. However, using a JIS screwdriver on a Philips-head screw may work just fine, since the driver splines fit snugly on the upper, heavier part of the screw head.)     * (Use a JIS screwdriver for JIS screws. JIS screws look like Philips screws with a dot in the center of the head, but the JIS version is a wider blade with different spline angles. Using a Philips screwdriver on a JIS screw will often round out the screw head. However, using a JIS screwdriver on a Philips-head screw may work just fine, since the driver splines fit snugly on the upper, heavier part of the screw head.)
  
-45815-03 - Chrome Fork Slider Drain Screw Kit ((Folkie of the XLFORUM xlforum.net/​forums/showthread.php?​t=738626))\\+45815-03 - Chrome Fork Slider Drain Screw Kit ((Folkie of the XLFORUM ​https://​www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​90919-size-tpi-of-fork-drain-screw?​t=738626))\\
 Screw size is M4 (0.7mm) × 6mm - Includes a pair of chrome allen head drain screws and washers - Uses 2.5mm allen key. \\ Screw size is M4 (0.7mm) × 6mm - Includes a pair of chrome allen head drain screws and washers - Uses 2.5mm allen key. \\
 (Try a 3mm allen key first, the chroming takes up some space in the hex slot) \\ (Try a 3mm allen key first, the chroming takes up some space in the hex slot) \\
Line 74: Line 77:
 These are stainless steel bought from a hardware store. Size M4 (0.7mm) × 8mm. \\ These are stainless steel bought from a hardware store. Size M4 (0.7mm) × 8mm. \\
  
-{{:​techtalk:​evo:​susp:​fork_drain_screw_upgrade_pic1_by_luxblue.jpg?​direct&​400|}} ((photo by LuxBlue of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1056600)) {{:​techtalk:​evo:​susp:​fork_drain_screw_upgrade_pic2_by_luxblue.jpg?​direct&​400|}} ((photo by LuxBlue of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1056600)) \\+{{:​techtalk:​evo:​susp:​fork_drain_screw_upgrade_pic1_by_luxblue.jpg?​direct&​400|}} ((photo by LuxBlue of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​111884-never-strip-a-fork-drain-screw-again?​t=1056600)) {{:​techtalk:​evo:​susp:​fork_drain_screw_upgrade_pic2_by_luxblue.jpg?​direct&​400|}} ((photo by LuxBlue of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​111884-never-strip-a-fork-drain-screw-again?​t=1056600)) \\
  
 \\ \\
Line 121: Line 124:
 | |Slider Tube|45395-97|23.375"​ |45395-92|24.25"​| | |Slider Tube|45395-97|23.375"​ |45395-92|24.25"​|
 |:::|Damper Tube|45925-97|9.0"​|45938-92|7.5"​| |:::|Damper Tube|45925-97|9.0"​|45938-92|7.5"​|
-|:::​|Spring-#​Coils|45376-97| |45372-92|21.5"​_47coils|+|:::​|Spring-#​Coils|45376-97|20.5"​_DR|45372-92|21.5"​_47coils|
 |   ​| ​  ​| ​  ​| ​  ​| ​  ​| ​  | |   ​| ​  ​| ​  ​| ​  ​| ​  ​| ​  |
 ^1998|Models >>​^Std|Length^Hug&​Ctm|Length| ^1998|Models >>​^Std|Length^Hug&​Ctm|Length|
 | |Slider Tube|45395-97|23.375"​ |45395-92|24.25"​| | |Slider Tube|45395-97|23.375"​ |45395-92|24.25"​|
 |:::|Damper Tube|45925-97|9.0"​|45938-92|7.5"​| |:::|Damper Tube|45925-97|9.0"​|45938-92|7.5"​|
-|:::​|Spring-#​Coils|45376-97| |45372-92|21.5"​_47coils|+|:::​|Spring-#​Coils|45376-97|20.5"​_DR|45372-92|21.5"​_47coils|
 |   ​| ​  ​| ​  ​| ​  ​| ​  ​| ​  | |   ​| ​  ​| ​  ​| ​  ​| ​  ​| ​  |
 ^1999-2003|Models >>​^Std&​Ctm|Length^Hugger|Length| ^1999-2003|Models >>​^Std&​Ctm|Length^Hugger|Length|
 | |Slider Tube|45395-97|23.375"​|45395-92|24.25"​| | |Slider Tube|45395-97|23.375"​|45395-92|24.25"​|
 |:::|Damper Tube|45925-97|9.0"​|45938-92|7.5"​| |:::|Damper Tube|45925-97|9.0"​|45938-92|7.5"​|
-|:::​|Spring-#​Coils|45376-97| |45372-92|21.5"​_47coils|+|:::​|Spring-#​Coils|45376-97|20.5"​_DR|45372-92|21.5"​_47coils|
 ^2002-2003|Models >>​^883R|Length| ​  || ^2002-2003|Models >>​^883R|Length| ​  ||
 | |Slider Tube|45395-97|23.375"​| ​  || | |Slider Tube|45395-97|23.375"​| ​  ||
 |:::|Damper Tube|45925-97|9.0"​| ​  || |:::|Damper Tube|45925-97|9.0"​| ​  ||
-|:::​|Spring-#​Coils|45376-97| |   ||+|:::​|Spring-#​Coils|45376-97|20.5"​_DR|   ||
  
  
Line 147: Line 150:
 \\ \\
  
-Spring Rates:\\ +Spring ​Notes/Rates:\\ 
-45372-92 - 21.5" - 47coils - Rate reported as 40#/in ((by sebasbecu at xlforum.net/​forums/showthread.php?​t=2072495)) +45372-92 - 21.5" - 47coils - Rate reported as 40#/in ((by sebasbecu at https://​www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​196038-fork-spring-rate-measurments-sag-and-more?​t=2072495)) 
 +45376-97 - 20.5"​_DR - These are dual-rate springs while most of the other fork springs are single-rate
  
  
Line 177: Line 180:
 ===== Draining 1200S Forks ===== ===== Draining 1200S Forks =====
  
-  * 1200S sliders don't have drain plugs. So, here is one way of doing so. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * 1200S sliders don't have drain plugs. So, here is one way of doing so. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * Basically, once you have the forks out of the bike, remove the large top nut (loosen it slightly while you have the forks clamped in the lower triple tree, (as shown here [[techtalk:​evo:​susp01d#​part_4dismantle_the_forks|Part 4 Dismantle the Forks]] ) while holding the slider. There is no spring pressure on this nut, so it's easy. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * Basically, once you have the forks out of the bike, remove the large top nut (loosen it slightly while you have the forks clamped in the lower triple tree, (as shown here [[techtalk:​evo:​susp01d#​part_4dismantle_the_forks|Part 4 Dismantle the Forks]] ) while holding the slider. There is no spring pressure on this nut, so it's easy. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * The slider will drop away, but don't let it drop more than a couple of inches or you'll have oil pouring out and not know how much has come out. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * The slider will drop away, but don't let it drop more than a couple of inches or you'll have oil pouring out and not know how much has come out. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * Carefully tip the fork upside-down and pour the oil into a clear measuring container (a wide funnel will help you to not lose any). ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * Carefully tip the fork upside-down and pour the oil into a clear measuring container (a wide funnel will help you to not lose any). ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * Bring the fork upright and pull the slider to the very top again, pump the fork a few times to empty the damper tube, then turn it upside-down again and pour more oil into your measuring container. Repeat this a couple more times to get as much of the old oil out as possible. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * Bring the fork upright and pull the slider to the very top again, pump the fork a few times to empty the damper tube, then turn it upside-down again and pour more oil into your measuring container. Repeat this a couple more times to get as much of the old oil out as possible. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * Check how much oil came out of the fork, make a note of it, then pour the old oil into a waste container. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * Check how much oil came out of the fork, make a note of it, then pour the old oil into a waste container. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * Measure the same quantity of fresh oil into the measuring container, then, with the slider still close to the top of its stroke, carefully pour the oil into it. You're pouring the oil between the coils of the spring, so you need to go slowly and keep the fork vertical to avoid losing any. If you can get your hands on a funnel and fit a narrow flexible hose to the end of it, it may make things easier. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * Measure the same quantity of fresh oil into the measuring container, then, with the slider still close to the top of its stroke, carefully pour the oil into it. You're pouring the oil between the coils of the spring, so you need to go slowly and keep the fork vertical to avoid losing any. If you can get your hands on a funnel and fit a narrow flexible hose to the end of it, it may make things easier. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * When all the fresh oil is in, thread the slider onto the top nut again; clamp the fork into the bottom triple tree only to hold it steady while you fully tighten the top nut; then push the fork all the way to the top again and clamp it in place. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6)) +  * When all the fresh oil is in, thread the slider onto the top nut again; clamp the fork into the bottom triple tree only to hold it steady while you fully tighten the top nut; then push the fork all the way to the top again and clamp it in place. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6)) 
-  * Repeat on the other fork. ((steelworker ​http://​xlforum.net/​forums/showthread.php?​t=744608&​page=6))+  * Repeat on the other fork. ((steelworker ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​91392-1200s-fork-rebuild-hyperpro-spring-fitment-with-photo-goodness/​page6?​t=744608&​page=6))
  
  
Line 198: Line 201:
 ====== 2004-later Forks ====== ====== 2004-later Forks ======
  
-  * Be careful, with the Low bikes, taking out the shock caps. There is about 2 1/2 " of spring preload so the cap wants to come out in a hurry. I am about 200 lbs and fairly strong and it was about all I could do to reinstall the caps with a 1 3/8 socket on a 6" extension on a ratchet. ((whittlebeast ​http://​xlforum.net/​forums/showthread.php?​t=47542&​highlight=1200s+shocks&​page=5))+  * Be careful, with the Low bikes, taking out the shock caps. There is about 2 1/2 " of spring preload so the cap wants to come out in a hurry. I am about 200 lbs and fairly strong and it was about all I could do to reinstall the caps with a 1 3/8 socket on a 6" extension on a ratchet. ((whittlebeast ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​28685-harley-database-of-springs-and-shocks/​page5?​t=47542&​highlight=1200s+shocks&​page=5))
  
  
Line 221: Line 224:
 ^ 2013-2015 | 1200V (72) |45395-09|45925-09|45500142|DT=7.5"​ - 45925-09 | ^ 2013-2015 | 1200V (72) |45395-09|45925-09|45500142|DT=7.5"​ - 45925-09 |
 ^ 2014-2015 | 883N |46218-05|47313-07|45500139|DT=7.0"​ - 47313-07 w/ 2-holes 8.92mm | ^ 2014-2015 | 883N |46218-05|47313-07|45500139|DT=7.0"​ - 47313-07 w/ 2-holes 8.92mm |
-^ 2014-2018 | 1200T |45395-09|45458-09|45500244|DT=7.5"​ - 45458-09((xlforum.net/​forums/showthread.php?​t=1863121)) |+^ 2014-2018 | 1200T |45395-09|45458-09|45500244|DT=7.5"​ - 45458-09((https://​www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​173599-2014-xl1200t-suspension?​t=1863121)) |
  
-(Measurements for this section contributed by XLForum ​members)+(Measurements for this section contributed by XLForum ​member, including this thread: https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​191729-hd-part-numbers?​t=2045589)
  
 ===== Mixed-Tech Forks ===== ===== Mixed-Tech Forks =====
Line 241: Line 244:
 \\ \\
 Here's a thread by '​Tomcatt'​ of the XLForum regarding changing to aftermarket springs & changing the oil viscosity/​level in these mixed-tech forks:\\ Here's a thread by '​Tomcatt'​ of the XLForum regarding changing to aftermarket springs & changing the oil viscosity/​level in these mixed-tech forks:\\
-http://​xlforum.net/​forums/showthread.php?t=2073068+https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​196520-2016-one-cartridge-forks?t=2073068
  
 \\ \\
Line 292: Line 295:
  
 Reference Additional Information on the 2004+ models in these XLForum Threads:\\ Reference Additional Information on the 2004+ models in these XLForum Threads:\\
-http://​xlforum.net/​forums/showpost.php?​p=3265511\\ +https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​113966-ricor-mods-on-nightster/​page2#​post2432666\\ 
-http://​xlforum.net/​forums/showthread.php?​t=1827354\\ +https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​170361-installing-works-performance-fork-springs-in-a-2014-xl1200-c?​t=1827354\\ 
-http://​xlforum.net/​forums/showthread.php?​t=1085901\\ +https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​113966-ricor-mods-on-nightster?​t=1085901\\ 
-http://​xlforum.net/​forums/showthread.php?​t=1971682\\+https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​183137-wrong-damper-tubes?​t=1971682\\