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techtalk:evo:transfinal02 [2017/05/10 04:26] hippysmack [1986-1990 4-Speed Constant Mesh Wet Clutch Transmission w/Trapdoor] |
techtalk:evo:transfinal02 [2024/01/09 02:00] (current) hippysmack |
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| [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
| ====== EVO: Transmission & Final Drive ====== | ====== EVO: Transmission & Final Drive ====== | ||
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| + | ^Click here for tips on [[techtalk:ref:svcproc10#speed_transmission_removal_inspection_installation|4 Speed Transmission Removal / Inspection / Installation]]^ | ||
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| |{{:techtalk:evo:transfinal:1990_4_speed_1_by_dave76.jpg?direct&300|}}|{{:techtalk:evo:transfinal:1990_4_speed_2_by_dave76.jpg?direct&300|}}|{{:techtalk:evo:transfinal:1990_4_speed_3_by_dave76.jpg?direct&300|}}| | |{{:techtalk:evo:transfinal:1990_4_speed_1_by_dave76.jpg?direct&300|}}|{{:techtalk:evo:transfinal:1990_4_speed_2_by_dave76.jpg?direct&300|}}|{{:techtalk:evo:transfinal:1990_4_speed_3_by_dave76.jpg?direct&300|}}| | ||
| - | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM http://xlforum.net/vbportal/forums/showthread.php?t=513989&highlight=speed )) ||| | + | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-transmission-clutch-primary-secondary-drive/73714-4-speed-info?t=513989&highlight=speed)) ||| |
| - | |{{:techtalk:evo:transfinal:1990_4_speed_4_by_dave76.jpg?direct&300|}}|{{:techtalk:evo:transfinal:1990_4_speed_5_by_dave76.jpg?direct&300|}}| | + | |{{:techtalk:evo:transfinal:1990_4_speed_4_by_dave76.jpg?direct&300|}}|{{:techtalk:evo:transfinal:1990_4_speed_5_by_dave76.jpg?direct&300|}}|{{:techtalk:evo:transfinal:88_4_speed_by_wi_duker.jpg?direct&300|}}| |
| - | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM http://xlforum.net/vbportal/forums/showthread.php?t=513989&highlight=speed)) || | + | | 1990 4 Speed Transmission ((photos by Dave 76 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-transmission-clutch-primary-secondary-drive/73714-4-speed-info?t=513989&highlight=speed)) || 1988 4 Speed by WI_duker)) | |
| ====== Specifications ====== | ====== Specifications ====== | ||
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| |Spring Force|Engaged: 304 lbs|Disengaged: 260 lbs| | |Spring Force|Engaged: 304 lbs|Disengaged: 260 lbs| | ||
| |Clutch shell bearing on clutch gear (loose)|0.0000 in-0.0010 in. / (0.0254 mm)| | |Clutch shell bearing on clutch gear (loose)|0.0000 in-0.0010 in. / (0.0254 mm)| | ||
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| ===== Primary Drive (engine to transmission) ===== | ===== Primary Drive (engine to transmission) ===== | ||
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| |The MoCo publishes for 1986-1990 ((1986-1990 HD Sportster FSM pg 2-1))|1.5 pints (24 oz), (710 ml)| | |The MoCo publishes for 1986-1990 ((1986-1990 HD Sportster FSM pg 2-1))|1.5 pints (24 oz), (710 ml)| | ||
| * This quantity is for a dry application. When changing oil, use your own judgement not to overfill as you won't need a full 1.5 pints to re-fill the oil. | * This quantity is for a dry application. When changing oil, use your own judgement not to overfill as you won't need a full 1.5 pints to re-fill the oil. | ||
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| ===== Transmission ===== | ===== Transmission ===== | ||
| * Internal Gear Ratios are the number of clutch gear revolutions to drive the mainshaft sprocket one revolution. | * Internal Gear Ratios are the number of clutch gear revolutions to drive the mainshaft sprocket one revolution. | ||
| * Overall Gear Ratios are the number of engine revolutions to drive rear wheel one revolution. | * Overall Gear Ratios are the number of engine revolutions to drive rear wheel one revolution. | ||
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| ^Year (all models) Internal Gear Ratios^^^^^ | ^Year (all models) Internal Gear Ratios^^^^^ | ||
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| |1987-1990|9.12|6.59|4.98|3.97| | |1987-1990|9.12|6.59|4.98|3.97| | ||
| + | ===== Clutch Gear Mainshaft Ball Bearing ===== | ||
| - | + | 1986-1990 Mainshaft Ball Bearing - Used on All Models ((86-90 HD Sportster Parts Catalog)) | |
| - | + | * 9025A - Ball Bearing | |
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| ===== Final Drive (Trans to Wheel) ===== | ===== Final Drive (Trans to Wheel) ===== | ||
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| ^Year^Domestic Model(s)^Transmission Sprocket^Rear Wheel Sprocket^Ratio^ | ^Year^Domestic Model(s)^Transmission Sprocket^Rear Wheel Sprocket^Ratio^ | ||
| |1986-1990|All Models((1986-1990 HD Sportster FSM pg 6-1))|21 Teeth|48 Teeth|2.29:1| | |1986-1990|All Models((1986-1990 HD Sportster FSM pg 6-1))|21 Teeth|48 Teeth|2.29:1| | ||
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| ===== Fastener Torque Specs ===== | ===== Fastener Torque Specs ===== | ||
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| |Mainshaft nut locking screw|50 - 60 in-lbs.| | |Mainshaft nut locking screw|50 - 60 in-lbs.| | ||
| |Mainshaft nut|35 - 65 ft-lbs.| | |Mainshaft nut|35 - 65 ft-lbs.| | ||
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| * Mainshaft fourth gear and second gear: .040 min. - .080 in. max. | * Mainshaft fourth gear and second gear: .040 min. - .080 in. max. | ||
| * Mainshaft third gear and second gear: .040 min. - .080 in. max. | * Mainshaft third gear and second gear: .040 min. - .080 in. max. | ||
| - | ===== Countershaft Group ===== | ||
| + | ===== Countershaft Group ===== | ||
| * Countershaft end bearings: Retained needle roller bearings | * Countershaft end bearings: Retained needle roller bearings | ||
| * Countershaft needle bearing journal diameter: | * Countershaft needle bearing journal diameter: | ||
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| * Countershaft second gear and third gear: .040 - .080 in. max. | * Countershaft second gear and third gear: .040 - .080 in. max. | ||
| * Countershaft end play: .004 - .015 in. max. | * Countershaft end play: .004 - .015 in. max. | ||
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| + | ==== Countershaft Low Gear Changes ==== | ||
| + | ^Countershaft Low Gear -17T^Change Year^Model(s)^Notes^ | ||
| + | |35760-84A \\ Late 1984-1990 ((1979-1985 HD Sportster Parts Catalog pg 51)) ((1986-1990 HD Sportster Parts Catalog pg 37))|Late 1984| | ||
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| ===== Discussion ===== | ===== Discussion ===== | ||
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| 1986-90 Evo Sportsters: What every owner should know but were afraid to ask\\ | 1986-90 Evo Sportsters: What every owner should know but were afraid to ask\\ | ||
| - | An [[http://xlforum.net/vbportal/forums/showthread.php?t=1971026|__XLForum Thread__]] By Four Speed\\ | + | An [[https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/183021-1986-90-evo-sportsters-what-every-owner-should-know-but-were-afraid-to-ask?t=1971026|__XLForum Thread__]] By Four Speed\\ |
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