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techtalk:ref:engmech07g [2020/10/15 04:19] hippysmack [Breather Gear Timing Events] |
techtalk:ref:engmech07g [2020/10/23 20:08] hippysmack [Comparing Amount of Vacuum Created] |
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| |52/71 breather opens 25 deg after TDC front cyl and closes at BDC front cylinder ((thefrenchowl of the XLFORUM http://xlforum.net/forums/showthread.php?p=5853609#post5853609)) | |52/71 breather opens 25 deg after TDC front cyl and closes at BDC front cylinder ((thefrenchowl of the XLFORUM http://xlforum.net/forums/showthread.php?p=5853609#post5853609)) | ||
| - | ====== Breather Gear Timing Events ====== | + | ====== Breather Gear Pics ====== |
| - | This drawing shows the timing events of the 57-71 timed breather gear for 1 crank revolution for the front cylinder. \\ | + | 1957 to 1976 Sportster production pump breathers: \\ |
| - | {{:techtalk:ref:engmech:AAA1957-1971_sportster_timed_breather_cycle_by_hippysmack.png?direct&600|}} ((drawing by Hippysmack)) \\ | + | |Breather Gears ((photos by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=3272806&postcount=204)) |Some of amf's signature quality control. \\ These are 3 - 72 breather gears.((photos by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=3272806&postcount=204))|A closer view((photos by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=3272806&postcount=204))| |
| - | \\ | + | |{{:techtalk:ih:oil:breather_gears_by_dr_dick.jpg?direct&300|}}|{{:techtalk:ih:oil:breather_gears_2_by_dr_dick.jpg?direct&300|}}|{{:techtalk:ih:oil:breather_gears_3_by_dr_dick.jpg?direct&300|}}| |
| - | This one shows how the pressures change in the crankcase per 1 revolution. \\ | + | |Left is the unmodified 1/4 speed R \\ valve. Right is the 1000 stock.|R model is the left one.| |
| + | |{{:techtalk:ih:engmech:cc_flow_4_by_dr_dick.jpg?direct&200|}}|{{:techtalk:ih:engmech:cc_flow_5_by_dr_dick.jpg?direct&300|}}| | ||
| - | {{:techtalk:ref:engmech:AAA1957-1971_sportster_crankcase_pressure_cycle_by_hippysmack.png?direct&600|}} ((drawing by Hippysmack)) \\ | + | ====== Breather Gear Timing Events ====== |
| + | |||
| + | ===== Timing events for 1 crank rev ===== | ||
| + | {{:techtalk:ref:engmech:1957-1971_sportster_timed_breather_cycle_by_hippysmack.png?direct&600|}} ((drawing by Hippysmack)) \\ | ||
| \\ | \\ | ||
| + | |Timing events of the 72-76 timed breather gear for 1 crank revolution for the front cylinder. \\ | ||
| - | ====== Breather Gear Pics ====== | + | ===== Pressures changes in the crankcase for 1 rev ===== |
| - | 1957 to 1976 Sportster production pump breathers: \\ | + | {{:techtalk:ref:engmech:1957-1971_sportster_crankcase_pressure_cycle_by_hippysmack.png?direct&600|}} ((drawing by Hippysmack)) \\ |
| - | |Breather Gears ((photos by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=3272806&postcount=204)) |Some of amf's signature quality control. \\ These are 3 - 72 breather gears.((photos by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=3272806&postcount=204))|A closer view((photos by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=3272806&postcount=204))| | + | {{:techtalk:ref:engmech:1972-1976_sportster_crankcase_pressure_cycle_by_hippysmack.png?direct&600|}} ((drawing by Hippysmack)) \\ |
| - | |{{:techtalk:ih:oil:breather_gears_by_dr_dick.jpg?direct&300|}}|{{:techtalk:ih:oil:breather_gears_2_by_dr_dick.jpg?direct&300|}}|{{:techtalk:ih:oil:breather_gears_3_by_dr_dick.jpg?direct&300|}}| | + | |
| - | |Left is the unmodified 1/4 speed R \\ valve. Right is the 1000 stock.|R model is the left one.| | + | {{:techtalk:ref:engmech:1977-present_sportster_crankcase_pressure_cycle_by_hippysmack.png?direct&600|}} ((drawing by Hippysmack)) \\ |
| - | |{{:techtalk:ih:engmech:cc_flow_4_by_dr_dick.jpg?direct&200|}}|{{:techtalk:ih:engmech:cc_flow_5_by_dr_dick.jpg?direct&300|}}| | + | |
| + | ===== Comparing Amount of Vacuum Created ===== | ||
| + | |||
| + | {{:techtalk:ref:engmech:1957-1976_sportster_crankcase_vacuum_comparison_by_hippysmack.png?direct&400|}} ((drawing by Hippysmack)) \\ | ||
| + | |||
| + | {{:techtalk:ref:engmech:1972-1985_sportster_crankcase_vacuum_comparison_by_hippysmack.png?direct&400|}} ((drawing by Hippysmack)) \\ | ||
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