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techtalk:ref:engmech04g [2019/11/14 06:32] hippysmack [Slack tube testing on a 1998 1250S model] |
techtalk:ref:engmech04g [2019/11/14 06:34] hippysmack [Slack tube testing on a 1998 1250S model] |
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| An addition of 3" of positive pressure exerted (6" in actual height) on downstroke still yields a balance of 6" of total vacuum from the engine (showing 3” on left leg). \\ | An addition of 3" of positive pressure exerted (6" in actual height) on downstroke still yields a balance of 6" of total vacuum from the engine (showing 3” on left leg). \\ | ||
| In this example, the total pressure in the crankcase is still negative but with not as much pressure as it was at the last upstroke. \\ | In this example, the total pressure in the crankcase is still negative but with not as much pressure as it was at the last upstroke. \\ | ||
| - | {{:techtalk:ref:engmech:1slack_tube_figure_d_by_hippysmack.jpg?direct&400|}} \\ | + | {{:techtalk:ref:engmech:slack_tube_figure_d_by_hippysmack.jpg?direct&400|}} \\ |
| For this testing, a slack tube was made using an 1/8" hose barb fitting plugged into the timing plug hole with a length of 1/8" clear hose to the instrument. \\ | For this testing, a slack tube was made using an 1/8" hose barb fitting plugged into the timing plug hole with a length of 1/8" clear hose to the instrument. \\ | ||
