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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] (current)
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. \\