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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
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<blockquote data-quote="Cyborg" data-source="post: 104627" data-attributes="member: 3426"><p>I believe caution should be used with vacuum pumps. When you are sucking out pressure, you can also suck out some of the oil mist that is helping to keep things glued together. I stand to be corrected, but I think the pumps started with the drag racing fraternity. Originally they would just tap into the header and let the exhaust pull pressure out of the engines. When the "people against everything" started complaining, they had to reduce exhaust noise and this reduced their vacuum source, They then turned to pumps and then to pumps with relief valves so they wouldn't create too much vacuum.</p><p></p><p>Our friends with airplanes are afflicted as well <a href="https://www.aircraftspruce.ca/catalog/eppages/crankcase05-12429.php?gclid=CjwKCAiAksvTBRBFEiwADSBZfCUgBnPS6BmZPeTOC0kRLobvSAn8jE1MU7uDV4P7VmOzt3Idorb8GxoCo3kQAvD_BwE" target="_blank">https://www.aircraftspruce.ca/catalog/eppages/crankcase05-12429.php?gclid=CjwKCAiAksvTBRBFEiwADSBZfCUgBnPS6BmZPeTOC0kRLobvSAn8jE1MU7uDV4P7VmOzt3Idorb8GxoCo3kQAvD_BwE</a></p></blockquote><p></p>
[QUOTE="Cyborg, post: 104627, member: 3426"] I believe caution should be used with vacuum pumps. When you are sucking out pressure, you can also suck out some of the oil mist that is helping to keep things glued together. I stand to be corrected, but I think the pumps started with the drag racing fraternity. Originally they would just tap into the header and let the exhaust pull pressure out of the engines. When the "people against everything" started complaining, they had to reduce exhaust noise and this reduced their vacuum source, They then turned to pumps and then to pumps with relief valves so they wouldn't create too much vacuum. Our friends with airplanes are afflicted as well [URL]https://www.aircraftspruce.ca/catalog/eppages/crankcase05-12429.php?gclid=CjwKCAiAksvTBRBFEiwADSBZfCUgBnPS6BmZPeTOC0kRLobvSAn8jE1MU7uDV4P7VmOzt3Idorb8GxoCo3kQAvD_BwE[/URL] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Not another breather thread!
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