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<blockquote data-quote="RobGMN" data-source="post: 8906197" data-attributes="member: 683408">Weird. I bought a bike form a guy who started a while side hustle during COVID of assembling and selling PCs from parts, because assembled units were so hard to come by.The profits bought eBikes for the whole family.&#039;Wish I had thought of it.What&#039;s wrong with square ports? Are you not familiar with the most basic concepts in fluid dynamics?Hard corners = bad. Rounded corners = good.Do you think in an electrohydrodynamic drive, they would push the seawater through a tube that abruptly ends and makes a 90 degree turn?Is it just coincidence that exhaust headers on cars don&#039;t have sharp bends in them?A link to just two (of probably hundreds, if not thousands) of papers you can read about sharp corners in fluid dynamics:<a href="http://www.damtp.cam.ac.uk/user/hkm2/PDFs/Moffatt_1964_JFM_18_1.pdf" target="_blank">http://www.damtp.cam.ac.uk/user/hkm2/PDFs/Moffatt_1964_JFM_18_1.pdf</a>[URL unfurl=&quot;true&quot;]https://eaglepubs.erau.edu/introductiontoaerospaceflightvehicles/chapter/bluff-body-flows/#:~:text=Here%2C%20the%20flow%20in%20the,the%20Reynolds%20number%20is%20finite.[/URL]</blockquote>

[QUOTE="RobGMN, post: 8906197, member: 683408"] Weird. I bought a bike form a guy who started a while side hustle during COVID of assembling and selling PCs from parts, because assembled units were so hard to come by. The profits bought eBikes for the whole family. 'Wish I had thought of it. What's wrong with square ports? Are you not familiar with the most basic concepts in fluid dynamics? Hard corners = bad. Rounded corners = good. Do you think in an electrohydrodynamic drive, they would push the seawater through a tube that abruptly ends and makes a 90 degree turn? Is it just coincidence that exhaust headers on cars don't have sharp bends in them? A link to just two (of probably hundreds, if not thousands) of papers you can read about sharp corners in fluid dynamics:[URL]http://www.damtp.cam.ac.uk/user/hkm2/PDFs/Moffatt_1964_JFM_18_1.pdf[/URL] [URL unfurl="true"]https://eaglepubs.erau.edu/introductiontoaerospaceflightvehicles/chapter/bluff-body-flows/#:~:text=Here%2C%20the%20flow%20in%20the,the%20Reynolds%20number%20is%20finite.[/URL] [/QUOTE]

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