Comments by "Lifted_Above" (@lifted_above) on "Fortnine is Wrong. 285 Crossplane Twin Engines Do Not Have Better Balance than 270 Twins" video.
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I'd been watching pretty much all of your previous engine configuration videos, details about balance and so forth. I used to be a subscriber to F9 videos, but walked away (not due to this issue but other issues). I had seen his video on this subject matter, and while I found it compelling, I did not take it as gospel, partly because of learning what you've put out here, also drawing from my own mechanical engineering career and curiosity based research which affords me a little window into manufacturing processes (machining, heat-treating, plating, but not forging).
Thank you for calling out a channel that typically gets nothing but praise, for something they have miscalculated and done wrong, claims that were made that weren't correct. Just because someone has high quality video production, a compelling story-telling format, and charismatic actors, doesn't make them scientifically, mathematically, or historically correct.
I'm sure Ryan would agree his viewers should do their own independent critical thinking and research before taking what they say as absolute fact. Just wish more F9 fans would practice this instead of drooling on their keyboard over ever video they put out.
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@snapcountersteer I was going to say this if someone else hadn't already. Why KTM's LC8 V-twins have run 75° instead of the more common Ducati style at 90°, I'm not really sure. Packaging a Vtwin with a wide angle is a problem in bikes. V-twin engine are already expensive to manufacture and make everything else more complex (cooling, intake, throttle body packaging, airbox, exhaust routing, transmission placement, camshaft actuation, and a lot more). I think the crowd who loves to criticize the lowly "parallel twin" engine configuration does so on the basis of having an emotional connection to V-twins, which of themselves, are sort of a historical rebellion against the trend of inline-4's. I'm not really sure even the Vtwin folks who criticize parallel twins understand why they have the emotional reaction they do.
Sound signatures between a Ducati and a CP2 Yamaha are nearly identical. Close enough to be hard to distinguish. Certainly the vibration and sound between the two configurations is not identical as a Vtwin lopes and bucks irregularly while idling, and the Parallel twin tends to have various RPM where buzz appears and disappears, in my experience, the Vtwin stays pretty much the same vibration at all RPM ranges.
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