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Valve wobble at speed

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Old Mar 25, 2026 | 11:52 PM
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Default Valve wobble at speed

Came across this Steve Morris Racing video showing a valve and spring wobbling all over the place at 9250 rpm. Fascinating stuff.

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Old Mar 26, 2026 | 12:59 AM
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Old Mar 26, 2026 | 01:19 AM
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spintron + high speed cam
still amazing to see, but tech that's becoming pedestrian.
https://www.enginelabs.com/engine-te...ain-evolution/
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Old Mar 26, 2026 | 12:22 PM
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Originally Posted by Rebelyell
spintron + high speed cam
still amazing to see, but tech that's becoming pedestrian.
https://www.enginelabs.com/engine-te...ain-evolution/
Thanks for the link, I was wondering how that was captured. ("Spintron" sounds like something out of the Jetsons!)

Also interesting to me is that the rocker doesn't appear to have any flexing in it - solid as a rock.
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Old Mar 26, 2026 | 04:07 PM
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Originally Posted by barkingrats
Thanks for the link, I was wondering how that was captured. ("Spintron" sounds like something out of the Jetsons!)

Also interesting to me is that the rocker doesn't appear to have any flexing in it - solid as a rock.
Yup, kinda catchy ain't it!
Not too many years back, I recall an auction of shop gear that included what was purportedly a "homemade spintron" made by legendary mechanic Smokey Yunick; supposedly built well in advance of any real spintron.
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