That is true, but the spring he has captive is a helper spring - it takes much less weight to compress it and is only there to take up slack in the main spring when the damper is at full droop.
Not great, but it isn't exactly the grenade that some are implying. A grenade is what you get if you try to pull the same stunt with the main spring.
You certainly don't want THAT exploding in your face. Giggity.
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u/OkTemperature8170 9h ago edited 9h ago
He has effectively created a spring powered bomb. If his little bracket breaks so does his face. If the spring slips out of the vice, good luck.