Why do shorter blades have a higher tip speed??? Tip speed is only a function of sprocket ratios and if a short blade and a long blade had the same ratio, the long one would be faster.Shorter blades will have a higher tip speed and will spin around to make contact with uncut grass sooner than a longer, slower tip speed blade.
Um, in this case... shouldn't that be a "green hole"...? Or doesn't it antimatter?Albert Einstien first did his research on a Lawn Boy. I find that the grass cuttings are transformed into a beam of plasma and disappear into the Twilight Zone. However, black hole formation is a dangerous possibility.
Approach "sonic speed"??? You honestly saying you have a blade tip speed approaching 750mph. LOLThe mfgs want to keep tip speed high for cutting ability/efficiency, but low so they are quieter. As the blade tips approach sonic speed, they start popping and get much noisier, plus the wear on the blade tips increases dramatically. It's a trade-off between efficiency and noise and longevity.