That link proves that even the late, great Sheldon can have a silly idea from time to time. But, when you've done as much with bikes as Sheldon, did, what else is left?

The star nut is an idea that's been used for a long time; but it can be replaced with a 'Headlock", either from Azonic ($22) or Sette ($12). For those, the star nut must be removed, but they do a BETTER job of holding the works together, IMO. My daughter's AND my nephew's new bikes both have headlocks in them -- I don't have one because I can't right now clear the steerer tube.... The headlocks won't work with this idea, though, since the through-bolts aren't long enough.