I think the old HiteRite seat dropper springs are excellent for cost and simplicity, but of course they are like hen's teeth now. I've been looking at torsion spring suppliers and adapting seat clamps and collars to make one (actually a few, as I have some pre-orders :) but JUST before I get hacking, does anyone know of an alternative that's still in production, or a common hack/mod to make one?
Added as requested: here's an advert for one where you'll see what it looks like and how it works:

Cheers! Ben
