I'm learning the heel/toe technique for use on my single foot pedal.
I've primarily used heel down technique before and would like to use the heel/toe for quick doubles.  In the past my spring tension has been pretty loose.  Any suggestions on spring tension for the heel/toe technique???

To properly get the heel-toe thing going your tension should be very high at first.  Once you've got the motion down and your muscles built up the tension can settle back somewhere in the middle.

You do not want a loose pedal for this technique.

I don't recommend max tension, but maybe that's just me. I think at max tension, the pedals are too "jumpy", and instead of gliding well they jerk back too much. I can go much faster at slightly looser than max than at max, both for singles and doubles (even though I don't use heel toe for doubles). Scheming demon and I might have different concepts of loose and tight, but I certainly agree with him that you need your pedal to be tight enough to respond quickly for this technique. I think, though, that if it's too tight it will work against you and not let you build up enough "whip" in your stroke that you need for power and speed in heel-toe.

so i climed down off my high horse, went over to the kick drum and tried the heel toe. man does that hurt. a real kick butt young drummer showed it to me a few years ago.my peddel seems to small for this, or am i doing something wrong. my heel sems to right on the hinge so i get no travel on the heel part

If you're having trouble learning heel toe because your feet are too big, you can switch to a bouncing/sliding method that works just as well (look at virgil donati's double stroke bass drum rolls). Just spend time every day alternating doubles with your hands and feet, and your feet will develop their own sliding/bouncing motion over time.