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There is more to ther picture than just yes-or-no, grease-or-not. Sometimes it works, other times not. As in the pic above, one of those materials performs wonderfully without grease. Smooth, flat curve at all temperatures and pressures.. excellent, just excellent. On test #2 with grease, the drag performed so badly it was just horrendous; never seen anything like it. Jerks, spikes up to double the set drag, runout all over... jeez. Same goes for another material I tested just last week. Too bad; had good hopes for that one.
Temperature, speed, fade and runout are all things I've written about ad tedium and discussed for years with both Cal and Jack; it's nothing new.
On the other hand, some of those materials exhibit a slight stick-slip or stiction ratio, which is normal, that can largely be eradicated by use of a proper lubricant. Other lubricants are a nightmare.
Long story.
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