Following is some info I thought some might find useful-
Apapro, how fast does the rest twist/drop away? Sufficiently fast enough to prevent fletch contact for a 28" arrow launched at 290 fps from a 21.5" powerstroke bow?
How about if you adjust the dwell time so the rest stays put a bit after release, to give the shaft some guidance?
Rangeball:
We have shot arrows through the rest in excess of 320 fps. with 4" and 5 " fletch. Both on 30" and 27 " arrows. The rest is super fast to move out of the way when set on its fastest setting. There are three settings for spring tension, and there is also a kit that you can buy for the twister that turns it into a conventional spring loaded rest if you so desire.
In our testing we also used the turbo knock large and small. At speeds of 310 fps + we had no problems with this type of flething ( when the bow is properly tuned)
As far as dwell time that will be adjusted with the spring tension and rope length.
I shoot the latest prototype on my Extreme VFT and shoot speeds of 320 fps. and I have the Twister set at its stongest setting. Last night I shot two rounds of Fita with it and scored 297 (21 x's) and a 299 (19 x's). That is out of a bow with a 6 5/8" brace height..
So you see that the rest is extremely accurate.
Let me know if that answers your questions.