Does anyone have any info regarding loss of FPS using the zero effect rest. Does this mechanical link designmake for a slower shot. I am in the market for a drop-away but am undecided at this point because of little technical concerns. Opinions onany of them would be appreciated

I've never used one because I don't like the looks of them. To me they look way too complicated and bulky. And prone to breaking.

I have used one for almost 6 years. No breaking or problems. Also increased my arrow speed compared to the TM hunter I always used by a few fps. I like em, but am in the mood for something different. When I got it, it was the only game in town really. Now, lots of choices for dropaways that are less complicated.

gzg, I ABSOLUTELY understand your concerns... Read thisthread I wrote over the summer: http://www.huntingnet.com/forum/tm.aspx?m=1687790&mpage=1&key=pass%2csalt& amp;#1687790

To answer the original question, the slide is supposedly made of Teflon; there shouldn't be any friction issues there. Nothing else in the mechanism or linkage should slow anything up.

I bought a zero-effect last year after some years of tinkering with different rests. All I can say is, I probably will never use anything else. Although in pictures it appears bulky and complicated, when you put it on, it is just about the most simple and uncomplicated rest you can have, at least among rests with movable parts. There is no loss of speed or anything else to complain about as far as I am concerned.
I stayed away from conventional drop away rests, because I didn't want an extra string running somewhere, and if you caught the string on brush on the way to your stand and pulled it loose or broke it, you might as well go home.
My thoughts on it.

The muzzy rest will not decrease your fps , if anything it will increase .
I have used them since they came out with the first model , fist year production with the roller cabel gaurds . They are a good rest the only drawback I have had with them is the arm cracking , and the hook twisting . If you catch the hook on something , say when doing a stalk hunt it has a tendancy to twist effecting height ,something I have found that helps is to cut some of the hook off so it does not stick out so far and catch things . You would think tightning down the allen screw that holds the arm in place would help , but thats how they crack , nothings perfect ,the muzzy has been a good rest in its time , but the limbdriver is taking its place on my bows .

Yep, the twisting of the armature is my only complaint so far... I wonder if it would help if instead of the piece that inserts through the metal which you tighten with the allen screw being completely and smoothly round -- if it were machined to have a multitude of flat edges on it so the allen screw could "seat" more firmly against a flat edge?

I may suggest that to Mark, the technical advisor for Muzzy...

Ive allso thought of sticking something in the other hole that is empty , that may even out the fources .

Here's the response I got back from Mark; he tried to post it here but couldn't (I don't think he's a registered user -- YET Right, Mark? )... so I'm putting it here for him...

"Actually all of the new arms we have for this past year have been redesigned and we eliminated the 3 prong nut and use a flanged or propel nut in the main arm, we also beefed up the main arm and eliminated the breakage problems. You can literally tighten down the center adjust screw until you round out the screw head and it will not break and I can assure you can tighten it down more then enough to eliminate any hook movement. We normally trim off a little of the hook just to make loading an arrow easier, but many still prefer the longer hook and actually the curve of the hook eliminates a lot of grabbing."

You guys are very helpful-thanks for the info Greg-your review of this rest is the only reason I am considering it-I appreciate everyones input.....this is my new favorite website!