Purpose of the machine fly is to build middle chest size and definition and striations in the pectoral muscles. Fly machines are not your best choice for building mass, but are very useful in creating definition.
Many commercial and home gyms are equipped with a variety of pec decks that approximate the flying motion. When using these in your training, work toward getting the fullest possible range of motion, stretching the pectorals to the maximum at full extension, then giving the muscles an extra, isometric contraction once youve brought your arms as close together as possible.
Guaranteed to add size and shape to your chest and deltoids, the Powertec Workbench Pec Fly Accessory duplicates the classic dumbbell fly without compromising your form or safety. The pec fly accessory features dual moving lever arms, which help maximize the exercise by maintaining resistance throughout the entire movement. By keeping tension on the muscle at all times, you receive the ultimate pump.
The accessory is also well built, with a relatively lightweight frame that provides quick and easy in-and-out access. The pec fly accessory--which supports 100 pounds per arm--measures 52 by 26 by 18 inches (W x H x D).
Assembly is actually pretty straight forward; the directions consisted of a one page exploded view and relatively few parts that came securely packaged:
No instructions, not a huge deal because it is so simple, just use the picture on the box for assembly.
The pivot points come pre-greased. Eventually you might need to reapply some grease or silicon spray to keep everything operating smoothly.
Minor complaint: The sticker on fly arms was crooked and even partially peeling off of the metal.
When doing free-weight dumbbell flys you do not have the same resistance throughout the complete range of motion. By the time you get to the top, your pecs and arms aren't working as hard; they're just balancing the weight.
Using the Powertec Workbench Pec Fly Attachment you will maintain the same weight resistance throughout the entire rep, even at the top. The levers hold the weight away from you so the load is still pulling down when you are at the top of the rep. Because of this, using the pec fly attachment will deliver faster results, and, unlike dumbbells, you can cross your hands at the top of the motion for a greater squeeze.
You cant use 45lb weight plates on the WB-PFA10 without compromising the range of motion. The circumference of 45 lb plates is too large; you have to use 35lb plates. Even with using 35s you can still get 100lbs on each arm with no problem.
The greatest resistance is at the top of the motion, which is just the opposite of dumbbell flys. The pec fly does not provide the same stretch at the bottom of the rep as dumbbells do.
The video below shows Lee Priest doing rear delt raises on the Powertec fly machine. You can also use the pec fly attachment to do rear delt raises.
Is the Powertec Workbench Pec Fly Accessory worth the $? The fact that you really have great resistance at the top of the rep (and can cross your hands for a greater squeeze) is what makes this attachment worth it. The pec fly is supposed to hit the inner pecs (cleavage if you will) and this attachment certainly does that. If you feel by using this attachment youre missing out on the stretch at the bottom of the rep, you could always do dumbbell pullovers, or do regular dumbbell flys followed by the pec fly accessory for the ultimate pec shaping routine.
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