Dumbell Flyes / Peck Deck

[1Michael]

Do these two do the same work?

Would it be a good idea to drop one? Which one?

[BrendanK]

Well personally I do a 2 sets of incline db flyes, and then two sets of cable crossovers at a different angle..The cables really seem to hit the inner chest on the "squeeze" and the db flyes seem to concentrate more so on the outer chest...That's just me though..

[Sir_Malak]

eh..peck deck for me usually works my arms more than my chest but that maybe cause my arms are shorter

I dont think either of them is really great for mass though imho.

[Shortfuze]

I'd keep the DB flyes. The fly movement(arm horizontal adduction) works the:
-coracobrachialis
-pectoralis major
and to a lesser degree:
-deltoid anterior
-latissimus dorsi

[Dominik]

Do these two do the same work?

Would it be a good idea to drop one? Which one?

If you're talking about this one, it can be a risky exercise if your elbows are high on the pads or you let them go too far back. I'm probably in a small club on this one, but I always found it to be a really effective exercise for chest since it completely zeros in on the horizontal adduction movement. If you keep your elbows from traveling back behind your shoulders, and keep them below the line of your shoulders, it should be reasonably safe.

The seated machine fly is probably the better (safer) machine however. Where the machines and cables really excel and the DB flyes fall short, is in the resistance curve. As the DBs near the top of the arc, there isn't much resistance, making it more of a "stretch" exercise.

[Shortfuze]

If you're talking about this one, it can be a risky exercise if your elbows are high on the pads or you let them go too far back. I'm probably in a small club on this one, but I always found it to be a really effective exercise for chest since it completely zeros in on the horizontal adduction movement. If you keep your elbows from traveling back behind your shoulders, and keep them below the line of your shoulders, it should be reasonably safe.

The seated machine fly is probably the better (safer) machine however. Where the machines and cables really excel and the DB flyes fall short, is in the resistance curve. As the DBs near the top of the arc, there isn't much resistance, making it more of a "stretch" exercise.

I agree with the resistance curve comment. Although I'm partial to free weights, cable flyes would hit your chest a lot better.