ORIGINAL: TFOX
On 1 cam bows,draw specific cams are necessary to achieve level nock travel.
Dan,draw specific cams are more efficient than you might think.I am losing about 10 fps on my Am 35 because I am not shooting it at it's peak draw length(30")(I could tweak some more speed but chose not to)Your BT's do the same,everyone I have run numbers for are slower than what they would shoot with draw length specific cams.Specific draw cams almost always hit their speed rating at lower draw lengths where as adjustable sytems do not.
All my Hoyts have always shot faster,by quite a bit at lower draw lengths than adjustable models.
Hoyt has made adjustable draw length cams that have specific draw lengths to them which imo,is the best way to go about it.Basically draw length specific tunability and efficiency with the adjustability of module systems.AND,this is not cheaper to do.
I basically have seen roughly a 5 fps loss per inch (from 30")when the cam is adjustable verses a draw specific cam,or one that is designed for specific draw length.
That is a good post TFOX.
I have that Iron Mace of mine that has Trinary cams (basically its just a different name for Binaries like found on BowTech) and there is a massive performance difference, even on the SAME draw length depending on if you are using short draw mods or long draw mods. 10fps lost right off the top going from long to short, even in a 29" draw. That said though, the hell with the speed loss! I shoot that thing better at 28.5" with a longer valley and higher let off for my 29" draw length.
As to being cheaper to manufacture.... MeanV would be one to know. I am sure they are probably cheaper to develop, and I am certain that draw length specific cams are going to produce a more uniform draw cycle no matter what draw length you have. It might be a pain for the customer when it comes to resale... but frankly neither your dealer nor probably the manufacturer is concerned about the person buying your used bow.... they'd rather have you buy a new one. That isn't a slam... that is simple common sense. Your dealer is not in business to make things convienient for you... he is in business to make money. Now that said, if he wants to make money, convienience has a lot to do with it in the long run.... but anyone who tells you the customer is priority one is lying or else missing the forrest for the trees.... priority one is money.... and if it isn't, then you won't be in business very long.