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03-04-2002, 12:54 PM
#2
Join Date: Feb 2003
Location:
Posts: 520
RE: Question for JeffB "BowTech bow report"
The light arrow vs heavy arrow stuff is clear enough. How fast the arrows moves depends on how fast the bow string can move. if the arrow weighed next to nothing you would get a speed equal to the string's. As you add weight the string speed slows down, but presumably it is more than a direct relationship since eventualy you reach a point where the string won't move at all. Also you have the situation where weight increases friction as well as directly consuming energy that would otherwise contribute speed, so it isn't going to be just direct.
I was curious about why Jeff thought the parallel limb thing was bad for speed. Is it just the guy running on a flatbed truck thing where you go as fast as you can run, plus the truck's speed? In the case of the Patriot since the limb tips basicaly don't move towards the target, that effect isn't aded to whatever juice you get from the cam doubling and limb motion towards strightening the string which constitute the basic speed engines. Still the bow seems fast.
I was curious about why Jeff thought the parallel limb thing was bad for speed. Is it just the guy running on a flatbed truck thing where you go as fast as you can run, plus the truck's speed? In the case of the Patriot since the limb tips basicaly don't move towards the target, that effect isn't aded to whatever juice you get from the cam doubling and limb motion towards strightening the string which constitute the basic speed engines. Still the bow seems fast.
03-04-2002, 01:58 PM
#3
Nontypical Buck
Join Date: Feb 2003
Location: CT, USA
Posts: 3,058
RE: Question for JeffB "BowTech bow report"
Todd,
To put it simply..they don't have as much "snap"..
If you look at the very fastest bows on the market you will see that they all have much more limb travel due to longer length limbs (comparitively) and the angle they come off the riser...(causing them to have to bend farther still..more stress)
In the case of short/parallel limb designs: they "load up" and can't get that arrow moving as efficiently since thy don't have the momentum/travel...It's the long lever vs. short lever syndrome....longer limbs(or levers) have more leverage...when there is less limb to do the work, and less stress applied, the system does not work as efficently..as the arrows get heavier..it has to work harder to move that mass
In the case of the Patriot..the levers (limbs) are bit longer, the cam is more agressive, and it seems that they have figured out through trial and error a better level of Pre-load or "stress", while retaining the major benefits of the technology in general.
And yes I have done other reviews here, though not quite this exhaustive...A search for "Bow Report" in the technical forum should turn some up.
JeffB
To put it simply..they don't have as much "snap"..
If you look at the very fastest bows on the market you will see that they all have much more limb travel due to longer length limbs (comparitively) and the angle they come off the riser...(causing them to have to bend farther still..more stress)
In the case of short/parallel limb designs: they "load up" and can't get that arrow moving as efficiently since thy don't have the momentum/travel...It's the long lever vs. short lever syndrome....longer limbs(or levers) have more leverage...when there is less limb to do the work, and less stress applied, the system does not work as efficently..as the arrows get heavier..it has to work harder to move that mass
In the case of the Patriot..the levers (limbs) are bit longer, the cam is more agressive, and it seems that they have figured out through trial and error a better level of Pre-load or "stress", while retaining the major benefits of the technology in general.
And yes I have done other reviews here, though not quite this exhaustive...A search for "Bow Report" in the technical forum should turn some up.
JeffB
