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RE: Speed is all you need! (?)

I shoot 67lb. at 270fps. I eat venison every year. PERIOD!

RE: Speed is all you need! (?)

Hi,

The difference between a softball or hardball isn' t just the weight and speed!

Some softball pitchers can attain hardball speeds,what about a golf ball?

What some of you failed too realize is a hard ball is a HARDER ball than a SOFT ball and a golf ball is harder than the others .

Granted the golf ball is traveling faster than than the other two, so what would you rather get hit by a golf ball traveling at 300' per sec or a ping pong ball at 400' per sec?

RE: Speed is all you need! (?)

I have never denied that speed is not needed . . . IT IS! But it is not ALL that is needed. If it was, one could equate the mass to zero and still kill a deer [in theory] with just speed alone and that just ain' t gonna happen.

Personally I shoot at 241 fps and 67# and 60 ft-lbs of KE and the only thing I regret every year is that I didn' t buy a bigger freezer.

RE: Speed is all you need! (?)

Dick,

are you having amnesia after 143 posts [>:][:o]

RE: Speed is all you need! (?)

heres a easy way to find out what arrow penatrates better light or heavy. also you will see what the driving force momentum will do in each case granted this is not a deer. two arrows shot out of the same bow at the same poundage one light going faster than heavy arrow. the target are you with me is a 2 by 6 kind of tuff on the arrows but it will show you what will happen. this should end the fast pingpong ball going fast compared to the golf ball bs.this test will surprise you on what you thought you knew.remeber this arrow and that arrow same diamater same bow weight. but differant weight and speed for the arrows this test should be done at 20 yards. common bow range check it out.

RE: Speed is all you need! (?)

Not that I know of. I accept that I erred stating that Momentum and Kinetic Energy are the same. But You' d need to refresh my memory some. I don' t recall saying that speed wasn' t needed. I believe in Kinetic Energy. If I am correct I have debated that we need both speed and mass to get the job done but that speed alone is not enough nor will mass alone get the job done. Nor have I said that Krisken' s arrow is too light or lacks the power to get the job done.

I am just not convinced that Momentum is what gets the job done.

RE: Speed is all you need! (?)

I found this on Martin' s site. I thought it fit right in with what we are talking about. Look about half way down at the " Arrow Penitration" section.

http://www.martinarchery.com/faq/facts.html#pene

60# Bow - 30" Draw

Quote:

Arrow Penetration Before an arrow can penetrate a target, it must be directed toward that target accurately and in a manner that ensures that it is flying straight and true. This is necessary in order to direct the kinetic energy of the arrow along its longitudinal axis and precisely behind and in the line with the axis of the broadhead. If the flight of an arrow is characterized by fishtailing or porpoising some of the arrow’s energy is dissipated and penetration is reduced. Kinetic energy plays a major role in penetration. A lighter arrow will, through increased velocity, maintain nearly the same level of kinetic energy as a heavier arrow. (See photo to right) Example: Reducing the grain weight of an arrow by 100 grains will only reduce kinetic energy by 5% or less.

What do you think about this?

RE: Speed is all you need! (?)

ACLakey thats just what i was looking for. this is why i don' t think people with short draw lenghts and low bow poundage should be shooting logs.however heavy arrows have one thing going for them at longer ranges they don' t shed velocity as quickly as light arrows which means more momentum for heavy arrow. but they don' t shoot as flat as light arrows so if you shoot light arrows with plenty of ke i see a advantage with the lighter set up at normal bow ranges and farther.thats if you can hit with it.