Im planning to try the Carbon Tech Cheetachs 650 for my light setup next.Their stiffer versions have been good to me, and this lightest one weights just 5.3 grs/inch.
With the .50 less spine compared to your .600s, you could go to even lighter pointweights.Talk about fast.

r,mika

 

Archery is simply an exercise in physics.... Ya don't get anything for free. Everything else remaining equal, a lighter arrow will fly faster. (though you may just loose something else). Good Luck and enjoy the experimentation!

Tom

 

What's the lightest weight I can use with my set up and how does the tip weight impact the equation

 

Two things to consider, too:

The lighter the arrow the more accurate you must tune your set up. This is why:
When you have a light arrow you need small feathers/vanes. Because of the low mass of the arrow large feathers will slow it down very quick. So if you want shoot distances beyond 40 yards you need relatively small feathers.
For the arrow to fly nice with small arrows the tune must be good.

When you choose lightweight points you have to consider the forward of center, FOC of the arrow, the balance point. Search here in the forum, you will find something, i am sure.

Good luck,

Heiko

 

Speed can be very handy in 3D.

but as mentioned by Tom it is physics and there is no such thing as a free lunch. as with most of archery there is always a compromise or trade off to be made.

As you increase speed your set up will become less forgiving and so form and tune become more important.

If you decrease the point weight of your arrows you will make them behave dynamically stiffer so will need to retune accordingly (you might need to weaken spring tension on your plunger button).

Also as speed increases your point on distance will change (if arrow length the same) which may impact your aiming system. That could be positive or negative.

To get more speed you can:-

* lighten the mass weight of your arrows, eg., lighter shafts (Cheetahs for example), lighter points, remove wraps, lighter fletch etc (spin wings/curly vanes etc.,), shorten,
* Reduce drag - look at fletching size and profile
* Reduce string mass - skinny strings mean faster arrows, lighter nocking points, reduced serving, etc.,
* Get the best limbs you can
* increase poundage
* Get a longer draw
* Get an overdraw to allow use of shorter lighter arrows...
* Get a better release - this wont cost anything but practice. A cleaner release will add speed (hooter shooters are always faster than fingers)

Other than getting a better release there are costs to all the other factors - you need to blend them in such a way suits you and your shooting requirements.

If a dragster rig was built with the above criteria it would indeed be fast - but it would be a dog to shoot.

When you are in 6gpp territory it might get twitchy - and you should check with the manufacturer that they are happy for you to go that light.

Its fun to tinker and find what suits you best - but for every tweak you make there is a consequence.

Good luck.

 

Small diameter is good to consider also when looking for high performance light arrows. SD along with low profile fletch will cause less drag, so light arrows will retain speed further down range. A few less millimeters in outside diameter can make a huge difference.

 

Remember too that as your arrows get lighter relatively less of the bows stored energy is transferred to the arrow. That excess unused energy has to go somewhere and since it can't generate heat or light (unless you have a REALLY strange bow) it will show up as noise, shock, vibration. For target shooting noise is usually not an issue unless its so loud it unnerves the guys shooting next to you--which may not be all bad. However shock and vibration can cause problems so care has to be taken to make sure that all accessories are tight and solid.

While lighter and faster makes some sense in target shooting you'll have to figure in the sectional density/wind drift correlation if you are shooting outdoors in windy condition. As mentioned, skinnier shafts may have merit.

Bear in mind as well, that as your shafts get lighter you are coming closer and closer to a dry-fire condition so you will want to monitor your limb and string condition more closely than might be required with heavier arrows.