Compare 66inch limbs to 68inch limbs

[King Custard]

Once again to the archers think-tank, to beg of your experience and findings!

Ok - so I'm using 68in @40lbs limbs, 39lbs (true) on the fingers, drawing 26inches of arrow to the button center - arrow length 27&1/4inches...and I want better 'cast'...more transfer of energy into the arrow...flatter trajectory...better sightmarks for 90m or 100 yards.
If I understand it correctly I really could be using 66inch limbs - giving a lower brace height/longer powerstroke ( which is my next equipment experiment)
Question:
assuming all other things were to stay the same (dw/dl, limb model, nock height etc - but BH is less of course)....
What poundage limbs do I require????
(i'd really like to avoid trying several different limbs if the answer is relatively obvious...time is short and life is cruel etc)

40lbs- even though they may 'feel' heavier in a shorter limb?
or will I get away with 38lbs limbs, remembering the short drawlength - will the extra bit of powerstroke more than make up for the lower 'punch'...AND give me better distance sightmarks??
Whats your experience of going to shorter limbs - please share cheers!
Best add that I currently NEED 39lbs on the fingers to bareshaft...would quite like to keep using my X10's

[worthipa]

In theory you should need 38lb Short limbs.

[King Custard]

And they'd get me further too? wow - bonus!!!

[speed]

Speak to a coach

If someone in your club has 40lb or 42lb short limbs and they will let you try them on your riser then spend the time trying them. Do a walkback if you can get outdoors and see how they feel. Shorter limbs will give you a better cast but if you do not feel comfortable with them is there any point using them just to get a few yards more and being able to keep the same arrows.

There are a lot of experienced coaches on this site who I know will flood this post with lots of helpfull info for you.

[ASW1973]

40 lbs will still be 40lbs so irrespective of how it feels there is no greater musculature needed to draw and shoot 68/40 or 66/40 so get the 40's. my actual advice would be get a short riser which will work better still ie it will make 66 42lbs and i have never met anyone who had to wind down a short riser. anyway if you are still struggling for a set of limbs send me a message by 29/12 and i will source you a set (or a short riser for that)

[King Custard]

Originally Posted by speed

Speak to a coach

If someone in your club has 40lb or 42lb short limbs and they will let you try them on your riser then spend the time trying them. Do a walkback if you can get outdoors and see how they feel. Shorter limbs will give you a better cast but if you do not feel comfortable with them is there any point using them just to get a few yards more and being able to keep the same arrows.

There are a lot of experienced coaches on this site who I know will flood this post with lots of helpfull info for you.

Everyone at my club is a monster sized- gorilla armed, longfaced titan (shooting longer/lower weight limbs...or a little girl.
Like to think that I'm at least somewhere in between...
and as for coaches - we have three...but none as well versed as those on AI...great beginner coaches...but...and I don't think they'll say I'm wrong .

[JohnK]

All things being equal (limb design, poundage, tune, arrow etc.), dropping to 66in will probably only give you about 1 foot per second in arrow speed.

[rod]

Originally Posted by JohnK

All things being equal (limb design, poundage, tune, arrow etc.), dropping to 66in will probably only give you about 1 foot per second in arrow speed.

unless you switch to HEX5's like me

[King Custard]

Originally Posted by JohnK

All things being equal (limb design, poundage, tune, arrow etc.), dropping to 66in will probably only give you about 1 foot per second in arrow speed.

Ahhh - now Im not fully conversant with the full range of physi-math here...are you saying John that there is no other benefit of going to 66 inches?...because 1 fps sounds ' negligible' to me

- I'm hoping you'll say that there'll be more energy imparted to the arrow because of a longer powerstroke with 66's, and that while speed will only increase about 1fps ...that there is some other magic that will happen to increase/better my sightmark??? AFAIK there is no other magic...is there?

[BorderBows]

Originally Posted by rod

unless you switch to HEX5's like me

How are you getting on with them?

what were you shooting before, and whats the difference?

if i dare ask?


Sid