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Main Boards => The Bowyer's Bench => Topic started by: Crooked Stic on February 12, 2024, 10:52:54 AM

Title: Need thoughts
Post by: Crooked Stic on February 12, 2024, 10:52:54 AM

Let's say you wanted to design a short three piece longbow. 56 or 54 in. That would accommodate a longer draw. A 11 in. riser gonna need quite a bit of deflex. Would you go with wide limbs say 1 5/8s  to 5/8 at the string groove. Or narrow limbs 1 3/8 s to 1/2 at the string gloves. Shallow core wider or deep core narrow?
Of course gonna need a lot of reflex. And tapers come into play (something to be considered in optimizing.

Title: Re: Need thoughts
Post by: dbeaver on February 12, 2024, 03:20:24 PM

theres some shorter bows with short risers being experimented on throughout this thread. theres 30ish pages of discussion and lots of during the build info.  perhaps you can glean some info from this thread "Topic: 68 in. Kennym bow !,64 in.,60in.,58 in. & mods & builds FHLB & R/D !  (Read 56356 times)"

Title: Re: Need thoughts
Post by: kennym on February 12, 2024, 04:07:59 PM

I've been fooling with a 52"  FHLB one piece , it likes .001 total taper, I made it 1.5" wide.

14" riser, so on a TD you will end up with more riser, if you hang the wedges off 4" you have 19" worth. So if you go 56" they would be kinda close in working limb.

The FHLB is heavily deflexed and a bit more reflexed... :)

Title: Re: Need thoughts
Post by: Kirkll on February 13, 2024, 01:31:06 PM

You definitely don't need to go down to an 11" riser to pull that off.  Narrow deep core limbs rule on long bow limbs...   look at the Shrew design Mike... Those are built in 52" length....but they are one piece.

i built a few of those in a TD formate years ago i called "The Yeti" that had both RC limbs and hybrid long bow limbs.... but the shorty bows never really sold well, so i took them off the line up and quit building them.

Here is a 52" prototype that developed a bit of noise in the fade area that i hunted with for a couple years, and hung it on the wall of my shop. I revised and lengthened the riser fades after this one, and had much better luck.

Same bow at a 3D shoot being drawn 30"

Here are the 52" TD's with RC limbs. both of these have 16" riser