Trad Gang
Main Boards => The Bowyer's Bench => Topic started by: countrygirl on February 16, 2009, 11:35:00 AM
-
Tom has been working on a BBO and we think we are at the final string tillering stage.
The bow is currently 47 pounds and is 66 inches nock to nock.
It is braced at 16 inches in this photo. Do the limbs look right or do we need to take some more off and if so which limb and how far out from the riser.
We think the right limb is not bending as much but are not sure where to take more wood off(by sanding).
Thanks for your advice. (http://img.photobucket.com/albums/v338/countrygirl32082/IMG_1570.jpg)
-
All the bend is concentrated in one area.You need more wood off close too the fades and the outer third also.A tilering gizmo really helps with this.
-
Which limb??? and what tillering gizmo?
-
Your near handle is way too stiff. You are going to loose serious weight if you work them too much but you'll need to blend the bend in a little more. Also draw a line on the tips about 6" or so from the end and make sure you are getting bend out to that area.
Mike
-
Whoops sorry I posted this in wrong area! Thanks for moving it. Shows I have been away too long! :knothead:
Hey wingnut...dang you talk just like trashwood! ;)
For us mere mortals...does "the near handle"..... mean...the wood near the handle??? Do you mean on both sides of the handle? We are just infants...at bow building...so consider that we know very little and speak simply please.
-
Check out the post titled "Tillering Graph" on the bowyers bench
That bow is bending near the handle.
Your bow is straight out from the handle and starts it bend out to far on the limb.
-
Do a search for erics tillering gizmo it will help you out alot. Definatly needs to bend more right next to both handles it also needs the outer third of both limbs thinned. Don't take any more off the area that is already bending. Good luck and go slow and check it often.
-
Here is a picture of my gizmo
(http://i261.photobucket.com/albums/ii45/heilakka/hickory/tilleringgizmolatest.jpg)
(http://i261.photobucket.com/albums/ii45/heilakka/hickory/tilleringgizmosideview.jpg)
-
Here is your pic edited.
Green = remove wood.
Red = too much bending.
(http://mysite.verizon.net/vzep2hbr/sitebuildercontent/sitebuilderpictures/CGbowedit.jpg)
-
Great info guys, Thank you!! He will work on it Tuesday and post another picture.
-
Good luck Dina!!!!!!!!!!!!mARCO#78
-
There 10 other experts ahead of me.So let me add my two cents in.First off never use a tillering board that holds your bow string in one place for long periods of time.Remember wood has memory.And when it's held on a tillering board for long periods of time.While you took your picture or when you stand back and looking at it for a long time in your tillering board your teaching your bow memory.You want to teach your bow memory,while not butting stress on your limbs.
If your bows 49 pounds now what do you think it will be by the time you finsh tillering and sanding it.Make a tillering board with out the notchs.Attach a pully to the foor at the bottom of your tillerinng board put a rope through it attach to a scale[deer scale].I HAVE MINE SET UP USEING A SMALL BLOCK AN TACKLE SYSTEM USED TO RAISE DEER.works a lot better,easer to stand back hold the rope and look at your bow on the tiller board.Use a long string untill you can brace the bow.That way you can tiller it to your weight,never going past your intended weight.This dos'nt but exsess stress on your limbs.[NO LONG TERM HOLDING]And you can tiller it right back to your draw leanth.No guessing weight,you always come out with the bow weight and leanth you want.I was showed this method when I started over 18 years ago.And it's worked on a lot of bows.Way to many to remember.
DEAD IS DEAD NO MATTER HOW FAST YOUR ARROW GETS THERE.