Primitive Archer

Main Discussion Area => Bows => Topic started by: Knoll on March 03, 2015, 05:55:33 pm

Title: Initial detection of Set ... updated tiller
Post by: Knoll on March 03, 2015, 05:55:33 pm

Working with an ash board ... 66", 1 3/4 @ fades to 1/2" tips.
Objective is 47# @ 25".
Still working w/ long string ... 18", 48#.
I've been tillering mostly be removing wood from belly.
Noticed bit of set mid limb, both limbs.  The bottom limb is bit shorter in length than top.  Top limb set is a bit more than bottom.

Does detection of set this early in tillering process suggest tillering approach should change?  For example, change to removing wood from edges?  Or focusing more on the area nearer to fades?

Title: Re: Initial detection of Set ... impact on tillering focus
Post by: PatM on March 03, 2015, 06:14:52 pm

There is no good reason to reduce width.

Title: bow
Post by: Badger on March 03, 2015, 06:17:16 pm

   I didn't see the pic in the first post. I made. Maybe one of the guys here can come along and put little marks where it is stiffer. I see several areas that could uses a little work. Do you know how to use a tillering gizmo?

Title: Re: Initial detection of Set ... impact on tillering focus (pic added)
Post by: bradsmith2010 on March 03, 2015, 10:43:05 pm

do you know what the moisture content of the wood is??? that might be a reason the wood is taking a set,,

Title: Re: Initial detection of Set ... impact on tillering focus (pic added)
Post by: vinemaplebows on March 03, 2015, 10:44:58 pm

People tend to want to tiller too soon near the fades. Don't get to eager there. ;)

Title: Re: Initial detection of Set ... impact on tillering focus (pic added)
Post by: mikekeswick on March 04, 2015, 02:36:50 am

Your bow will take some set.
It's upto you to distribute it where it will do the least harm.
You want to no set inner limb, a little mid limb and the rest midlimb to tip....ala the mantra bow from TBB's.
If your bow is taking set mid limb alone now then work on the areas it isn't taking set - it's that simple! I always draw the profile of the bow onto my tillering board so that immediately I release pressure on the string (longstring) I can see exactly where the set has occured. If i'm getting close to fulldraw and the bow is braced i'll exercise it then unstring and quickly put it up against that traced profileto get the yeball on set and where it is.
As Badger says get a tillering gizmo made if you haven't already got one. Invaluable tool.

Title: Re: Initial detection of Set ... updated tiller
Post by: Knoll on March 04, 2015, 03:58:55 pm

Here's where the bow is today.  47# @ 23" and 6 1/2" brace.

(http://i884.photobucket.com/albums/ac48/knolltop314/100_2910.jpg)

(http://i884.photobucket.com/albums/ac48/knolltop314/100_2913.jpg)

(http://i884.photobucket.com/albums/ac48/knolltop314/100_2914.jpg)

Left limb (mid portion) still seems to be in need of wood removal.

Whatcha think?

Also, am planning to reflex/temper the limbs.  Would this be good point to do so, or wait until full draw (25") is reached?

Title: Re: Initial detection of Set ... updated tiller
Post by: Knoll on March 07, 2015, 01:36:23 pm

Here's where we ended up.

(http://i884.photobucket.com/albums/ac48/knolltop314/100_2918.jpg)

And immediately after unstringing.

(http://i884.photobucket.com/albums/ac48/knolltop314/100_2919.jpg)

The Wife is shopping.  So no f/d yet.

Title: Re: Initial detection of Set ... updated tiller
Post by: huisme on March 07, 2015, 02:24:42 pm

It looks a lot more even to me, but you're going to have to get that FD to us when she gets home ;)

Title: Re: Initial detection of Set ... updated tiller
Post by: bradsmith2010 on March 07, 2015, 03:03:29 pm

it looks very nice,, shooting for distance or through a chrono will give you information that will help on your next,,