Primitive Archer

Main Discussion Area => Bows => Topic started by: cool_98_555 on November 10, 2018, 07:56:36 am

Title: Set goes away overnight?
Post by: cool_98_555 on November 10, 2018, 07:56:36 am
So I have this awesome bow that has about 1" of reflex.  After I shoot the bow for an hour or so, it goes to about 1.5" of string follow.  When I check it the next day, the reflex is back at 1".  Is this normal?  What's going on here?
Title: Re: Set goes away overnight?
Post by: Pat B on November 10, 2018, 07:58:49 am
wood is probably too wet still.
Title: Re: Set goes away overnight?
Post by: Badger on November 10, 2018, 08:00:54 am
    It is very common but it doesn't matter if it comes back in 1 minute it is still set. I have a bow right now that I am very frustrated with. Still a very good shooter but the bow took almost no set, about 1.2" but when I draw it to full draw the first time it will read 58# second draw and all draws after that it will read 53#. Let it sit for a few hours it does the same thing.
Title: Re: Set goes away overnight?
Post by: cool_98_555 on November 10, 2018, 08:14:54 am
It has been seasoned for 2.5yrs and it had one heat-treating session.
Title: Re: Set goes away overnight?
Post by: Badger on November 10, 2018, 08:34:43 am
  How much reflex did it have before tillering?
Title: Re: Set goes away overnight?
Post by: cool_98_555 on November 10, 2018, 08:38:27 am
It had around 1.5" of reflex before tillering
Title: Re: Set goes away overnight?
Post by: sleek on November 10, 2018, 09:00:22 am
    It is very common but it doesn't matter if it comes back in 1 minute it is still set. I have a bow right now that I am very frustrated with. Still a very good shooter but the bow took almost no set, about 1.2" but when I draw it to full draw the first time it will read 58# second draw and all draws after that it will read 53#. Let it sit for a few hours it does the same thing.

Have you heat treated it yet steve?
Title: Re: Set goes away overnight?
Post by: cool_98_555 on November 10, 2018, 10:32:16 am
Maybe I should heat-treat again...just to get some more moisture out of it?
Title: Re: Set goes away overnight?
Post by: Badger on November 10, 2018, 11:02:32 am
    It is very common but it doesn't matter if it comes back in 1 minute it is still set. I have a bow right now that I am very frustrated with. Still a very good shooter but the bow took almost no set, about 1.2" but when I draw it to full draw the first time it will read 58# second draw and all draws after that it will read 53#. Let it sit for a few hours it does the same thing.

Have you heat treated it yet steve?

  Yep, I thought it might still have some moisture so let it sit for a couple of months.  The poundage went up a little but still has the weight loss. The bow is overbuilt and plenty wide and tiller looks good. Holds about 1 3/4" reflex and settles in at about 2". It is a very good shooter but I think it would be better without the weight loss. No reversing it now.
Title: Re: Set goes away overnight?
Post by: PatM on November 10, 2018, 03:56:53 pm
 Some wood bows do just behave like a sinewed bow.  The combination of the back pulling the belly  back and the belly cells slowly expanding slightly over time.
 
   And that happens even if the wood is dry enough.    I find some Elm is frequently like this.  Kind of a hard but rubbery texture to it.

  Composite bows actually do this to a large degree.   I wouldn't worry about it.     Materials that were once living behave like living things.   They get tired and they recover.
Title: Re: Set goes away overnight?
Post by: Eric Krewson on November 11, 2018, 03:32:58 am
Lots of bows behave that way, some of mine do, it is just wood doing what wood does. My wood is seasoned 10 or more years, kept in a moisture controlled environment. All of my bows are osage, on long shooting sessions I can tell a few lose a little punch with the first shots being much faster than the last. I have other bows that never slow down or gain and lose set overnight, wood is wood.
Title: Re: Set goes away overnight?
Post by: Selfbowman on November 11, 2018, 08:50:33 am
Eric I tend to agree with ya. The great ones come 1or2 in a hundred. The rest are just really good bows. Except for the occasional failure . Yes 230 latter there is still a failure on occasion . :BB
Arvin
Title: Re: Set goes away overnight?
Post by: NorthHeart (240m3srt) on November 11, 2018, 05:20:06 pm
    It is very common but it doesn't matter if it comes back in 1 minute it is still set. I have a bow right now that I am very frustrated with. Still a very good shooter but the bow took almost no set, about 1.2" but when I draw it to full draw the first time it will read 58# second draw and all draws after that it will read 53#. Let it sit for a few hours it does the same thing.
Hi Badger, out of curiosity is the bow you speak of sinew backed?
Title: Re: Set goes away overnight?
Post by: George Tsoukalas on November 12, 2018, 05:03:45 am
That's 3 total inches of  set. That's a lot. Sounds too wet to me also. 2.5 years of unaided drying/seasoning may not be enough.
But then again heat treating a wet stave would cause drying cracks.
Is the design (too short, too narrow for draw length) the culprit?
Jawge