A Wierd Thing...

[arachnid]

Hi Guys.

So I finished the tri lam I`ve been working on (I`ll post it once I`ll get some proper pictures).
Tillered it to 40#@26". Or at least that what the scale showed on when the bow was on the tiller tree.
Once I drew the bow it felt lighter then 40#. So I held the scale in my right hand and the bow in my left hand, hooked it to the string and
drew the bow with the scale to full draw- and the scale showed 30#!!!

I measured my draw lenght again and it`s 26", not less... SOOOOOO.... what the hell is going on?

[Josh B]

I would guess that the 26" on your tillering tree is measured from the saddle that holds your bow and your draw length was measured from the back of the bow.  The thickness of the handle area would be the difference between one draw and the other.  Josh

[willie]

Dor

Lately, I have not been to happy with my measuring set-up. I bought a hanging scale a few year back like this.....

http://www.3riversarchery.com/Rubbermaid+Pelouze+Hanging+Bow+Scale_i401000_baseitem.html

which seems to work ok for its intended use, but I have had less than adequate consistency when using it with a beyond a pulley on the tiller tree. It seems to make a big difference whether you take the reading by stopping on the way up or the way down. (most likey a better pulley would help some)

I have been wanting to see what other guys use, especially as I have been making more use of Badgers no set tillering method, and wish to be able to take more accurate and precise weight readings

willie

[arachnid]

The saddle is marked 3" so the full 26" draw does consider the thickness of the handle.

[Josh B]

It was just a guess.  Having ruled that out, I would suspect the scale as well.  Josh

[osage outlaw]

I made the mistake of not realizing how far the hook moved on my scale.  I had it on the wall with measurements marked.  I would pull it down to the 28" mark but actually the bow was only pulling 26" or so.  All of my bows were heavier than what I thought.  I have a dowel rod tied to my scale hook with measurements on it.  Now it moves with the scale so I am getting an accurate reading.  I know its the opposite of what you are seeing but thought it might help.

[Badger]

  Put it back on the tiller tree and measure again, if it still reads 40 you are not getting to full draw when pulling it.

[arachnid]

  Put it back on the tiller tree and measure again, if it still reads 40 you are not getting to full draw when pulling it.

I did and I am pulling it to full draw. I even checked my draw length again just to be sure I don't have ha shorter draw then I thought. It's 26". I'll try to post so pictures later...

[Del the cat]

I once screwed up big time by reading kilograms instead of pounds ...
I got some white paint and painted out the KG scale after that.... damn French units (spits on floor)
Del

[arachnid]

I once screwed up big time by reading kilograms instead of pounds ...
I got some white paint and painted out the KG scale after that.... damn French units (spits on floor)
Del

 

[bobbykelley]

I once screwed up big time by reading kilograms instead of pounds ...
I got some white paint and painted out the KG scale after that.... damn French units (spits on floor)
Del

Now that's funny.

[son of massey]

This seems to simple to be your solution, but you said you attached the scale and drew to your full draw. Is that in reference to your hand reaching your anchor point, because if so the bowstring would be sitting a few inches forward of that-however tall your scale is. That would give a reduced weight. If you talk about full draw in the sense that the arrow was pulled back as far as your arrows would be at full draw-which is how you need to measure this-realize it can be hard (for me at least) to get the draw length quite right. Finally, at true full draw can you see the scale dial or do you have to let down some to read it?

[crooketarrow]

  See if your bow did'nt pick up a little string follow.

  If so bad tillering or your wood was a little green to start with, Little green is likely whats happened.

Only 2 things that causes string follow, string follow the only cause for a bow to lose weight.

  Turn up the tips if it isn't to bad this might bring it back to your weight it not give it to a kid.

  Unless your full draw messurements are not the same as you really draw. I'd find this out before I go beening tips.

[Springbuck]

  Is there much friction between the scale and the bow? Like the pulling string attaches directly to the bow, but maybe goes through a pulley before getting tho the scale, so you are pulling the bow, and some resistance from the pulley?

[arachnid]

  See if your bow did'nt pick up a little string follow.

  If so bad tillering or your wood was a little green to start with, Little green is likely whats happened.

Only 2 things that causes string follow, string follow the only cause for a bow to lose weight.

  Turn up the tips if it isn't to bad this might bring it back to your weight it not give it to a kid.

  Unless your full draw messurements are not the same as you really draw. I'd find this out before I go beening tips.

Bow has no string fololw. In fact it hold a nice 1 1/2" of reflex.
It could be that I didn`t measure my draw length currectly. I just did as I read online- place a fist on the wall and measure the distance from the wall to my mouth.

If there`s a better way I`d like to know, my draw lenght could be shorter then I know....