Request for those who are starting a new bow.

[PatM]

Yes.  It seems like it would reduce additional factors.

[PatM]

  Here is what is interesting about this test. best case scenario all 3 shots the same. If the 28" draw ever exceeds the 24" draw it would invalidate the test for any number of reasons which could also include invalidating the formula.

  My prediction is this. First 24" shot will be the fastest in all cases. 2nd 24" shot will be the second fastest and 28" shot will always be the slowest. The 28" shot and the second 24" shot should be pretty close, if they are too far apart it would indicate a bad test for any number of reasons. Aside for the point I am trying to make this little test really drives home how important it is to avoid set.

Well? 

[DC]

Is anyone else doing this? I'd hate to base anything on one test, especially mine.

[PatM]

Steve said he did it.

[leonwood]

totday I had some time to do this small test:

Bow: osage rd, 65” ntn (from the narrow stave I posted about earlier)

Shot fresh at 45@24
Arrow weigth: 385 grain
Speed: 180 fps

54@28
Arrow weight: 540 grains
Speed: 177 fps

Bow dropped half a pound in weight
44.5@24
Arrow weight: 382 grains
Speed: 176 fps

All three arrows are 11/32 pine with 5” turkey fletching.
All three arrows where shot ten times, no real big diffences in speed

Below some pics of the bow, arrows, weight and speeds (euro chrony so speeds are meters per second)

45@24


54@28


44.5@24


Osage reflex/deflex

[Bayou Ben]

Is it too late to back out?  haha.  I didn't think you all were going to be making bows that fast.  I'm going to get embarrassed.
Sweet bow btw leonwood.

[leonwood]

Is it too late to back out?  haha.  I didn't think you all were going to be making bows that fast.  I'm going to get embarrassed.
Sweet bow btw leonwood.

Haha thanks, I was working in this bow already so it was easy to do the experiment. I will finish the bow in the next week or two and post it in a new thread since it is my first osage bow

[DC]

Leon, you got what Badger predicted( I think). I wonder what I did? Maybe the heat treat messed it up. Did you heat treat at all?

[PatM]

You dropped weight to get 28".  He just drew his farther.

[DC]

Why didn't I see that

[leonwood]

Leon, you got what Badger predicted( I think). I wonder what I did? Maybe the heat treat messed it up. Did you heat treat at all?

Yes I did heat treat, I usually do this when I am at fullbrace and tillered to my final weight but at  about 18” so I can scrape the darkest stuff off the belly and  finetune the tiller a bit

[leonwood]

You dropped weight to get 28".  He just drew his farther.

Exactly, just tillered it to 24 and thought it waa good enough to go to fulldraw from there. Will start shooting it in now and finish it at 50@28

[willie]

You dropped weight to get 28".  He just drew his farther.

Exactly, just tillered it to 24 and thought it waa good enough to go to fulldraw from there. Will start shooting it in now and finish it at 50@28

Only lost half a pound @ 24" in the last four inches? Pretty respectable "no set", and weight goal setting.

cool looking bow, too 

[leonwood]

You dropped weight to get 28".  He just drew his farther.

Exactly, just tillered it to 24 and thought it waa good enough to go to fulldraw from there. Will start shooting it in now and finish it at 50@28

Only lost half a pound @ 24" in the last four inches? Pretty respectable "no set", and weight goal setting.

cool looking bow, too 

I deflexed the handle and heat treated it so I think that has something to do with the low set. And shot only about 50 arrows throught it by now, still the same at 24 though.

[Badger]

   Leon, that looked like a good test, you did a very good job on that bow! That is only a very small loss. I appreciate you doing this!

 I am hoping to keep this thread going for a while and get more guys to feed in some numbers. Don't be embarrassed if you don''t match Leons numbers. I would be tickled pink to get numbers like that. We need the good bad and the ugly here, it helps all of us.