Author Topic: Hickory bow build.  (Read 14978 times)

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Offline superdav95

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Re: Hickory bow build.
« Reply #135 on: March 13, 2023, 07:02:26 pm »
Looking good Dave . How was it to string?

Thanks Arvin!  Itís not too bad to string now.  I had to make a new stringer  for it as itís still maintaining 10Ē of reflex which is surprising.  Iíll send the stringer with the bow. 
Sticks and stones and other poky stabby things.

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Offline superdav95

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Re: Hickory bow build.
« Reply #136 on: March 13, 2023, 07:04:52 pm »
Looking good Dave . How was it to string?


You got a scary part done.

I still always pucker a little first brace and that one would have a higher pucker factor

Bjrogg

Thatís for sure bj.  Iím glad itís braced and bending now.  Little stiff in spots but Iíve been up to my neck dealing with maple syrup that I can only do little here and there. 
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Offline superdav95

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Re: Hickory bow build.
« Reply #137 on: March 13, 2023, 07:18:21 pm »
Hereís a quick little update on the bending of this bow.  Bend doesnít look too bad but still need to work it out a bit to be the bend that Iím looking for.   Little more inner bend on the top (right) limb I think from looks of things.  Iíll do a another 20-30 pulls to 23-24Ē and see how it looks tomorrow.  Iím neck deep in sap to boil right now so if I get another chance tonight to bend it a bit more tonight.  Hereís a short video clip of preliminary bending to 23-24Ē.  Itís at about 41-42lbs so far.  Thanks for looking and following along on this adventure of pushing the extremes.

 Also to my surprise I have kept 10Ē immediately after stringing and pulling for a while maybe an hour or so while I run back and forth to boiling sap!   After about 10-15mims it creeps back to just under 11Ē reflex!  We shall see if this translates into performance or not. 

Vid clip
https://photos.app.goo.gl/NTgGNBJpgtBaD8Q59

Sticks and stones and other poky stabby things.

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Offline superdav95

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Re: Hickory bow build.
« Reply #138 on: March 13, 2023, 07:33:43 pm »
Few more picsÖ I made the grip little smaller too.  Cheers
Sticks and stones and other poky stabby things.

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Offline PaSteve

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Re: Hickory bow build.
« Reply #139 on: March 13, 2023, 07:40:01 pm »
Very impressive build, Dave. Waiting patiently for the chrono results.
"It seems so much more obvious with bows than with other matters, that we are the guardians of the prize we seek." Dean Torges

Offline Will B

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Re: Hickory bow build.
« Reply #140 on: March 13, 2023, 08:24:33 pm »
What PaSteve said. Looks really good on the tree. Good luck with it the rest of the way. Thanks for the photos and video.

Offline Phillip King

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Re: Hickory bow build.
« Reply #141 on: March 13, 2023, 09:03:16 pm »
 8) )W( :BB )P( :-D Very Nice

Offline IdahoMatt

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Re: Hickory bow build.
« Reply #142 on: March 13, 2023, 09:52:51 pm »
Wow. Quite the extremes indeed.  Very fun to watch. Thanks for taking us along.

Offline superdav95

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Re: Hickory bow build.
« Reply #143 on: March 15, 2023, 05:09:39 pm »
Good new and bad news on this build.   The good news is that it didnít explode!  The bad news itís not stable.    I got to 40lbs at 25Ē draw today after about 50 pulls.  And slowly developed a start of a hinge on the outer of the top limb.  Tried to even it out and carefully scrape strategically to balance the limbs out.   Got it looking good at 27Ē-28Ē at 44 lbs on the tree.  Went out and put few dozen shots through it and it shot ok.  Not at all what I was hoping for with the reflex I worked into this bow.  I fired 400 grain arrows and was drawing it to 28Ē and seemed to get warmed up and shoot little better.  If I were to guess around 170-180fps.  Nothing spectacular but decent.    Upon inspecting the bow I noticed the top limb inners start to bend out of balance.  Not a hinge per se but a pronounced bend on the inners compared to The bottom limb. After leaving it rest at brace it balanced out again and looked ok.   Hereís what I think happenedÖ.  I had purposely left lots of belly wood to tiller down after the sinew in hopes to not stress the belly fibers for enhanced performance to balance with the sinew.  This would normally have been fine but I was getting so thin trying to get within the 45-48lbs window that I ended up with the sinew doing the bulk of the work which is not stable.  Every time I unstrung the bow to rest it and restrung it there seemed to be some corrections that needed to be made to balance.  I realize that this is the nature of sinew and that it needs to be ďwarmed upĒ so to speak and work the limbs and physical balancing that needs to occur but even after an hour of this and getting it balanced eventually it was not as stable as I hoped.  It shot well though and true just not stable enough to send out this way.  The sinew is doing the bulk of the work and pretty amazing really that it comes right back to 10-11Ē reflex almost right away after shooting.  Itís pretty much a sinew bow with a little wood added in it current state.  I would have been better off to leave this heavy at say 60-65lbs draw for a well behaved bow.  Too much sinew in relation to the dense heat treated wood.   

So hereís my options as far as I see it. 

1.  put a horn belly lam on the bow to add some stability

2.  Add a boo lamination on belly. 

3.  Leave it the way it is at 40lbs at 27Ē for mediocre performance. 

4.  Call it a failure and move on.

What do you guys think???

You can see from the pics how thin the wood got in relation to the sinew.   
« Last Edit: March 15, 2023, 06:52:56 pm by superdav95 »
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Offline Buckskinner

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Re: Hickory bow build.
« Reply #144 on: March 16, 2023, 08:19:45 am »
Well I can't give you advise in how to fix it but can say option 4 is out of the question, that is no failure!

Offline superdav95

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Re: Hickory bow build.
« Reply #145 on: March 16, 2023, 09:42:28 am »
Thankyou buck skinner!   
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Offline bjrogg

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Re: Hickory bow build.
« Reply #146 on: March 16, 2023, 10:08:43 am »
Dave as I was reading about your problem I was thinking all the while this would be a good candidate for horn.

Iím going to vote for #1 not that I have any experience with it but I think it would work.

I was watching how thin your wood was getting in the latter stages of this build. I think you are right it would probably have made a good 55 or 60 lb bow

Bjrogg

PS of course I know that is by far the most work and I hope that they donít move this one to the horn bow section
« Last Edit: March 16, 2023, 10:21:56 am by bjrogg »
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Offline Selfbowman

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Re: Hickory bow build.
« Reply #147 on: March 16, 2023, 11:07:56 am »
What does the bow weigh right now? Iím curious.
Well I'll say!!  Osage is king!!

Offline Selfbowman

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Re: Hickory bow build.
« Reply #148 on: March 16, 2023, 11:11:43 am »
Shoot it thru the crono. For giggles
Well I'll say!!  Osage is king!!

Offline Selfbowman

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Re: Hickory bow build.
« Reply #149 on: March 16, 2023, 11:12:52 am »
Will the bow go 29Ē?
Well I'll say!!  Osage is king!!