Author Topic: Elderberry hld, 60@28  (Read 10999 times)

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Offline leonwood

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Re: Elderberry hld, 60@28
« Reply #30 on: October 26, 2017, 09:48:22 am »
Thanks for even more compliments guys!


very very nice bow. I like all of it

I got a 2014 elderberry stave around 3''
the only problem is it has too reflex
I wanted to bend it at handle without sacrifying depth (carved handle not glued up)
what method do you suggest? Is 3" too much for dry heat?

In this case I would steam the handle for 45 minutes and bend over a log or something. You could make a nice reflex/deflex out of it! I am going to try this as well with some reflexed pieces since these are really easy to find.

Offline GlisGlis

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Re: Elderberry hld, 60@28
« Reply #31 on: October 27, 2017, 02:36:47 am »
In this case I would steam the handle for 45 minutes and bend over a log or something. You could make a nice reflex/deflex out of it! .

Ty. I'll try this way  :OK

Offline AniKituahBowyer

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Re: Elderberry hld, 60@28
« Reply #32 on: December 01, 2017, 01:04:15 pm »
Yep. Fantastic bow! Got my BOM vote! Great work!

Offline leonwood

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Re: Elderberry hld, 60@28
« Reply #33 on: December 02, 2017, 02:49:26 pm »
Thank you!

Offline vinemaplebows

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Re: Elderberry hld, 60@28
« Reply #34 on: December 03, 2017, 11:36:18 am »
Very nice!
Debating is an intellectual exchange of differing views...with no winners.

Offline dragonman

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Re: Elderberry hld, 60@28
« Reply #35 on: December 05, 2017, 08:40:11 am »
nice work, beautifull bow....in uk in the old days, elder was considered one of the most magical woods....fairie wood !!!
'expansion and compression'.. the secret of life is to balance these two opposing forces.......

Offline wizardgoat

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Re: Elderberry hld, 60@28
« Reply #36 on: December 06, 2017, 11:24:12 am »
Clean and crisp as usual, great looking bow Leon

Offline leonwood

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Re: Elderberry hld, 60@28
« Reply #37 on: December 06, 2017, 12:49:11 pm »
Thanks guys!

Offline joachimM

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Re: Elderberry hld, 60@28
« Reply #38 on: December 07, 2017, 06:49:12 am »
Leon,
What's the bow mass? I wonder with these HLDs if there's any physical advantage to the design, perhaps reduced mass for the same bow length, draw length and poundage?

Joachim
Take a bow, shoot far, aim high

Offline leonwood

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Re: Elderberry hld, 60@28
« Reply #39 on: December 07, 2017, 08:42:43 am »
Leon,
What's the bow mass? I wonder with these HLDs if there's any physical advantage to the design, perhaps reduced mass for the same bow length, draw length and poundage?

Joachim

Will check that when I have a new scale, my old one died and the smaller one I use for my arrows doesn't go beyond 200 grams or something.
But I assume you read Simson's thread about HLD?
Anyways, I guess that one of the main reasons this design works so well is that the hollowing out reduces mass a lot without losing to much draw weight (compared to a flat belly)
The other reason I think (and this is al speculation) is that the hollow belly essentially creates more area to withstand the compression forces, thereby reducing the chance of taking too much set. I have done six HLD bows so far and they are all my best performers.


Offline dantolin

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Re: Elderberry hld, 60@28
« Reply #40 on: December 08, 2017, 06:21:40 am »
A beauty, man, and a beast too :D Congratulations!!!

Offline BowEd

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Re: Elderberry hld, 60@28
« Reply #41 on: December 08, 2017, 11:29:31 am »
Congratulations on the well deserved win Leon.That's a very nice bow.
BowEd
You got to stand for something or you'll fall for anything.
Ed

Offline joachimM

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Re: Elderberry hld, 60@28
« Reply #42 on: December 08, 2017, 12:59:27 pm »
Don't see how I missed Simson's article in PA magazine!
Anyway, I'll read it carefully.

I know a guy who used to make PVC bows with a HLD design too, they were also faster than regular PVC bows, likely due to mass savings.
Take a bow, shoot far, aim high

Offline DC

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Re: Elderberry hld, 60@28
« Reply #43 on: December 08, 2017, 01:21:38 pm »
[quote author=leonwood link=topic=61803.msg869222#msg869222 The other reason I think (and this is al speculation) is that the hollow belly essentially creates more area to withstand the compression forces,
[/quote]

This is something that I can't get my head around. It seems to me that it would concentrate the compression on to the edge rather than all around. Their seems to be enough evidence that it does work so if someone could explain it to me I would be forever grateful. I have read Simons website. :D

Offline joachimM

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Re: Elderberry hld, 60@28
« Reply #44 on: December 09, 2017, 02:25:22 am »
I have made a bunch of PVC bows as a kind of bow-making experiments and testing design principles in a more easy way than with wood, taking things to extremes.
As a result of this, theses bows very often failed at some point. When doing a post-mortem analysis, and cutting up the pipes, I could see that the most bending portions, which took the most strain, were often fretted all along the inside of the pipe's back along the entire hollow area (which is similar to the concave belly of the HLD bows).

So maybe the HLD is indeed a way to divide the stress over a broader belly area, even curved.
Take a bow, shoot far, aim high