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Ash ELB measurements?

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Bootthrower:
Hi!
I'd love to get some measurements for an ash ELB! I'm aiming for around 100#@32" but anything is appreciated..
I've honestly never made a bow before, so a hundred pound ELB might be a bit ambitious, but I'm very keen on trying!

I've cut down a european ash with a diameter of roughly 25cm and cut it into around 10 decent staves. I'm going to reduce them down into a more bow-like size so they dry quicker, but I'm unsure about what the finished measurements are going to be, so I'm too afraid to actually cut in them..

Thanks in advance!

WillS:
Ash varies a lot, so the same dimensions can give very different weights depending on the timber, but if you don't want to go down the route of doing bending tests / density tests and just jump in and get making I'd start with 38mm wide by 30mm deep in the handle.  You'll end up taking the depth down to around 26mm most likely, and usually I wouldn't personally suggest starting oversize and working down but ash needs to be tillered very well to support heavy weights so that gives you time and timber to tweak the tiller.

Don't fall into the trap of making it rectangular, ash does better with a round back and slightly round belly (but not as round as the common perception of Victorian English longbows) and you'll want to heat treat at around 20" and 30" as you tiller.  Again, that will vary depending on the quality of the timber but I'd start there.  With so many staves you can do a lot of learning on the first couple and start homing in on the best method for your timber as you proceed. 

As an example on the difference, I've got an old 115lb ash bow I just measured and it's 36.9mm wide and 29mm deep in the handle, but yet a 150lb ash bow that I made a few years ago was 38mm by 29mm deep.  The 150lb was made of the best ash I've ever come across however, I've still never found another tree quite like it.

FilipT:
Does ideal ash cross section resemble yew warbows / MR bows or is somewhere between squashed rectangle and them? I am also making tomorrow ash warbow so I ask for future reference.

Strichev:
I, too, wonder that the optimal cross section might be.

Anyway, to add some data for the OP; I've had an intentionally under-built, unfinished bow of around 100 pounds that measured 30x30 mm in the center with a perfectly rectangular cross section and only slightly rounded corners. It took no set but failed in tension around 29, 30 inches, I presume due to the corners on the back not being rounded enough and a botched heat-treatment that weakened the back.

Regarding the belly cross sections I think that the flatter the belly the more durable the bow and thus you should make it as flat as possible without having a terribly uncomfortable bow and (this is important, I think) creating abrupt transitions, "steps" in thickness taper due to the earlywood being soft/spongy. I've had this problem with my two rectangular ash bows.

On top of that they were ugly, the rectangles.

I think that the cross section should allow for easier thickness tapering and wood removal as well as a more comfortable grip. I plan to make my next bow fairly rounded - a bit less than your stereotypical MR bow.

Bootthrower:
Thanks for the wonderful tips and sorry for my late reply..
I'll be sure to test them out and see what works!

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