Stack help please :)

[bownarra]

Can't get my lam stack calculator to work until I pay microsoft some money....:0
Can anybody give me some numbers for the new stack please.
Original stack -  0.286" - 42#
Looking for 49# off the form on this one.
Thanks in advance.

[Crooked Stic]

42/49 = 1.16 cu. = 1.05 x .286 = .300
I also have used the stack calc.  Most times they a right on or a couple thousands difference.

[bownarra]

Many thanks for that .300" it is.
Just off to grind that last parallel lam to get the stack dead on.
Will post some pics when I get her done

[Mad Max]

42/49 = 1.16 cu. = 1.05 x .286 = .300
I also have used the stack calc.  Most times they a right on or a couple thousands difference.

X2

[Jeff Freeman]

😲🤔 stack calculator. Didn't know there was such a thing. JF

[Mad Max]

[Roy from Pa]

😲🤔 stack calculator. Didn't know there was such a thing. JF

Yup that's what ole KennyM uses. Ya didn't thunk he wuz dat smart did ya?

LOL

[Appalachian Hillbilly]

Ughh...Ugh... I missed something...

The additional data in the bottom of that chart says that increasing riser length will increase bow weight....
That is backwards...

[bownarra]

Not really...you are shortening the working limb.

[bownarra]

She is in the hotbox now

[Longcruise]

Ughh...Ugh... I missed something...

The additional data in the bottom of that chart says that increasing riser length will increase bow weight....
That is backwards...

????

I think it's correct.  It’s the equivalent of shortening the limb. 

[Appalachian Hillbilly]

Ok, as long as bow over all length stays the same? I know for a fact on take down bows that longer risers of bows with same limb length makes weight less and vice versa.

My medium limbs on my 25" riser pull 30 lbs.
On my 17" riser, they are 38 lbs.

I guess "all other things being equal, refers to over all length".  I took it the other way, all other things being equal such as limb length being equal...

[Jeff Freeman]

So does this stack calculator work for longbows also. I like to keep my fade outs about no less than 1.090
My original stack .430    original pounds of 42 desired weight 45 lb what would it be?  Math was never my favorite subject. JF

[Mad Max]

So does this stack calculator work for longbows also. I like to keep my fade outs about no less than 1.090
My original stack .430    original pounds of 42 desired weight 45 lb what would it be?  Math was never my favorite subject. JF

.440
This is for glass bows only I think, R/D and long bows, seems to work on recurves too.

[Mad Max]

If you have Microsoft excel
I think all I have to do is copy it and send it to a email, and you open in Excel

If anybody want's it?

BJansen is a member here and he sends it out to us

[Jeff Freeman]

.440 is what I used and it will end up 45# I'm almost there now.
 Mine was just a guess going off my records from previous longbows built. JF

[Mad Max]

Here is more Info he gave me

1/4" narrower limbs = 14% loss in weight--55lb x 14%=7.7lb

I went from 1-3/4" wide to 1-1/2" wide on a recurve and got 8.5#--55# to 46.5#    

[kennym]

Ole kennym don't even know how to excel at Microsoft...

[Jeff Freeman]

Ole kennym don't even know how to excel at Microsoft... me neither

[Roy from Pa]

Ole kennym don't even know how to excel at Microsoft...

Me nitter:)