I ask because if you have a yew bow that is at least close to that long, and with an acceptable amount of set, then you can do this to get a darn near perfect idea of how to procede
Measure the yew bows working ( bending ) length
Measure your new bows working length.
Make a ratio of working length between the yew bow and this new bow.
Add 1/4 inch of width to the measurment of width on the yew bow for every inch of set. ( This number is what i use for osage, perhaps yew guys have a better sugestion )
Then, say your bow you are using for measurements has 2 inches of set.
Add 1/4 for every inch of set it took, so, 1/2 inches added.
Now, assume 28 inches of working length on the yew bow, ans 17 on this new one. Thats a ratio of 1.647:1
Now multiply that 1.647 by the width of the yew bow PLUS the adhustment for its set
That andwer is how wide you sould make your new limbs and not be too wide for its draw weight.
This is important because width is what controls the draw weight. Too wide, waisted mass, slower more inefficient bow. Too narrow, set.