substitute for Spruce/Douglas Fir

[K-Rigg]

I trying to find a substitute for Spruce/Douglas fir for a wood i can find in my area.

This is for the spars on a kr2, and I'm thinking Walnut is my choice of wood.

Will this work, be safe? Of course ill make sure the wood is perfect.

Tree Species​

Average Specific Gravity, Oven Dry Sample (0-1.0)
Static Bending Modulus of Elasticity (E) 10^6 psi
Impact Bending, Height of Drop Causing Failure inches
Compress. Parallel to Grain, Max Crushing Strength psi
Compress. Perpen. to Grain, Fiber Stress at Prop. Limit psi
Shear Parallel to Grain, Max Shear Strength psi​

Spruce, Sitka

0.40
1.57
25
5,610
580
1,150​

Douglas-fir, Interior West

0.50
1.83
32
7,430
760
1,290​

Ash, White

0.60
1.74
43
7,410
1,160
1,910​

Oak, White

0.68
1.78
37
7,440
1,070
2,000​

Walnut, Black

0.55
1.68
34
7,580
1,010
1,370​

Cherry, Black

0.50
1.49
29
7,110
690
1,700​

 

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