weissbinder

joined 2 weeks ago
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rule in c/[email protected]
[–] [email protected] 3 points 2 days ago (1 children)

Even the expensive dongles buzz constantly.

ich🍫🌰iel in c/[email protected]
[–] [email protected] 1 points 3 days ago (1 children)

Wie versauen die Schokolade?

My Self Hosting Journey in c/[email protected]
[–] [email protected] 11 points 4 days ago

In my experience, that concern is way outdated.

11
How to calculate spine values (feddit.org)
submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]
1 comments fedilink
 

I want to build myself a spine tester to calculate the spine value of arrow shafts using the ASTM F2031 standard. I do know that I need a 880 gram weight and that I have to measure the amount of flex that the shaft produces when I hang said weight at the center of a 28 inch span off the shaft.

Well, but what then? I can measure the amount of deflection I have then but let's say the shaft is deflected by 1/12th of an inch or some millimetres. How do I calculate a spine value that ranges between 20 to 80 from that?

Can anybody give me a hint or solution?

Kramer made a REALLY long bow. in c/[email protected]
[–] [email protected] 2 points 2 weeks ago (1 children)

Too bad there wasn't some sort of conclusion