[-] weissbinder@feddit.org 3 points 2 days ago

Even the expensive dongles buzz constantly.

[-] weissbinder@feddit.org 1 points 3 days ago

Wie versauen die Schokolade?

[-] weissbinder@feddit.org 11 points 4 days ago

In my experience, that concern is way outdated.

11
submitted 1 week ago* (last edited 1 week ago) by weissbinder@feddit.org to c/archery@lemmy.world

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?

[-] weissbinder@feddit.org 2 points 2 weeks ago

Too bad there wasn't some sort of conclusion

weissbinder

joined 2 weeks ago