Vertical Tail Main Spar Assembly
Posted: Wed Oct 18, 2023 4:15 pm
by BobDz
Working on my Main Spar Assembly.
I do not see torque values called out on the plan for the AN3 bolts. Using AC43.13-1B, Table 7-1, I come up with 12-15 inch pounds.
Is my thinking correct?
Thanks in advance.
Re: Vertical Tail Main Spar Assembly
Posted: Wed Oct 18, 2023 7:37 pm
by Bryan Cotton
Bob,
That sounds right. I used to have a torque table on my old phone that I downloaded from the Van’s forum. One thing to remember is to add the running torque to the recommended values for non-locking stuff. See:
https://vansairforce.net/community/show … hp?t=80363
Re: Vertical Tail Main Spar Assembly
Posted: Wed Oct 18, 2023 8:17 pm
by BobDz
Thanks Bryan
Re: Vertical Tail Main Spar Assembly
Posted: Thu Oct 19, 2023 3:42 pm
by Murray Parr
10-32 is fine thread series standard type nut. The torque table shows 20-25 inch pounds for those, just measure how much drag the nyloc adds and add that to the lower. I think the value you have is for shear type nuts.
Re: Vertical Tail Main Spar Assembly
Posted: Thu Oct 19, 2023 8:38 pm
by BobDz
Thanks Murray.i did catch my mistake before assembly .
Re: Vertical Tail Main Spar Assembly
Posted: Fri Oct 20, 2023 4:35 pm
by SonexYo
I’ve been using this chart.
-johan
Torque.png (58.15 KiB) Viewed 1141 times