I put my wings on the RV-14A project today. I searched the VAF forums and didn't find a satisfactory answer to my question (below).
The plans call out the larger bolts as NAS1309-58 close tolerance bolts. They use an AN365-918A elastic stop nut. I determined that this means that it is an AN9 bolt.
In the chart in section 5.20 it calls for 66.6 – 83.3 ft-lbs of torque. It does not specify why this is a range, it also does not specify if this includes the drag torque or not. I do not have an easy way to determine drag torque (I don’t own a dial torque wrench).
Similarly, the smaller four bolts are NAS1306-58 bolts. They use an AN365-624A elastic stop nut. I determined that this means they are AN6 bolts. The chart in section 5.20 calls for 13.3-15.8 ft-lbs of torque. Again, why is this a range and does it include drag torque?
I am interested in what other 14 builders have done and also anyone's opinion on the topic.
Having the wings properly attached is a high priority for me. I want to get his right.
Thanks!
Bruce
The plans call out the larger bolts as NAS1309-58 close tolerance bolts. They use an AN365-918A elastic stop nut. I determined that this means that it is an AN9 bolt.
In the chart in section 5.20 it calls for 66.6 – 83.3 ft-lbs of torque. It does not specify why this is a range, it also does not specify if this includes the drag torque or not. I do not have an easy way to determine drag torque (I don’t own a dial torque wrench).
Similarly, the smaller four bolts are NAS1306-58 bolts. They use an AN365-624A elastic stop nut. I determined that this means they are AN6 bolts. The chart in section 5.20 calls for 13.3-15.8 ft-lbs of torque. Again, why is this a range and does it include drag torque?
I am interested in what other 14 builders have done and also anyone's opinion on the topic.
Having the wings properly attached is a high priority for me. I want to get his right.
Thanks!
Bruce