Installing Great Planes Faslinks By James Goss      I guess we have all used Great Planes Faslinks or other brands that are similar to them. They are about the fastest way I know to connect pushrods to control horns or servo arms and are very reliable. Out of the hundreds I have used I can only remember about two that actually came off during flight. I like the Faslinks better than z-bends because they have less slop and are easy to remove for servo service if needed. Thinking back about the two Faslinks that came off during flight, it may have been the way I installed them. I now know there is a right way and a wrong way for their installation. There are two possible ways to install these links based on how you install the pushrods. You will install the 90-degree bend in the pushrod either from the top of the servo arm or from the bottom of the arm. This will allow the slot in the link to be facing up or down. The links will work either way but one way the link is in danger of coming off. While working in the shop the other day I was installing a flight pack and was checking everything out when I noticed one of the Faslinks popped off the servo arm. What had happened was the servo arm where I had removed one side of the arm to make it a single arm had a small hump that didn't get removed when I cut the arm off. When the link was traveling toward the servo arm at the max range of travel, the hump pressed against the Faslink and popped the link off. I could see that if I had rotated the pushrod 180 degrees in from the other side of the arm, the hump would have pressed the link toward the pushrod instead of away from it. This is so simple I have over looked it for years. The next time you install links to your servo arms you can check this out, there is a right and wrong way to install them. If you can stay away from using the maximum range of travel you will be better off, but in come cases you need all the travel you can get, so be careful.