Daily Archives: May 10, 2015

Wings 40 (2.0 hrs)

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In this session I worked to finish the bell crank routing. I received my new conduit so I added that to the mix. In the first photo you can see I decided on an amalgamation of the ideas I had previously toyed with. I have complete clearance of all tubes regardless of the orientation of the bell crank. This includes two areas at the extremes of bell crank movement indicated with the arrows. 

As you can see there is clearance on both ends.  

I created two brackets that will affix where the bell crank mounts to the spar. One for the green tube and one for the conduit. I used an adel clamp for the blue tubing.      

It might look convoluted, but there is very little stress on any of the tubing… gentle turns. And more importantly there is absolutely no interference with the bell crank under any circumstance. Its important to note that the travel of the bell crank will not be a large when connected to the ailerons, and so I have even more clearance than shown here.

Fuel Tanks 34 (3.0 hrs)

This entry was posted in Fuel Tanks Wings on by

Today it was time to actually fix the leaks. Before I put proseal inside I wanted to do all the sanding and drilling. This way I could clean up the debris before any wet proseal entered the equation.

  

 

 

Here is the first repair. This is in the first section that houses the flop tube and actually isn’t leaking. I wanted to make sure that the leak which is close to the rib on the other side wasn’t coming from this side. 

This is the other side of that rib. Yes, its a mess. But its darn hard to work inside a small 4 inch access hole. The best technique I found was to use a syringe to apply a bead and then popsicle sticks to produce a fillet. 

Here is the third and final section for repair. 

Here is how I applied proseal to the wire.   

I also applied a filet of proseal to the outside of the baffle. I know this isn’t the best, but I figured why not. My last task for the day was to flip the tanks baffle down. Proseal, while thick, does follow gravity. Hopefully the proseal will sit over the next week and fully seal those leaks up! I will close the tanks after I make a final inspection. I may need to add more proseal if anything looks out of sorts. I do not intend to do this for a second time!