Horizontal Stabilizer – 4

As I wrote in an earlier post, I wasn’t happy with how the horizontal stabilizer was coming along. I decided to re-order some parts and start again. I ended ordering one skin, front spars, doubler, front ribs and three main ribs. Shipping ended being the expensive part, but to be honest it was a good idea.

It took me a couple of weeks to get back to where I was when I decided to stop, but once I got all the parts prepared and primed it was actually pretty straight forward.

Learning to use the rivet gun is what takes the longest. I feel confident now that I can get decent results with it. There are a couple of things that I feel can be better, but the overall assembly came up good.

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Horizontal Stabilizer -3

After assembling and match drilling everything the steps called for dimpling the ribs and skins. I decided to use the main squezer to dimple the ribs in the same way we did back in December when we attendend the Synergy Air class. It was actually pretty straight foward and the results were as expected.

Once I started to dimple the skins, I was getting less than ideal results. After reading the DRDT-2 manual a couple more times, and running some searches on VAF, I came to the conclusion that I had the wrong setup. My holes were under dimpled, adding a little bit of pre-load fixed the issue. After re-dimpling the holes the results were pretty good and consistent.

Machine countersinking the spars and doublers was pretty easy. Just a matter of seting the stops to the right depth, and slowly making my way through every hole. I’ll probably need to add an extra battery for my drill or get anoter one.

 

 

Horizontal Stabilizer – 2

After looking at VAF Classifieds for weeks I found two of the tools that I considered a must have: DRDT-2 and Main Squeeze model 22. The first one required a quick trip to Middland, TX, and was quite an adventure to take it to Dallas. The second one was a cool find that a gentleman was selling in South Texas. For everything else I needed to start I gave the awesome people at cleaveland aircraft tools a call, and they customized a kit for me. At the end I basically got everything they offer in their get me started kit, plus some aditions and substitutions I deemed appropiate after taking the fundamentals class at synergyair.

Because I took the time to prepare the ribs, spars, doublers and also build the shims and angles I needed I was ready to start assembling the horizontal stabilizer. The first steps of instructions went pretty fast.  I match drilled the structure, and now I’m at the point in which I need to disasamble, debur and get ready to match drill the skins.