Sunday, July 8, 2012

Stabilator Components Machine Countersunk

Yesterday it was even hotter ... 100 degrees most of the day so needless to say, I did not use the Sanchem CC-6100 because once the part A and part B components are mixed there is virtually no shelf life just a few hours or so. I knew I did not want to be outside for a few hours straight in that heat, so decided to move on and prepare stabilator parts.

Because the heat and humidity was stifling, only made a couple one hour visits to the shop. But was able to cut the hinge brackets apart along with a few other parts that needed separating and deburred the lot of them.

Today it was much cooler, mid 80’s so ... could have used the Sanchem but figured since I started prepping stabilator parts may as well try to finish them up … or at least finish up the ones that make up the spar box.
                                          Rib clips, some of the many metal pieces that needed to be separated.
                                                                Separating the rib clips on the band saw.
                                              Deburring and smoothing the rib clips on the Scotch-brite wheel.

After the hinge brackets were separated and buffed smooth on the Scotch-brite wheel the plans call for finial drilling the holes in the four brackets to #12.
                                                       Final drilling a hinge bracket to #12 on the drill press.

Because quite a few pieces that make up the spar box have already been prepped, decided to attack the spar box components and stop there … figure that is a perfect place to stop for priming. All the spar box components require machine countersinking at various locations. There are two locations on each of the two HS-1211 pieces (which are the upper and lower spar box components) where you are to countersink for 3/32” rivets … yet between them, Van’s places a 1/8” countersunk rivet for no apparent reason. I feel this was done so a builder does not need a 3”yoke for the squeezer. After looking at photos from other builder sites and verifying that my squeezer fits, plans are to squeeze a solid flush 1/8” rivet in the place of the flush “pop” rivets. Therefore at those four locations, I will be deviating from the plans and the countersinking will be done with a #30 100 degree countersink bit so a solid flush rivet can be used in the place of the pop rivet.
                                            Holes to be countersunk in the HS-1211 spar component.
                                          Machine countersinking platenut holes in the the main spar.