Turbines are nice, but I would have liked to go nuts on more piping. Speaking of more piping. This is the piping on the J-58 that powered the SR-71. What an engine that was!
Over our vacation we visited the Evergreen Air and Space Museum in McMinnville, Oregon. A wonderful museum (actually 2 museums) out in the middle of the Willamette Valley south of Portland, OR. It's also the permanent home of Howard Hughes' monster plywood aircraft, the Spruce Goose. They have an SR-71 and one of its J-58s out in front on a stand. The image is a composite of a whole bunch. I dare anyone to super detail that piping! I amd not going to do that!
I got the tail rotor assembled. It's a challenge. Very engineered—to a fault. The hub assemble with the pitch rods is exceptionally unstable, although it got better when the blades went in a captivated the pitch rods.
was met with a sprue problem where the feeders were either broken or not fully formed. This led to one of the shorter ones being badly bent and almost broken before I even got to it.
The pitch rods didn't line up with the tiny pins on the blade arms. To glue them I clipped the pins so the misalignment didn't affect gluing. That's a really fine Swiss tweezers for scale.
The two sets of blades glued to the arm extensions on the hub. The tiny pins to which they align are assymetrical and it won't fit well if you get them reversed. I needed all my Opti-vior's magnifying power to make sure I was attaching to the correct pins. The imagae points this out.
I'm not puttint the blade assembly on until near the end.
I have a decision to make. I'm not sure my friend has the display location to have the ship with the blades extended. However, the folded blade scheme means not installing the Long Bow antenna, which is such an iconic aspect of this Apache version. And there's the terrible fragibility of the blade support rack. I decided to attempt to build the rack. If it comes out okay, then I'll do the folded blade version. If it's too frail to actually do the job, I will go with open blades and let my friend figure out where he's going to put it.
These two pictures show just how invoved this rack it. And here I thought the Seahawk's support rack was complex. The difference is the Seahawks blades are stowed all the time and are hudraulically actuated, whereas the Apache's are folded manually and only done when the ship is being air-lifted on a C-17 or its ilk. When folded the Long Bow antenna is removed and the extendable rotor shaft is retracted.
Assembly started with the parts that wrap around the fuselage. There's a lot of little and excessive PE, but I'm attempting to use it.
After adding the PE to the individual pieces I had to install these connecting post between the two sides. After fussing with them trying to make them stay still while fitting those tiny rods, I went to my old standby PanaVise to hold at least one part still. This worked okay. They have to cure overnight since it's a very fragile assembly. Still dubious about its strength to hold the blades for the trip back East.
I got the group done and will be ready for the next steps tomorrow. With these assemblies I have to overcome my desire to keep moving and let them really dry. Otherwise, I'm repairing more than building.
Here are the two sets. My method of holding PE is to use gel CA which can be applied in very tiny quantities and it stays put and does not cure. Then after the PE is in place I just get the accelerator near the joint to cure it. For the tiniest part I put the CA on the plastic and dipped the part (held in a tweezers) in the accelerator. It cures almost as soon as I get the part in place. No room for adjustment in the latter method.
Until next time...