Did a decent stint yesterday, 8 hours.
I cut out the holes in the flaps and ailerons for the mass balance arms.
As you can see from the photos the factory marked hole was a little too large on the flaps, the ailerons were spot on.
The Dremel made light work of cutting the holes, which I left about 2mm small and fine tuned with a file till the arm was a neat fit.
The arms have to have a slot cut in the honeycomb. This is filled with micro when getting bonded into the control surface inner later on.
I also cut down the lead weights for each mass balance. 4 in all. Bit of a slow and messy job - took me a while to get a feel for how much to take off. Anyway got there in the end and they are both within a gram or two of each other - I have left them at the heavy end of the tolerance for the time being until figuring out exactly what they need to be later on. (easier to take weight off than put it on).
I also cut out the rudder where the hinges will go and spent some more time on the tailplane with fitting the bearings for the elevators - more on that job later.
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| Factory markings for hole in flap |
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| My markings- less width same depth |
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| The mighty Dremel is built for such a job |
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| Arm fits pretty good. |
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| Inside - where the slot will be bonded with micro |
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| Inside |
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| Mass balance weights for Flaps and Ailerons |
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| Mass balance arms cut to length and slots made in end |
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| Rudder with slots cut out for hinges. |
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