AcrodusterComments Off on And a happy new year to you and yours!
With all the good times behind us, it’s time to start work again. Santa was kind enough to bring me a handful of drills in all sizes from 1-2 mm. So it’s time to start drilling and tapping holes again. Officially I should drill a 1.6 mm hole for a 2 mm tap, but I find that in stainless steel that is too small. Drilling 1.7 mm works just great. And since there is not really a heavy load on the bolts, it all should work.
Adding the little tabs is a lot of work, if I prepare a whole row it is easier to solder, but takes a lot of time to prepare. Making them individual takes less time to make, but is more difficult to solder. Ah well, it’s all part of the fun. I think this part of the build is the most challenging so far.
..many times you have to make parts before the other parts that need to go on before the parts that you need to fit to get the job done. This was one of them. Needed to make more hinges. Not difficult, just fiddly, and a bit dodgy, since I try to cut them on the lathe, with a dodgy china cutting wheel going full speed. However, hats of to the china-folk, I have not had a single one fail on me. So far I have used approx 20 odd discs on this project.
After checking the tail, I noticed the main spar was bend. This appears to be almost inevitable when you heat bits. I decided to simply cut the middle, and add a sleeve. Problem sorted. My metal working skills don’t go so far that I can predict how much distortion I will get. Of course I could make very expensive, very heavy jigs. yup, I could..
A bit of a showoff.. Starting to look like it wants to fly!
Just one more weighing session. 1569 grams as seen here. Good stuff!
And I am calling it a day. All in all it does not seem much, but I am happy with it! The section above weighs 300 gram. As a comparison: the ”light” elevator from my 2.5 meter Extra weighs also 600 grams. Ok, there’s 2 servo’s included in that figure, but still..
Finished the rest of the elevators today, another milestone reached! Also bolted the motor back on to get a feel for the CG. At the moment I am still slightly nose-heavy, so things are good! I don’t expect to have to add any of the grey gravity stuff.
The rear stabilizer mount consists of a single bolt, as per original, the front is made up of a few gussets. I probably simplify that part. Not sure how, but simpler as original. (too many small bits that fall apart when you heat things up, is the main reason)
AcrodusterComments Off on Lets make some tail bits.
The plans call for square tube at a few locations. I don’t think it will be a problem to use round tubing. As usual, use what you got! I also don’t think I have enough space for the 2 central bearings, another fudge expected there.
My template has a more rounded outline at the outer elevator. Might have to redo it, since the big one has a smaller radius.