I've been building and tinkering all day with the F22. I started by mounting the motor into the plywood motor pod, then connected the ESC and checked the rotational direction. I then discovered I don't have a suitable 9" prop to fit the shaft on the Sunnysky, so have had to compromise with an 8x6 APC (which will do the trick, the Mk1 only had a 7x5).
Then I started on the servo installation, pushrods and installation of the control horns. I went for a thinner gauge wire than the Mk1, but used coffee stirrers/sipping straws as guides to add support. I also decided not to use the conventional plywood control horns, trouble is the push fit ones cause the foamboard to crush and weaken. So I had a brainwave, I cut some small plastic rectangles and put slots in them. I then glued them to each side of the foamboard directly over the slot for the control horns. Then when I push the retaining plate on there is no crushing of the foam and it provides extra rigidity.
So control surfaces are now fully operational and seem to be functioning a lot better than the ones I fitted to the Mk1.
Initially I set up a Radiomaster receiver on the F22, but I was having doubts after my mate mentioned some of them have now had support withdrawn and are no longer being sold.
So I took the Spektrum AR410 from my Tiny trainer Mk5 (which I recently finished) and put it into the F22. The Radiomaster receiver is now in the Tiny trainer. However, I didn't need to bother after all. It appears the problem with the Radiomaster receivers is a copywrite issue, not a functional issue
, so that wasted 20 minutes of my life for nothing.
Next job tonight is gap and hole filling where I pegged the control surface hinges. Hopefully I can progress tomorrow onto painting and getting it finished, I am excited to see how it performs with the modifications and upgraded motor prop.
