4 more tips to keep costs down and speed your building.
1. Making control horns from Beechwood Tongue depressors
2. making control horns from an old CD
3 Making linkage stoppers for less than £0.60 each.
4. Making larger wheels with polythene pipe tyre.
Although the tongue depressors are a single layer they appear to be strong enough to withstand the rigours of flying, (up to now anyway). The CD version is stronger but harder to cut out. I generally us a jewellers saw that has a very fine blade. This is a good tool to have for cutting all sorts of material from steel to foam board.
The linkage stoppers work well. The stud diameter is 3 mm so rather than fit into the servo control horn. I fit them at the other end of the control wire in the elevator control horn.
I have also cut off the 3mm stud and replaced with a 2.5 mm bolt soldered to the bottom. This is about the largest you can get through a servo control horn. I fit nylock shake proof nuts to prevent them coming loose and it allows me to leave a little play so the linkage stopper can rotate in the control horn.
The wheels are easy to make in any size and light. the plastic pipe protects the foam boad. If you want a black tyre use some electrical cable glued to the foam wheel.
The modification below allows you to use the linkage stopper without having to drill a larger hole in either control horn. The wire is a large paper clip.
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