Modified tools

Discussion for Sonex builders on specific plans page experience. These posts are limited to technical suggestions such as assembly order, challenges, or techniques related to specific plans pages.

Modified tools

Postby lstinthot » Tue Aug 30, 2016 9:42 pm

We have been working on the main spars for the wings and have come accross some challenging rivets. Either the driving side is not very accessable or the bucking bar is not able to get in to buck the rivets. We created a couple of tools to help get the job done.

Side-picture-of-bucking-bar.jpg
Here is a modified bucking bar. This allows us to get in tight spot between the upper stiffener and spar cap.


Modified-end-in-gap.jpg
Here the modified end it in the gap and we still maintain about 1/2inch as a bucking surface.


Thick-end-in-gap.jpg
Here we have enough room for the thick end.


Rivet-driver.jpg
Here we modified the rivet tool to not be pushed by the spar caps. We tried the bent type tools and they kept slipping off and leaving smiley faces. These worked really good.
Rivet-driver.jpg (8.91 KiB) Viewed 1660 times


Make-a-thick-rivet.jpg
If you make a hole a little oversized, here is a possible solution. We pre-squeezed the rivet. Makes it about .003" fatter. Fills the oversized hole nicely. Then drive it normally.
Make-a-thick-rivet.jpg (9.67 KiB) Viewed 1660 times
Scratch building #1604
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