We dropped the Arcticopter 1 a bit heavy on the grass and popped off the landing gear. The threads on the nylon standoffs sheared off, incidentally losing the still-attached lock nuts in the grass. (update: kit now comes with aluminum risers!)
Fortunately this is easy to repair if you've got the right parts on hand. We've got a bag of 1/2 inch risers with 8-32 threads. We bought them on Amazon. They were out of the 2 inch risers, but we hoped that we could just screw 4 1/2 inch pieces together. Update: the original kit used 4-40 threads, so we got a bag of those. 4-40 seems to work pretty well.
I was worried that several pieces screwed together would flex and be weaker than the 2 inch riser we were replacing. Fortunately, they seem to be just as strong when screwed together tightly. Update: screwing the pieces together works well. In addition, if you break a thread off, you can reuse it as the "nut" for the replacement piece. Since these tend to disappear into the grass on crashes, it's a very nice arrangement.
I picked up some replacement lock screws from Ace, and swapped out the lovely stainless steel screws with plain old machine screws. I did this mainly to replace the hex head with a phillips head, so the unit could be disassembled with a plain screwdriver.
Sorry about the nylon risers. They are replaced with aluminum in the latest release of the frame. Too much trouble with them breaking to justify the weight savings. Thanks!
ReplyDelete