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Discussion Starter · #1 ·
I've been having trouble with some of my darts. I just found a 1/2" copper pipe in my garage, 5' long and cleaned it out and turned it into a blowgun. I made some darts using half of the normal skewers I usually use. Most of them flew straight, but a few of them would spiral like a football that has a spin but is "wobbling" in the air. Of the ones that worked, 3 of them would veer off course erratically after about 10m. What's going on?\

-C
 

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Did you make the darts yourself? if so I would look to see if how you attached them or hold them together is weighted heavy on one side.
 

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Discussion Starter · #5 ·
well I guess the cones could be weighing the back side down. Perhaps they are tail heavy?
 

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do you use the same size pieces to make them? though you might cut the cone down to the same size some cones may have more material than the other depending on how you wrap or tuck to make the cone. I am guessing the problem may be at one of the seams.

just a guess.

LGD
 

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Discussion Starter · #9 ·
they are each about 2.5in long strips of duct tape that I roll together. I'll try some stuff out tomorrow. As for now- SLEEP

..zzzzz....
 

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Roll your dart on the edge of a table with the cone hanging of the edge. Make sure there is no wobble. Like Aaronc said the forward weighting will offset the heavy duct cone giving the dart a different center o gravity.
 

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Discussion Starter · #13 ·
Good idea Treefork. I'm going to work on some more today, we will see how they turn out.
 

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Discussion Starter · #16 ·
That's what she said?

I dunno, what do you think Geo?

Anyway, I think I'll go with a packing tape cone on the next few darts to save some weight. Tests coming soon!
 

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A good way to forward weight is to wrap the tip of the bamboo 1 1/2 " from the tip with a fine flexible steel wire found in the flower section of the craft store. Wrap as desired keeping the coils tight for about 1 " total length. Finish with an epoxy coat. Now check out the difference. Heavy end has to go forward.
 

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The throwing dart guys have put a lot of thought into this. That is why they use a heavy metal in the front, and aluminum back by the fins. Now, our fins/flights (cones) aren't nearly as effective as those on a throwing dart since cones dont provide a great deal of directional stability. So, front mass can be even more important. Again, this is all IMO.
 

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Discussion Starter · #19 ·
So we figured out the wobble, but why the veering off of course after about 10m? It is very strange, they get to about 10m and then they take a 90 degree turn left or right
 
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