SpudFiles

dart guy wrote:Sorry i kinda ment that you should shape a block of lead like the fins and body like the aluminum then you should take the hardest metal you have and make that the actual dart.

You can not use lead for the fins and body due to the weight. Please research CG and CP for a better understanding of why!
Here is a simplified explanation for you:
http://www.rockets4schools.org/images/B ... bility.pdf

I cant read the pfd.

Then try this:

http://users.telenet.be/elvo/8/4_content.html

sorry but my mind doesnt work to well after being stung and biten by at least 7 angry hornets

Then don't get stung.

Gippeto wrote:Then don't get stung.

Haha! . Good advice.

hornets and not wearing glasses...yeah just dont assume that if you are using throwing knives, huge sticks, and rocks to throw at the side of a small shed and dont see an angry hornet mob around the target that it is safe to climb up the side

Sadly the darts did not live up to expectations.

taofledermaus wrote:Darts: shot- results
We shot the darts today. None of them worked. It seemed the fins were stripped off or broke off at the moment they left the barrel, so the rods just tumbled through the air. The 3 bolts that you made worked very well, and were pretty accurate. They flew perfectly straight, so it isn't all bad news.

I'm guessing that since they are only supported at the base, on acceleration the metal body skews to one side and these torsion forces are enough to break the fins. Back to the drawing board

Here we go, plan B - something very similar in design to a "proper" APFSDS round

Wow! That looks great!!

jackssmirkingrevenge wrote:Sadly the darts did not live up to expectations.

taofledermaus wrote:Darts: shot- results
We shot the darts today. None of them worked. It seemed the fins were stripped off or broke off at the moment they left the barrel, so the rods just tumbled through the air. The 3 bolts that you made worked very well, and were pretty accurate. They flew perfectly straight, so it isn't all bad news.

I'm guessing that since they are only supported at the base, on acceleration the metal body skews to one side and these torsion forces are enough to break the fins. Back to the drawing board

Was the barrel used making use of a choke or a slug barrel? Just a thought.
How are the fins attached? I am thinking the fin assembly seperated rather than breaking the fins.
Which ones were the bolts he referred to?

Jsr, i like the new desine,but i think that the dart itself will not fly right if you dont have deterline fourths so that the wings dont get caught.

dewey-1 wrote:[Was the barrel used making use of a choke or a slug barrel? Just a thought.

Smoothbore unchoked, that would have been a basic mistake

How are the fins attached? I am thinking the fin assembly seperated rather than breaking the fins.

Nope, shattered. He said in the slow mo the fins and shredded wad came out before the bolt.

Which ones were the bolts he referred to?

This is what he had to test, apparently only 3, 4 and 5 were successful, the rest shattered in the barrel.

Jsr, i like the new desine,but i think that the dart itself will not fly right if you dont have deterline fourths so that the wings dont get caught.

The balle sauvestre uses two sabot "petals" and seems to work well enough.

I'm confident these will work so I made four more:

Latest package for taofledermaus, aside from the saboted rounds I also made some PVC supports to stop the previously made projectiles with fullbore fins from twisting in the barrel in the hope that they will survive firing, as in the diagram.

Finally figured out what they remind me of!


Don't think those toy bombs would fly as well though