Slingshots Forum banner
1 - 8 of 8 Posts

·
Registered
Joined
·
2,100 Posts
Discussion Starter · #1 ·
A friend of mine asked me if I ever experienced failures. Yes, sir, failures galore! For every successful design, I have one that doesn't work.

He said that just showing off the successes is wrong, and asked me to present at least the more spectacular failures as well. OK, here are two of those.

The first one is an attempt to make a slingcat with draw length extension. The idea: A spring loaded mechanism would automatically raise a roller when you draw out, and then when you release it would snap back in, making room for the ball.

Problem is that it did not work. What happened is that the ball hits the roller. Obviously the roller did not get down fast enough. A dangerous slingshot. For the trash.







This next one was my attempt to make a target slingshot. I wanted adjustable fork width and height, self centering grip, a spirit level to avoid canting and adjustable sights.

In general it works, but it is way to heavy. I can make about ten shots, and then my arm begins to ache and to tremble. Plus, the adjustable fork height and width is unnecessary really. The only thing that is worth preserving is the sight+spirit level.







Regards, Jörg
 

·
Premium Member
Joined
·
1,714 Posts
It seems from those images, that the ones you've put more effort into, are the ones that are not performing (failing).
 

·
Registered
Joined
·
2,100 Posts
Discussion Starter · #4 ·
Well, this is the third roller. It is like every second shot is a roller hit.

True, the more complex slingshots are, the more likely something ain't working as planned.

Regards

Jörg
 

·
Premium Member
Joined
·
1,714 Posts
So true Aaron, and I didn't mean it in a negative manner, just in case it was taken that way
. I was thinking of how it may relate to the simplicity of a slingshot. Even the Joerg's creations are complex, compared to the design of a conventional slingshot, some of his designs are simple engineering, that look complex. I like the laser one the best. But you're right about failure and success. I experience failure every day with my own business, at the same time while it's slowly getting better. Embrace failure!
 

·
Premium Member
Joined
·
3,465 Posts
Jörg, my idea also has a lever pivoting from the bottom, but all the motive force comes through the lever. There is a powerful band within the handle trying to pull the lever out, and the lever pulls on two lines of cord going up to two eyes on the ends of a fork. The advantage is leverage delivered in essentially a trigonometric TAN function, i.e. having considerable let off at full draw and full torque and max velocity as the pouch reaches the fork. You may want to try this; you have better skills than I in the fabrication of moving parts.
 

·
Premium Member
Joined
·
3,465 Posts
I just realised how truly epic the sighted fork is. Kudos for the effort!
 
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top