Homebuilt Auto-Reset Plinking Target PIC Heavy

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NS_Kan8dn

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This is my attempt at a resettable 22 plinking target. It is kind of a hybrid of others I have seen. It has two resettable sets of four 3" targets as well as a spot for 4 paper targets. The whole setup weighs 52lbs.

Here is several parts lying on the floor while I am doing a mock up of what it may look like.

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The frame has been fabricated and welded

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Metal targets have been cut and I am deciding on a layout within the frame

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Disposable plywood target backing is located and rod to support metal targets is in place temporarily

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Targets have had supports installed and hung on rod as well as the two reset targets have been installed

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Side view of reset mechanism

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You shoot the lower targets and they swing around and rest on the T bar of the rest target.

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You then shoot the top target and the T bar moves forward and drops the four lower targets back in place

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Right now it is just tack welded and awaiting some spacers to help permanently locate the targets on the rods. I have hit each target with a hammer and the mechanism functions as designed. Hopefully I have not made them to small at three inches square or its back to the drawing board.
 
Does a .22 bullet have enough energy to swing those targets all the way to the rest position?
The lever ratio on the support mechanism looks like it would require much more energy than is available from a .22 bullet to release the targets?
Otherwise, that's a good design and looks like it'll be fun to shoot.
 
TAC PRO said:
Does a .22 bullet have enough energy to swing those targets all the way to the rest position?
The lever ratio on the support mechanism looks like it would require much more energy than is available from a .22 bullet to release the targets?
Otherwise, that's a good design and looks like it'll be fun to shoot.
Click to expand...

I wish I knew the answer. I will have to take it out and test it. If there is not enough energy I will add mass to the top of the swing arms of each lower target. If they swing to hard then I will add mass to the bottom of the target. I hope it works just right. I may have to "double tap" the top to get them to reset. It takes a little more effort with the hammer.
 
NS_Kan8dn said:
I wish I knew the answer. I will have to take it out and test it. If there is not enough energy I will add mass to the top of the swing arms of each lower target. If they swing to hard then I will add mass to the bottom of the target. I hope it works just right. I may have to "double tap" the top to get them to reset. It takes a little more effort with the hammer.
Click to expand...

I have the auto reset target that Canadian Tire sells. I sometimes have to double tap the large target to get the smaller ones to reset, so I would imagine you would have to with this bad boy as well as it's clearly a heavier unit. Looks like you will have hours of fun though, I doubt you will have a problem selling them if you ever take that route. Keep up the good work!
 
If I may make a suggestion: Place the fulcrum just above the centre of balance as shown in the drawing below. The targets should also have the fulcrum just above the centre of balance and the weight for any moving parts should be reduced as much as possible.
This will result in parts that require the minimum amount of energy to move.
DISCLAIMER: The drawing does not take into consideration the actual weight of the parts. The centre of balance should be determined physically.
target.JPG
 
That looks like it's gonna be alot of fun. I have a couple stands I made that the the target pieces spin when they are hit. Been trying to come up with a plan for a resettable one. Nice Job! Let us know how well it works for you. :)
 
TAC PRO said:
If I may make a suggestion: Place the fulcrum just above the centre of balance as shown in the drawing below. The targets should also have the fulcrum just above the centre of balance and the weight for any moving parts should be reduced as much as possible.
This will result in parts that require the minimum amount of energy to move.
DISCLAIMER: The drawing does not take into consideration the actual weight of the parts. The centre of balance should be determined physically.
target.JPG
Click to expand...

Thanks for the input. All is appreciated.

I intentionally over weighted the balance towards the bottom end so the impact did not jar the T bar so much as to reset the targets prematurely. The T bar is also located so as to make the targets sit with a negative incline so they do not bounce around and slip off the bar. I also was thinking that perhaps a double tap on the reset would add to the challenge if it was required.

A field test will tell the tale and I could easily rebalance the bar by drilling more holes and relocating the various pivot points.

What CAD program is that?
 
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NICE! ... looks a lot better than the little one that cabelas sells ... talk about a waste of money but my daughter likes it.

I may have to drive to NS to pick one up from you .. shipping 52lbs to my neck of the woods would kill me ... lol ;)
 
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