Figure 4 dead drop version 2.0

G

grateful_fred

Joined
Jul 15, 2008
Messages
50
Hey guys,

Here are the pics from the latest attempt to refine the figure 4 dead drop.
I reused the logs and some of the other pieces. ( with the help of some of the comments here ) I realize now what the important factors are in building a good figure 4. There should be little offset between the point that supports the top log and the point vertical stick of the 4. Meaning the diag piece should not extend far over the vertical point. Notches... notches, notches must be cut the proper way. Did I mention the notches? The angle between the vertical and the diag pieces should on the smaller side of 45 degress.

This one triggered really nice.
In version 1.0 I mentioned that the vertical piece was hammered in to the ground. When the trap triggered the diag piece would "pivot" on the vertical piece as the top log push on it. Eventhough it still worked nicely the pivoting took energy away from the falling top log. In version 2.0 the vertical and the diag pieces are simply pushed away.
Now with this particular set up I found the best place for the base of the vertical is on top of the bottom log. Some of you mention it should be put behind the log or in front of the log. I could have made a bigger 4 but still it seems like when I put it in front or rear the top log is pushed into the guides from the sideways pressure. Comment and ideas welcome.

Broke out the F1 for this trip. And the gransfors of course!!
Of couse this trap is not dressed or placed in a location where it will actually produce.

DSCF0715.jpg


DSCF0716.jpg


DSCF0714.jpg


DSCF0713.jpg
 
one thing you might want to consider is reconfiguring it so your upright is not under the dead fall. it doesn't happen all the time, but sometimes the deadfall will land on the upright and prevent a kill.

all in all, nice work

Alan
 
Well done! Also consider shaving away the remainder of the upright under the crosspost of the "4" so it slips off without catching.
 
grateful_fred said:
I see what you are saying. have that right angle cut extend more down in case the animal push down in some way.
Click to expand...

Actually have that right angle cut extend only just below the crosspost, then shave the right angle off to the base so it won't keep hold on the upright. Does that make sense? So, as soon as it slips a little, it will collapse immediately.
 
Brian Jones said:
Actually have that right angle cut extend only just below the crosspost, then shave the right angle off to the base so it won't keep hold on the upright. Does that make sense? So, as soon as it slips a little, it will collapse immediately.
Click to expand...

Good tip, I do the same thing thanks to Ron Hood!

I must be the only member without an F1 and without a Htchet. I am a black sheep.

-RB
 
Brian Jones said:
Actually have that right angle cut extend only just below the crosspost, then shave the right angle off to the base so it won't keep hold on the upright. Does that make sense? So, as soon as it slips a little, it will collapse immediately.
Click to expand...

Understand now.
 
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