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As per AKC regulations, the double oxer jump consists of two parallel bars at the defined
jump heights of the single bar. The tops of the horizontal bars must be within a quarter
inch of the defined jump heights of 8, 12, 16, 20, and 24" and the new 4" height.
The two parallel bars can be anywhere from 48" to 60" long.
The two vertical posts that support the bars are 36" high. To set the heights for
the second bar, an additional post is mounted at a 63° angle from the horizontal.
Pick a point on the angled post. The distance from that point to the vertical post is
one half of the height of that point on the vertical post. This is the AKC's way of
stating that the distance between the centers of the bars is one half of the jump height.
On the posts for the bar jumps, I do not use a fixed mount point at each defined
jump height. Instead,
I have a PVC T that is modified so that it snaps onto the post. The heights are color coded
with tape and the low end of the modified T aligns with the top of the tape to give a defined
height. However, with a bar support that snaps onto the post, the user is permitted a much greater
variety of jump heights. If you do not want a 12" height but want a 10" height
instead - you got it!
By having the bar supports snap onto the post, the post can be made of one solid piece of PVC pipe which makes for a more stable jump.
My double oxer is constructed with a
bar mounted at a 63° angle onto a piece of 1/2" plywood. The post is secured
to the plywood with three (3) screws. The plywood is then mounted to the main jump base with several screws. The four (4) stabilizers are 10"
long and the angled post is 30" long.
To modify the regular T to create the snap T, cut half of the head off. Since the
double oxer uses four (4) bars, eight (8) snap Ts are necessary.
This picture shows the junction of the Ts for the jump. This construction is common
to all of the jumps. 1.5" PVC pieces are used to connect these Ts. The T just
below the red tape was modified. A bar placed in this T is 4" above the ground.
You can see the horizontal bar that stabilizes the jump when the higher heights
are used.
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